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2 years ago

Which of the expressions are equivalent to the one below? 5x(3+7)

Mathematics

2 answers:

makkiz [27]2 years ago

8 0

Answer:

B, C

Step-by-step explanation:

3 times (2+6) + 4 times 5

3 times 8 + 20

24 + 20

B. This is the same equation but rewritten

C. This is the same equation but rewritten

MArishka [77]2 years ago

6 0

3×(2+6)+4×5 is/= 44,

3×2+3×6+4×5=44

5×4+3×(6+2)=44

(6+2)×3+4×5=44

3×2+(6+4)×5= 56

So your answers are A, B, and C.

Step-by-step explanation:

..Calculator

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Answer:

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Step-by-step explanation:

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3 years ago

Simplify (4-3i)+(2+6i)

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Answer:

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Step-by-step explanation:

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2 years ago

60+6=48<br> What is the value of b?

mina [271]

Answer:

-2

Step-by-step explanation:

Assuming you mean 60 + 6b = 48

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3 years ago

Write the equation of a horizontal line that passes through the point (–2, 2).

Aneli [31]

Answer:

option C

y = 2

Step-by-step explanation:

Given in the question,

a co-ordinate = (-2,2)

x = -2

y = 2

Equation of the straight line

y = mx + c

<em>here m = gradient of the line</em>

<em> c = y - intercept</em>

<em />

<h3>we know that gradient of the horizontal line = 0</h3>

plug value in the equation above

y = (0)x + 2

y = 2

7 0

3 years ago

Hi! Can anybody help me with these problems? I have to do 2 step equations.

Dovator [93]

1) 3.8x + 5.2x - 6.7 = 11.3
9x = 11.3 + 6.7
9x = 18
x = 18/9
x = 2

2) 7.8y - 4.9 - 5.4y = 2.3
2.4y = 7.2
y = 7.2/2.4
y = 3

3)

$\frac{2}{3} x - 5 = 1$
$\frac{2}{3} x = 5 + 1$
$\frac{2}{3} x = 6$

Multiply by 3 by both sides:

$3 \times \frac{2}{3} x = 3 \times 6$

Simplify:

2x = 18
x = 18/2
x = 9

4)

$\frac{7}{5} y = 3 - \frac{1}{5}$

Do lowest common denominator:

$\frac{7}{5} y = \frac{(5 \times 3) - 1}{5}$
$\frac{7}{5} y = \frac{15 - 1}{5}$
$\frac{7}{5} y = \frac{14}{5}$

Simplify by 5 by both sides:

$7y = 14$
$y = \frac{14}{7}$
$y = 2$

6 0

3 years ago

Read 2 more answers