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2 years ago

Double points plz help

Mathematics

1 answer:

tangare [24]2 years ago

5 0

When x is 100 y will be 122

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What is the percentage of change from 12 to 19

tiny-mole [99]

Answer:

(19-12):12*100 =

(19:12-1)*100 =

158.33333333333-100 = <u>58.33</u>

3 0

2 years ago

A written explanation solving the question how much fluid is needed using the Pythagorean method and finding the area of the tri

Alecsey [184]

Answer:

793 liters of washing fluid is needed

Step-by-step explanation:

step 1

Find the slant height of the triangular faces of pyramid

we know that

The lateral area of a square pyramid is equal to the area of its four triangular faces

$LA=4[\frac{1}{2}bl]$

where

b is the base of triangle (is the same that the length of the square base)

l is the slant height

To find out the slant height we need to apply the Pythagorean Theorem

$l^2=(b/2)^2+h^2$

we have

$b=35.42\ m$

$h=21.64\ m$

substitute

$l^2=(35.42/2)^2+21.64^2$

$l^2=781.9337$

$l=27.96\ m$

step 2

Find the lateral area of the pyramid

$LA=4[\frac{1}{2}bl]$

we have

$l=27.96\ m$

$b=35.42\ m$

substitute

$LA=4[\frac{1}{2}(35.42)(27.96)]$

$LA=1,980.6864\ m^2$

step 3

Find out how much window washing fluid is needed

we know that

2 L of washing fluid cover 5 square meters

using proportion

$\frac{2}{5}\ \frac{L}{m^2}=\frac{x}{1,980.6864}\ \frac{L}{m^2}\\\\x=1,980.6864(2)/5\\\\x= 792.27\ L$

Round up

793 liters of washing fluid is needed

6 0

3 years ago

brian got in a taxi at 6:20 am and arrived at his destination at 7:10 am how long did his destination take

Komok [63]

His destination took 50 minutes long

4 0

2 years ago

PLEASE HELP WITH THIS

choli [55]

Answer:

look at the equation carefully and solve it .

Step-by-step explanation:

3 0

2 years ago

7 x 3 1/4 = in fraction

dsp73

Answer:

22 3/4

Step-by-step explanation:

divide 1/4 which is 0.25, then add 3 to that, then multiply it by 7 which is 22.75

then convert it back into a fraction which is 22 3/4

4 0

2 years ago