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3 years ago

Help I don't understand this

Mathematics

2 answers:

tatuchka [14]3 years ago

4 0

The answer is 57, since 16•8=128 and 128-71=57

Talja [164]3 years ago

3 0

The answer is 57 as 16•8 =128

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~Draw a diagram of this statement.

TiliK225 [7]

(A) The print area is 4/10 × 100% = 40% of the total, so the ad area is ...

... 100% - 40% = 60% of the print area

(B) News : Ads = (40%) : (60%) = 2 : 3

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3 years ago

If f(x) = 8 - 4x, find the value of x when f(x) = -12.

DiKsa [7]

Answer:

x=5

Step-by-step explanation:

-12=8-4x

-20=-4x

5=x

7 0

2 years ago

Read 2 more answers

What is the area of the figure abcd

expeople1 [14]

Answer:

66 square inches

Step-by-step explanation:

The area of the figure can be found by adding the area of the rectangle and the triangle together.

The area of a rectangle is found A = l*w. Here l = 10 and w = 6. So the area of the rectangle is 10*6 = 60.

The area of a triangle is found A = 1/2 b*h. Here b = 2 from 12-10 = 2 and h = 6. So the area of the triangle is 1/2 * 2* 6 = 6.

The area together is 60 + 6 = 66 square inches.

4 0

2 years ago

ii. A machine is sold for 7,000/-. The gross loss is 20% of the cost. What are the cost and gross loss?

aleksley [76]

Given:

Selling price of a machine = 7000/-

Gross loss = 20%.

To find:

The cost and gross loss.

Solution:

Let x be the cost of machine.

According to the question,

$x-20\%\text{ of }x=7000$

$x-\dfrac{20}{100}x=7000$

$x-0.2x=7000$

$0.8x=7000$

Divide both sides by 0.8.

$x=\dfrac{7000}{0.8}$

$x=8750$

So, the cost of the machine is 8750/-.

Now,

$\text{Gross Loss}=\text{Cost}-\text{Selling price}$

$\text{Gross Loss}=8750-7000$

$\text{Gross Loss}=1750$

Therefore, the gross loss is 1750/-.

8 0

2 years ago

Becky spent 3/4 of an hour practicing the piano.She spent 1/2 of that time practicing her recital piece. What fractional part of

Ber [7]

Answer:

3/8

Step-by-step explanation:

First,

convert 3/4 of an hour to minutes;

If 1 hr = 60 mins

then 3/4 of 1hr = $\frac{3}{4} *60\\ \\ =45 mins.Next, If 1/2 of 3/4 was spent practicing recital piece, it means that it is half of 45 mins;1/2 *45 = 22.5 minsLastly, convert the 22.5 mins into a fraction of an hour;22.5/60 = [tex]\frac{3}{8}$

3 0

3 years ago