2 years ago

To compare and order fractions,the fraction can be written with a

Mathematics

1 answer:

Greeley [361]2 years ago

5 0

Common denominator i believe. i’m not sure. hope this helps

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A type is typically makes an error on one out of every 21 documents they complete if the typist can complete 120 documents an ho

motikmotik

<span>Answer: 21 document= 1 error 120 document= 1 hour in three and a half hours= 21 mistakes</span>

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3 years ago

Two cars leave at the same time from points A and B, the distance between them is 280 km. If the cars meet each other, they’ll m

kykrilka [37]

Set up the following equations:

$2x + 2y = 280$

$14x - 14y = 280$

x represents car A's speed, and y represents car B's speed.

We'll use elimination to solve this system of equations. Multiply the first equation by 7:

$(2x + 2y = 280) * 7 = 14x + 14y = 1960$

$14x - 14y = 280$

Combine both equations:

$28x = 2240$

Divide both sides by 28 to get x by itself:

$x = 80$

The speed of car A is 80 mph.

Since we now know the value of one of the variables, we can plug it into the first equation:

$2(80) + 2y = 280$

$160 + 2y = 280$

Subtract 160 from both sides.

$2y = 120$

Divide both sides by 2 to get y by itself:

$y = 60$

The speed of car B is 60 mph.

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3 years ago

What part of an algebraic expression 7a - 4 is the constant

Yuliya22 [10]

In the algebraic expression a constant is a fixed value, and in this case it is 4. If the question was asking for the coefficient, then the answer would’ve been 7 due to to variable being multiplied.

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1 year ago

*math please help* Simplify.

Ghella [55]

$Given : \frac{\frac{4x}{5 + x}}{\frac{6x}{x + 2}}$