We want to solve the following equation for x:
[tex]0.9x+5.1x+7=2(2.5x-3)[/tex]First, let's expand the parenthesis on the right side of the equation using the distributive property
[tex]\begin{gathered} 0.9x+5.1x+7=2(2.5x-3) \\ 0.9x+5.1x+7=2\cdot2.5x-2\cdot3 \\ 0.9x+5.1x+7=5x-6 \end{gathered}[/tex]To add the terms with x, we just need to add their coefficients.
[tex]\begin{gathered} 0.9x+5.1x+7=5x-6 \\ (0.9+5.1)x+7=5x-6 \\ 6x+7=5x-6 \end{gathered}[/tex]Subtracting 5x from both sides of the equation:
[tex]\begin{gathered} 6x+7-5x=5x-6-5x \\ (6-5)x+7=(5-5)x-6 \\ x+7=0\cdot x-6 \\ x+7=-6 \end{gathered}[/tex]Now, if we subtract 7 from both sides, we have
[tex]\begin{gathered} x+7-7=-6-7 \\ x=-13 \end{gathered}[/tex]Since this is a first degree polynomial, it has only one solution and this solution is x = - 13.
You are playing miniature golf on the hole shown.
a. Write a polynomial that represents the area of the golf hole. Show your steps and explain how you found the polynomial.
b. Write a polynomial that represents the perimeter of the golf hole. Show your steps and explain how you found the polynomial.
Bonus:
c. Find the perimeter of the golf hole when the area is 216 square feet.
The dimensions of the golf hole found using the indicated variable expressions are as follows;
a. The area of the golf hole is 4·x² + 12·x
b. The perimeter of the golf hole is 8·x + 8
c. The perimeter of the golf hole if the area of the hole is 216 square feet is 56 feet
What is the perimeter of a geometric figure?The perimeter of a geometric figure is found by the length of the boundary of the figure.
a. The area of the gulf hole is found as follows;
The area is a composite figure, which consists of a rectangle of length 3·x and width (x + 4) and a square of length x
Which indicates that the area is A = 3·x × (x + 4) + x×x = 3·x² + 12·x + x²
The area of the hole, A = 3·x² + 12·x + x² = 4·x² + 12·x
The area of the hole is A = 4·x² + 12·x
b. The perimeter of the hole is found as follows;
P = (x + 4) + 3·x + (x + 4) + x + x + x = 8·x + 8
The perimeter of the hole = 8·x + 8
c. The area of the golf hole = 216 square feet, which indicates;
4·x² + 12·x = 216
4·x² + 12·x - 216 = 0
x² + 3·x - 54 = 0
(x + 9)·(x - 6) = 0
x = 6 or x = -9
The perimeter of the golf hole is therefore;
P = 8 × 6 + 8 = 56
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help meeeeeeeeeeeeeee pleaseeeeeee
Answer: 10.8 seconds
Step-by-step explanation:
[tex]-16t^2 + 170t+40=10\\\\16t^2 -170t-30=0\\\\t=\frac{-(-170) \pm \sqrt{(-170)^2 -4(16)(-30)}}{2(16)}\\\\t \approx 10.8 \text{ } (t > 0)[/tex]
-2x² + 3y² + 4x - 5y-11=O
x+3y-1=0
what are the solutions of the equation 6x^2+x-2= 0
Answer: The answer would be
B. 1/2
C. 1/3
Step-by-step explanation:
The solution of the equation 6x² - x - 1 = 0 are x = 1/2 and x = -1/3 after using the quadratic formula.
how do i solve this for standard equation and foci?
For this problem, we are given the graph of an ellipse, and we need to determine its expression in the standard form.
The standard equation of an ellipse is given below:
[tex]\frac{(x-h)^2}{a^2}+\frac{(y-k)^2}{b^2}=1[/tex]Where (h,k) is the center of the ellipse, a is the horizontal radius and b is the vertical radius.
The center of the ellipse on our problem is (-2,2), the vertical radius is 2 and the horizontal radius is 3. We have:
[tex]\begin{gathered} \frac{(x+2)^2}{3^2}+\frac{(y-2)^2}{2^2}=1 \\ \frac{(x+2)^2}{9}+\frac{(y-2)^2}{4}=1 \end{gathered}[/tex]In order to calculate the Foci, we need to first find the eccentricity of the ellipse, which is given by the following formula:
[tex]\begin{gathered} e=\sqrt{a^2-b^2} \\ e=\sqrt{3^2-2^2} \\ e=\sqrt{9-4}=\sqrt{5} \end{gathered}[/tex]The coordinates of the foci are given by:
[tex]\begin{gathered} F(h+e,k)=(-2-\sqrt{5},2) \\ F^{\prime}(h-e,k)=(-2+\sqrt{5},2) \end{gathered}[/tex]The coordinates for the foci are: (-2-sqrt(5), 2) and (-2+sqrt(5), 2).
Which of the expressions equal −5
Answer:
-5+0=-5
(-6)+1=-5
-7+2=-5
Step-by-step explanation:
Describe a transformation that maps triangle abc onto triangle ade.Explain why this transformation makes triangle ade similar to triangle abc
Given:
Triangle ABC is mapped onto triangle ADE.
Required:
The transformation that maps triangle ADE similar to triangle ABC.
Explanation:
A dilation process from A by a factor 3 maps triangle ABC onto triangle ADE.
In the dilation process, the transformed angle value remains constant.
[tex]\angle A\text{ is reflecxive}[/tex]Also,
[tex]\angle ABC\text{ }\cong\text{ ADE}[/tex]Therefore above transformation makes triangle ABC similar to triangle ADE.
Answer:
Thus from the explanation given above, the above transformation makes triangle ABC similar to triangle ADE.
Complete the point-slope equation of the line through (−2,6) (1, 1)
Use exact numbers.
y−6= [ ]
y-6 = -5/3 (x+2) is the point - slope equation of the line through (-2 , 6 ) ( 1 , 1 ) using exact numbers.
What is point - slope equation ?For linear equations, the typical form is y-y1=m(x-x1). It highlights the line's slope and a line point (that is not the y-intercept).
The two approaches for determining the equation of a line given a point and its slope are as follows:
(a). Input the slope and the (x, y) point values into the equation y = mx + b, then solve for b using the substitution technique
b) Point-slope form: (x 1, y 1), where (y 1, x 1) is the point and (m, the slope) is the specified slope.
CalculationFirst you need to find the slope, (y2-y1)/(x2-x1). This is (1-6)/(1-(-2)) or -5/3
Now that you know the slope you can use that for the point-slope equation
The point-slope equation is y-y1 = m(x-x1). If we start with y-6, the x value is -2 (from our point (-2,6)
y-6 = -5/3 (x-(-2))
or, y-6 = -5/3 (x+2)
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3 (2) ^2 divide [3 x 2] - 5__________________ 8 divide 4 x 2
Solution
Using BODMAS to solve the fraction
[tex]\begin{gathered} \frac{3(2)^2\div[3\times2]-5}{8\div4\times2} \\ \frac{3(4)\div6-5}{2\times2} \end{gathered}[/tex][tex]\begin{gathered} \frac{12\div6-5}{4} \\ \frac{2-5}{4} \\ =-\frac{3}{4} \end{gathered}[/tex]Therefore the answer = -3/4
is the morning temperature was 1 degrees Celsius then there was a rise of 3 degrees Celsius what is the afternoon temperature
the temperature in the morning was 1 degree celsius
then rise of 3 degree
so now the total temperature is 1 + 3 = 4 degree
so the temperature of the afternoon is 4 degrees.
2x+4y=6
3x-12-бу
Solve X and Y
Answer:x=12
y=−186
Step-by-step explanation:x=63x+4y=12
Consider the first equation. Subtract 63x from both sides.
x−63x=4y
Combine x and −63x to get −62x.
−62x=4y
Divide both sides by −62.
x=−
62
1
×4y
Multiply −
62
1
times 4y.
x=−
31
2
y
Substitute −
31
2y
for x in the other equation, 63x+4y=12.
63(−
31
2
)y+4y=12
Multiply 63 times −
31
2y
.
−
31
126
y+4y=12
Add −
31
126y
to 4y.
−
31
2
y=12
Divide both sides of the equation by −
31
2
, which is the same as multiplying both sides by the reciprocal of the fraction.
y=−186
Substitute −186 for y in x=−
31
2
y. Because the resulting equation contains only one variable, you can solve for x directly.
x=−
31
2
(−186)
Multiply −
31
2
times −186.
x=12
The system is now solved.
x=12,y=−186
Find the slope and the y-intercept of the line.
3x+y=2
Write your answers in simplest form.
Answer:
slope is -3
y intercept is 2
Step-by-step explanation:
3x+y=2 [subtract 3x from both sides]
y=-3x+2
slope is -3
y intercept is 2
At cliffs of insanity point, the great sasquatch canyon is 7117 feet deep. from that point, a fire is seen at a location known to be 10 miles away from the base of the sheer canyon wall. what angle of depression is made by the line of sight from the canyon edge to the fire? express your answer using degree measure rounded to one decimal place.
Angle of depression is 7.7 ° made by the line of sight from the canyon edge to the fire .
What is angle of depression ?The angle of depression is the angle created by the object and the horizontal line as seen from the horizontal line. The distance between two objects is often calculated when the angles and spacing of an object from the ground are known.
Calculationlet f be the the fire
b is the base of the sheer canyon wall
o be the cliffs of insanity point that is canyon edge
so OB = 7117 Feet
bf = 10 miles = 10 * 5280 = 52800 feet
angle of depression is < xof which is equal to < ofb
let the angle of depression is [tex]\theta[/tex]
now from triangle obf ; it is a right angle triangle , where of = hypotenuse
bf = base , ob = height < ofb = [tex]\theta[/tex]
so , tan [tex]\theta[/tex] = ob/bf = 7117/52800
[tex]\theta[/tex] = [tex]tan^{-1}[/tex] ( 7117/52800) = 7.68 ° = 7.7 °
so angle of depression is 7.7 °
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What is the quotient of two and two fifths ÷ five sixths?
sixty over thirty
seventy two over twenty five
fifteen over twenty-five
twenty two fifths
B ] seventy two over twenty five is the quotient of two and two fifths ÷ five sixths.
Quotient refers to the number produced by division of two numbers.
According to question,
two and two fifths = 22/5 = 5*2+2/5 = 12/5five sixths = 5/6Division of two numbers,
⇒ 12/5 / 5/6
⇒ 12/5 * 6/5
⇒ 72/25
Hence, 72/25 i.e., seventy two over twenty five is the quotient of two and two fifths ÷ five sixths.
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PLEASE HELP!!!
1: Add the linear expression
(-2×-5-3×)+(2×-2) what is the sum?
2: Subtract the linear expressions.
(3/4×-1)-(1/3×+4) what's the difference?
3: Add the 2 expression
-6.5b+11 and 3.3b-2
4:Subtract the linear expressions.
(-3.6×+9.4)-(1.9×+3.6) whats the difference?
5: Subtract 5×-2 from -3×+4.
A. -8×+2
B.2×+2
C.8×-6
D.-8×-6
The solution of each expression is
(1) (-2×-5-3)+(2×-2) = - 10
(2) (3/4 x-1)-(1/3 x +4) = -13/12 x -5
(3) -6.5b+11 + 3.3 b - 2 = - 3.2b + 9
(4) (-3.6x+9.4)-(1.9x +3.6) = -5.5 x + 5.8
What are the basic equations?When two expressions are connected with the equals sign (=) in a mathematical formula, it expresses the equality of the two expressions. An equation is an algebraic statement that demonstrates two mathematical expressions are equivalent in algebra, and this is how it is most usually used. In the equation 3x + 5 = 14, for instance, the two expressions 3x + 5 and 14 are separated by the symbol "equal." When two expressions are joined by an equal sign, a mathematical statement is called an equation. An equation is something like 3x - 5 = 16. By solving for x, we discover that x equals 7, which is the value for the variable.
(1) The sum of the given expressions is given as
(-2×-5-3)+(2×-2)
= -2x - 8 + 2x - 2
= -8 - 2
= - 10
(2) (3/4 x-1)-(1/3 x +4)
(-3/4) x- (1/3) x - 1 - 4
= -13/12 x -5
(3) -6.5b+11 + 3.3 b - 2
= (-6.5+ 3.3) +11 -2
= - 3.2b + 9
(4) (-3.6x+9.4)-(1.9x +3.6)
= (-3.6x-1.9x)+9.4 - 3.6
= -5.5 x + 5.8
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Look at the graph of f(x). Which of the following are true? Select all that apply.
Answer:
Explanation:
Robert needs to cut four shelves from a board that is meters long. The second shelf is centimeters longer than twice the length of the first shelf. The third shelf is centimeters shorter than the first shelf. The remaining shelf is centimeters longer than the first shelf. If robert must use the entire meter board for the shelves, what is the length of the second shelf, in centimeters?.
The length of the second shelf is 114 centimetres.
Consider the four shelves as A, B, C and D. According to the question, the length of the four shelves is 2.5 cm.
A + B + C + D = 250 cm ( 1 m = 100 cm ⇒ 2.5 * 100 = 250 ) → 1
The length of the second shelf is 18 cm longer than twice the length of the first shelf.
B = 2A + 18 → i
The length of the third shelf is 12 cm shorter than the first shelf.
C = A - 12 → ii
The length of the fourth shelf is 4 cm longer than the first shelf.
D = A + 4 → iii
Substitute i,ii and iii in 1 ⇒ A + B + C + D = 250
A + 2A + 18 + A - 12 + A + 4 = 250
5A + 22 - 12 = 250
5A + 10 = 250
5A = 250 - 10
5A = 240
A = 240/5
A = 48
Substitute A = 48 in i, ii, iii and then we get,
B = 11, C = 36 and D = 52
Therefore, the length of the second shelf B is 114 cm.
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The complete question is
Robert needs to cut four shelves from a board that is 2.5 meters long. The second shelf is 18 centimetres longer than twice the length of the first shelf. The third shelf is 12 centimetres shorter than the first shelf. The remaining shelf is 4 centimetres longer than the first shelf. If Robert must use the entire 2.5 meter board for the shelves, what is the length of the second shelf, in centimetres?
Stevens new cell phone plan charges a flat monthly fee of $22.5. The plan allows an unlimited number of text messages, but each minute (m) used for the phone calls cost $0.12.
Write an equation that represents the monthly cost(c) of Steven's phone bill based on how many minutes talked?
The required system of equations to express Stevens monthly fee is
22.5 + 0.12 m = c
Given : A flat monthly fee which is charged for Stevens = $22.5
The cost of each phone call = $ 0.12
Let the cost of each monthly call be represented by the letter m
And the total monthly fee be represented by the letter c
thus according to the question the equation can be expressed as :
22.5 + 0.12 m = c
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the major parts of a salary range consist of all of the following, except: a. minimum b. midpoint c. median d. maximum
The major parts of a salary range typically include the minimum, midpoint, and maximum salary for a position. The median salary is often used as a point of reference within a salary range, but is not considered one of the major parts.
The median salary is the salary at which half of the workers in an occupation earn less and half earn more.The midpoint is the average of the minimum and maximum salaries. It is used to calculate the median salary. The median salary is the salary that is in the middle of the minimum and maximum salaries. It is used to calculate the mean salary. The mean salary is the average of all the salaries.
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Use the law of sines to solve the triangle if possible
The Sine rule formula is,
[tex]\frac{a}{sinA}=\frac{b}{sinB}=\frac{c}{sinC}[/tex]Given:
[tex]\begin{gathered} a=13.9in \\ A=83^0 \\ b=18.3in \\ B=? \end{gathered}[/tex]Let us solve for solve for the measure of angle B
[tex]\frac{13.9}{sin83^0}=\frac{18.3}{sinB}[/tex]Therefore,
[tex]\begin{gathered} sinB=\frac{18.3\times sin83^0}{13.9}=1.30673342266 \\ \therefore B=sin^{-1}(1.30673342266)=No\text{ solution} \end{gathered}[/tex]Hence, there are no possible solutions for this triangle (OPTION C).
I need help question
Answer: with what???
The ratio of adults to children is 400 to 150
SOLUTION
In mathematics, a ratio indicates how many times one number contains another.
And when we write quantities in ratio form, we represent ratio with the symbol :
For example: The ratio of A to B is written mathematically as A:B
Another important thing we must note when writing ratios is to always express both quantities in their simplest form.
With the above explanation, we can proceed in answering the question.
The ratio of adults to children which is 400 to 150, can be written mathematically in ratio form as:
[tex]\begin{gathered} =\frac{400}{150} \\ \text{Divide both the numerator and denominator by 10} \\ =\frac{40}{15} \\ \text{Divide both the numerator and denominator by 5} \\ =\frac{8}{3} \end{gathered}[/tex]Final answer: The ratio of adults to children is:
[tex]8\colon3[/tex]can you pls help wit
DEF is an acute angke because the measure we can notice is less than a right angle
then the value is less than 90°
then right option should be D and E
C isnt because we can notice the angle is
4. Write the following quadratics as products of two binomials. f(x) = 6x2 + 66x + 60
Answer:
f(x)=(6x+6)(x+10)
Explanation:
Given the quadratic expression:
[tex]f\mleft(x\mright)=6x^2+66x+60[/tex]First, we can rewrite it in the form below:
[tex]f\mleft(x\mright)=6x^2+60x+6x+60[/tex]Next, factor the terms:
[tex]\begin{gathered} f(x)=6x(x+10)+6(x+10) \\ \implies f(x)=(6x+6)(x+10) \end{gathered}[/tex]Thus, the quadratics as a product of two binomials is:
[tex]f(x)=(6x+6)(x+10)[/tex]if 1+3 =345+2=275+1=163+5=58then2+4=?what isnthe ?
Answer:
46
Explanation:
In each number to the right of the equality sign, the tenths place is always the rightmost number in addition and the one place is the result of the addition.
For example, in 1 +3 = 34
Therefore, for 2 + 4 we have
Hence,
[tex]2+4=46[/tex]which is our answer!
Find the mean, median, and mode of the data set. Round to the hundredths, if necessary. 3, 4, 5, 7, 6, 8, 8, 5, 3, 6, 4, 5, 3, 3, 7, 7.
Mean is 5.25, Median is 5 and mode is 3.
Given,
In the question:
There are numbers:
3, 4, 5, 7, 6, 8, 8, 5, 3, 6, 4, 5, 3, 3, 7, 7.
To find the mean, median and mode.
Let's Know :
How do you find the mean median and mode?
The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set. The median is the middle value when a data set is ordered from least to greatest. The mode is the number that occurs most often in a data set.
Now, According to the above statement :
To find Mean:
[tex]\frac{3+4+ 5+ 7+ 6+ 8+ 8+ 5+ 3+ 6+ 4+ 5+ 3+ 3+ 7+ 7}{16}[/tex]
= 84/16 = 5.25
For Median
Arrange in ascending order
3, 3, 3, 3, 4,4, 5,5,5, 6,6, 7, 7, 7, 8,8.
There is an even no. of observations. i.e., 16 numbers.
then, there is no single middle value; the median is then usually defined to be the mean of the two middle values: so the median of
Middle two values is : (5 + 5)/2 = 10/2 = 5
Middle value is 5
For Mode:
The mode is the number that occurs most often in a data set.
Mode is 3 .
Hence, Mean is 5.25, Median is 5 and mode is 3.
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16x - 4y = 3 y = 4x + 7
y in equation 1
[tex]\begin{gathered} 16x-4\mleft(4x+7\mright)=3 \\ 16x-16x-28=3 \\ -28=3 \end{gathered}[/tex]-28=3 is false, therefore the system of equations has no solution
x=9 and y=4 what does xy/2
Answer:
18
Step-by-step explanation:
Equation 9 x 4 / 2 = 18
First do 9 x 4 which is 36
Next do 36 / 2 which is 18
Also the "/" is another way to say to divide
find the greatest common factor of 615 and 570.
Given the numbers:
[tex]615\text{ and 570}[/tex]Let's find their greatest common factor:
Step 1: Let's determine the factors of the numbers.
a.) 570
The factors of 570 are: 1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 95, 114, 190, 285, 570
b.) 615
The factors of 615 are: 1, 3, 5, 15, 41, 123, 205, 615
Their common factors are: 1, 3, 5, 15
But the greatest among all factors is 15.
Therefore, their greatest common factor (GCF) is 15.
A longitudinal wave has 20 compressions and 20 rarefactions in 0.1s. Find its frequency.
The frequency of the longitudinal wave is 5/2 cm.
Given:
A longitudinal wave has 20 compressions and 20 rarefactions in 0.1s.
we are asked to determine the frequency of the wave = ?
1 wave ⇒ 1 compression + 1 rarefactions
therefore,
20 waves:
0.2 s ⇒ 20 waves.
1 & ⇒ 20/0.02 × 10/1
1 & ⇒ 200/2
1 & ⇒ 100 hz
20 > = 50 cm
⇒ 50/20
= 5/2 cm
Hence we get the frequency as 5/2 cm
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