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lutik1710 [3]
2 years ago
9

HELP!!!!! I do not understand how to do this! Could someone please explain to me how I would solve this problem?

Mathematics
1 answer:
maks197457 [2]2 years ago
3 0
Yeah man nearly there
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Out of 30 students are surveyed 17 have a dog based on these results predict how many of the 300 students in the school have a d
zubka84 [21]
From\ proportion:\\
30\ students\ 17\ dogs\\
300\ students\ x\ dogs\\\\Cross\ multiplication\\
30x=300*17\\
30x=5100\ \ \ | divide\ by\ 30\\
x=170\\\\
There\ will\ be\ 170\ dogs\ for\ 300\ students.
5 0
3 years ago
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Suppose a man offered to work for 30 days at the following salary: one cent for the first day two cents for the second day four
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It would be to little because it would only be 30 cents
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15. Robin ordered pizza and opted for delivery.
Ivenika [448]

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Danielle needs to walk 2.5 miles. If she wants to reach her destination in 30 minutes (1/2hour), how fast does she need to walk?
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3 0
3 years ago
Can some one help me plz trying to figure out? Need help ASAP
zloy xaker [14]

Answer:

a. = -35 \\ b. = 9a + 1 \\ c. = -35

Step-by-step explanation:

a. \\  =  >  \: 7a - 1 + 2a + 2 \\  \\  =  > 7( - 4) - 1 + 2( - 4) + 2 \:  \:  \:  \:  \:  \: \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:   \:  \: (a =  - 4) \\  \\  =  >  - 28 - 1 - 8 + 2 \\  \\  =  >  - 37 + 2 \\  \\  =  >  - 35 \\  \\  \\ b. \\  =  > 7a - 1 + 2a + 2 \\  \\  =  > 7a + 2a - 1 + 2 \\  \\  =  > 9a + 1 \\  \\  \\ c. \\  =  > 9a + 1 \\  \\  =  > 9( - 4) + 1 \:  \:  \:  \:  \:  \: \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:   \:  \: (a  =  - 4) \\  \\  =  >  - 36 + 1 \\  \\  =  >  - 35

5 0
3 years ago
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