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LenaWriter [7]
4 years ago
7

Can anybody help me please

Mathematics
1 answer:
Nikitich [7]4 years ago
4 0

Answer: 1: Yes 2: No 3: No

Step-by-step explanation:

You plug in each ordered pair into the equation.

1: 4(3) + 3(1) = 15

12+3=15

2: 4(7) + 3(0) = 15

28+0=15 X

3: 4(0) + 3(-3) = 15

0+-9=15 X

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8 0
3 years ago
You collect a total of $75 in donations from three people. The three donations are in the ratio 4 : 4 : 7.
ArbitrLikvidat [17]
<span>Each smaller donation was for $20 The largest donation was $15 greater than the smaller donation. First, determine the size of each donation. Since they are in a ratio of 4:4:7, it's easiest to add the ratios together (4+4+7) = 15. Then divide the total donation by that sum (75/15) = 5. Finally, multiply 5 by each of the ratios. 5 * 4 = 20, 5 * 4 = 20, and 5 * 7 = 35 So the 2 smaller donations were $20 each, and the largest donation was for $35. The largest donation was $35 - $20 = $15 larger than one of the smaller donations.</span>
4 0
4 years ago
Which statement correctly describes the expression (15)(-8)?
IrinaK [193]

Answer:

C

Step-by-step explanation:

NEGATIVE TIMES POSITIVE WILL GIVE A NEGATIVE PRODUCT

7 0
4 years ago
Read 2 more answers
A box has a volume of 308 cm cubed. Its height is 4 cm greater than its length. Its length is 3 cm greater than its width. What
kifflom [539]

Answer:

4 cm.

Step-by-step explanation:

Given:

A box has a volume of 308 cm cubed.

Its height is 4 cm greater than its length.

Its length is 3 cm greater than its width.

Question asked:

What is the width of the box?

<u>Solution</u>:

Let width  = x\ cm

Length = x+3\ cm

Height = x+3+4=x+7\ cm

<u>As we know:</u>

<u />Volume\ of\ box=length\times width\times height

308=(x+3)\times x\times(x+7)\\ \\ 308=(x^{2} +3x)(x+7)\\ \\ 308=x^{2} (x+7)+ 3x(x+7)\\ \\ 308=x^{3} +7x^{2} +3x^{2} +21x\\ \\ 308=x^{3} +10x^{2} +21x\\ \\ Subtract\ 308\ from\ both\ sides\\ \\ x^{3} +10x^{2} +21x-308=0\\ \\ factor\ left\ side\ of\ equation\\ \\ (x-4)(x^{2} +14x+77)=0\\ \\  Set\ factors\ equal\ to\ 0.\\ \\ x-4=0 \ or\  x^{2} +14x+77=0\\ \\ \\

As width can never be in negative, x= 4\ cm

By substituting the value:-

Width  = x\ cm = 4 cm

Thus, width of the box is 4 cm.

4 0
3 years ago
Mary baked 3 pies. 1 for her father, 1 for her friend joe, and 1 for her coworkers. Combination, permutaion or niether?
lbvjy [14]
The answer is permutation. It is <span>the action of changing the arrangement, especially the linear order, of a set of items.

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
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6 0
4 years ago
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