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3 years ago

12 customers entered a store over the course of 8 minutes. At what rate were the

Mathematics

2 answers:

lapo4ka [179]3 years ago

6 0

Answer:

1.5

Step-by-step explanation:

I divided 12 by 8 and got 1.5. I hope this is right and helps!

scoundrel [369]3 years ago

5 0

Answer:

3 to 1

Step-by-step explanation:

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Please help fassssst

Zarrin [17]

Answer:

$\dfrac{9}{2}$

Step-by-step explanation:

You can do this using the quadratic equation:

$x =\dfrac{-b\pm\sqrt{b^{2}-4ac}}{2a}$

Let's first setup our expression:

4x² + 12x = 135

the quadratic formula is:

ax² + bx + c = 0

4x² + 12x - 135 = 0

Then:

a = 4

b = 12

c = -135

Now we plug in our coefficients and solve:

$x =\dfrac{-12\pm\sqrt{12^{2}-4(4)(-135)}}{2(4)}$

We solve for both to determine the positive one:

$x =\dfrac{-12+ \sqrt{12^{2}-4(4)(-135)}}{2(4)}$ $x =\dfrac{-12- \sqrt{12^{2}-4(4)(-135)}}{2(4)}$

$x =\dfrac{-12+ \sqrt{144+2160}}{8}$ $x =\dfrac{-12- \sqrt{144+2160}}{8}$

$x =\dfrac{-12+ \sqrt{2304}}{8}$ $x =\dfrac{-12- \sqrt{2304}}{8}$

$x =\dfrac{-12+ 48}{8}$ $x =\dfrac{-12- 48}{8}$

$x =\dfrac{36}{8} = \dfrac{9}{2}$ $x =\dfrac{-60}{8} = \dfrac{-15}{2}$

So if you are looking for a positive solution, just take the positive one as x.

8 0

3 years ago

GUYS PLEASE HELP, 1 MILLION POINTS!!!

Salsk061 [2.6K]

Answer:

True

Step-by-step explanation:

8 0

3 years ago

Alguien me ayuda porfiss

zimovet [89]

Answer:

Step-by-step explanation: a, c, and e

4 0

3 years ago

Answer these questions please:

Anastaziya [24]

Answer:

Step 1, 4=3(d+1)-5 should be 4=3d+3-5

Step-by-step explanation:

4 0

3 years ago

What is the approximate value of √65?

Juliette [100K]

Sq root of 64 =8 so sq root of 65 must be just a little larger than 8
<span>Therefore answer is between 8 & 9

</span>

6 0

3 years ago