3 years ago

5) 10r2 + 3 = 813how do I solve by square roots

Mathematics

2 answers:

kodGreya [7K]3 years ago

7 0

10r² + 3 = 813

10r² = 813 - 3

10r² = 810

r² = 810 ÷ 10

r² = 81

r = √81

r = 9

So, the value of r is 9

Hope it helpful and useful :)

Oksanka [162]3 years ago

6 0

The answer is r^1=-9, r=-9 because you have to solve the equation.

You might be interested in

A survey asked only girls to identify their favorite item on the

MA_775_DIABLO [31]

Answer:

Step-by-step explanation:

A biased sample is a sample that does not accurately represent the population.

The survey asked only girls, but we can assume this school has both boys and girls. Therefore, by only asking girls, it creates a bias, because the boys in the school are not represented.

Therefore, the correct choice is B: biased sample.

6 0

3 years ago

Please help if you know how!

VLD [36.1K]

Answer:

6 size of a whole square that the answer

5 0

3 years ago

Two numbers multiply to -24 and add up to -5

svlad2 [7]

Answer:

-8 and 3

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

2x^2 -7= 74 please show all work

skad [1K]

$2x^2-7=74\\
2x^2=81\\
x^2=\dfrac{81}{2}\\
x=-\sqrt{\dfrac{81}{2}} \vee x=\sqrt{\dfrac{81}{2}}\\
x=-\dfrac{9}{\sqrt2} \vee x=\dfrac{9}{\sqrt2}}\\
x=-\dfrac{9\sqrt2}{2} \vee x=\dfrac{9\sqrt2}{2}}\\$

8 0

3 years ago

152.5 is 250% of what number

MakcuM [25]

152.5 is 250% of the number, 61

7 0

4 years ago

Read 2 more answers

5) 10r2 + 3 = 813how do I solve by square roots ​

5) 10r2 + 3 = 813how do I solve by square roots