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2 years ago

Are these correct? ILL MARKYOU AS BRAINLIEST

Mathematics

1 answer:

Soloha48 [4]2 years ago

3 0

Answer:

It definitely seems right, so you should be good!

<h2><u></u></h2><h2><u>Hope This Helped!</u></h2>

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Let f(x) = x^2 − 3x − 7. Find f(−3).

IRINA_888 [86]

Answer:

Step-by-step explanation:

(-3)²-3(-3)-7

9+9-7

7 0

1 year ago

Read 2 more answers

What is the perimeter of a rectangle with sides 2/3x+10 and 1/3x+5

gogolik [260]

Answer:

The perimeter of the rectangle is 2x+ 30

Step-by-step explanation:

Sides of the rectangle are 2/3x+10 and 1/3x+5

Now, Perimeter of the Rectangle = 2(Length + Breadth)

Here, sum of the sides = $(\frac{2}{3}x + 10 ) + (\frac{1}{3}x + 5 ) = (\frac{2}{3}x +\frac{1}{3}x ) + ( 10+ 5 )$

adding like terms with like terms, we get

( $\frac{2x + x}{3}) + 15 = \frac{3x}{3} + 15$

Hence, Sum = (x + 15)

Now, 2(Length + Breadth) = 2(x+15) = 2x + 30

hence, the perimeter of the rectangle = 2x+ 30

8 0

3 years ago

1500 computer; 7% tax

anyanavicka [17]

If this is adding or subtracting you can get your answer by using the formula part over whole so turning it into a fraction and solving so you would have 1500 over 7% hope this helps

3 0

2 years ago

What is a voluntary response sample?Choose the correct answer below.A.A sample in which the sample size is very large.B.A sampl

Svet_ta [14]

Answer:

B. A sample in which the subjects themselves decide whether to be included in the study.

Step-by-step explanation:

In other words a voluntary response sample is a sample made up of volunteers o people who choose to be inlcuded.

5 0

3 years ago

No links please. Fill in the blanks. 67ns=[?]x10^[?]s

cluponka [151]

Using scientific notation, it is found that:

67 ns = $6.7 \times 10^{-8}$ s

<h3>What is scientific notation?</h3>

A number in scientific notation is given by:

$a \times 10^b$

With the base being $a \in [1, 10)$ .

In this problem, the amount is of 67 ns.

Each ns has $10^{-9}$ seconds, hence:

$67ns = 67 \times 10^{-9}s$

We want the base between 1 and 10(exclusive), hence, we move the decimal digit one digit to the left and add one to the exponent, and the representation is:

67 ns = $6.7 \times 10^{-8}$ s

You can learn more about scientific notation at brainly.com/question/16394306

7 0

1 year ago