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puteri [66]
3 years ago
15

Eight less than 7times a number is -29

Mathematics
1 answer:
Alona [7]3 years ago
3 0
7n-8=-29
You got the equation correct. 
I'm not sure if you want me to solve n but I'll do it in case you need help on that.
First, add 8 on both sides which would equal 7n=-21.
Now, divide 7 on both sides.
n=-3
Hope this helps
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I need an answer to this question
solmaris [256]
Let me try it now and l will give u the response
8 0
4 years ago
An airline finds that if it prices a cross-country ticket at $200, it will sell 300 tickets per day. It estimates that each $20
olya-2409 [2.1K]

We can write that as a function:

f(n)=(200 -20n) * (300 + 50n)\\f(n)=60000+10000n-6000n-1000n^2\\f(n)=-1000n^2+4000n+60000\\

where n is the number of price reductions. We can see that it is a quadratic function which has the biggest value at P = (p, q). It means that p is the number of reductions which results in the biggest profit.

p=\frac{-b}{2a}=\frac{-4000}{-2000}=2

It means that it's the best to make 2 price reductions for the company. The tickets should be sold for $200 - 2 * $20 = $160. It results in 2 * 50 more tickets sold which is 300 + 100 = 400.

Answer:

Ticket price: $160

Number of tickets: 400

6 0
3 years ago
Hiyaa there ;)
ycow [4]

Originally, the diameter was 110 m, so the radius was 55 m. To get the area, you square the radius and multiply by π. That's 55^2 * π, making the original area 3025π m^2.

After, the diameter decreased to 107 m, making the radius 53.5 m. Again, you square the radius and multiply by π, making the new area 2862.25π m^2.

Subtract the 2862.25π from 3025π, giving you a total reduction of 162.75π square meters.

Rounded to the nearest hundredth, that's 511.29 square meters.

5 0
3 years ago
Graphing/Slopes (Easy points!!) (ASAP) (URGENT) (Please check my other questions)<br><br>​
spin [16.1K]

Answer:

The statement is incorrect because an inverse relationship between y and x would imply that the graph would be a downward curved graph whose slope changes rather than linear which has constant slope  (see image).

Best to express this situation as:
There is a linear relationship between y and x with a negative constant slope. The keyword here is constant since the slope is the same in a linear relationship

Step-by-step explanation:

An inverse relationship exists between y and x when y is proportional to the reciprocal of y

This would be expressed in the form y ∝ \frac{1}{x}

As x decreases , y increases or vice-versa. It is often expressed in equation form as y=\frac{k}{x}  or y = kx^{-1}   where k is a constant and  whose graph is curved in nature. The slope is changing for the range of x values not constant as would be the case for a linear graph

All we can say about the data is that there is a linear relationship between y and x  with a negative constant slope

4 0
2 years ago
If 3t-7=5t, then 6t=<br><br><br> Whyyyy? I need help with being explained why it's -21....
Alex17521 [72]

Just relax, breathe deeply from the diaphragm, allow the
cleansing air to fill your brain, and take it one step at a time.

You said that                         <u>3t - 7  =  5t

</u>OK.  Fine.
Let's just find out what  <em>6t</em>  is.

Subtract 3t from each side:         -7 = 2t

Multiply each side by  3 :          <em>-21 = 6t

</em>
Did I go too fast for you ?<em>

</em>
8 0
3 years ago
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