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3 years ago

What is the greatest common factor of 14, 51 ,21

Mathematics

1 answer:

nikitadnepr [17]3 years ago

4 0

Answer:

The answer is 1

Step-by-step explanation:

14 = 2 × 7

51 = 3 × 17

21 = 3 × 7

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if your teacher tells you to do questions 28 through 41 in your math book for homework, how many questions is that

katrin2010 [14]

Its 14.
30-40 is 11, 28-29 is 2, and 41 is 1.

5 0

3 years ago

If 4x+(y+x)=180 what is x? what is y?

uysha [10]

Step-by-step explanation:

$4x+(y+x)=180\\\\\text{Solve for}\ x:\\\\4x+y+x=180\qquad\text{combine like terms}\\\\(4x+x)+y=180\qquad\text{subtract}\ y\ \text{from both sides}\\\\5x=180-y\qquad\text{divide both sides by 5}\\\\\dfrac{5x}{5}=\dfrac{180-y}{5}\\\\\boxed{x=\dfrac{180-y}{5}}\\\\\text{Solve for}\ y:\\\\5x+y=180\qquad\text{subtract}\ 5x\ \text{from both sides}\\\\\boxed{y=180-5x}$

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3 years ago

State the property that justifies the statement: If 4x + 9 = 15 and X=2y + 1,

GREYUIT [131]

Answer:

Substitution property of equality

Step-by-step explanation:

Given

$4x + 9 = 15$ and $x = 2y + 1$

Then

$4(2y + 1) + 9 = 15$

Required

State the property

From the list of options, (d) answers the question.

This is so because:

Substitution property of equality states that

If $a = b$ then $b = a$

In other words, both can replace one another.

So if $x = 2y + 1$ , then 2y + 1 can be substituted for x in $4x + 9 = 15$

So:

$4x + 9 = 15$ becomes

$4(2y + 1) + 9 = 15$

Hence, it is substitution property of equality

6 0

2 years ago

X=v-w+u solve for u

katovenus [111]

Answer:

u = -v + w + x

Step-by-step explanation:

Solve for u:

x = u + v - w

x = u + v - w is equivalent to u + v - w = x:

u + v - w = x

Subtract v - w from both sides:

Answer: u = -v + w + x

4 0

3 years ago

Simplify (3k^4) (7k^5)

Hunter-Best [27]

Answer:

21 k^9

Step-by-step explanation:

(3k^4) (7k^5)

Multiply the coefficients

3*7 = 21

Add the exponents

k^(4+5) = k^(9)

Put back together

21 k^9

4 0

3 years ago