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3 years ago

Is 27 a solution???

Mathematics

1 answer:

Shkiper50 [21]3 years ago

5 0

Solution is 30 for the problem x-20=10

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Drag each equation to show if it could be a correct first step to solving the equation

forsale [732]

Answer:

(2 · x) + (2 · 7) = 36
x + 7 = 18
2x + 14 = 36

2x + 7 = 36
2(x + 7) = 72
x + 14 = 36

Step-by-step explanation:

It is appropriate to eliminate parentheses as a first step. This can be done using the distributive property, resulting in either of ...

2x +2·7 = 36
2x +14 = 36 . . . . . 2·7 evaluated mentally

or by dividing the equation by the factor outside parentheses, resulting in ...

x + 7 = 18

___

Any of the equations other than these represent violations of the equal sign. Something has been done to one side of the equation without the same thing being done to the other side.

5 0

4 years ago

Aiden has $15.00 on his copy card. Each time he uses the card to make a photocopy, $0.06 is deducted from his card. Aiden wants

melamori03 [73]

15 - 0.06X=5
would be
X=166 2/3

4 0

3 years ago

Read 2 more answers

A rate of deposit of dust from unpolluted air is 10.0 tons per square mile per month (30 days). what is this dust fall, in milli

valina [46]

The rate of dust deposition is
$Rate= \frac{10 \,tons}{mi^{2}-30\,days} = \frac{1}{3} \, \frac{tons}{mi^{2}-day}$

Note that
1 ton = 9.07185 x 10⁵ g = 9.07185 x 10⁸ mg
1 mi = 1609.34 m = 1.60934 x 10³ m
1 day = 24 h

Therefore
$Rate=( \frac{1}{3}\, \frac{tons}{mi^{2}-day} )*( \frac{1}{24} \, \frac{day}{h} )*( \frac{1}{1.60934\times10^{3}}\, \frac{mi}{m} )^{2}*(9.07185\times10^{8}\, \frac{mg}{ton})\\= 4.865\, \frac{mg}{m^{2}-h}$

Answer: $4.865\, \frac{mg}{m^{2}-h}$

3 0

3 years ago

Pls right answer do not guess this is a final pls dont guess -5x - 6 > 14

zzz [600]

Answer:

x < −4

Step-by-step explanation:

Add 6 to both sides.

-5x> 14 + 6

Simplify 14+6 to 20.

-5x>20

Divide both sides by -5.

x<-20/5

Simplify

x<−4

5 0

3 years ago

In the scenario:

xenn [34]

Answer:

Combination

Step-by-step explanation:

6 0

3 years ago