Determine if any are parallelplease help asap

Mathematics

1 answer:

kykrilka [37]3 years ago

7 0

B and C are parallel I will explain in comments

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Could someone please answer these ASAP. It is for ratios, rates, proportion & percent. The questions are located in the atta

riadik2000 [5.3K]

Answer:

1) r = 24

2) 10

3) 1/4 ton

4) 9.9 feet

5) 5

6) 2 meters

7) 12

8) 79%

9) 9/25

10) 21 students

Step-by-step explanation:

7 0

3 years ago

The container that holds the water for the football team is 7/10 full. after pouring out 3 gallons of water, it is 1/2 full. how

Andreyy89

Hello!

So you figure that 7/10-5/10=2/10 that leave you with 1/5 left over. So if you take that into effect, all you have to do it multiply those 3 gallons by 5. Which gives you 15. So, your answer would be 15 gallons.

I hope this helped!

I am, yours most sincerely
SuperHelperThingy

7 0

4 years ago

What is the solution for x in the given equation? The square root of 9x +7 + the square root of 2x = 7

cestrela7 [59]

Answer:

The solution is x =2 for the given equation $\sqrt{9x+7} +\sqrt{2x}=7$

Step-by-step explanation:

We need to find the solution for x in the given equation.

$\sqrt{9x+7} +\sqrt{2x}=7$

Solving:

Subtract $\sqrt{2x}$ from both sides

$\sqrt{9x+7} =7-\sqrt{2x}$

Taking square on both sides

$(\sqrt{9x+7})^2 =(7-\sqrt{2x})^2\\Using\,\, (a-b)^2 = a^2-2ab-b^2\\9x+7=(7)^2-2(7)(\sqrt{2x})+(\sqrt{2x})^2\\9x+7=49-14\sqrt{2x}+2x\\9x-2x+7-49=-14\sqrt{2x}\\7x-42=-14\sqrt{2x}\\Taking\,\,square\,\,on\,\,both\,\,sides\\(7x-42)^2=(-14\sqrt{2x})^2\\49x^2-2(7x)(42)+(42)^2= 196(2x)\\49x^2-588x+1764=392x\\49x^2-588x+1764-392x=0\\49x^2-980x+1764=0\\Using \,\,quadratic \,\, equation \,\,to \,\, find \,\, value \,\, of \,\, x \\x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\a= 49, \, b= -980 \,\,and\,\, c = 1764$