Help me please!!!!!!!!!!!!!!!!!!

Answers

Answer 1

Answer:

53+26=26+53 because its switched so the number that is not there you have to put it in the blank

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Would 15.75 be as a fraction 15/750

Answers

to convert decimals to fractions is easy
.75=75/100 or 3/4

so 15.75=63/4

also since 15/7500 is less than one, it cannot be equivilent to 15.75

no, 0.75 is 3/4 and 15 is 60/4 therefor add them together to get 63/4, which can't be cancelled down. Therefor 15.75 is 63/4 as a fraction. It is not 15/7500 15 is smaller than 7500 therefor there would be no whole numbers. Remember a fraction is one thing dividing by another.

-3(4v+1)-3(2v+3) how do you simplify

Answers

First you have to multiply the numbers out of the paranthesis, with the numbers in it:
$-3(4v+1)-3(2v+3)\n -3\cdot 4v-3\cdot 1-3\cdot 2v-3\cdot 3$
then solve :
$-12v-3-6v-9\n -18v-12$

$-3(4v+1)-3(2v+3) =\n-12v-3-6v-9=\n-18v-12$

Without calculating, is 1 1/6 × 4/5 less than or greater than 1 1/6. Is the product less than or greater than 4/5? Explain your reasoning

Answers

1 and 1/6 is 1.16666666 (1 divided by 6) and if it is multipled by 1 it is still 1.1666666, so if it is multipled by a number less than 1 it will be less than the original number (multiply it by a half and you half it, this is multiplied by 0.8)

Solve the equation 6=2(x+8)-5x

Answers

Answer:

x = 10/3

Step-by-step explanation:

6=2(x+8)-5x

Distribute

6 = 2x+16-5x

Combine like terms

6 = 16-3x

Subtract 16 from each side

6-16 = 16-16-3x

-10 = -3x

Divide by -3

-10/-3 = -3x/-3

10/3=x

Answer:

-1.43

Step-by-step explanation:

6=2(x+8)-5x

take 2 and deposit it into the parenthesis thatll give you

6=2x+16-5x

next you combine like terms so add 5x to both sides to cancel -5x then you get

6=7x+16

then you take subtract 16 on both sides which will give you

-10=7x

finally you divide 7x on both sides to get x by itself which will give you your final answer of...

-1.43=x

Is y=7.5x a proportional relationship and why

Answers

Direct Proportion functions look like this:

y=kx

'k' is the constant of proportionality and in this case its 7.5 or 15/2.

--------------------------------------------

When x=1, y=7.5
When x=2, y=15
When x=3, y=22.5

Therefore y is directly proportional to x.

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DIRECT PROPORTION EXPLAINED:

Say a football costs £7.50. If you buy one football you'll have to pay out £7.50, but if you you buy two footballs you'll have to pay out £15.00. Therefore the cost of the football(s) is directly proportional to the amount of footballs you buy. C=cost, f=football(s) and C∝f, therefore C=kf, but as k=7.5, C=7.5f.

INVERSE PROPORTION EXPLAINED:

If it were to take 8 hours for one bricklayer to set up a wall, how long would it take for two bricklayers to set up a wall? The answer in this case would be 4 hours.

T=time to set up a wall
b=bricklayer(s)

Therefore T∝1/b, and T=k/b. In this case k=8 so T=8/b.

When b=1, T=8.
When b=2, T=4.

We'd say that the time it would take for bricklayers to set up a wall would be inversely proportional to the amount of bricklayers available.

What is the answer to -3(2x-3)=33

Answers

Answer:

The answer is -4.

Step-by-step explanation:

Start with distribution: -6x+9=33

Additive Inverse of 9: -6x+9=33

-9 -9

----------------

Divide both sides by -6: -6x = 24

x=-4

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