All categories

4 years ago

If you get a 70 on a test and you get 21 questions right how many questions are on teh test

Mathematics

1 answer:

Brrunno [24]4 years ago

7 0

21 70
x 100

x=(21*100)/70=30

You might be interested in

Only answer if you know! no spams :)

Ghella [55]

Answer:

0%: Impossible

25%: Unlikely

50%: Equally likely

75%: Likely

100%: Certain

5 0

2 years ago

Read 2 more answers

Solve the right triangle, ΔABC, for all the missing side and angles to the nearest tenth given sides a = 10.6 and b = 19.2.

Aliun [14]

Answer:

Part 1) $c=21.9\ units$

Part 2) $B=61.1\°$

Part 3) $A=28.9\°$

Part 4) $C=90\°$

Step-by-step explanation:

step 1

Find the length side c

Applying the Pythagoras Theorem

$c^{2}=a^{2}+b^{2}$

substitute the given values

$c^{2}=10.6^{2}+19.2^{2}$

$c^{2}=481$

$c=21.9\ units$

step 2

Fin the measure of angle B

we know that

In the right triangle

$tan(B)=b/a$

substitute the given values

$tan(B)=19.2/10.6$

$B=arctan(19.2/10.6)=61.1\°$

step 3

Find the measure of angle A

we know that

The measure of interior angles in a triangle must be equal to 180 degrees

∠A+∠B+∠C=180°

Remember that in a right triangle the measure of angle C is 90 degrees

we have

$B=61.1\°$

$C=90\°$

substitute

$A+61.1\°+90\°=180\°$

$A=28.9\°$

4 0

3 years ago

Simplify the problem <br><br> 6(x-2)+7

Maurinko [17]

Answer:

6x - 5

Step-by-step explanation:

distribute

6x - 12 + 7

combine like terms

6x - 5

4 0

2 years ago

Read 2 more answers

What is the unit rate??

telo118 [61]

The unit rate is 5.5
Equation: 11 divided by 2=5.5
Unit rate is how much it is for just one object

6 0

4 years ago

What is 4 to the z power

kherson [118]

Answer:

Step-by-step explanation: 2^2z

4 0

3 years ago