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netineya [11]
2 years ago
7

A number exceeds its four-sevenths by 18. Find the number.

Mathematics
1 answer:
Andru [333]2 years ago
5 0

Answer:

42

Step-by-step explanation:

let the number be x

4/7 of x

(4/7) × x

4x/7

As stated in the question:

x=4x/7+18

=x-4x/7=18

=(7x-4x)/7=18

=3x/7=18

3x= 18×17

3x= 126

x=126/3

x=42

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A garden is in the shape of a square with a perimeter of
ElenaW [278]

The perimeter of a square is the sum of its sides and they are all equal, so to obtain the length of each of them we divide the perimeter of the first fence between 4:

 P1= 64 feet/4 sides

 P1= 16 feet

 Then, the length of each side of the second fence will increase 2 feet at each end, as shown in the figure. We have then that the perimeter of the second fence is:

 P2 = 20 feet x 4 sides

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 The sum of the perimeters of both fences is:

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6 0
3 years ago
8p-5(p+3)=(7p-1)3<br> Please I really need help on this
4vir4ik [10]
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8 0
3 years ago
Read 2 more answers
Cross products question, 3/5 over x multiplied by 12 over 20<br> what is x
Nitella [24]

Answer:

9/25x

Step-by-step explanation:

3/5/x ×12/20

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36/100x

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The exact value of x cannot be determined because we don't know what the equation is equated to

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7 0
3 years ago
Name the property used to make the conclusion. If x+ 3 = 17, then x = 14 -
zimovet [89]

Answer:

Subtraction property of inequality

Step-by-step explanation:

Step 1: Definition of Subtraction property

Subtraction property of equality refers to balancing an equation by using the same mathematical operation (minus) on both sides.

Step 2: Relate the definition above with the given question.

It can be seen from the statements in the question that 3 was subtracted from both sides of the initial equation to get:

x + 3 = 17 \\ x + 3 - 3 = 17 - 3 \\  x = 14

6 0
2 years ago
I need to know the answer
Nesterboy [21]

Answer in the attachment.

3 0
3 years ago
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