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Maurinko [17]
4 years ago
14

If the equation 2x

Mathematics
1 answer:
mojhsa [17]4 years ago
4 0

Answer:

B.{5}

Step-by-step explanation:

2-8x-42=0

(÷2), we get,

1-4x-21=0

-4x-20=0

-4x=20

x=20÷(-4)

x=(-5)

since the question asks for a positive set, the answer is [x=5]

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A taxi driver can cover a distance of 130.16 miles per gallon per 5 gallons of gas if the same taxi driver travel 60 miles at th
uysha [10]

Answer:

Gallons = 2.305

Step-by-step explanation:

Given

Rate = 130.16 miles for 5 gallons

Required

Number of gallons used for a journey of 60 miles

The rate in miles per gallon is calculated as:

Rate = \frac{Distance}{Gallons}

When distance = 130.16 and gallons = 5, we have:

Rate = \frac{130.16}{5}

Rate = 26.032

When distance = 60 miles.

Substitute 60 for distance and 26.032 for rate in Rate = \frac{Distance}{Gallons}

26.032 = \frac{60}{Gallons}

Cross Multiply

Gallons * 26.032 = 60

Gallons = \frac{60}{26.032}

Gallons = 2.305 --- <em>approximated</em>

7 0
3 years ago
(ANSWER QUICK!!!) Put the following values in order from least
denis23 [38]

Answer:

-22,(-2)2,2-2,20

Step-by-step explanation:

(-2)2=-4

2-2=0

-22,-4,0,20

8 0
2 years ago
Read 2 more answers
Just please help me!!!
mote1985 [20]

Answer:

the last one

3x-y=1

-2x+y=-4

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Drag each tle to the correct box. Rosario plans to apply for a loan this fall and is comparing the finance charges for three dif
Reptile [31]

Answer:

option z < option x < option y

4 0
3 years ago
During a clearance sale, a discount of 33.3% is given on a dinner set marked at $2799. Find it's selling price
Mashcka [7]

First, convert the 33% to a real mathematical number. For percents, this is always done by dividing the 33% by 100%, or 33% / 100% = 0.330.

Second, find out what 33% of $2799 is. This is the amount of the sale discount. This is always found by mulitplying 0.330 by the item's cost $2799, like this:

0.330 x $2799 = $923.67.

So for this sale, you'll save $923.67 on this item.

This means, the cost of the item to you is

$2799 - $923.67 = $1875.33.

Alternatively, you can think about it this way. The item is 33% off. This means you'll pay 67.000% of the total cost (100% - 33% = 67.000%).

Now what's 67.000% of the total cost?

0.670 x $2799 = $1875.33.

Just like the result above, the sale price on the item is $1875.33.

Hope this helps you on your assignment! :)

4 0
3 years ago
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