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Lera25 [3.4K]
3 years ago
12

Given h(t)=-2(t+5)^2+4, find h(-8)

Mathematics
2 answers:
garik1379 [7]3 years ago
6 0

Answer:

-14

Step-by-step explanation:

h(-8) = -18 + 4 = -14

alexandr402 [8]3 years ago
5 0
Substitute -8 for t in  <span>h(t)=-2(t+5)^2+4:

h(-8) = -2(-8+5)^2 + 4    =  -2(-3)^2 + 4    =    -2(9) + 4  = -18 + 4  

h(-8) = -18 + 4 = -14 (answer)</span>
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valina [46]
I think 28fa haha s an
6 0
2 years ago
(9y® + 2)2 =<br> combine like terms
Vsevolod [243]

Answer:

81y^2+36y+4

Step-by-step explanation:

First: 9y^2= 81y

Next: 2^2= 4

Then: 9y times 2= 18

Last: 18 times 2= 36y

(this : ^2 means squared in case you did not know)

4 0
3 years ago
The perimeter of a triangular field is 120m. Two of the sides are 21m and 40m.Calculate the largest angle of the field.
Mama L [17]

Answer:

the largest angle of the field is 149⁰

Step-by-step explanation:

Given;

perimeter of the triangular filed, P = 120 m

length of two known sides, a and b = 21 m and 40 m respectively

The length of the third side is calculated as follows;

a + b + c = P

21 m  + 40 m  + c = 120 m

61 m +  c = 120 m

c = 120 m - 61 m

c = 59 m

                         B

                     ↓            ↓  

                  ↓                          ↓

                ↓                                       ↓

            A →  →  → →  →  → →  → →    →    →  C

Consider ABC as the triangular field;

Angle A is calculated by applying cosine rule;

a^2 = b^2 + c^2 - 2bc \ Cos A\\\\Cos \ A = \frac{b^2 + c^2 - a^2}{2bc} \\\\Cos \ A = \frac{40^2 + 59^2 - 21^2}{2 \times 40 \times 59} \\\\Cos \ A = 0.983\\\\A = Cos ^{-1} (0.983)\\\\A = 10.6 \ ^0

Angle B is calculated as follows;

Cos \ B = \frac{a^2 + c^2 - b^2}{2ac} \\\\Cos \ B = \frac{21^2 + 59^2 - 40^2}{2 \times 21 \times 59} \\\\Cos \ B = 0.937\\\\B= Cos ^{-1} (0.937)\\\\B = 20.5 \ ^0

Angle C is calculated as follows;

Cos \ C = \frac{a^2 + b^2 - c^2}{2ab} \\\\Cos \ C = \frac{21^2 + 40^2 - 59^2}{2 \times 21 \times 40} \\\\Cos \ C = -0.857\\\\C = Cos ^{-1} (-0.857)\\\\C = 149\ ^0

Therefore, the largest angle of the field is 149⁰.

       

8 0
3 years ago
Help me please but PLEASE NO LINKSSSSS
Varvara68 [4.7K]

Answer:

C

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
What is dislocation​
Sati [7]

Answer:

The distance between the starting point and the end point

Step-by-step explanation:

6 0
2 years ago
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