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blsea [12.9K]
3 years ago
7

Tobias won a $100 gift card at a local Fortnite tournament. He decided that he wanted to

Mathematics
1 answer:
Scrat [10]3 years ago
5 0

Answer:

100-5.25x            100-5.25(15)= 22.25

Step-by-step explanation:

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I NEED HELP ASAP!!!!!!!!!!!!!!!!
Snowcat [4.5K]

Answer:

1/6

Step-by-step explanation:

If you divide the fractions to decimals 1/6 equals .16 which is closest to 0

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2 years ago
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Sonia used $12.50 to buy a new journal. She has $34.25 left in her savings account. How much money did Sonia have before she bou
natali 33 [55]
  1. X-12.50=34.25
  1. Add 12.50 to both sides
  2. X=46.75
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3 years ago
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Use the model to create zero pairs. What is an equivalent expression that has two terms?
ioda

Answer:

x+1

Step-by-step explanation:

just did it all you have to do is put that in and you got it write

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3 years ago
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A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th
mash [69]

Answer:

The rocket hits the gorund after approximately 10.71 seconds.

Step-by-step explanation:

The height of the rocket <em>y</em> in feet <em>x</em> seconds after launch is given by the equation:

y=-16x^2+165x+69

And we want to find the time in which the rocket will hit the ground.

When it hits the ground, its height above ground will be 0. Hence, we can let <em>y</em> = 0 and solve for <em>x: </em>

<em />0=-16x^2+165x+69<em />

We can use the quadratic formula:

\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

In this case, <em>a</em> = -16, <em>b</em> = 165, and <em>c </em>= 69.

Substitute:

\displaystyle x=\frac{-165\pm\sqrt{(165)^2-4(-16)(69)}}{2(-16)}

Evaluate:

\displaystyle x=\frac{-165\pm\sqrt{31641}}{-32}=\frac{165\pm\sqrt{31641}}{32}

Hence, our solutions are:

\displaystyle x_1=\frac{165+\sqrt{31641}}{32}\approx 10.71\text{ or } x_2=\frac{165-\sqrt{31641}}{32}\approx-0.40

Since time cannot be negative, we can ignore the first answer.

So, the rocket hits the gorund after approximately 10.71 seconds.

7 0
2 years ago
PLS HELP SUPER EASY WILL GIVE BRAINLIEST
anzhelika [568]

Answer:

-2x +4 = 20

Step-by-step explanation:

given

- 2x + 4 = 20

by making x the subject, you need to subtract 4 from 20

thus

- 2x = 20 - 4

- 2x = 16

and also you need to divide through by -2

\frac{ - 2x}{2}  =  \frac{16}{ - 2}

x =  - 8

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2 years ago
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