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4 years ago

MATH HELP!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Marina CMI [18]4 years ago

8 0

Question 2. :

8^2 = 64 and 9^2 = 81, therefore the square root of 65 falls between these two values, 8 and 9, 64<65<81

Question 3. :

13^2 = 169 and 14^2 = 196, the correct answer is square root of 175, because 169<175<196

Hope this helps, you only need to know the squared values and square roots.

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Solve for x algebra help

mafiozo [28]

Answer:

x=24

Step-by-step explanation:

Hi there!

We are given the following proportion:

$\frac{2}{10}=\frac{3}{x-9}$

And we want to solve for x.

First, let's reduce $\frac{2}{10}$ , as reducing fractions typically makes the process easier

$\frac{2}{10}$ is the same as $\frac{1}{5}$

So:

$\frac{1}{5}=\frac{3}{x-9}$

We can't do anything to $\frac{3}{x-9}$ , but that's okay.

Now we can cross multiply, as this is a proportion

Multiply x-9 by 1 and 3 by 5

1(x-9)=3(5)

Multiply

x-9=15

Now this is an equation

Our goal is to isolate x on one side

So let's add 9 to both sides to remove it from the left side

x-9=15

+9 +9

_________

x=24

Hope this helps!

7 0

3 years ago

Read 2 more answers

Angle T had a measure between 0 and 360 and is coterminal with -170 angle. What is the measure of angle T?

Alika [10]

Answer: The answer is 190°.

Step-by-step explanation: We are to find the measure of ∠T which lies between 0° and 360° and is co-terminal with an angle of measure -170°.

We know that two angles are said to be co-terminal if one is obtained from the other by either adding or subtracting 360°.

So, angles which are co-terminal with -170° are

-170° + 360° = 190°, -170° - 360° = 530°, etc.

Since 190° lies between 0° and 360°, so measure of ∠T is 190°.

Thus, the answer is 190°.

5 0

3 years ago

1.994 x 10^-23 1.67 x 10^-24 what are the difference

Marina86 [1]

Answer:

1.827 x 10^-23

Step-by-step explanation:

(1.994 x 10^-23) - (1.67 x 10^-24) = 1.827 x 10^-23

3 0

4 years ago

What is (-5) the 2 is an exponent just so you know

ValentinkaMS [17]

Answer:

Step-by-step explanation:

(-5)^2

(-5)*(-5)

7 0

3 years ago

Read 2 more answers

Three times a number decreased by 5 equals 10. Write the equation and find that number

KonstantinChe [14]

3x-5=10
To find the number:
3x=10+5
3x=15
x=15/3
x=5

6 0

3 years ago