3 years ago

7x-6=21+7x solve for x.

Mathematics

1 answer:

tigry1 [53]3 years ago

6 0

Answer: x= 34/7

Step-by-step explanation:hope this helps!

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Factor the following expression.

Strike441 [17]

Whats the expression

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3 years ago

Eugene walked all the way to school at 3 mph then realized she forgot her math book (how could she?!), so she ran back at 7 mph.

Fynjy0 [20]

$\text{Answer: }1\frac{23}{40}\ miles\text{ far she live from school.}$

Explanation:

Since we have given that

Speed at which Eugene walked all the way to school = 3 mph

After realizing that she forgot her math book, she ran back

Speed at which Eugene walked back to her house = 7 mph

Let the distance between her house and her school be x

According to question,

$\frac{x}{3}+\frac{x}{7}=\frac{45}{60}\\\\\frac{7x+3x}{21}=\frac{3}{4}\\\\\frac{10x}{21}=\frac{3}{4}\\\\x=\frac{3\times 63}{4\times 10}=\frac{63}{40}=1\frac{23}{40}\ miles.$

Hence,

$1\frac{23}{40}\ miles\text{ far she live from school.}$

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2 years ago

If 430 pounds of pebbles cover 1500 square feet, how many pounds of pebbles are necessary to cover 75,000 square feet?

drek231 [11]

6500 pounds are necessary to cover 75000 square feet

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3 years ago

What is another way to write x 4/3

zloy xaker [14]

Answer:

1.3333333333333333 or 1 1/3

Step-by-step explanation:

What is the x?

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3 years ago

sally has a pet snail that snail fell in the well the well is 16 feet deep. each day the snail climbs up 5 feet but each night i

vlada-n [284]

Answer:

The net speed per 24 hours is 5 - 4 = 1 foot.

1 ft / 24 hrs = 16 ft / x hrs

16 * 24 hrs = 16 days (384 hrs)

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2 years ago

7x-6=21+7x solve for x. ​

7x-6=21+7x solve for x.