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denis-greek [22]
3 years ago
6

Given the functions below if h(x)=-1, find x h(x)=-7x+20 Find x

Mathematics
1 answer:
Sliva [168]3 years ago
6 0

Answer:

h(-1) = 27

Step-by-step explanation:

h(-1) = -7(-1) + 20

= 7 + 20

h(-1) = 27

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The population of a certain type of seahorse grew by 13% from year to year.
Gekata [30.6K]

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Step-by-step explanation:

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3 years ago
A source of laser light sends rays AB and AC toward two opposite walls of a hall. The light rays strike the walls at points B an
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Answer: 70  meters.

Step-by-step explanation:

Observe the figure attached.

The distance between the walls is:

DE=AD+AE

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Both triangles are right triangles. Therefore, you can calculate the distance  between the walls as following:

- Calculate the distance AD:

cos\alpha=\frac{adjacent}{hypotenuse}\\\\cos(60\°)=\frac{AD}{60}\\AD=30m

- Calculate the distance AE:

tan\beta =\frac{opposite}{adjacent}\\\\tan(45\°)=\frac{40}{AE}\\\\AE=\frac{40}{tan(45\°)}\\\\AE=40m

Therefore the distance between the walls is:

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6 0
3 years ago
Read 2 more answers
11. Which matrix represents the system of equations below?
dimulka [17.4K]

Answer:

\left[\begin{array}{cccc}-12&-13&13&|15\\7&-10&-3&|11\\7&14&5&\:\:\:|-5\end{array}\right]

Step-by-step explanation:

The system of equations is;

-12x-13y +13z =15

7x-10y-3z = 11

7x+14y +5z = -5

The coefficient matrix is \left[\begin{array}{ccc}-12&-13&13\\7&-10&-3\\7&14&5\end{array}\right]

The constant matrix is \left[\begin{array}{c}15\\11\\-5\end{array}\right]

The augmented matrix is \left[\begin{array}{cccc}-12&-13&13&|15\\7&-10&-3&|11\\7&14&5&\:\:\:|-5\end{array}\right]

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4 years ago
Please I need 1,2, and 4
Virty [35]

Answer:what grade are you in?

Step-by-step explanation:

7 0
3 years ago
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