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aniked [119]
3 years ago
6

Still helping my lil sister Answer all three

Mathematics
1 answer:
wel3 years ago
5 0

Answer:

3. D

4. C

5. I don't know sorry

Step-by-step explanation:

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A store is having a sale on jellybeans in trail mix. For 2 pounds of jellybeans and 12 pounds of trail mix, the total cost is $2
Tresset [83]

Answer:

The jelly beans cost $2.25 / pound

The trail mix costs $1.25 / pound

Step-by-step explanation:

Let +a+ = cost/pound of jelly beans

Let +b+ = cost/pound of trail mix

(1) 6a + 2b =16

(2) 3a + 5b =13

Multiply both sides by 2  

and subtract (1) from (2)

(2) 6a -2b = -16

(1) -6a -2b = -16

8b=10

b=1.25

and

(1) 6a+2b=16

(1) +3a+b=8

(1) 3a+1.25=8

(1) +3a=6.75

(1) a=2.25

4 0
3 years ago
Please answer thiss!!!!
givi [52]

Answers:

a = 1/3

b = -6

c = 7

======================================================

Explanation:

The terms of the given expression rearrange to \frac{1}{3}x^2 - 6x+7 which is now in standard form (the exponents decrease when moving from left to right).

We can see that

a = 1/3

b = -6

c = 7

after matching that with the ax^2+bx+c form.

8 0
3 years ago
One question in a survey about what kind of cars people prefer to drive is:
Aneli [31]
<h3>Answer: C) bias</h3>

The question is biased toward mothers, and does not consider women who do not have kids. A biased question leans toward a certain group, or set of groups, of people; at the same time, other groups are left out and not represented. One way to remove the bias is to ask "Would you prefer a minivan or a convertible?".

5 0
3 years ago
Which equation best represents the line?
hram777 [196]
B because the y-int = -1 and the slope is rise / run so it would be 3/1 which equals 3 .. 3x - 1
3 0
3 years ago
Suppose 8x + 16 ice cream cones were sold on Saturday and 7x – 9 were sold on Sunday. What is the total number of ice cream cone
soldier1979 [14.2K]

Answer:

  15x +7

Step-by-step explanation:

Like terms can be combined.

  (8x +16) +(7x -9) = (8x +7x) +(16 -9) = 15x +7

The total number of ice cream cones sold was 15x+7.

4 0
3 years ago
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