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4 years ago

X( to the 2nd power)= 343 (what is x ?)

Mathematics

2 answers:

Alex777 [14]4 years ago

5 0

0 or 18.5203 is the answer

valentinak56 [21]4 years ago

3 0

X WOULD BE 18.52025918

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What is the y-intercept of the line shown? A -1 B 0 C 0.5 D 1

Orlov [11]

Answer:

A. -1

Step-by-step explanation:

The y-int is where the line crosses the y-axis when x=0.

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3 years ago

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What is the slope of the thing

elena-14-01-66 [18.8K]

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-2/3

Step-by-step explanation:

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2 years ago

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A group of college students is volunteering for Homes for the Community during their spring break. They are putting the finishin

Nonamiya [84]

Answer: 2.72 hours

Step-by-step explanation:

Let's call $t_1$ while it takes Wade to paint the room

Let's call $t_2$ while it takes Rhonda to paint the same room.

Then we know that:

$t_1 = 5\ hours\\t_2 = 6\ hours$ .

Let's call it t as it takes Rhonda and Wade to paint the same room working together.

Now we use the following formula to calculate t.

$\frac{1}{t}=\frac{1}{t_1}+\frac{1}{t_2}$

$\frac{1}{t}=\frac{1}{5}+\frac{1}{6}$

$\frac{1}{t}=\frac{11}{30}$

$t=\frac{30}{11}$

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If they work together they will be able to paint the room in 2.72 hours

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3 years ago

In Spanish club, the boy-girl ratio is 8-9. if 72 members are girls, how many are boys?

ololo11 [35]

Answer:

The number of boys are 64.

Step-by-step explanation:

We have,

The ratio of the boy to girl is 8:9.

Total number of girls are 72.

Let total boys are 8x and total girls are 9x.

According to the question,

$9x=72\\\\x=8$

Since, number of boys are 8x. So,

$B=8x=8\times 8=64$

So, the number of boys are 64.

5 0

3 years ago

C D

denis23 [38]

Answer:

Option (4)

Step-by-step explanation:

Given system of equations is,

y = -x²- 4x - 3

y = 2x + 5

To get the solution of the system of equations algebraically,

2x + 5 = -x²- 4x - 3

Now combine like terms onto one side of the equation.

-x² - (4x + 2x) - (3 + 5) = 0

x² + 6x + 8 = 0

Then factorize the equation,

x² + 4x + 2x + 8 = 0

x(x + 4) + 2(x + 4) =0

(x + 2) (x + 4) = 0

x = -2, 4

Option (4) is the answer.

4 0

3 years ago