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Basile [38]
3 years ago
13

I need help, 15 points!

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
7 0

Answer:

3(a + 5b + 7c) and 2x(2 + 5y + 11z)

Step-by-step explanation:

3a + 15b + 21c

3(a + 5b + 7c)

4x + 10xy + 22xz

2x(2 + 5y + 11z)

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Mark and Don are planning to sell each other their marble collections at a garage sale. If Don has 1 more than 3 times the numbe
Volgvan

Answer: Mark has 28 marbles while Don has 85 marbles.

Step-by-step explanation:

Let x represent the number of marbles that Mark has.

Let y represent the number of marbles that Don has.

If Don has 1 more than 3 times the number of marbles Mark has, it means that

y = 3x + 1

The total number of marbles is 113. It means that

x + y = 113- - - - - - - - - - - - 1

Substituting y = 3x + 1 into equation 1, it becomes

x + 3x + 1 = 113

4x + 1 = 113

4x = 113 - 1 = 112

x = 112/4

x = 28

y = 3x + 1 = 3 × 28 + 1

y = 85

4 0
3 years ago
128 ounces is how many pounds​
LiRa [457]

Answer:

An ounce is a unit of weight equal to 1/16th of a pound or about 28.35 grams.

A pound is a unit of weight commonly used in the United States and the British commonwealths. A pound is defined as exactly 0.45359237 kilograms.

Step-by-step explanation:

128 Ounces =

8 Pounds

6 0
3 years ago
Read 2 more answers
PLEASE HELP ITS URGENT
Sveta_85 [38]
X^2-22x-48=0
x^2-24x+2x-48=0
x(x-24)+2(x-24)
(x+2)(x-24)

Solve by grouping if you are able to find distinct factors that multiply to the last term and add to the middle term...this method is rather easy with easy to manage numbers. Complete the square if you cannot find distinct factors that multiply to the last term and add to the middle term. Completing the square helps when the equation is in the form of a parabola.
6 0
3 years ago
Find the slope and reduce.<br> P=(-3, -4) Q=(5, -1)<br> ?<br> Slope =<br> Enter
arsen [322]

Answer:

Slope is 3/8

Step-by-step explanation:

( -1 + 4)/ (5 + 3)

3/ 8

8 0
3 years ago
−2/3(15x + 3) = −3x − 9<br> what is x?
asambeis [7]

Answer:

X=1

Step-by-step explanation:

-10x-2=-3x-9

-10x-2+2=-3x-9+2

-10x=-3x-7

-10x+3x=-3x-7+3x

-7x=-7

Then divide both sides by -7

x=1

5 0
3 years ago
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