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77julia77 [94]
3 years ago
7

2(x+4) - (y•8) when x=1/8 and y=3/16 A 11/4 B 65/2 C 21/4 D 27/5

Mathematics
1 answer:
zvonat [6]3 years ago
5 0
The answer is 27/5 so it’s c
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Rods mother is 3 years more than 4 times as old as Rod . Their combined age is 33 . How old is Rod
marshall27 [118]
3 + 4x = 33
-3 on both sides
4x = 30
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x = 7.5

Answer:
Rod is 7 1/2 years old
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Answer:

1.0 g element will be remaining after 19 minutes

Step-by-step explanation:

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Which answer is correct!!???!?
bearhunter [10]
Your answer is c hope i helped
3 0
3 years ago
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John had a roll containing 24 2/3 feet of wrapping paper. He wants to divide it into 11 pieces. First, though, he must cut off 5
tatyana61 [14]

Given

John had a roll containing of wrapping paper  

=24\tfrac{2}{3}

First, he must cut off 5/6 foot because it was torn.

He wants to divide it into 11 pieces.

To proof

As given in question

John had a roll containing of wrapping paper

=24\tfrac{2}{3}

=\frac{74}{3}    ( solving the mixed fraction form)

 First, though, he must cut off 5/6 foot

than we get

= \frac{74}{3} - \frac{5}{6}

Taking the L.C.M of 3 and 6 is 6

=\frac{148-5}{6}

=\frac{143}{6}

=23.83 feet (approx)

He wants to divide it into 11 piece

length of the each piece

=\frac{23.83}{11}

length of the each pieces be 2.16 feet ( approx)

Hence proved




6 0
3 years ago
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 PLEASE HELP 15 points for brainliest! What is the solution of n^2-49=0
creativ13 [48]

Answer:  The correct option are (1). c, (2). d and (3). (b).

Step-by-step explanation:  The calculations are as follows:

(1) We are to find the solution of the following quadratic equation:

n^2-49=0.

We have

n^2-49=0\\\\\Rightarrow n^2=49\\\\\Rightarrow n=\pm7~~~~~\textup{[taking square roots on both sides]}

Thus, the correct option is (c). \pm7.

(2) We are to find the solution of the following quadratic equation:

x^2+64=0.

We have

x^2+64=0\\\\\Rightarrow x^2=-64.

Since there is no real number whose square is negative, so this equation has no solution.

Thus, the correct option is (d). no solution.

(3) We are given to find the side length of a square with an area of 144x².

Let, 'a' denotes the side length of the square.

Then,

a^2=144x^2\\\\\Rightarrow a=\pm12x.~~~~~~~\textup{[taking square root on both sides]}

Since the length of the side cannot be negative, so the side length is 12x.

Thus, (b) is the correct option.

The correct option are (1). c, (2). d and (3). (b).

6 0
3 years ago
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