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bekas [8.4K]
3 years ago
15

Can u guys explain how to get the answer plzzz I need help with 32

Mathematics
1 answer:
givi [52]3 years ago
7 0
To determine which answer is correct, apply the given ratio. 1/20:? Just by looking at it we know C is wrong. 4:100 is simplified to 1:25. B is also wrong, as 180:9 is 20:1, which is backwards from 1:20. However, A is correct because 9:180 is 1:20. D is also wrong for the same reasons B and C are wrong. Your answer is A!
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Solve the equation 4(3y-1)-3(2y)=6​
olga nikolaevna [1]

Answer:

4(3y - 1) - 3(2y) = 6

Remove backets

12y - 4 - 6y = 6

Group and Evaluate like terms

12y - 6y = 6 + 4

6y = 10

y = 10 \div 6

y = 1.67

y =  \frac{5}{3}

6 0
3 years ago
The ratio of red paint to blue paint is 2:1. What does the ratio 2:1 mean?
Artemon [7]
This means the for every 2 units of red paint, there is 1 unit of blue paint
exg
in a mixture, mix a red and blue paint to get a type of purple that is the ratio of 2:1 (red:blue)
so exg if you wanted 3 gallons you would do 2 gallons of red+1 gallon of blue since 2+1=3
it could also mean quantity
there are 2 tiles painted red for every 1 tile painted blue resulting in 2 unit of red paint to 1 unit of blue

4 0
3 years ago
I WILL GIVE BRAINLIST HELP PLEASE
il63 [147K]

Answer:

area- 55 perimeter - 24

Step-by-step explanation:

small rectangle =

5- 3 = 2

2 × 3 = 6cm²

big rectangle =

4 + 3 = 7

7 × 7 = 49cm²

All together

6 + 49 = 55cm²

Perimeter -

7 0
3 years ago
IfA=−3n+2 andB=5n−7, what is the value of A−B, in simplest form?
alukav5142 [94]

Answer:

Either -4n or 0n but most likely -4n

4 0
3 years ago
Find the area of the regular polygon​
Y_Kistochka [10]

Answer:

A = 374.123 ft^2

Step-by-step explanation:

First, lets calculate the perimeter:

Perimeter (p) = side length (s) * number of sides (n)

p = s * n

p = 12 * 6

p = 72

Next, lets find the apothem, which is the shortest length from any side to the middle. It's like the radius in a circle, but more complicated.

Apothem (a) = side length (s) / ( 2 * tan(180/number of sides (n)) )

a = \frac{s}{2 * tan (\frac{180}{n} )}

a = \frac{12}{2 * tan (\frac{180}{6} )}

a = \frac{12}{2 * \frac{\sqrt{3} }{3}}

a = \frac{12}{\frac{2\sqrt{3} }{3}}

a = \frac{12*3}{2\sqrt{3}}

a = \frac{6*3}{\sqrt{3}}

a = \frac{18}{\sqrt{3}}

Now, finally, to find the area of a regular polygon, we use the following equation:

Area (A) = ( apothem (a) * perimeter (p) ) / 2

A = \frac{a * p}{2}

A = \frac{\frac{18}{\sqrt{3} }  * 72}{2}

A = \frac{18}{\sqrt{3}}  * 36

A = \frac{640}{\sqrt{3}}

Turning into a decimal:

A = 374.123 ft ^2

8 0
3 years ago
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