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geniusboy [140]
4 years ago
7

-91=13n How would you work out this math problem

Mathematics
2 answers:
creativ13 [48]4 years ago
8 0

Step-by-step explanation:

Put 'n' as the subject

-91 = 13n

-91 - 13

-104 = n

Igoryamba4 years ago
7 0

Answer:

n=-7

Step-by-step explanation:

For this you can do the inverse of division which is division. So Divide -91 and 13. Which is -7.

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A positive real number is 1 more than another. When -2 times the smaller is added to the square of the larger, the result is 33.
Naya [18.7K]

Answer:

The smaller number is 4√2 and the larger number is (4√2 + 1).

Step-by-step explanation:

Let the two numbers be <em>x </em>and <em>y</em>, where <em>y</em> is the larger of the two numbers.

Since <em>y</em> is the larger number, it is one more than the smaller number. So:

y=x+1

When negative two times the smaller is added to the square of the larger, the result is 33. In other words:

-2x+y^2=33

Substitute:

-2x+(x+1)^2=33

Solve for <em>x</em>. Square:

-2x+(x^2+2x+1)=33

Simplify:

x^2+1=33

Subtract one from both sides:

x^2=32

And take the square root of both sides:

x=\pm\sqrt{32}=\pm 4\sqrt{2}

Since <em>y</em> is positive, we can ignore the negative case. So, the smaller number is:

x=4\sqrt{2}\approx5.66

And the larger number is:

y = 4\sqrt{2} + 1 \approx6.66

3 0
3 years ago
A snail is traveling at a rate of 1.5 feet per minute. Write the rate in feet per second. Write the rate in feet per hour
Luden [163]
1 m = 1.5 ft
1 sec = 0.025 ft
1 hour = 90 ft

i am a mathematics teacher. if anything to ask please pm me
3 0
3 years ago
A graph titled Position versus time for with horizontal axis time (seconds) and vertical axis position (meters). The line runs i
dlinn [17]

Answer:

-2

0

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
I need help, please solve this math problem. If you don't know the answer please don't answer. You will get reported.
Rzqust [24]

Answer:

I believe it's A 2¹²

Step-by-step explanation:

The answer lies in the question itself.

In the equation, we have

3x - y = 12.

This means 3x = 12 + y.

We have to find 8^x/2^y.

8 can be written as 2^3. Therefore, 8^x = 2^3x.

But 3x = 12 + y, hence can be replaced.

Now we have, in the fraction, 2^(12 + y)/2^y.

This can be written as 2^(12 + y - y) = 2^12.

5 0
3 years ago
Please help me with this math!
wel

Answer:

Please check the explanation.

Step-by-step explanation:

Given the polynomial function

f\left(x\right)\:=x^3+2x^2-16x-32

Let us determine the factors by solving

\:\left0\right\:=x^3+2x^2-16x-32\:

\left(x+2\right)\left(x+4\right)\left(x-4\right)=0

Using the zero factor principle:

if  ab=0\:\mathrm{then}\:a=0\:\mathrm{or}\:b=0\:\left(\mathrm{or\:both}\:a=0\:\mathrm{and}\:b=0\right)

x+2=0\quad \mathrm{or}\quad \:x+4=0\quad \mathrm{or}\quad \:x-4=0

Thus, (x+2) (x+4) and (x-4) are the factors of the polynomial function.

Therefore,

YES

  • (x+2)
  • (x+4)
  • (x-4)

And (x-2) (x+6) are not the factors of the polynomial function.

Therefore,

YES

  • (x-2)
  • (x+6)
3 0
3 years ago
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