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1 year ago

What is the solution to the equation? 4√x-4 =3 A. -8 B. 16 C. 85 D. no solution

Mathematics

2 answers:

zhannawk [14.2K]1 year ago

6 0

Answer:

Step-by-step explanation:

4√(x-4) = 3

√(x-4) = 3/4

Square both sides:

x - 4 = 9/16

x = 4 + 9/16

x = 4 9/16.

kodGreya [7K]1 year ago

4 0

${\qquad\qquad\huge\underline{{\sf Answer}}}$

Here we go ~

$\qquad \sf \dashrightarrow \: \sqrt[4]{x - 4} = 3$

$\qquad \sf \dashrightarrow \: x - 4 = (3) {}^{4}$

$\qquad \sf \dashrightarrow \: x - 4 = 81$

$\qquad \sf \dashrightarrow \: x = 81 + 4$

$\qquad \sf \dashrightarrow \: x = 85$

So, the correct choice is 85

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A rectangle is 6 inches longer than it is wide. The perimeter of the rectangle is 44 inches.Write and solve an equation for the

Nataly_w [17]

Answer:

Length is 14 in

Width is 8 in

Step-by-step explanation:

Given:

Length = l
Width = w
Perimeter = P = 44 in

<h3>Solution</h3>

Equations as per given:

l - w = 6
P= 2(l+w) = 44 ⇒ l +w = 22

Adding up the two equations:

l - w + l +w = 6 + 22
2l = 28
l = 28/2
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Then finding the value of w:

w = l -6
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w = 8 in

Answer: The length of the rectangle is 14 inches and width is 8 inches

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2 years ago

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Answer:

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Step-by-step explanation:

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5 0

3 years ago

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ANEK [815]

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Like this :

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2 years ago

Mei Su had 80 coins. She gave most of them to her friends in such a way that each of her friends got at least one coin and no tw

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Answer: 12 friends.

Step-by-step explanation:

the data we have is:

Mei Su had 80 coins.

She gave the coins to her friends, in such a way that every friend got a different number of coins, then we have that:

The maximum number of friends that could have coins is when:

friend 1 got 1 coin

friend 2 got 2 coins

friend 3 got 3 coins

friend N got N coins

in such a way that:

(1 + 2 + 3 + ... + N) ≥ 79

I use 79 because "she gave most of the coins", not all.

We want to find the maximum possible N.

Then let's calculate:

1 + 2 + 3 + 4 + 5 = 15

15 + 6 + 7 + 8 + 9 + 10 = 55

now we are close, lets add by one number:

55 + 11 = 66

66 + 12 = 78

now, we can not add more because we will have a number larger than 80.

Then we have N = 12

This means that the maximum number of friends is 12.

5 0

3 years ago

Use the formula d = ( r − c ) t to find c if d = 6 , r = 4 , and t = 2 . c=

Minchanka [31]

First, we are going to want to plug in the values we are given. In this case, we will end up with the equation:

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From here, we can solve the equation to find $c$ :

$6 = 2(4 - c)$

Apply the commutative property to rearrange the terms on the right-side of the equation to make the distributive property more apparent

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Apply the distributive property

$-2 = -2c$

Subtract 8 from both sides of the equation

$1 = c$

Divide both sides of the equation by -2

We have found that c = 1.

7 0

3 years ago