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3 years ago

Given h(x) = x^2 - 2, what is the value of h(-3)

Mathematics

2 answers:

zlopas [31]3 years ago

7 0

Answer:

-11

Step-by-step explanation:

plug -3 in x values.

h(-3) = -3^2 -2

=-11

antoniya [11.8K]3 years ago

6 0

Answer: h(-3) = 7

Explanation: If h(x) = x² - 2, then h(-3) = (-3)² - 2

which simplifies to 9 - 2 or 7.

Remember to always use parenthses when

substituting your given value in for x.

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Is the point (2,14) a solution of the equation y = 5x - 3?

tresset_1 [31]

Answer: No it is not

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3 years ago

Please find the surface area of each figure to the nearest tenth? Please show the work too...

MrRa [10]

The first one is 31.875 and the second is 12 I don't know how to explain to get it. Sorry

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3 years ago

It was recently estimated that females outnumber males by about three or two. If there are 1770 people in a county, how many of

max2010maxim [7]

GIVEN

1) Females outnumber males by 3 to 2.

2) There are 1770 people in the city.

SOLUTION

Let the number of males be x and the number of females y. Therefore, the total number of people can be written to be:

$x+y=1770\text{ -----------(1)}$

If there are 3 females for every 2 males, we have that:

$\begin{gathered} \frac{y}{3}=\frac{x}{2} \\ \therefore \\ x=\frac{2y}{3}\text{ ----------(2)} \end{gathered}$

We can substitute equation (2) into equation (1) and solve for y:

$\begin{gathered} \frac{2}{3}y+y=1770 \\ \frac{2y+3y}{3}=1770 \\ 5y=1770\times3 \\ 5y=5310 \end{gathered}$

Dividing both sides by 5, we have

$y=1062$

There are 1062 females in the county.

3 0

1 year ago

Find the 15th term of the arithmetic sequence 13,8,3,-2

Lunna [17]

Answer:

-57

Step-by-step explanation:

13,8,3,-2 (decreasing by 5)

13,8,3,-2,-7,-12,-17,-22,-27,-32,-37,-42,-47,-52,-57.

The 15th term is -57.

Ace

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3 years ago

5/10+13/100 what is the value of the expression

cluponka [151]

Answer:

63/100

Step-by-step explanation:

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3 years ago