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3 years ago

-4zsquared +zsquared

Mathematics

1 answer:

TEA [102]3 years ago

5 0

-4

Step-by-step explanation:

-4z² + z²

let's assume you have z² and you're owing 4z², you'll pay the z² you have and you'll still owe 4

so that is -4

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What value of x is in the solution set of 8x - 6> 12+2x

MrRa [10]

Answer:

x > 3

Step-by-step explanation:

8x - 6> 12+2x

+6 +6

8x > 18 + 2x

-2x -2x

6x > 18

/6 /6

x > 3

6 0

4 years ago

WILL GIVE BRAINLIEST!!!

Bezzdna [24]

<h3>Solution for Line A and B:</h3>

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

$(-\frac{3}{13},\frac{42}{13})$

Equation Form:

$x=-\frac{3}{13},y=\frac{42}{13}$

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2 years ago

The scale factor of a model of a swimming pool to the actual swimming pool is 1 to 20. The

denis23 [38]

Answer:

$0.05\ m^3$

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

z ----> the scale factor

x ---> the volume of the model of a swimming pool

y ---> the volume of the actual swimming pool

$z^3=\frac{x}{y}$

we have

$z=\frac{1}{20}$

$y=400/ m^3$

substitute

$(\frac{1}{20})^3=\frac{x}{400}$

solve for x

$\frac{1}{8,000}=\frac{x}{400}$

$x=\frac{400}{8,000}$

$x=0.05\ m^3$

8 0

4 years ago

A youth basketball coach has 12 kids on his team and he selects 5 kids to start each game. To be fair he wants to start a differ

alisha [4.7K]

$_{12}C_5=\dfrac{12!}{5!7!}=\dfrac{8\cdot9\cdot10\cdot11\cdot12}{120}=792$

792>20, so yeah, he will be able.

8 0

3 years ago

Jerry's team has played 8 games of basketball. During those 8 games his team scored 59, 66, 56, 63, 42, 55, 62 and 51. What is t

zavuch27 [327]

Answer:

To calculate the mean of a set of data, you have to work out the sum of the data (in this case, you need to work out the sum of all the points) and divide it by the number of data points there are (in this case, number of games played).

So you have to do:

(67 + 45 + 84 + 55 + 73 + 36 + 80 + 62 + 38)/9 = 60

The mean number of points is 60.

Step-by-step explanation:

please mark as brainiest

8 0

3 years ago

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