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Marianna [84]
2 years ago
7

What is y equal to when x = 8 y=-3x - 1

Mathematics
2 answers:
lesya [120]2 years ago
7 0
Answer:y= -25

Explanation: you put 8 into the equation so it would look like y=-3(8)-1 then you solve it
Veronika [31]2 years ago
7 0

Answer:

y = -25

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

y = -3x - 1

x = 8

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                               y = -3(8) - 1
  2. Multiply:                                          y = -24 - 1
  3. Subtract:                                         y = -25
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Tobias dropped a tennis ball from a height of 60 meters. The time in seconds it takes for the ball to fall is 60 feet is 0.25 √6
aleksandrvk [35]

Answer:-1)The three sets of approximation of time will be

Time taken to fall tennis ball from height of 60 m =35.41014 s ≈35.410 s (to the nearest thousandth)

≈35.41s  (to the nearest hundredth)

≈35.5 seconds(to the nearest tenth)

2)Time by the ball to hit the ground =35.5 seconds

Step-by-step explanation:

Time taken to fall tennis ball from height of 60 feet =  0.25 √60 s

So,time taken to fall tennis ball from height of 1 foot =0.25√60 divided by 60=\frac{0.25\sqrt{60} }{60}s

We know that 1 m = 0.3048 foot

⇒60 m =60×0.3048=18.288 feet

therefore, Time taken to fall tennis ball from height of 60 m = 18.288 ×time taken to fall tennis ball from height of 1 foot=\frac{0.25\sqrt{60} }{60}\cdot18.288=35.41014\ s

∴Time taken to fall tennis ball from height of 60 m =35.41014 s ≈35.410 s (to the nearest thousandth)

≈35.41s  (to the nearest hundredth)

≈35.5 seconds(to the nearest tenth)

7 0
3 years ago
At the beach 29% of people have red towels and 18% have white towels if the rest have blue ,what percentage of the people at the
Vikki [24]
The percent of people with blue towels would be the remaining percent when you add the red and wight towels together.
a.k.a
53% would have blue towels.


6 0
3 years ago
JUST THE FIRST ONE EASY PLS ASAP
Sladkaya [172]

Answer:

<h2>For the first triangle, <u>x equals 22cm.</u></h2>

Here's how:-

x is the altitude or height of the triangle. To find it, we can use the Pythagoras theorem:-

altitude^{2} + base^{2} = hypotenuse^{2}

The base is 120cm and the hypotenuse is 122cm

Putting this in the equation, we get:-

altitude^{2} + 120^{2} = 122^{2}

altitude^{2} =  122^{2}-  120^{2}

altitude^{2} = 14884 - 14400

altitude^{2} = 484

altitude = \sqrt{484}

<h3>altitude = 22cm</h3><h2><u>So, x = 22cm</u></h2>

7 0
3 years ago
Solve for p: -11=p-9​
Westkost [7]

Answer:

p=-2

Step-by-step explanation:

-11=p-9​

Add 9 to each side

-11+9=p-9​+9

-2 =p

7 0
3 years ago
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Given the expression below, what are the missing values, respectively?
asambeis [7]

Answer:

F.

Step-by-step explanation:

20=4*5

9=4+5

7 0
3 years ago
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