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2 years ago

I need help with this if you can do them all I would deeply appreciate it:)

Mathematics

1 answer:

tangare [24]2 years ago

6 0

Answer:

x = 4, x = -4

Step-by-step explanation:

-2 |x| = -8
|x| = 4
x = ±4

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At a table tennis tournament, two games went on for a total of 32 minutes. One game took 12 minutes longer than the other. How l

kotykmax [81]

Answer: game 1 10 mins game 2 22

Step-by-step explanation:

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3 years ago

It is almost the end of the grading period. I have 730 out of 880 points so far in my math class which means I currently have a

maksim [4K]

What is being asked here? Are they asking for the passing grade or the total with all the other 90 points added? I think it is A, 90%

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3 years ago

Read 2 more answers

What does N equals in the following equation? N +6+9=32 multiple choice answers are ? A.) 10 B) 20 C) 30

mafiozo [28]

Answer

$\boxed{ \boxed{ \bold{ \purple{N = 17}}}}$

Step by step explanation

$\sf{N + 6 + 9 = 32}$

Add the numbers

⇒ $\sf{N + 15 = 32}$

Move constant to right hand side and change it's sign

⇒ $\sf{N = 32 - 15}$

Calculate the difference

⇒ $\sf{N = 17}$

Hope I helped!

Best regards!!

5 0

3 years ago

Read 2 more answers

Find the exact length of the curve. x = 9 + 9t2, y = 6 + 6t3, 0 ≤ t ≤ 4

andrew11 [14]

ANSWER

$=102 \sqrt{ 17}$

EXPLANATION

The equation of the curve is:

$x = 9 + 9 {t}^{2}$

$y = 6 + 6 {t}^{3}$

We differentiate to obtain:

$\frac{dx}{dt} = 18t$

$\frac{dy}{dt} = 18t$

The length of the arc

$l = \int _0 ^{4} \sqrt{ {( \frac{dx}{dt} )}^{2} + {( \frac{dy}{dt} )}^{2} } dt$

This implies that:

$= \int _0 ^{4} \sqrt{ {( 18t )}^{2} + {( {18 {t}^{2} } )}^{2} } dt$

$= \int _0 ^{4} 18t \sqrt{ 1+ { {18 {t}^{2} } }} dt$

$=102 \sqrt{ 17}$

3 0

3 years ago

Which of the following could not be a value of x?<br> a -10<br> b-9<br> c-10.5<br> d-9.5

maw [93]

We know that sum of two sides in any triangle must be greater than the measure of third (longest) side otherwise triangle will not be formed.

According to picture longest side is 18

So this triangle must follow inequality

9+x>18

or 9-9+x>18-9

or x>9

that means value of x must be more than 9.

choices a, c, d are greater than 9 except choice b

Hence choice B-9 is the final answer.

7 0

2 years ago