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PolarNik [594]
3 years ago
12

I cannot solve the equation. √(7d+1)-4=11

Mathematics
2 answers:
emmainna [20.7K]3 years ago
8 0

Answer:

I believe the answer is  d = 32

Step-by-step explanation:

You should isolate the radical, then raise each side of the equation to the power of its index.

Inga [223]3 years ago
7 0

9514 1404 393

Answer:

  d = 32

Step-by-step explanation:

Add 4, then square, and solve the resulting linear equation.

  √(7d +1) = 15

  7d +1 = 225 . . . . . . square both sides

  7d = 224 . . . . . . . . subtract 1

  d = 32 . . . . . . . . . . divide by 7

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A perfect cube<span> is a whole number which is the </span>cube<span> of another whole number. </span>In order to check whether a number is a perfect cube or not, we find its prime factors and group together triplets of the prime factors. If no<span> factor is left out then the number is a perfect cube.</span>
7 0
4 years ago
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A rectangular sheet of metal has a perimeter of 82 inches. Its area is 348 square inches. What are the dimensions of the sheet?
Georgia [21]

The area of a 2D form is the amount of space within its perimeter. The length of the rectangle is 29 inches and the width of the rectangle is 12 inches.

<h3>What is an area?</h3>

The area of a 2D form is the amount of space within its perimeter. It is measured in square units such as cm², m², and so on. To find the area of a square formula or another quadrilateral, multiply its length by its width.

Let the width of the sheet be represented by x and the length be represented by y.

Area = x × y

348 = xy

x = 348/y

Perimeter = 2(x+y)

82 = 2(x+y)

41 = x + y

41 = (348/y) + y

0 = y² - 41y + 348

y = 29, 12

Therefore, the length of the rectangle is 29 inches and the width of the rectangle is 12 inches.

Learn more about the Area:

brainly.com/question/1631786

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7 0
2 years ago
Adam’s bank account has a balance of $1213.69 before he starts spending money. He makes the following transactions:
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Answer: B. Yes, but doing so will clear out his account.

Step-by-step explanation:

I just took a test and answered it correct.

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in a class of 30 students on average 6 will be left-handed if a class includes 27 Lefty's estimate how many students are in the
AfilCa [17]
6/30 = 1/5

This means that 1/5 of the students in a class will be left-handed.
27*5 = 135
27/135 = 1/5

The correct answer is 135 students.
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3 years ago
The value of a professional basketball player's autograph rose 30% in the last year. It is now worth $286.00. What was it worth
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X+0.30x=286
Solve for x
X=220
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4 years ago
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