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melamori03 [73]

2 years ago

8

ANOTHER DIFFICULT ONE!...for me..

1 answer:

Anna007 [38]2 years ago

7 0

The answer to the question above is simple.

In that case, you should just think any number that when you multiply it to each other, it must result must be -100. And when you add it to each other it will be "0" zero.
So the answer to your question is 10. But when when you multiply it to each other, it must result to -100.. so the other one must be a positive 10 (x + 10) and the other one is (x - 10).

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Solve by elimination

DiKsa [7]

2x-y=-8
+
y=2
2x=-6
x=-3
2*-3-y=-8
-6-y=-8
-y=-2

x=-3 and y=2

7 0

3 years ago

Use the figure below to answer the questions.

Archy [21]

Answer:

a. What is the name of the 3D shape?

The name of the 3D shape is Prism

b. What is the formula for total surface area for this shape?

Total surface area:

$S=2A_{b}+P_{b}h$

c. What is the surface area of the figure?

The surface area of the figure is 144 cm²

Step-by-step explanation:

a. What is the name of the 3D shape?

The 3D shape has two congruent and parallel faces (triangles) and the other faces are parallelograms, then the 3D shape is a prism

b. What is the formula for total surface area for this shape?

Total Surface area:

$S=2A_{b}+P_{b}h$

where:

Area of the base of the prism: Ab

Perimeter of the base: Pb

Height of the prism: h

c. What is the surface area of the figure?

The base of the prism is a triangle. Then to calculate the area of the base, we must use the formula to calculate the area of a triangle:

$A_{b}=\frac{bh}{2}\\ A_{b}=\frac{(4 cm)(3 cm)}{2}\\ A_{b}=\frac{12cm^{2} }{2}\\ A_{b}=6cm^{2}$

The perimeter of the base is the perimeter of the triangle, equal to the sum of the sides of the triangle:

$P_{b}=4cm+3cm+5cm\\ P_{b}=12cm$

h: Height of the prism is the distance between the bases of the prism (the triangle), then h=11 cm

Then, replacing in the formula the known values:

$S=2(6 cm^{2})+(12 cm)(11 cm)\\ S=12 cm^{2}+132 cm^{2}\\ S=144 cm^{2}$

8 0

3 years ago

-9 equals V over four

gogolik [260]

Answer:

-9=v/4

cross multiply

-9×4=v

-36=v

v=-36

7 0

3 years ago

Read 2 more answers

Write the slope intercept form Through:(-1,0) and (-5,-5)

jarptica [38.1K]

Answer:

$y=\frac{5}{4} x + \frac{5}{4}$

7 0

2 years ago

Which of the following situations represents a proportional

Mamont248 [21]

The answer is that be C.

4 0

3 years ago