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3 years ago

Evaluate 2.5(8.6/2)-1.8

Mathematics

1 answer:

777dan777 [17]3 years ago

3 0

Step-by-step explanation:

Given the expression:

$2.5( \frac{8.6}{2} ) - 1.8$

Follow BODMAS rule.

always evaluate brackets first, followed by multiply or division then addition or subtraction from LEFT to RIGHT.

$2.5( \frac{8.6}{2} ) - 1.8 \\ = 2.5(4.3) - 1.8 \\ = 10.75 - 1.8 \\ = 8.95$

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Write the standard form of a line that passes through the given points (4,7) and (0,7)

VARVARA [1.3K]

The slope-intercept form:

$y=mx+b$

m - slope

b - y-intercept → (0, b).

We have the points (4, 7) and (0, 7) → b = 7.

Calculate the slope:

$m=\dfrac{7-7}{0-4}=\dfrac{0}{-4}=0$

Therefore we have $y=0x+7=7$

The standard form: $Ax+By=C$

<h3>Answer: y = 7.</h3><h3><em>It's a horizontal line.</em></h3>

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3 years ago

How many 1/8 portions are in 3/4

Zigmanuir [339]

1/4 = 2/8
3/4 = 6/8
2/8 * 3/1 = 6/8
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6 1/8 portions are in 3/4

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3 years ago

What does 2/3x=−1/3x−4 equal to

Misha Larkins [42]

I don’t understand how you worded the question but x=-4 if thats what you are looking for

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3 years ago

Mary ran 1/5 of 1 km each day. How many meters did she run from Monday to Wednesday?

lord [1]

Answer:

3/5 or 0.6 in decimal form

Step-by-step explanation:

All you have to do is multiply 1/5 x 3 for the three days Monday, Tuesday and Wednesday and that gets you 3/5 or as 1/5 of a km is 0.2 you have to multiply 0.2 x 3 and you get 0.6 which is equivalent to 3/5

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4 years ago

Find the equation of the straight line with the gradient -2/3 and passing through the point(1,1)

adell [148]

Answer:

y = -2/3 x + 5/3

Step-by-step explanation:

y = mx + b

y = -2/3 x + b

1 = -2/3 × 1 + b

3/3 + 2/3 = b

b = 5/3

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2 years ago