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Leno4ka [110]
3 years ago
11

What equation matches the table of values

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
6 0
The answer is y =3x
Explaining
y= 3*-3
y=-9
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Principal Lopez asked her 500 students to vote on the school's annual gift. 300 students voted to donate a telescope for the sci
Maksim231197 [3]

Using the percentage concept, it is found that 60% of the students voted to donate a telescope.

<h3>What is a percentage?</h3>

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

P = \frac{a}{b} \times 100\%

In this problem:

  • The total amount is the number of students, which is of b = 500.
  • 300 voted to donate, hence a = 300.

The <em>percentage </em>is given by:

P = \frac{300}{500} \times 100\% = 60\%

60% of the students voted to donate a telescope.

More can be learned about the percentage concept at brainly.com/question/10491646

5 0
2 years ago
Solve for x<br> 41 – 3 = 7<br> Enter your answer in the box.<br> X =
AnnyKZ [126]

Answer: X= 2.5

Step-by-step explanation:

7 0
3 years ago
A model rocket is launched directly upward at a speed of 20 meters per second from the ground. The function f(t)=−4.9t2+20t, mod
Nataly [62]

Answer:

The rocket will reach its highest point about 2.04 seconds.

Step-by-step explanation:

The function:

f(t)=-4.9t^2+20t

Models the relationship between the height of the rocket and the time after launch t in seconds.

Since this is a quadratic function, the rocket will reach its highest point at its vertex. The vertex of a quadratic is given by:

\displaystyle \Big(-\frac{b}{2a}, f\Big(-\frac{b}{2a}\Big)\Big)

In this case, a = -4.9, b = 20, and c = 0. Thus:

\displaystyle t=\frac{-(20)}{2(-4.9)}=\frac{10}{4.9}\approx 2.04

The rocket reaches its maximum height after 10/4.9 or about 2.04 seconds.

Further Notes:

Then the maximum height of the rocket will be f(10/4.9):

\displaystyle f\Big(\frac{10}{4.9}\Big)=-4.9\Big(\frac{10}{4.9}\Big)^2+20\Big(\frac{10}{4.9}\Big)\approx20.41\text{ feet}

4 0
3 years ago
What expressions have a value of 16/81 ​
Flura [38]

Answer:

(2/3)⁴, (4/9)² apply to 16/81

Step-by-step explanation:

16/81

8 * 2/27 * 3

4 * 2 * 2/9 * 3 * 3

2 * 2 * 2 * 2/3 * 3 * 3 * 3

7 0
3 years ago
How do you calculate a t-test in SPSS?
Sergeu [11.5K]

Answer:

To run an Independent Samples t Test in SPSS, click Analyze > Compare Means > Independent-Samples T Test. The Independent-Samples T Test window opens where you will specify the variables to be used in the analysis. All of the variables in your dataset appear in the list on the left side.

6 0
3 years ago
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