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3 years ago

1 Simplify the following expressions: 1) -4(a + 2) - a

Mathematics

2 answers:

aleksandrvk [35]3 years ago

8 0

1.C) -4a-8-a = -5a-8
2. C)-2 - x - 4.3= -6.3 -x
3.A) -2x+6-x-4= -3x+2
hope it helps

sertanlavr [38]3 years ago

5 0

These are very easy just distribute

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Yeah thanks if u help I love u no matter what..

skad [1K]

Answer:

please stop all this love comments

Step-by-step explanation:

okk? that will be better

3 0

2 years ago

What is the measure of A?<br> (3y + 27)<br> What is the measure of B?<br> (5y - 3)

user100 [1]

Answer:

y=15

Step-by-step explanation:

3y+27=5y-3

27=2y-3

30=2y

y=15

Thats assuming A and B are equal ^

Hope this helps :)

4 0

3 years ago

Adding mixed numbers. Can someone help me correct my answer?

Olin [163]

Answer:

27 13/60

Step-by-step explanation:

What you have tried to do is not an impossible way to do it. What you could do is set your fractions and whole numbers like this.

( 7 + 1/10) * (3 + 5/6) I don't know if you know what FOIL is, but that is the way to proceed.

First: (meaning the first in each factor ). 3 * 7 = 21
Outside: (meaning the two terms near outside the brackets) 7 * 5/6 = 5 5/6
Inside: The two terms closest to the * sign 1 / 10 *3 = 3/10
Last: The two end terms (1/10 * 5/6 = 5/60 5/60

Now you can add. 21 + 5 is the whole number amount = 26

Add the fractions

5/6 + 3/10 + 5/60 The lowest common multiple is 60
50/60 + 18/60 +5/60 = 73 / 60 = 1 and 13/60

Add that to 26 and you get 27 13/60

3 0

3 years ago

Create an equation with the indicated number of solutions.

GenaCL600 [577]

An equation that doesn't have a solution would have to end up as something impossible when you solve it all out, like
5=3.

When you simplify your equation out, you get

3x-4=3x+?

Subtract 3x from both sides.

-4=?

From this, you can tell that you need to out something in the ? that will make the equation false, or something that doesn't equal -4.

You could put anything in the ? as long as it is not -4.

Hope this helps!

4 0

3 years ago

My boss has told me that I will need one gallon of paint for every 300 square feet of wall I must paint. Unfortunately, the stor

lubasha [3.4K]

Answer: 14 cans

Step-by-step explanation:

Given, Total area to paint = 400 square meters

approximately 3.28 feet in a meter.

So, 400 square meters = 400 x (3.28)² square feet

i.e. Total area to paint = 4303.36 square feet

One gallon of paint requires for every 300 square feet.

One liter contains approximately 0.264 gallons

Then, One gallon = $\dfrac{1}{0.264}\approx3.78\text{ liters}$

So, 3.78 liters paint requires for every 300 square feet.

Paint requires for each square feet = (3.78)÷(300) liters

Total paint required = (Total area to paint ) x (Paint requires for each square feet)

= (4303.36)x (3.78)÷(300)

≈54.22 liters

Each can contains 4 liters of paint.

Smallest number of cans required = (Total paint required )÷ 4

=(54.22 ) ÷ 4

= 13.55≈ 14

Hence, 14 cans are required .

4 0

3 years ago