3 years ago

Help me plz I’ll give 20 points

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

3 0

Answer:

i research and find the answer

Step-by-step explanation:

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10. What is the value of x?

Mars2501 [29]

Answer: 30

Step-by-step explanation:

Since this is a right triangle, the pythagorean theorem says

$x^2 + 16^2 = 34^2$

So if you rearrange for $x$ you get

$x = \sqrt{34^2 - 16^2} = \boxed{30}$ .

4 0

3 years ago

A chemist has one solution that is 60% alcohol and another that is 35% alcohol. How much of each must she use to make 15 liters

vivado [14]

Let x represent the total amount litters of solutions for 60% alcohol
15-x represent the total amount of litters of solutions for 35% alcohol, so:
0.6(x)+0.35(15-x)=0.5(15)
0.6x+5.25-0.35x=7.5
0.25x+5.25=7.5
Subtract 5.25 to each side
0.25x+5.25-5.25=7.5-5.25
0.25x=2.25
Divided 0.25 to each side
0.25x/0.25=2.25/0.25
x=9 liters
15-x
=15-9
=6 litters. As a result, she must use 9 litters of 60% alcohol and 6 litters of 35% alcohol to make 50% alcohol. Hope it help!

3 0

4 years ago

Answer plz ……………..plzplzplzplz

dalvyx [7]

Answer:

it is the first answer "A"

first and last term have to be negative

middle term a positive 17 and have $a^{2} s$ in the middle