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3 years ago

0.38 · 32 12/19 − 4 7/30 ÷ 0.6=

Mathematics

1 answer:

rusak2 [61]3 years ago

3 0

Answer:

5.34 repeating

Step-by-step explanation:

The four is repeating.

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How do I solve <br><br> x² - 10x-3=0

evablogger [386]

Answer:

x = 5±2√7

Step-by-step explanation:

This quadratic cannot be factorised via the factorisation method, so we use the quadratic formula :

x = $\frac{-b + \sqrt{b^{2} -4ac} }{2a}$ or x = $\frac{-b - \sqrt{b^{2} -4ac} }{2a}$

(The reason I did 2 equations is because brainliest does not allow me to do the ± in the equation insert thing )

x = $\frac{-(-10) + \sqrt{-10^{2} -4(1)(-3)} }{2(1)}$ or x = $\frac{-(-10) - \sqrt{-10^{2} -4(1)(-3)} }{2(1)}$

x = $\frac{10 + \sqrt{100+12} }{2}$ or x= $\frac{10 - \sqrt{100+12} }{2}$

x = $\frac{10 + {4\sqrt{7}} }{2}$ or x = $\frac{10 - {4\sqrt{7}} }{2}$

x = $5+2\sqrt{7}$ or x = $5 -2\sqrt{7}$

Hope this helped and brainliest please

3 0

2 years ago

A red, a green, and a pink backback are hanging on hooks in the ckassroom. The total weight of the three backpacks is 32 pounds.

Savatey [412]

We know there are 3 backpacks. So when we add the known values 9 3/4 and 1 3/4, we get 11 1/2. So 32- 11 1/2 will give you the pink backpack weight which is 20 and 1/2 pounds.

8 0

3 years ago

Solve for a -1/4a-4=7/4a-3

ddd [48]

Add 1/4a to both sides
-4= 8/4a-3

Simplify
-4=2a-3

Add 3 to both sides
-1=2a

Divide both sides by 2
-1/2=a

Final answer: a=-1/2

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3 years ago

A video rental store charges a $20 membership fee and $2.50 for each video rented. If 15 videos are rented what is the revenue?

Rama09 [41]

67.50 divided by 2.50 = 27,
So 27 videos were rented, hope this helps!

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2 years ago

The quotient of a number and 2 is 3. Find the number.

tatiyna

Answer:

Step-by-step explanation:

6 divided by 2 is 3

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3 years ago