Answer:
10^5
Step-by-step explanation:
10 is multiplied by itself 5 times so you use 5 as the exponent
10 is the number you're multiplying so it the bottom number
10^5
find rates in context
To find out the rate of change, divided 110,400 miles by 24 hours
so
110,400/24=4,600 miles per hour
Which shows the best estimate for 8.3 ÷ 1.01? A. 7 B. 8 C. 9 D. 9.5
Answer:
the answer is probably B. 8
Step-by-step explanation:
because when the exact answer is put out you need an estimate
8.2178 exactly with the added symbol
so the estimate would have to be B. 8
Answer:b.8
Step-by-step explanation:
(12-√-8)/2
solve as a complex number?
The solution to the expression (12-√-8)/2 as a complex number is 6 - i√2.
What is expression?
In mathematics, an expression is a combination of numbers, variables, and mathematical operations, such as addition, subtraction, multiplication, division, exponents, and roots.
The expression (12-√-8)/2 involves a square root of a negative number, which cannot be represented by a real number. Therefore, we need to extend the real numbers to the complex numbers to solve this expression.
To evaluate the square root of a negative number, we can use the imaginary unit, denoted by i, which is defined as the square root of -1. Then, we have:
√-8 = √(8) √(-1) = 2i√2
Substituting this value back into the original expression, we get:
(12-√-8)/2 = (12 - 2i√2)/2
Simplifying the expression by dividing both the numerator and denominator by 2, we get:
(12 - 2i√2)/2 = 6 - i√2
Therefore, the solution to the expression (12-√-8)/2 as a complex number is 6 - i√2.
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What is the probability that a student‘s favorite hobby is roller skating ?Theoretical =Experimental =
The theoretical probability is given by 1 over the number of hobbies.
If there is a total of 8 hobbies, the probability of a student having a specific hobby is:
[tex]P=\frac{1}{8}[/tex]The experimental probability is given by the number of students with that hobby over the total number of students. If 3 students have the hobby roller skating among the 24 students surveyed, the probability is:
[tex]P=\frac{3}{24}=\frac{1}{8}[/tex]9.3 divided by 3.8 HELP MEEEEEEEEEEEEEEEEEE
Answer: 2.44736
Step-by-step explanation:
Find the midpoint of the segment with endpoints of (-1, 7) and (3, -3) andenter its coordinates as an ordered pair. If necessary, express coordinates asfractions, using the slash mark (7) for the fraction bar.
The two endpoints we have are (-1,7) and (3,-3).
And we need to find the midpoint.
Step 1. Label the given coorfinates as (x1,y1) and (x2,y2):
[tex]\begin{gathered} x_1=-1 \\ y_1=7 \\ x_2=3 \\ y_2=-3 \end{gathered}[/tex]Step 2. Use the midpoint formula:
[tex](\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})[/tex]Substituting the values for x1, x2, y1, and y2 that we found in step 1:
[tex](\frac{-1+3}{2},\frac{7-3}{2})[/tex]Step 3. Solve the resulting operations to find the coordinates of the midpoint:
[tex](\frac{2}{2},\frac{4}{2})[/tex]Solving the divisions:
[tex](1,2)[/tex]The midpoint is (1,2).
Answer: (1,2)
a farmer keeps cows,pigs and sheep on his farm. the ratio of cows to pigs to sheep on the farm is 2:7:16. work out the percentage of the animals that are sheep
Using percentages, we know that there are 64% of sheep in the total of all the animals, which is the ratio [Cows:pigs:sheep = 2:7:16].
What are percentages?A % is a quantity or ratio that, in mathematics, represents a portion of one hundred. It's frequently represented by the sign "%" or just "percent" or "pct." For instance, the decimal 0.35, or the fraction, represents 35%. By dividing the value by the entire value and multiplying the result by 100, one may determine the percentage. The percentage calculation formula is (value/total value)100%.So, the percentage of sheep in the given ratio:
Cows:pigs:sheep = 2:7:16So, the total number of animals:
2+7+16 = 25Now, calculate 16 as what percentage of 25 as follows:
25/100 × x = 1625x = 1600x = 1600/25x = 64%
Therefore, using percentages, we know that there are 64% of sheep in the total of all the animals, which is the ratio [Cows:pigs:sheep = 2:7:16].
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Nicolas drinks 2/3 liters of water in the morning and three 1/2 liters of water at lunch . during basketball practice, he drinks another 2/5 liter of water. what is the total amount of water in liters, that Nicolas drinks.
The total amount of water Nicholas drank is 47/ 30 liters of water.
Given : Amount of water Nicholas drinks in the morning = 2/3 liters
Amount of water he drinks at lunch = 1/2 liters
Amount of water he drinks during his basketball practice = 2/5 liters
Thus to calculate the total amount of water he drank in the whole we would you the operation of addition in which we will add all the above mentioned value.
The value which comes after adding all of the above mentioned numbers is called sum .
Thus the total amount of water Nicholas drank = 2/3 + 1/2 + 2/5
On taking the LCM we will get
= [tex]\frac{20 + 15 + 12}{30}[/tex]
= 47 / 30
Thus the total amount of water Nicholas drank is 47/ 30 liters of water.
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Or watch a video leroy is a citizen scientist for a monarch butterfly project. every week, he visits a local patch of milkweed and counts the number of monarch larvae on the plants. last week, leroy didn't count many larvae. this week, he counts 29 larvae on the milkweed. for both weeks, leroy's total count is 41 larvae.
Leroy's count for last week is 21 larvae.
Define subtractionThe process of determining the difference between two integers is called subtraction, which is a fundamental arithmetic operation and is represented by the symbol (-). To determine the difference between two numbers, perform the subtraction process. When you remove a few items from a group of things, the group gets smaller.
Given, total count for both week is 41 larvae
Count for this week is 29 larvae.
Now, find the count for last week,
count = 41 - 29
= 12
Therefore, Leroy's count for last week is 12 larvae.
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The complete question is:
Leroy is a citizen scientist for a monarch butterfly project. Every week, he visits a local patch of milkweed and counts the number of monarch larvae on the plants. Last week, Leroy didn't count many larvae. This week, he counts 29 larvae on the milkweed. For both weeks, Leroy's total count is 41 larvae. Find Leroy's count for last week.
what is the zero of f(x)=-2x+6
Answer:
Step-by-step explanation:
the answer is x=25
Proportions: Aubrey's car used 2 gallons to travel 90 miles. How far can she travel on 11 gallons?
Answer:
495 gallons
Step-by-step explanation:
2= 90
11=?
90×11÷2
= 495 gallons
What is the x-coordinate of the point in the stan- dard (x, y) coordinate plane at which the two lines y = - 2x + 7 and y = 3x - 3 intersect? A. 10B. 5 C. 3D. 2 E. 1
we can equalize the equations and solve x
[tex]-2x+7=3x-3[/tex][tex]\begin{gathered} 7+3=3x+2x \\ 10=5x \\ x=2 \end{gathered}[/tex]the option is D
Is 4/21 and 16/84 proportional
Answer:
True. They are both 4/21 and 4/21.
Step-by-step explanation:
You know they are proportional if they can be reduced any smaller. 4/21 cannot be reduced, but 16/84 can. 16 divided by 4 = 4. 84 divided by 4 = 21.
So, we are left with the answers 4/21 and 4/21. So, this answer is True.
May I have Brainliest please? I am so close to getting my next ranking! I just need 3 more for it! I would really appreciate it, and it would make my day! Thank you so much, and have a wonderful rest of your day!
what does 7m- m equal
7m-m is equal to 6m.
HELP IT'S DUE NOW! :(
The system of equations that can be used to find the number of black and white copies and color copies is b + c = 68 , 0.08b + 0.15c = 6.00 .
In the question ,
it is given that
the total amount paid by the customer at the print shop = $6.00
total number of copies that the customer made = 68
the cost for printing 1 black and white copy = $0.08
the cost of printing 1 color copy = $0.15
let the number of black and white copies be "b"
let the number of color copies be "c" .
So ,
b + c = 68
and
the cost of b black and white copies is = 0.08b
the cost of c color copies is = 0.15c
the total cost = cost of b black and white copies + cost of c color copies
6.00 = 0.08b + 0.15c
0.08b + 0.15c = 6.00
Therefore , The system of equations that can be used to find the number of black and white copies and color copies is b + c = 68 , 0.08b + 0.15c = 6.00 , the correct option is (d) .
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i really need help with this math question
(7, -3) are the coordinates of R' after dilation with center (0, 0) and with the scale factor of 2.
What is meant by graph and coordinates?A graph's basic relationship is represented by a point.
A pair of numbers containing two coordinates define each point.
A coordinate is one of a set of numbers used to locate a point on a graph.
Each point is assigned an x and a y coordinate.
Each point is identified by an ordered pair of numbers: an x-coordinate on the x-axis and a y-coordinate on the y-axis.
Parentheses indicate ordered pairs (x-coordinate, y-coordinate).
The starting point is at (0,0).
The horizontal and vertical distances from the two reference axes are used to describe the position of a point on a coordinate plane.
So, after dilation with center (0, 0) and with the scale factor of 2, the coordinates will be:
R' are (7, -3)
P' are (4,-3)
Q' is (4,4)
Hence, the coordinates of R are (7, -3).
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how do you ?????????????????????????
what???
any question?????
complete the identitysin 2x - cot x
Let's complete the identity:
[tex]\begin{gathered} \sin 2x-\cot x=2\sin x\cos x-\frac{\cos x}{\sin x} \\ =\frac{2\sin^2x\cos x-\cos x}{\sin x} \\ =\frac{\cos x(2\sin^2x-1)}{\sin x} \\ =\frac{\cos x}{\sin x}(2\sin ^2x-1) \\ =\frac{\cos x}{\sin x}(2(1-\cos ^2x)-1) \\ =\frac{\cos x}{\sin x}(2-2\cos ^2x-1) \\ =\frac{\cos x}{\sin x}(1-2\cos ^2x) \\ =\frac{\cos x}{\sin x}(-\cos 2x) \\ =-\cot x\cos 2x \end{gathered}[/tex]Dave is trying on pants. Each pair is too small, fits well, or is too big. Dave estimates that 10%, percent of the pants he tries on will be too small and that 20% of the pants will be too big. If he were to try on 20 pairs of pants, which is the best prediction for the number of pairs of pants that would fit well?
The best prediction for the number of pair of pants that would fit well is 14.
What is the best prediction?Percentage is when value is converted to a number out of 100. Percentage is a measure of frequency. The sign that is used to represent percentages is %.
The first step is to determine the percentage of pair of pants that would fit well.
Percentage of the pair of pants that would fit well = 100% - percentage that are too big - percentage that are too small
Percentage of the pair of pants that would fit well = 100% - 10% - 20% = 70%
Number of pair of pants that would fit well = total pants that Dave tried x percentage that fits well
Number of pair of pants that would fit well = 20 x 70%
Number of pair of pants that would fit well = 20 x 0.7 = 14
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help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
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]
Assume the base unit of water is 555 gallons and the cost per unit is $1.74. How much money will be saved in a month by a family who conserves 8000 gallons of water per month?
1) Gathering the data
555 gallons ----- $ 1.74
2) If 8000 gallons could be spent
If a Family conserves 8000 gallons this family would not have an expense of?
Let's set a proportion for that:
555 g-----$1.74
8000g ---x
555x =13920 Dividing both sides by 555
x=25.08
If a family conserves 8000 gallons of water. They save $25.08 per month assuming that $1.74 is equal to 555 gallons of water.
If the speed of pulley A is 600 r.p.m., find the speed of the other pulleys.
Speed of pulleys B and C: ___r.p.m.
Speed of pulley D: ___ r.p.m
The corresponding speed of pulleys B, C and D are 300rpm, 1200rpm and 240 rpm
How to find the rpm speed of the pulleys?
The speed of the pulleys can be determined by using the formula that relates the speed and diameters of the pulleys
N1/N2 = D2/D1
Where: D1 is the diameter of the driven pulley, D2 is the diameter of the drive pulley, N1 is the speed of the driven pulley and N2 is the speed of the drive pulley
Given: Da = 2'', Db =4'' Dc = 1'', Dd =5'' and Na = 600rpm
Na/Nb = Db/Da
600/Nb = 4/2
2Nb = 600
Nb = 600/2 = 300 rpm
Nb/Nc = Dc/Db
300/Nc = 1/4
Nc = 300 x 4 = 1200rpm
Nc/Nd = Dd/Dc
1200/Nd = 5/1
5Nd = 1200
Nd = 1200/5 = 240 rpm
Therefore, the speed of pulleys B, C and D are 300rpm, 1200rpm and 240 rpm respectively
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1. The volume of a 3-D shape is 27 cubic inches. The shape is scaled up by a factor of 3. What is the
volume of the new shape?
Answer:
81
Step-by-step explanation:
27 * 3 = 81
8. Erin bought 4 jars of jelly and 6 jars of peanut butter for $19.32. Adam bought 3 jars of jelly and 5 jars
of peanut butter for $15.67.
Find the cost of a jar of peanut butter using substitution.
The cost of a jar of peanut butter is $2.36.
Let cost of one jar of jelly be x and the cost of jar of peanut butter be y.
According to question, total cost of 4 jars of jelly and 6 jars of peanut butter is $19.32.
So, 4x+6y = 19.32 ..............(i)
According to question again, the cost of 3 jars of jelly and 5 jars of peanut butter is $15.67.
So, 3x+5y = 15.67 ...........(ii)
4*(ii) - 3*(i) we get,
12x+20y - (12x+18y) = 62.68 - 57.96
2y = 4.72
y = 4.72/2 = 2.36
Substituting the value of y in (i) we get,
4x+6*2.36 = 19.32
4x+14.16 = 19.32
4x = 19.32-14.16
4x = 5.16
x = 5.16/4
x = 1.29
Hence the cost of jar of peanut butter is $2.36.
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Fiona is solving the problem. If she made a mistake in which step(s) did she make it?Solve: 25^x = ✓125Step 1: 25^x = 125^-2Step 2: 5^2x = 5^-6Step 3: 2x = -6Step 4: x = -3A) Step 1B) Step 2C) Step 3D) There is no mistake
Fiona made a mistake in Step 1 because:
[tex]\sqrt[]{125}=125^{\frac{1}{2}}\text{ not }125^{-2}[/tex]evaluate the polynomial -x^4-3+4x^2+2 when x=-1
the given expression is,
[tex]=-x^4-3+4x^2+2[/tex]put x = -1 in the above expression
[tex]\begin{gathered} =-(-1)^4-3+4(-1)^2+2 \\ =-1-3+4+2 \\ =2 \end{gathered}[/tex]so the answer is 2
What does the y-intercept on this graph represent? a.At 0 days, there are 400 pages remaining b. At 0 days, there are 16 pages remaining c. At 16 days, there are no pages remaining d. At 16 days, there are 400 pages remaining,
Explanation:
The y-intercept is the point where the line crosses the y-axis. This always happens when x = 0.
In this case x = 0 represents 0 days. The y-intercept is 400 pages remaining
Answer:
The answer is option a. At 0 days there are 400 pages remaining
what digit is in the
we have the expression
[tex]\frac{2}{9}\cdot\frac{1}{3}[/tex]Multiply the fractions
(multiply the numerators and the denominators)
so
[tex]\frac{2}{9}\cdot\frac{1}{3}=\frac{2\cdot1}{9\cdot3}=\frac{2}{27}[/tex]find an equation of a line with a slope of 6 and having the point (3,5) on the line
Given:
The point (3,5)
The slope is 6.
To find the equation of the line:
Using the point-slope formula,
[tex]y-y_1=m(x-x_1)[/tex]Substituting the point and slope, we get
[tex]\begin{gathered} y-5=6(x-3) \\ y-5=6x-18 \\ y=6x-18+5 \\ y=6x-13 \\ y-6x+13=0 \end{gathered}[/tex]Hence, the equation of the line is,
[tex]y-6x+13=0[/tex]1 divided by 4/9 lowest term
The number obtained 9/4 is the reciprocal of the number 4/9.
What is defined as the reciprocal of a number?The multiplicative inverse of the a number is defined as the reciprocal. In other words, a number's reciprocal is described as 1 divided by such a number. The product of a specific number and its reciprocal always equals one.The reciprocal of the a fraction can be calculated by swapping the numerator as well as denominator values.For the given number.
Divide 1 by 4/9
This can be written as;
= 1/(4/9)
= 9/4
Then, the number obtained 9/4 is the reciprocal of the number 4/9.
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