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sweet [91]
3 years ago
14

What is the value of the expression 12.25 + (-17.75)?

Mathematics
1 answer:
Reika [66]3 years ago
7 0

Answer:

-5.5

Step-by-step explanation:

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PLEASE HELP!
rodikova [14]

Answer:

100,000 days

Step-by-step explanation:

1,000,000 / 10 = 100,000 days.

5 0
3 years ago
Surface Area of Pyramids
iren [92.7K]

9514 1404 393

Answer:

  288 km²

Step-by-step explanation:

The surface area is the sum of the area of the square base and the area of the four triangular faces.

  SA = (10 km)² + 4(1/2)(10 km)(9.4 km) = 288 km²

____

The area formulas for a square and a triangle are ...

  A = s² . . . . area of a square of edge length s

  A = 1/2bh . . . . area of a triangle with base b and height h

4 0
3 years ago
Use mental math to find the sum. <br> 80+40+170
MissTica

Answer:

290

Step-by-step explanation:

80+40=120

120+170=290

290

6 0
3 years ago
Read 2 more answers
Part B
stiv31 [10]

Answer:

have a great weekend too much work did it to you and your kids in a few months or more and w this much work did I do this for a long

6 0
2 years ago
A line has this equation: y=-3x+7
Vadim26 [7]

Given:

The equation of line is y=-3x+7.

A line is parallel to given equation and passes through the point (-4,-8).

To find:

The equation of parallel line.

Solution:

The equation of a line is

y=-3x+7

On comparing this equation with y=mx+b, we get

m=-3

So, slope of given line is -3.

We know that, slopes of parallel lines are equal. It means, the slope of the parallel line is also -3.

The parallel line passes through (-4,-8) and having slope -3. So, the equation of line is

y-y_1=m(x-x_1)

y-(-8)=(-3)(x-(-4))

y+8=(-3)(x+4)

y+8=-3x-12

y=-3x-12-8

y=-3x-20

Therefore, the equation of parallel line is y=-3x-20.

5 0
3 years ago
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