All categories

3 years ago

NEED HELP ASAPalgebra 2

Mathematics

2 answers:

Luden [163]3 years ago

3 0

Answer:

x = sqrt(17)

Step-by-step explanation:

Since this is a right triangle we can use the Pythagorean theorem

a^2 + b^2 = c^2

Let the unknown side be x

8^2 + x^2 = 9^2

64 + x^2 = 81

Subtract 64 from each side

x^2 = 81-64

x^2 =17

Taking the square root of each side

x = sqrt(17)

MaRussiya [10]3 years ago

3 0

Answer:

x = √17

Step-by-step explanation:

Your question have a right triangle.

So, we could use the Pythagorean Theorem.

Pythagorean Theorem is a² + b² = c².

So, 8² + n² = 9².

8² is 64, and 9² is 81.

So, 'n' is 81 - 64.

Let's see... 81 - 64 is 17.

So, It is √17.

Because when you use the Pythagorean Theorem, it is 8² + (√17)² = 9².

Otherwise, 64 + (√17)² = 81.

And, √17 is 4.12 when rounding to a hundredth.

Hope it helps!

Bye!

You might be interested in

Write as a mixed fraction: 22 / 3

lakkis [162]

7 1/3

I think this is it, i would like for u to get a second opinion.

4 0

3 years ago

Read 2 more answers

Two parallel lines cut by a transversal. What is the value of x?

hodyreva [135]

The 2 angles are alternate angles so they are equal:-

3x + 4 = 115
3x = 115-4 = 111
x = 37 answer

4 0

3 years ago

2. Determine the sum of the first 400 ODD numbers.

il63 [147K]

Odd numbers take the form $2n-1$ , where $n\ge1$ is an integer. When $n=400$ , the last odd number would be 799. So we're adding

$S=1+3+5+\cdots+795+797+799$

By reversing the order of terms, we have

$S=799+797+795+\cdots+5+3+1$

and we can pair up terms in both sums at the same position to write

$2S=(1+799)+(3+797)+(5+795)+\cdots(795+5)+(797+3)+(799+1)$

so that we are basically adding 400 copies of 800, and from there we can find the value of the sum right away:

$2S=400\cdot800\implies S=160,000$

###

We could also make use of the formulas,

$\displaystyle\sum_{i=1}^n1=n$

$\displaystyle\sum_{i=1}^ni=\dfrac{n(n+1)}2$

We have

$S=\displaystyle\sum_{i=1}^{400}(2i-1)=2\sum_{i=1}^{400}i-\sum_{i=1}^{400}1=400(400+1)-400=400^2=160,000$

3 0

3 years ago

A 900-kg compact car moving at 60 mi/hr has approximately 320 000 Joules of kinetic energy. Estimate its new kinetic energy if i

Doss [256]

You need to divide 320000 by 2 since the speed was divided by 2. The final answer is ...... 160000 Joules.

I hope this helped!!!! :D

7 0

3 years ago

In what way is the survey question biased? (PLEASE HELP ME AND SEE THE PICTURE BELOW)

Ksju [112]

Answer: Hello there!

well first of all Biased means : unfairly prejudiced for or against someone or something. So I think it is biased becuase it says you use your computer. and the answer choices are trying to limit you. Hope this helps.

Step-by-step explanation:

5 0

3 years ago

NEED HELP ASAPalgebra 2​

NEED HELP ASAPalgebra 2