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Vesnalui [34]
3 years ago
8

Which function models the area of a rectangle with side lengths of 2x – 4 units and x + 1 units? What is the area when x = 3?

Mathematics
1 answer:
evablogger [386]3 years ago
3 0

Answer:

D. f(x) = 2x^2 − 2x − 4; A = 8

Step-by-step explanation:

The area of a rectangle is given by the formula length x wide.

In this case we have that the length is 2x -4 and the wide is x +1

Therefore, the area will be:

A= (2x-4)(x+1)= 2x^2+2x-4x-4=2x^2-2x-4\\A= 2x^2-2x-4

Now, when x = 3 we would have:

A=2(3)^2-2(3)-4= 2(9)-6-4=18-10=8\\A=8

Thus, the right answer is D.

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GuDViN [60]

Answer:

The diameter of Circle P is the same length as the radius of Circle Q.

Step-by-step explanation:

The radius of Circle Q is half of 52cm. So you would divide 52 by 2 and get 26cm as the radius of Circle Q. Therefore, the length of the diameter of Circle P is the same length as the radius of Circle Q.

4 0
3 years ago
Sarah and Bryan went shopping and spent a total of $47.50 Bry an spent $15.50 less than what Sarah spent how much did bryan spen
Bogdan [553]
Since Bryan spent $15.50 less than Sarah, you would start by dividing the total amount they spent together in half.

$47.50 ÷ 2 = $23.75

Then you would take Bryan's 1/2 of the total and subtract $15.50.

$23.75 - $15.50 = $8.25

So, it looks like Bryan spent $8.25.

Check step:

If you add it all back together:

Sarah + Sarah Bryan = Total
$23.75 + $15.50 + $8.25 = $47.50
8 0
3 years ago
What is the value of s?<br> units<br> 0<br> 5<br> В<br> 8<br> 15<br> S<br> D
Diano4ka-milaya [45]

Answer:

13

Step-by-step explanation:

7 0
3 years ago
Can someone help me here pls thanks!​
vesna_86 [32]

Using proportions, it is found that the measure of the inscribed angle B is of 30º.

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

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In a circle, the inscribed angle is half the measure of the outside angle. Hence, in this problem, the measure of angle B is of 50% of 60º, hence:

m<B = 0.5 x 60º = 30º.

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

4 0
2 years ago
Can someone please help me with this?
viktelen [127]

Answer:

4

Step-by-step explanation:

hopes this helps i have a F in math so not sure

6 0
2 years ago
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