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3 years ago

Someone please help me ?

Mathematics

1 answer:

Alex777 [14]3 years ago

3 0

Answer: Choice A

This is a 45-45-90 triangle so the hypotenuse is sqrt(2) times longer than the leg

hypotenuse = leg*sqrt(2)
hypotenuse = 12*sqrt(2)

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Jamal reads 5/8 page in 2/3 minutes. What is the unit rate?

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5/8 . 3/2 is 15/16
So the answer is D

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3 years ago

Quadratic Equation

Natasha_Volkova [10]

Step-by-step explanation:

The sum of ages of two friends is 13 years.

The product of their ages is 42.

Let the age of 1st friend and 2nd friend is x, y respectively.

1 st condition= The sum of ages of two friends is 13 yrs.

i.e x+y = 13........ (I)

2nd condition= The product of their ages is 42.

i.e X*y = 42........(ii)

From equation (I)

X+y = 13

or, X = 13-y........ (iii)

Putting the equation (iii) in equation (ii).

X*y= 42

(13-y) * y = 42

13y - y^2 = 42

${y}^{2} - 13y + 42 = 0$

${y}^{2} - (7 + 6)y + 42= 0$

${y}^{2} - 7y - 6y + 42 = 0$

$y(y - 7) - 6(y - 7) = 0$

$(y - 6) (y - 7) = 0$

Either; y-6 = 0

y = 6

Or;

y-7=0

y = 7

Keeping the value of y as "7" in equation (ii)

x*y = 42

7x = 42

X = 42/7

Therefore, the value of X is 6.

Therefore, either 1st friend is 6 years and 2nd is 7 years.

Hope it helps...

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2 years ago

If the farmers market sold 35% of its produce and has 280 peaches remaining, how many peaches did it have?

PSYCHO15rus [73]

100-35 = 65%

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he had 430 peaches

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2 years ago

HURRYYY!!!

Tema [17]

The last two.

They are equivalent

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2 years ago

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Step-by-step explanation:

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2 years ago