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2 years ago

What is the sum of 8 and 7 doubled in a numerical expression

Mathematics

1 answer:

DiKsa [7]2 years ago

8 0

Answer:

2(8+7)

Step-by-step explanation:

sum is addition so add 8+7 then its doubled so u put parenthesis and double by 2

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If 4/7 = 12 /? , then ? = a) 7 b) 14 c) 21 d) 28

posledela

Answer:

Step-by-step explanation:

Multiply by 3 and find out.

8 0

2 years ago

-11=61-6q what is q solve the equation

aleksley [76]

Answer:

q=12

Step-by-step explanation:

-11=61-6q

-11-61 =-6q

-72=-6q

q=72/6

q=12

8 0

3 years ago

Three fifths of a number, plus 8, is equal to the number.What is the number?

Luden [163]

Answer:

The number is 20.

Step-by-step explanation:

To solve this, first take the words and turn into an equation.

3/5x + 8 = x

Now we can solve for x using the order of operations

3/5x + 8 = x

8 = 2/5x

20 = x

7 0

2 years ago

Y=2x-5 -3x - 4y=-2

Whitepunk [10]

Answer:

y=-x/5 =3/5. that is how it is.

8 0

2 years ago

Please help with #12 im confused that is the key but i dont get it

Svetllana [295]

Given Equation

$\boxed{ \tt \: (8 \sqrt{3} - 2 \sqrt{2} )(8 \sqrt{3} + 2 \sqrt{2})}$

Step by step expansion:

$\dashrightarrow \sf \: (8 \sqrt{3} - 2 \sqrt{2} )(8 \sqrt{3} + 2 \sqrt{2})$

$\\ \\$

$\dashrightarrow \sf \: (8 \sqrt{3})^{2} - (2 \sqrt{2} {)}^{2}$

Reason:

(a + b)(a - b) = a²- b²

$\\ \\$

$\dashrightarrow \sf \: (8 {}^{2} \times { \sqrt{3} }^{2} )- (2 \sqrt{2} {)}^{2}$

$\\ \\$

$\dashrightarrow \sf \: (64 \times 3 ) - (2 \sqrt{2} {)}^{2}$

$\\ \\$

$\dashrightarrow \sf \: (64 \times 3 ) - (2 {}^{2} \times \sqrt{2} {}^{2} {)}$

$\\ \\$

$\dashrightarrow \sf \: 192- 8$

$\\ \\$

$\dashrightarrow \sf \: 184$

$\\ \\$

~BrainlyVIP ♡

4 0

2 years ago

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