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Maru [420]
3 years ago
13

3 x (4 + 7) - * 4) + (7)

Mathematics
1 answer:
Zarrin [17]3 years ago
4 0

Answer:

22 assuming the * was a mistake im not sure if u meant the * if u did mean in what does it mean

Step-by-step explanation:

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What is the value of x if 5x + 45 = 35? <br> Select one:<br><br> 10<br><br> -2<br><br> -10<br><br> 2
andrew-mc [135]

Answer:

x= -2

Step-by-step explanation:

Simplifying 5x + 45 = 35 Reorder the terms: 45 + 5x = 35 Solving 45 + 5x = 35 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-45' to each side of the equation. 45 + -45 + 5x = 35 + -45 Combine like terms: 45 + -45 = 0 0 + 5x = 35 + -45 5x = 35 + -45 Combine like terms: 35 + -45 = -10 5x = -10 Divide each side by '5'. x = -2 Simplifying x = -2

4 0
3 years ago
The volume of a cube is 512 cm3 . What is the area, in square centimetres, of each side of the cube?
lesantik [10]

Answer:

Step-by-step explanation:

V of a cube is s^3

V = 512

s = cube root of (V)

s = cube root of 512 cm^3

s = 8

The area of one face of the cube is s^2

s = 8

Area 1 face = 8^2

Area of 1 face = 64 cm^2

4 0
2 years ago
Wayne is hanging a string of lights 78 feet long around the three sides of his piano, which is adjacent to his house. The length
Sauron [17]

Answer:

The width is 18 feet and the length is 42 feet

Step-by-step explanation:

Let x feet be the width of the patio. The length of the patio is 6 feet longer than twice it’s width, then the length of the patio is 2x+6 feet.

Wayne is hanging a string of lights 78 feet long around the three sides of his patio, which is adjacent to his house. The side with length 2x+6 feet is adjacent to the house, so Wayne is hanging a string along three sides with lengths x ft, x ft and 2x+6 ft.

Hence,

x+x+2x+6=78\\ \\4x=78-6\\ \\4x=72\\ \\x=18\ ft

The width = 18 ft

The length =2\cdot 18+6=36+6=42 ft

7 0
3 years ago
I need help with this question please
ohaa [14]

Answer:

1) 0+2/2 = 1, 2+(-2)/2 = 2-2/2 = 0 so... midpoint is 1,0

2) 5+1/2 = 3, 6+(-2)/2 = 6-2/2 = 2 so... midpoint is 3,2

The line is slanting ( starting of line is downwards going to the left bottom and the top of the line is facing upwards going to the top right )

HOPE THIS HELPS!!

4 0
3 years ago
What is the best approximation for the circumference of a circle with a radius of 125 m?
miskamm [114]
Forumla for circumference is
pi x diameter
or
 pi x 2 x radius
so we are going to use the second formula to estimate the answer without a calculator.
3 x 2 x 125
3 x 2 =6
6 x 125 = 750.
the closest answer is 785m. That is the answer.
5 0
4 years ago
Read 2 more answers
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