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Lady bird [3.3K]
3 years ago
7

The temperature dropped from 75° to 50° what is the percent decrease in the temperature

Mathematics
1 answer:
Soloha48 [4]3 years ago
4 0
Percent change is

(New - old) / old

50 - 75 / 75

25 / 75 = .33333333....

To convert to a percent, multiply by 100

Percent decrease = 33.33%
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at a farm the ratio of cows to horses was 10:3 if there were 20 cows at the farm how many horses were there?
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Answer:

x = 3

Step-by-step explanation:

x + 3 = 4x - 6

add 6 to both sides

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3 years ago
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A solid oblique pyramid has an equilateral triangle as a base with an edge length of 4 cm and an area of 12 cm2. What is the vol
Pavel [41]

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Let me define pyramid first.A pyramid is a Polyhedron , whose base  can be any polygon and it's faces are triangular which meet at a point called vertex.

Volume of Pyramid =  \frac{1}{2}\times{\text{Area of Base}\times{\text{Height}

Side of base which is an equilateral triangle= 4 cm

Area of whole pyramid = 12 square cm

Area of Equilateral triangle having side 4 cm=\frac{\sqrt3}{4}\times(Side)^2=\frac{\sqrt3}{4}\times(4)^2=4 \sqrt3 cm²

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Height =\frac{12-4\sqrt3}{2}

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8 0
3 years ago
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jeka94

Answer:

The Area is 99 units², while the perimeter is 40 units

Step-by-step explanation:

Area can be found by multiplying the length of the rectangle by the width of the rectangle. Counting the boxes on the side gives you 11 horizontally and 9 vertically. Multiplying these two gives you an area of 99. The measurement is  in units because there is no given unit of measurement such as inches, feet, or meters. Area is always squared which is why there is a ² after units.

Perimeter can be found by adding all 4 sides together. Counting the boxes gives you 11 + 11 + 9 + 9. This gives you a perimeter of 40.  The measurement is in units because there is no given unit of measurement such as inches, feet, or meters. Perimeter is not squared like area.

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