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snow_tiger [21]
3 years ago
15

4 b a 1. Joseph plans to give a bag of candy to each of the 22 students in his class. Each bag of candy will cost $2.87 after ta

x. Which expression gives the best estimate for the total cost of the bags of candy? A. $2 x 20 B. $2 x 30 C. $3 x 20 D. $3 x 30​
Mathematics
1 answer:
zavuch27 [327]3 years ago
6 0

Answer:

A

Step-by-step explanation:

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How many solutions does this system have?
poizon [28]

Answer:

Step-by-step explanation:

5x - y = 3.......(1)

2y = 10x+2.....(2)

Rearranging (2)

-10x + 2y = 2......(3)

Multiply equation (1) by 2

10x - 2y = 6..........(4)

Adding (3) and (4)

-10x + 10x + 2y - 2y = 2 + 6

No solution since both x and y are eliminated.

7 0
4 years ago
Solve r = 1/2m^2p for p
hoa [83]
You just have to arrange the equation such that the p is the only term at the left hand side of the equation. Express it in terms of r and m. 

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7 0
3 years ago
64 percent of the animals shelter are dogs about what fraction of the animals at the shelter are dogs
Lilit [14]
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3 0
3 years ago
Use the linear combination method to solve this system of equations. What is the value of 3x+7y=3 X-7y=1
Allisa [31]

Answer:

look at the picture shown

4 0
3 years ago
If y varies directly as x and y-21 when x<br> is 7, find x when y = -5.
klasskru [66]

Step-by-step explanation:

Since, y varies directly as x:

\therefore \: y = kx..(1) \\ (k = constant \: of \: proportionality) \\ at \: y = 21 \: and \: x = 7 \\ 21 = k \times 7 \\ k =  \frac{21}{7}  = 3 \\ plugging \: k = 3 \: in \: equation \: (1) \\ y = 3x..(2) \\ plugging \:  \: y =  - 5  \: in \: (2)\\  - 5 = 3x \\ x =  \frac{ - 5}{3}  \\   \:  \:  \:  \:  \:  \: \huge \red{ \boxed{x =  -  \frac{5}{3} }}

6 0
3 years ago
Read 2 more answers
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