Question

Explain your answer's please,Answer as much as you can,it would help if the one question i answered to just tell me if im right or wrong If I'm right there's no need to explain but if i'm wrong it would help to explain

Select all the expression's that equal 3.15/0.45
3.15x0.45
3.15÷0.45
3.15x1/0.45
3.15÷45/100
3.15÷100/45
0.45÷3.25
Which expressions are solutions to the equation 3/4x=15 Select all that applies
15/4/3
15/3/4
4/3x15
3/4x15
15÷3/4

Solve each equation.

a. 4x=32
x=
8
b. 4=32x
x=
c. 10x=2
x=
d. 26=100x
x=
In a lilac paint mixture, 40% of the mixture is white paint, 20% is blue, and the rest is red. There are 4 cups of blue paint used in a batch of lilac paint.
a. How many cups of white paint are used?
cups
b. How many cups of red paint are used?
cups
c. How many cups of lilac paint will this batch yield?
cups
Triangle P has a base of 12 inches and a corresponding height of 8 inches.

Triangle Q has a base of 15 inches and a corresponding height of 6.5 inches.

Which triangle has a greater area?

Triangle
Q
has a greater area. Its area is
(102)
square inches greater.

I have more questions where you can make even more point's so it'd help if you helped a girl out and looked at them.

Answer 1

Select all the expression's that equal 3.15/0.45

• 3.15÷0.45 , '/' is the same as the '÷' symbol
• 3.15x1/0.45 , dividing is same as multiplying by the reciprocal
• 3.15÷45/100 , 0.45=45/100 in fraction form

Which expressions are solutions to the equation (3/4)x=15 Select all that applies

• 4/3·15

multiply the right side by the reciprocal to find x.

x = 15·(4/3) = 4/3·15

Solve each equation.

a. 4x=32

x= 8

b. 4=32x

x= 4/32=1/8

c. 10x=2

x= 2/10=1/5

d. 26=100x

x= 26/100=13/50

In a lilac paint mixture, 40% of the mixture is white paint, 20% is blue, and the rest is red. There are 4 cups of blue paint used in a batch of lilac paint.

a. How many cups of white paint are used?

(.2)x = 4 , 20%==0.2

x= 4/(.2) = 20cups total

(.4)(20) = 8 white cups , 40%==0.4, this is 40%(.4) of total amount(20)

b. How many cups of red paint are used?

• (.4)(20) = 8 red cups ,

red makes up 40% of the batch because

100%(total) - 40%(white) - 20%(blue) = 40%(red)

c. How many cups of lilac paint will this batch yield?

• 20 cups total

Triangle P has a base of 12 inches and a corresponding height of 8 inches.

A₁ = 1/2(12)(8) = 48in²

Triangle Q has a base of 15 inches and a corresponding height of 6.5 inches.

A₂ = 1/2(15)(6.5) = 48.75in²

Which triangle has a greater area?

A₂ - A₁ = 48.75 - 48 = 0.75in²

• Triangle Q has a greater area. Its area is 48.75in². It's .75in² greater than area of triangle P.

Area of a triangle is A=1/2(Base)(Height), which I calculated above