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Anna35 [415]
2 years ago
15

PLEASE HELPPPP ASAP IF YOU THIS

Mathematics
1 answer:
k0ka [10]2 years ago
3 0
I think 90 degrees I’m not sure
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Graph h(t)=-2(t+5)^2+3, find h(-8)
NARA [144]

Answer:

h(-8)=-15

Step-by-step explanation:

Substitute t=-8

h(-8) =-2(-8+5)^2+3

       =-2(-3)^2+3

       =-2(9)+3

       =-18+3

       =-15

8 0
3 years ago
Read 2 more answers
A collection of nickels and dimes is worth $9.45. If the number of dimes is doubled, the value is
eduard

Answer:

The number of nickels is 45 and the number of dimes is 72.

Step-by-step explanation:

Let

x ----> number of nickels

y ----> number of dimes

Remember that

1\ nickel=\$0.05

1\ dime=\$0.10

so

0.05x+0.10y=9.45 ------> equation A

0.05x+0.10(2y)=16.65

0.05x+0.20y=16.65 ------> equation B

<em>Solve the system by substitution</em>

we have

0.05x+0.10y=9.45 ------> equation A

0.05x+0.20y=16.65 ------> equation B

Multiply both equations by 100 both sides

5x+10y=945 ---->5x=945-10y --> equation C

5x+20y=1,665 ----> equation D

substitute equation C in equation D

(945-10y)+20y=1,665

solve for y

945+10y=1,665

10y=1,665-945

10y=720

y=72\ dimes

Find the value of x

5x=945-10y

5x=945-10(72)

5x=225

x=45\ nickels

<em>Alternative Method</em>

Solve the system by graphing

Remember that the solution is the intersection point both graphs

using a graphing tool

the solution is the point (45,72)

therefore

The number of nickels is 45 and the number of dimes is 72.

7 0
3 years ago
Maria deposited her pay check of $301.86 into her savings account that already had $123.16. She then withdrew $60.00 for her wee
stich3 [128]
Her new balance is -$8.42
8 0
3 years ago
Read 2 more answers
Select all complex numbers<br> 5-√9/4<br> 1+√-3<br> 4-3√-16<br> 2-√12➗5<br> 3+2√-9➗7<br> 9√-7/5
harina [27]

Answer:

5-√9/4    4-3√-16    3+2√-9➗7

Step-by-step explanation:


5 0
3 years ago
Solve: -2/3a - 6 = 12 <br>a =​
Anika [276]

Answer: -27 is the correct answer. (apparently)

7 0
3 years ago
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