Answer:
$4
Step-by-step explanation:
5c + 4p=28 equation 1
2c + 2p=12 equation 2
-2(2c +2p)=-2(12) multiply equation 2 by -2 so you can solve by elimination.
-4c-4p=-24 equation 2 multiplied by -2
5c+4p=28. Equation 1
c=4 added above 2 equations
solve for plates:
2c + 2p=12
2(4)+ 2p=12
8+2p=12
2p=4
p=2
check answer:
5c+4p=28. Equation 1
5(4)+4(2)=28
20+8=28
28=28
Please help !!!!!!
Clare is deriving the quadratic formula by solving ax^2+bx+c=0 by completing the square.
She arrived at this equation:
(2ax+b)^2=b^2-4ac
Briefly describe what she needs to do to finish solving for I and then show the steps.
Answer:
Clare starts with:
a*x^2 + b*x + c = 0
And she gets to:
(2*a*x + b)^2 = b^2 - 4*a*c
Now we want to show the final steps to solve the equation (isolating x)
First, we apply the square root to both sides:
[tex]\sqrt{(2*a*x + b)^2} = \sqrt{(b^2 - 4*a*c)}[/tex]
Because the square root has two solutions, (one negative and one positive), we will write:
[tex]2*a*x + b = \pm \sqrt{b^2 - 4*a*c}[/tex]
Now we subtract b in both sides:
[tex](2*a*x + b) - b = \pm \sqrt{b^2 -4*a*c} - b[/tex]
[tex]2*a*x = \pm \sqrt{b^2 -4*a*c} - b[/tex]
Now let's divide by 2*a in both sides:
[tex]2*a*x/(2*a) = \frac{\pm \sqrt{b^2 -4*a*c} - b}{2*a}[/tex]
[tex]x = \frac{\pm \sqrt{b^2 -4*a*c} - b}{2*a}[/tex]
I NEED HELP!!! ASAP!!
Answer:
1)
Perimeter=24 inches
Area= around 43.46 inches
Step-by-step explanation:
1) Perimeter = 3in * number of sides
Perimeter = 3*8 = 24
Area= 2(1+ square root of 2) length of one side squared
=42.46
2)
Perimeter = 24
Area= 43.46 inches squared- 3inches
3)
Perimeter = 24
Area= 43.46- triangle area
triangle area = height x base /2
Height = 3, we can compare it.
Base = 3
Triangle = 9/2
Area = 43.46- 4.5
Area =38.96
Can't see 4 and 5 for some reason
6)
Perimeter = 30
Area = 61.94
Sorry if its incorrect, I am just 4th grade :(
Determine the slope of the line.
Answer:
2/3
Step-by-step explanation:
Find the area of the shape below
Answer:
2 times 2 =4 4 times 4 =16 then you add I think
Describe fully the single transformation that takes shape P to Q
Answer:
Triangle P is scaled up 3 times to become triangle Q.
find 46% of 70. Do not round your answer.
Answer:
the answer is 32.2
Step-by-step explanation:
Not rounded
hope this helps
Answer:
32.2
Step-by-step explanation:
70 divided by 100 times 46
On the same exam, Alyssa's friend Jessie answered three times more questions correct than incorrect. Who got a higher percentage of the test questions correct, Alyssa or Jessie?
Complete question is;
Alyssa took a math test with 20 questions and she answered 16 questions correctly. In order get an A, she needs to answer at least 90 percent of the questions correctly.
A) Did Alyssa get an A on this math test? Explain.
B) How many questions would Alyssa need to answer correctly in order to get an A?
C) On the same exam, Alyssa's friend Jessie answered three times more questions correct than incorrect. Who got a higher percentage of the test questions correct, Alyssa or Jessie
Answer:
A) she didn't get an A because she scored less than 90%.
B) She will need to answer 18 correctly to get an A.
C) Alyssa had a higher percentage.
Step-by-step explanation:
A) Alyssa answered 16 out of 20 questions correctly.
Converting this to percentage gives;
16/20 × 100% = 80%
Now,we are told she needs at least 90% correct answers to get an A.
She scored 80% which is less than 90% mark of A, therefore she didn't get an A.
B) Let the number of minimum questions to answer correctly out of 20 be x.
Thus, since it is 90%.
Then;
x/20 × 100% = 90%
making x the subject;
x = 90 × 20/100
x = 18
She will need to answer 18 correctly to get an A.
C) her friend Jessie answered three times more questions correct than incorrect.
This means for every 4 questions answered, she had 3 correct and 1 incorrect.
Thus,
For 4 questions she had 3 correct answers, then for 20 questions, she will have: 20 × 3/4 = 15 correct questions
Which corresponds to;
15/20 × 100% = 75%
Thus, Alyssa had a higher percentage.
which of the following will not have congruent diagonals
What is the distance between the integers (-15) and (-9) on a number line?
Answer: 6 Im sure
Step-by-step explanation:
Hola, ¿cómo está tu día?
Answer:
Muy bien, y usted?
Answer:
es una pregunta o necesitas eso traducido al inglés ¿?
Can someone help me with this
Answer:
C
Step-by-step explanation:
1. Absolute values are in the shape of a V, so the answer is automatically C.
2. If you did not know that, you can see that the graph is a function because it passes the vertical line test. This rules out option A. By looking at the graph, you can see it passes the x-axis twice, meaning that it has 2 x-intercepts. This rules out option B. X-intercepts always have a y-coordinate of 0, so we can rule out option D. The only option left after this is C.
Find x so that w is parallel to v.
Step-by-step explanation:
the illustration is not with the question
Find the measurement of the exterior 1
Answer:
Sorry, but I can't see this well! I am on lapton, and it is impossible to tilt the whole thing over.
Answer: A: 145 degrees
Step-by-step explanation:
Calculate (1.6) · (0.215). Show your reasoning.
Answer:
0.344
Step-by-step explanation:
i cant show reasoning its just 1.6 times 0.215
thank you. please answer asap!
Answer:
96 i think
Step-by-step explanation:
I think its 96. just multiply all the sides
which of the following statements best describes the association
Answer:
C
Step-by-step explanation:
For one, it's negative so all positive answers can be eliminated.
Secondly, the y axis is hit on positive 3. No point even hits negative 3.
Knowing that, the only choice left is C.
The area of a circular plate is 625 pi square inches. If the radius of the circle is tripled, what is the area of the new circle?
A).1090 π in²
B).1270 π in²
C).6715 π in²
D).5625 π in²
Answer:
D.) 5625 pi inches squared
Step-by-step explanation:
square root of 625 = 25
25 x 3 = 75
A= pi r(squared)
A= 75squared pi
A= 5625 pi inches squared
Answer: D
Step-by-step explanation:
does the letter v contain a corresponding angle?
Is this shape a polyhedron? If it is what is the name of the shape?
Plz help will give brainalist. Please try...
Its 382.98 the answer
Can somebody plz help answer these questions correctly thanks (only if u know how to do this) :3
WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST...promise :DDDD
You are buying a home for $158,950. You have an annual interest rate of 3.72% over the next 30 years. How much is the final cost of the house after 30 years? Round to the nearest hundredth
Please help me with my work
Answer:
If the squares of the two shorter sides add up to the square of the hypotenuse, the triangle contains a right angle.
Step-by-step explanation:
Answer:
Down below is the answer.
Step-by-step explanation:
So, lets remember that the pythagreon theorm is only useable in right traingles.
The formula for the pythagreons theorm is A^2+B^2=C^2
So basically, if this is not a right triangle, the two sides(4ft^2 and 3ft^2) will be equivelent to 5ft^2.
Lets solve the pythagroens theorm and plug in our values:
4^2+3^2=5^2
Now lets use the square roots:
16+9=25
COmbine the two numbers:
25=25
This is correct!
So yes, this is a right triangle.
HOpe this helps! :)
Five apples and four oranges cost $11.80. One apple and six oranges cost $9.90. how much does one orange cost?
Answer:
the cost of orange is 170
Answer:
One orange costs $1.45.
Step-by-step explanation:
Since there are two variables, you have to set up a 2 variable equation.
Let's let a = apples and o = oranges.
So, we can set up this problem as:
5a + 4o = 11.80
1a + 6o = 9.90
You can solve a 2-variable equation using either elimination or substitution. Here, I think it's easier to use substitution. To do that we have to substitute one variable with an equation that uses only the other so that we only have one variable.
We can manipulate our second equation so that it is:
a = 9.90 - 6o
Then, we can plug this in for a in the first equation. So,
5 (9.90 - 6o) + 4o = 11.80
49.5 -30o +4o = 11.80 (Distribute the 5)
49.5 - 26o = 11.80 (Combine like terms)
-26o = -37.7 (Subtract 49.5 from both sides)
o = 1.45 (Divide by -26)
o = 1.45
So, an orange costs $1.45.
please help me ill mark as brilliant if its correct:)
Answer:
(-3, -1/2)
Step-by-step explanation:
[tex]-\frac{2}{3} (-3) - 4*(-\frac{1}{2}) = 2-(-2) = 4[/tex] > 0
Ms. Acton spent $205.60 at Target. If the sales tax is 10%, what was her final bill?
Answer:
$217.94
Step-by-step explanation:
Jesse and her family are painting their house. When they first started, they bought four 16-cup cans of paint. In order to paint their house, it took all of those cans plus they needed another 16-cup can of paint. How many cups of paint did it take Jesse and her family to paint their house?
Answer:
80
Step-by-step explanation:
yes
A box contains 40 cards. Meg takes out 16 cards without looking: 2 red 2 yellow 8 blue and 4 green cards. which statement is most likely to be true about the 40 cards based on megs sampling?
Which shape contains exactly two pairs of parallel lines?
Trapezoid
Rectangle
Equilateral triangle
Acute triangle
Answer:
Rectangle is the correct answer hope it helps you have a great day keep smiling be happy stay safe ☺️
A rectangle is a special type of parallelogram. Any parallelogram has two pairs of opposite parallel sides. A rectangle is a parallelogram where all four angles are the same, and all four angles are 90 degrees.
Keep in mind that not all parallelograms are rectangles, but any rectangle is always a parallelogram.
In slight contrast, a trapezoid has exactly one pair of parallel lines, while the other pair of opposite sides are not parallel. Triangles of any kind can be ruled out because they don't have any parallel sides at all.
Marlene estimates that 48% of 1,220 is about 600. Which estimates describes why this is a reasonable estimate?
Answer:
By rounding
Step-by-step explanation:
48 % means 48 percent which 48 out of 100.
48% of 1220
= 48/100*1220
= 0.48*1220
=585.6 which is almost equal to 600
1) By rounding
Now if we round 48% we get 50 % as 8 > 5 and 1 is added to 4 making it 5 in tens place leaving 0 in unit's place.
So 50% of 1220
0.50*1220= 610
Again rounding 610 would give 600 as 1 is less than 5 and we drop it out from the tens place leaving zero behind.
2) Complementary
IF we subtract 48% from 100% we get 52%.
So 52% of 1220 would be 634.4
IT again can be rounded in 2 ways Either 52% can be rounded to 50% and 634.4 can be rounded to 600.
Both would give 600