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Sonbull [250]
3 years ago
9

Select the correct answer

Mathematics
2 answers:
Agata [3.3K]3 years ago
7 0

Answer:

f(-7)=12

Step-by-step explanation:

f(-7)= 5-(-7)

f(-7)=5+7

f(-7)=12

vagabundo [1.1K]3 years ago
4 0
It’s 12. ( I had that problem on a test)
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Helen determined she walks about 1,800 steps per 4/5 mile. How many steps did she take if she walked 3 miles?
olga_2 [115]
1,800\ steps\ \ \rightarrow\ \  \frac{4}{5} \ mile\\ x\ \ \rightarrow\ \ 3\ miles\\ \\\frac{4}{5} \cdot x=1,800\cdot 3\ /\cdot\frac{5}{4} \\ \\x=1,800\cdot\frac{5}{4}\cdot3 \\ \\x=450\cdot15\\ \\x=6750\ [steps]
3 0
3 years ago
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Shirley is going to have her home painted. Tim"s painting charges $250 plus $14 per hour. Colorful paints charges $22 per hour.
Advocard [28]

It would take greater than 31.25 hours for Tim's price to be better. So in terms of whole hours it would take at least 32 hours of work for Tim's price to be better.

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3 years ago
What is the product of two integers that equal -21
earnstyle [38]

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8 0
3 years ago
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Point B has coordinates ​(​1,2​). The​ x-coordinate of point A is -8. The distance between point A and point B is 15 units. What
Xelga [282]

Answer:

The possible coordinates of point A are A_{1} (x,y) = (-8, 14) and A_{2} (x,y) = (-8, -10), respectively.

Step-by-step explanation:

From Analytical Geometry, we have the Equation of the Distance of a Line Segment between two points:

l_{AB} = \sqrt{(x_{B}-x_{A})^{2} + (y_{B}-y_{A})^{2}} (1)

Where:

l_{AB} - Length of the line segment AB.

x_{A}, x_{B} - x-coordinates of points A and B.

y_{A}, y_{B} - y-coordinates of points A and B.

If we know that l_{AB} = 15, x_{A} = -8, x_{B} = 1 and y_{B} = 2, then the possible coordinates of point A is:

\sqrt{(1+8)^{2}+(2-y_{A})^{2}} = 15

81 + (2-y_{A})^{2} = 225

(2-y_{A})^{2} = 144

2-y_{A} = \pm 12

There are two possible solutions:

1) 2-y_{A} = -12

y_{A} = 14

2) 2 - y_{A} = 12

y_{A} = -10

The possible coordinates of point A are A_{1} (x,y) = (-8, 14) and A_{2} (x,y) = (-8, -10), respectively.

8 0
3 years ago
Hi if u have the answer help a kid out.. online math is so hard for what
Simora [160]

Answer:

c

Step-by-step explanation:

since his salary is increasing by 12% you take 12% of his current salary and add that to his current salary. hope this helped ya out kid :)

6 0
3 years ago
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