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igomit [66]
3 years ago
15

H(t)=4t+20, h( )=4 please help me

Mathematics
2 answers:
____ [38]3 years ago
5 0
What t value will yield 4?

H(t) = 4t + 20

How about -4?

H(-4) = 4(-4) + 20

H(-4) = -16 + 20

H(-4) = 4

Yes, t = -4

Done.
klasskru [66]3 years ago
5 0
H(x)=4x+20=4
4x=4-20
x= -16/4
x= -4
then h(-4)=4
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What is the additive inverse of -2 + 8i?
tatuchka [14]

Answer:

2 - 8i

Step-by-step explanation:

The additive inverse of something is basically the opposite of it. Another way to say this is that when you add the additive inverse to -2 + 8i, it will equal 0.

<u>An example:</u>

The additive inverse of 7 is -7 because not only is it the opposite, but also when you add 7 and -7, it equals 0.

<u>To solve</u>

So all you need to do is find the opposite of -2 + 8i. You can write it as:

-(-2 + 8i)  With the negative in the front because we want to find the opposite.

This then equals:

2 - 8i

You can check your answer by adding -2 + 8i and 2 - 8i to see if it equals 0:

(-2 + 8i) + (2 - 8i)  →  and it does equal 0

<u>ANSWER:</u> 2 - 8i

Hope you understand and that this helps with your question! :)

8 0
3 years ago
Find the mean and median of this list: 21, 18, 24, 19, 18, 18, 18, 19, 21, 24.
Lena [83]

Answer: mean-20 and median-(19+19)/2 = 19

Step-by-step explanation:

8 0
3 years ago
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Factor the expression 20k + 50
Yuliya22 [10]
Answer is 10(2k+5)

-----------------------------------

Work Shown:

20k+50 = 10*2k + 10*5
20k+50 = 10(2k+5)

Note how we can distribute the 10 back in to check our work
10(2k+5) = 10(2k)+10(5) = 20k+50
so that confirms we have the right answer

Another thing to notice is that 10 is the largest factor that we can pull out of 20k and 50. The value 10 is the GCF (greatest common factor) of 20 and 50.
4 0
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The equation y = 5.5x represents a proportional relationship What is the constant of proportionality?
Vadim26 [7]

The constant of proportionality is 5.5

Step-by-step explanation:

y = kx

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y = <u>5.5</u>x

4 0
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Masteriza [31]
Given the question:
The manager of a baseball team has 15 players to choose from for his 9-person batting order. How many different ways can he arrange the players in the lineup?
5,005    362,880    3,603,600    1,816,214,400

The number of was in which a smaller group is choosing from a bigger group is given by the bigger number combination the smaller number.
^nC_r= \frac{n!}{(n-r)!r!}
Here, we want to choose a 9-person batting order from a team of 15 players. This is given by:
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6 0
3 years ago
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