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baherus [9]
3 years ago
13

Question 1: 27 is 90% of what number?

Mathematics
2 answers:
Tatiana [17]3 years ago
7 0

1. 27=0.9x

27/0.9=x

x=30

2. 64=0.4x

64/0.4=x

x=160

3. 82=0.2x

82/0.2=x

x=410

marshall27 [118]3 years ago
5 0

Divide the known value by the percentage.

1. 27 / 0.90 = 30

2. 64 / 0.40 = 160

3. 82 / 0.20 = 410

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lianna [129]

Answer:

In 9 days will the second warehouse have 1.5 times more coal than the first one

Step-by-step explanation:

The coal left in warehouses after x days can be found using the equation:

  • first warehouse: 185 - 15x
  • second warehouse= 237-18x

Let the second warehouse have 1.5 times more coal than the first one after n days then  

  1. 1.5 ×(185 - 15n)=237-18n  which gives:
  2. 277,5-22,5n=237-18n and
  3. 40,5=4,5n
  4. 9=n

7 0
3 years ago
Identify the graph of the line passing through (0, -3) and (1, 0)
Elena-2011 [213]
Choice B:
The line intersects at both points (0,-3) and (1,0)

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5 0
3 years ago
Tony has $727.29 in his checking account. He must maintain a $500 balance to avoid a fee. He wrote a check for $248.50 today. Wr
aleksley [76]
727.29 + 248.50 − x ≥ 500;
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6 0
4 years ago
In triangle ABC above, AD is perpendicular to CB. If the lengths of AD and CB were both increased by 50%, how would the area of
astra-53 [7]

Answer:

The answer is below

Step-by-step explanation:

A triangle is a polygon with three sides and three angles. There are different types of triangles such as scalene triangle, equilateral triangle, isosceles triangle.

The area of a triangle is given as:

A = (1/2) * b * h

where b = base of triangle, h = height of triangle , A = area

Let BC = base = x, and AD = height = y, hence:

A = (1/2) * x * y = 0.5xy

If the lengths of AD and CB were both increased by 50%, hence:

new AD = y + 0.5y = 1.5y, new CB = x + 0.5x = 1.5x

The new area= (1/2) * 1.5y * 1.5x = 1.125xy

Increased area / area = 1.125xy / 0.5xy = 2.25

If the lengths are increased by 50%, the area would also increase and the new area would be 2.25 times

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3 years ago
What is the quotient (2x3 − 15x2 − 10x + 16) ÷ (x − 8)?
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