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3 years ago

4 + 4.75x = 3 + 5.55x

Mathematics

2 answers:

saw5 [17]3 years ago

6 0

Step-by-step explanation:

4+4.75x=3+5.55x

4-4+4.75x=3-4+5.55x

0+4.75x-5.55x = -1+ 5.55x-5.55x

-0.8x = -1

-0.8x/-0.8= -1/-0.8

x = 1.25

If its helpful ❤❤❤

THANK YOU.

Oxana [17]3 years ago

4 0

X= 1.25. I hope this helps you

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Carol is going to make a wooden pyramid and then paint it. She drew the net of a square pyramid as shown below to help her plan

rodikova [14]

The given pyramid's total surface area is 3. 24.0 square feet.

Step-by-step explanation:

Step 1:

To calculate the surface area of the given figure, we need to find the surface areas of the different shapes in the figure.

There are 3 triangles and 1 square in the figure.

Step 2:

All the triangles are similar.

The surface area of a triangle = $\frac{1}{2} (baselength)(height).$

The similar triangles have a base length of 3 feet and a height of 2.5 feet.

The surface area of 1 similar triangle = $\frac{1}{2} (3)(2.5)= 3.75$ square feet.

The surface area for all the similar triangles = $3.75 (4) = 15$ square feet.

Step 3:

The surface area of a square is the square of its side length. The square has a side length of 3 feet.

The surface area of the square = $a^{2} = 3^{2} =9$ square feet.

Step 4:

To calculate the total surface area we sum up all the individual surface area.

The total surface area = $15 + 9 = 24$ square feet which is the third option.

3 0

2 years ago

How many solutions does 9(z+8)=-9z-72 have

zloy xaker [14]

Answer:

1 solution.

General Formulas and Concepts:

Pre-Algebra

Equality Properties

Step-by-step explanation:

Step 1: Define equation

9(z + 8) = -9z - 72

Step 2: Solve for x

Distribute 9: 9x + 72 = -9z - 72
Add 9z to both sides: 18z + 72 = -72
Subtract 72 on both sides: 18z = -144
Divide 18 on both sides: z = -8

Here we see that we will get only 1 solution for z.

4 0

2 years ago

Can you help me out

irga5000 [103]

The correct answer is the letter B)

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2 years ago

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nydimaria [60]

X(2+x)(2-x) I think that’s correct

3 0

2 years ago

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How do i solve this problem

mamaluj [8]

As they are similar corresponding sides are in the same ratio, so

18/15 = x / 4

x = 4*18 / 15
x = 4.8 answer

7 0

2 years ago