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guajiro [1.7K]
3 years ago
9

What is the area of the red? Use 3.14 for π.

Mathematics
1 answer:
grigory [225]3 years ago
8 0
Ask your teacher that’s all you have to do.
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Find the y-intercept of the line -4× - 2y =16​
Oksi-84 [34.3K]

Answer:

The y intercept is (0,-8)

Step-by-step explanation:

To find the y intercept, set x = 0 and solve for y

-4x -2y = 16

-4(0) -2y =16

-2y = 16

Divide by -2

-2y/-2 = 16/-2

y = -8

The y intercept is (0,-8)

6 0
4 years ago
Read 2 more answers
16x^2-16x=5 solve the equation by completing the square
Ivanshal [37]

This is your answer: x= -1/4 or x=5/4. Plze mark me brainiest:)

7 0
3 years ago
A car's position is given by s(t) = {3 – 5t? + 7t hundreds of meters with t in minutes.
Nadya [2.5K]

Answer:

A) (1 s, 2.3 s)

B) (-4 m/s², 3.8 m/s²)

Step-by-step explanation:

The car's position which is the distance is given by the equation;

s(t) = t³ - 5t² + 7t

A) Velocity is the first derivative of the distance. Thus;

v(t) = ds/dt = 3t² - 10t + 7

At v = 0, we have;

3t² - 10t + 7 = 0

Using quadratic formula, we have;

t = 1 and t = 2.3

Thus, time at velocity of 0 is t = (1 s, 2.3 s)

B) acceleration is the derivative of the velocity. Thus;

a(t) = dV/dt = 6t - 10

At velocity of 0, we got t = 1 and t = 2.3

Thus;

a(1) = 6(1) - 10 = -4 m/s²

a(2.3) = 6(2.3) - 10 = 3.8 m/s

Thus, a(t) at v = 0 gives; (-4 m/s², 3.8 m/s²)

8 0
3 years ago
If BC = 5 and CD = 26, find AC.
Blababa [14]

Answer:

AC=\sqrt{130}

Step-by-step explanation:

AC is the geometric mean.  Solve it using this proportion:

\frac{BC}{AC}=\frac{AC}{CD}

Now fill in the values we know:

\frac{5}{AC}=\frac{AC}{26}

Cross multiply to get

(AC)^2=130

That means that

AC = \sqrt{130}, which, in decimal form is

AC = 11.40175425

3 0
3 years ago
Whats the greatest common factor of 42,28, and 70​
kobusy [5.1K]

Answer:

14

Step-by-step explanation:

70

  1 * 70

  5 * 14

  7 * 10

42

 1 * 42

 3 * 14

 7 * 6

28

 1 * 28

 2 * 14

 7 * 4

pick the largest factor from 70 and check it they also work with the other two. 14 is the GCF.

7 0
3 years ago
Read 2 more answers
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