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2 years ago

Which expression correctly represents ""twice the sum of four and a number""? 2 (4 n) 2 (4 n) 2 (4) n 2 (4 n).

Mathematics

1 answer:

dybincka [34]2 years ago

7 0

The expression is twice the sum of four and a number is 2(4 + n). Then the correct option is A.

<h3>What is simplification?</h3>

Simplification is to make something easier to do or understand and to make something less complicated.

The condition is given as "twice the sum of four and a number".

Let the number be n. Then according to the condition, we have

The sum of four and a number (n) will be

4 + n

And the number is twice. Then the expression will be

2 × (4 + n)

Thus, the expression is 2 × (4 + n). Then the correct option is A.

More about the simplification link is given below.

brainly.com/question/12616840

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For each pair of similar figures, find the ratio of the area of the first figure to the area of the second.

Hitman42 [59]

answer:

$\frac{4}{9}$

explanation:

the area of the larger square is 36 (6*6), and the area of the smaller square is 16 (4*4). to find the ratio of the area, simply just put 16 over 36 and simplify.

$\frac{16}{36} = \frac{4}{9}$

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3 years ago

Which set of ordered pairs represents a function? {(0, 1), (1, 3), (1, 5), (2, 8)} {(0, 0), (1, 2), (2, 6), (2, 8)} {(0, 0), (0,

11111nata11111 [884]

Answer: {(0, 2), (1, 4), (2, 6), (3, 6)}

Step-by-step explanation:

For a relation to be considered a function, each x-value needs to have one corresponding y-value--it cannot have more than 1.

Since all the other sets of ordered pairs feature points with two x-values with different y-values, the set above is the only function of the provided options.

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3 years ago

The sum of a number and twice its reciprocal is 3. What are the numbers?

qwelly [4]

Let no be x

Acc to ques

X + 2(1/x) = 3

X + 2/x = 3

X^2 + 2 = 3x

X^2 - 3x + 2 = 0

X^2 - x - 2x + 2 = 0

X (x-1) - 2 (x-1) = 0

(x-2) (x-1) = 0

X= 2 or x =1

If this answer was helpful then please mark it as the brianliest

3 0

3 years ago

The time t required to drive a certain distance varies inversely with the speed r. If it takes 2 hours to drive the distance at

Ahat [919]

Distance = r x t ===> t=d/r

Distance (after 2 hours driving @30mil/hr) = 2 x 30 = 60 Mil

To drive same distance (60) with r = 50, the time needed is 60/50 =1.2 hrs

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3 years ago

6X - 2 + 5x + 7 *<br> what’s the answer?

enot [183]

Answer:

x=2.2

Step-by-step explanation:

6X - 2 + 5x + 7

add like terms

11x+5

divide 5 on both sides

x=2.2

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-mercury

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3 years ago

Read 2 more answers