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d1i1m1o1n [39]
3 years ago
15

Help 7th grade math need fast please

Mathematics
1 answer:
Vika [28.1K]3 years ago
8 0

Answer:

It's 4800, just multiply 60x80 bc the population is 80x larger than the sample of 100

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130 men + 156 women = 286 total
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3 years ago
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6n-3&gt;-18<br> Solve the inequality
Tamiku [17]

Answer:

<h3>n>-5/2</h3>

Step-by-step explanation:

First, you have to isolate it on one side of the equation. Remember that, isolate n on one side of the equation.

6n-3>-18

6n-3+3>-18+3 (Add 3 from both sides.)

-18+3 (Solve.)

-18+3=-15

6n>-15

6n/6>-15/6 (Divide by 6 from both sides.)

-15/6 (Solve.)

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3 0
3 years ago
A local charity is selling seats to a baseball game. Seats cost $24 each, and snacks cost an additional $6
Crazy boy [7]

Answer:

To raise exactly $240, the charity needs to sell 20 snacks.

Step-by-step explanation:

Let

s = number of seats sold

y = number of snacks sold

Seats cost $24 each, then s seats cost $24s.

Snacks cost an additional $6 each, then y snacks cost $6y.

In total, s seats and y snacks cost $(24s+6y).

The charity needs to raise $240 to consider this event a success, so

24s+6y=240

If 5 seats are sold, then

24\cdot 5+6y=240\\ \\120+6y=240\\ \\6y=240-120\\ \\6y=120\\ \\y=20

To raise exactly $240, the charity needs to sell 20 snacks.

To solve this problem graphically, plot the graph of the line 24s+6y=240 and find on this line point with s-coordinate 5. This is exactly point (5,20), so the charity needs to sell 20 snacks.

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3 years ago
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Answer: -2

Step-by-step explanation:

3x+2y=16

x+y=4 multiply by -2

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3x+2y=16  ------a

-2x-2y=-8  -------b

Add equation a and b

(3x+-2x)+(2y+-2y) = 16+(-8)

x+0=8 (y has been eliminated)

4 0
3 years ago
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What is 17- 6 11/12.
Naddika [18.5K]

Answer:

10 1/12

Step-by-step explanation:

17-6 is 11

11-11/12=

10 1/12

5 0
3 years ago
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