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Dominik [7]
3 years ago
9

Simplify the following expression completely:( x 6 ) 7

Mathematics
1 answer:
Allisa [31]3 years ago
3 0

Answer:

42x

Step-by-step explanation:

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-1/4 (x+7)=1/4 what is the answer? for whom every answer it get 45 point​
weqwewe [10]

Answer:

x = -8

Step-by-step explanation:

Solve for x:

-(x + 7)/4 = 1/4

Multiply both sides of -(x + 7)/4 = 1/4 by -4:

(-4 (-(x + 7)))/4 = -1

-4×(-1)/4 = (-4 (-1))/4:

(-4 (-1))/4 (x + 7) = -1

(-4)/4 = (4 (-1))/4 = -1:

--1 (x + 7) = -1

(-1)^2 = 1:

x + 7 = -1

4/4 = (4 (-1))/4 = 1:

x + 7 = -1

Subtract 7 from both sides:

x + (7 - 7) = -7 - 1

7 - 7 = 0:

x = -7 - 1

-7 - 1 = -8:

Answer:  x = -8

8 0
3 years ago
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If there are 42 boys and 56 girls in a room, fill out all of the possible ratios of boys to girls that could be made.
Minchanka [31]
42:56 should be the answer 100%
4 0
3 years ago
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The graph below is a function.<br><br> True or false?
Citrus2011 [14]

Answer:

true!

Step-by-step explanation:

hi, this graph is a function because it passes the vertical line test. there are no x-values with 2 y-values for the same x.

3 0
4 years ago
(a) A tram moved downward 72 meters in 8 seconds at a constant rate. What was the change in
Alex787 [66]

Answer:

a) 9 meters.

b) The total change in temperature was of 288ºC

Step-by-step explanation:

Both these questions can be solved using rules of three.

a) 72 meters in 8 seconds. How many meters it changes each second(in 1 second)?

8s - 72m

1s - x m

8x = 72

x = \frac{72}{8}

x = 9

9 meters.

b) In 1 hour, heated by 6ºC. How much in total during 48 hours?

1h - 6ºC

48h - xºC

x = 48*6

The total change in temperature was of 288ºC

3 0
3 years ago
Valerie wants to take out a discount loan of $569. The rate is 4.5% for 250 days. How much interest will she pay? (Be sure to ro
lina2011 [118]

The interest is computed from

... I = Prt

where P is the principal amount ($569), r is the rate (0.045) and t is the time in years (250/360).

... I = $569×0.045×250/360 ≈ $17.78

Please note that time is not rounded. Rather, the exact value (25/36) is used in the calculation. The only rounding of any number is done at the end, where the amount is rounded to the nearest cent. (Your text authors should know this.)

_____

If you follow the problem instructions (which Valerie's lender will <em>not</em> do), the interest is calculated as ...

... t = 250/360 = 0.6944444... ≈ 0.69 . . . . years

... I = $569×0.045×0.69 ≈ $17.67

_____

Note the rounding of intermediate numbers (time) introduces an error of about $0.11 in the answer.

8 0
3 years ago
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