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max2010maxim [7]
3 years ago
7

1. Examine the expression 5x + 9 - 2x - 7y.

Mathematics
1 answer:
Len [333]3 years ago
7 0

Answer:

a. 4

b. -7

c. -7y+3x+9

Step-by-step explanation:

A. Okay well 5x, 9, -2x, and -7y are the 4 terms.

B. The coefficient (meaning the number attached to the y) is -7

C. Simplified would be finding the common variables; 5x and -2x. Subtract and you get 3x. You can't combine any more of your terms so you are left with -7y+3x+9

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Leanne multiplied 8 x 4.3 and got 32.24. Is Leanne correct?Use an area model to explain your answer
dlinn [17]

Answer:

No, not correct.  

Step-by-step explanation:

Note that 8 * 4.3 can be broken up as follows:

8 * (4 + 0.3)

and that 4*8 =32, and that 0.3(8) = 2.4 (not 0.24).

Then 8 * (4 + 0.3) becomes 32 + 2.4 = 34.4

3 0
3 years ago
The cost of a gallon of orange juice is $3.50. What is the maximum number of containers you can buy for $15
Burka [1]

Answer:

4

Step-by-step explanation:

15/3.50 = 4.285

You need to round down to have the answer make sense (you can't buy 1/4 of a juice.

you can buy 4 containers of juice

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3 years ago
Does f(x) = 5-4x-x^2 have maximum or minimum
Oksi-84 [34.3K]

Answer: when you graph it, it opens down so it will have a maximum

Step-by-step explanation:

5 0
3 years ago
Another math question: You have 15 apples you friend gives you 15 more now withth the total of apples you have, you have to answ
jarptica [38.1K]

Answer:

27000

Step-by-step explanation:

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4 0
2 years ago
Read 2 more answers
HELP PLEASE WITH EXPLANATION
avanturin [10]
So hmm notice the picture below

that's the 30-60-90 rule, notice your triangle, the bottom-left-angle is a right angle, 90°, the angle atop is 30°, so the angle on the bottom-right has to be 60°, thus is a 30-60-90 triangle, and as you can see on the triangle on the left in the picture, those are the ratios for it

so 8 will be x, what is the longer leg or side in yours then? well, is \bf 8\sqrt{3}


3 0
3 years ago
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