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2 years ago

Which number has an 8 that is one tenth the value of the 8 in 78?

Mathematics

2 answers:

ira [324]2 years ago

8 0

7.8 (0.8 is one tenth of 8)

vfiekz [6]2 years ago

4 0

Answer:

7.8

Step-by-step explanation:

78 DIVIDED BY 10 IS 7.8.

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luda_lava [24]

Answer:

1) $242.47

2) $\frac{5}{27}$

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3 years ago

Solve for the area (A) of a rectangle if the length (l) is 4x and the width (W) is 5x*. Remember Area = length x width

Harrizon [31]

Answer:

If area = length * width that means the answer is 4x * 5x = 20x².

8 0

3 years ago

The length of a rectangle is three times its breadth if the breadth is decreased by 2 m and breadth increased by 4 m the area of

White raven [17]

Answer:

Let the breadth is x, then the length is 3x.

The area is:

A = lw = 3x*x = 3x²

The breadth is decreased by 2 m:

w = x - 2

The length is increased by 4m:

l = 3x + 4

The area is now:

(x - 2)(3x + 4) = 3x² - 1/3(3x²)
3x² + 4x - 6x - 8 = 2x²
x² - 2x - 8 = 0
x² - 2x + 1 = 9
(x - 1)² = 3²
x - 1 = 3
x = 4

The breadth was 4 m and the length 12 m

8 0

2 years ago

What is x -2=-11? Algebra

neonofarm [45]

Answer:

-9

Step-by-step explanation:

you'd add 2 to the -11 which would equal -9 and leave you with x=-9

8 0

3 years ago

Read 2 more answers

PROVE : sin^2(-300°).cos^2 (120)+ cos^2(-240 ).sin^2(390)=1/4

leva [86]

Step-by-step explanation:

$\sin {}^{2} ( - 300) \cos {}^{2} (120) + \cos {}^{2} ( - 240) \sin {}^{2} (390) = \frac{1}{4}$

$\sin {}^{2} (60) \cos {}^{2} ( {}^{} 120) + \cos {}^{2} (120) \sin {}^{2} (30)$

$\frac{3}{4} \frac{1}{4} + \frac{1}{4} \frac{1}{4}$

$\frac{3}{16} + \frac{1}{16} = \frac{4}{16} = \frac{1}{4}$

3 0

1 year ago