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PSYCHO15rus [73]
3 years ago
12

Pleaseee helppp answer correctly !!!!!!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Karolina [17]3 years ago
8 0
I’m pretty sure it’s just 30
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15n + 24 - 4(n - 3) + 6 - 2n = 105
elena55 [62]

Just trying to win the CONTEST BUT GOOOOD LUCK

7 0
3 years ago
Read 2 more answers
No links, I just need an explanation on how to do this, like step by step because I don't understand. T-T
Goryan [66]

Answer:

a. Jared and Ali

Step-by-step explanation:

b. Molly make mistake when he/she divide all equation by 4 but left the 8x remain 8x, it should be 2x.

Mark make mistake in changing the sign whitout changing side/ passing trough equal sign. FYI, + can be - and also - can be + if they move to the other side

i.e.

2 + 3 = 5

2 = 5 - 3

7 0
2 years ago
A woodworker makes wooden checkerboards. her profit is a function of the price she charges. this graph shows her total profits,
pantera1 [17]

Answer:

Option B.

Step-by-step explanation:

Remember that the profit is defined as the difference between the revenue and the cost.

So, having a profit y = 0 means that the woodworker did not win nor lose anything.

Then the zeros of the function, the values of x such that the graph intersects the x-axis, are the prices such that she does not win nor loss anything.

In the graph we can see that the zeros are at:

x = 15 (the first one)

x = 70 (the second one)

so the zeros are at x = 15 and x = 70, and these are the prices such that the profit is zero, so at these prices she does not make nor lose money.

The correct option is B.

8 0
2 years ago
6. The expected life of a calculator varies inversely with the amount of times a student
loris [4]

9514 1404 393

Answer:

  250 days

Step-by-step explanation:

If the number of drops increases by a factor of 20/8, the expected life will decrease by the inverse of that factor: 8/20.

The expected life is (8/20)(625 days) = 250 days.

6 0
3 years ago
4/5-11/15 can you help me?
Ainat [17]

Answer:

\frac{1}{15} is the answer.

Step-by-step explanation:

\frac{4}{5} - \frac{11}{15}

Change the denominators to 15.

\frac{12}{15} - \frac{11}{15}

12 - 11 = 1.

= \frac{1}{15}

5 0
2 years ago
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