Ask question

Ask question

All categories

2 years ago

6

A student took a total of 4 tests over the course of 8 weeks. How many weeks of school will the student attend to take a total o

f 20 tests?

1 answer:

Julli [10]2 years ago

3 0

Answer:

4/8 = 20/x

20 x 8 = 160

160 ÷ 4 = 40

the student will attend 40 weeks of school

You might be interested in

a gardener is planting trees and flowers. she has 735 trees to plant and uses this pattern: a tree and then two flowers, then th

nalin [4]

Answer: A gardener would need 1470 flowers.

Step-by-step explanation:

The answer is 1470 flowers because it’s just a ratio for every one tree there’s two flowers.

5 0

2 years ago

Read 2 more answers

Help Me with this question please

artcher [175]

Answer:

22

Step-by-step explanation:

The abs of y is 29 because 29 is positive

51 - 29 = 22

4 0

3 years ago

Read 2 more answers

16) Please help with question. WILL MARK BRAINLIEST + 10 POINTS.

Katyanochek1 [597]

We will use the sine and cosine of the sum of two angles, the sine and consine of $\frac{\pi}{2}$ , and the relation of the tangent with the sine and cosine:

$\sin (\alpha+\beta)=\sin \alpha\cdot\cos\beta + \cos\alpha\cdot\sin\beta

\cos(\alpha+\beta)=\cos\alpha\cdot\cos\beta-\sin\alpha\cdot\sin\beta$

$\sin\dfrac{\pi}{2}=1,\ \cos\dfrac{\pi}{2}=0$

$\tan\alpha = \dfrac{\sin\alpha}{\cos\alpha}$

If you use those identities, for $\alpha=x,\ \beta=\dfrac{\pi}{2}$ , you get:

$\sin\left(x+\dfrac{\pi}{2}\right) = \sin x\cdot\cos\dfrac{\pi}{2} + \cos x\cdot\sin\dfrac{\pi}{2} = \sin x\cdot0 + \cos x \cdot 1 = \cos x$

$\cos\left(x+\dfrac{\pi}{2}\right) = \cos x \cdot \cos\dfrac{\pi}{2} - \sin x\cdot\sin\dfrac{\pi}{2} = \cos x \cdot 0 - \sin x \cdot 1 = -\sin x$

Hence:

$\tan \left(x+\dfrac{\pi}{2}\right) = \dfrac{\sin\left(x+\dfrac{\pi}{2}\right)}{\cos\left(x+\dfrac{\pi}{2}\right)} = \dfrac{\cos x}{-\sin x} = -\cot x$

3 0

3 years ago

What is the answer for 23x9+(91+7)

mestny [16]

Answer:

305

Step-by-step explanation:

23×9+98

207+98

305

3 0

3 years ago

Read 2 more answers

HIGH POINTS/WILL MARK BRAINLIEST

Art [367]

Answer:

The leading term is 2x^7. Since n is odd and a is positive, the end behavior is down and up.

5 0

2 years ago