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Yanka [14]
2 years ago
6

P = 3t² + 7t Work out the value of P when t = -4

Mathematics
1 answer:
Tanzania [10]2 years ago
8 0

Answer:

P = 20

Step-by-step explanation:

Hello!

We can solve this by substituting -4 for t.

<h3>Evaluate</h3>
  • P = 3t² + 7t
  • P = 3(-4²) + 7(-4)

<u>Remember that any negative number squared is the absolute value of that number squared.</u>

  • P = 3(|-16|)  - 28
  • P = 3(16) - 28
  • P = 48 - 28
  • P = 20

The final evaluation is 20.

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Ito washes 7 cars in 3 hours. Joan
Elden [556K]

Answer:

Ito

Step-by-step explanation:

Make them to their closest common multiple which is twelve.

Next times 7 by 4 as 3*(4) is 12

Then time 9 by 3 as 3*(4) is 12

7*4=28

9*3=27

Therefore ito washes at a faster rate

5 0
3 years ago
Read 2 more answers
The measure of a base isosceles triangle is 43? what is the measure of the vertex angle
Anestetic [448]

Answer:

The vertex angle is 94 degrees

Step-by-step explanation:

Let the vertex angle be x

Mathematically, the base angles of an isosceles triangle are the same

So if one of the base angles is 43 degrees, then the other base angle would be 43 degrees too

Mathematically, the sum of angles in a triangle is 180 degrees

Thus;

43 + 43 + x = 180

x = 180-86

x = 94 degrees

4 0
3 years ago
Anyone understand how to do this??
Oxana [17]

Answer:

T=-11

Step-by-step explanation:

y2-y1/x2-x1

=t-(-1)/9-10

=t+1/9-10

=t+1/-1

=-11+1/1

=-10/1

=-10

Hope this helps :)

7 0
3 years ago
Read 2 more answers
What is the overall charge of phosphide
Nuetrik [128]

Answer:

negatively charged

Step-by-step explanation:

4 0
2 years ago
Choose Yes or No to tell whether the Addition Property of Inequality can be used to solve each statement. w – 4 &gt; –10 12 ≥ 20
Alex

Answer:

No

Step-by-step explanation:

The inequality will not be the same if the same amount is added both sides.

The addition property states that if the same quantity is added to both sides, then the inequality still remains true. Take for example:

let x, y, and z be real numbers. It follows that:

if x ≥ y, then x + z ≥ y + z

This holds true for whatever value of z

If x ≤ y, then x + z ≤ y + z

The inequality remains true.

4 0
3 years ago
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