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3 years ago

The sum of a number and its square is 42. Which equation can be used to find the two numbers for which this is true?

Mathematics

2 answers:

Karolina [17]3 years ago

5 0

Answer:

x^2 + x = 42

Step-by-step explanation:

Let x = the number

Is means equals and sum means add

The sum of a number and its square is 42

x + x^2 = 42

maks197457 [2]3 years ago

5 0

Answer:

ITS A!!! x^2 + x = 42

Step-by-step explanation:

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The endpoints of EF<br> are E(1,3) and F(-2,8).<br> Find EF.

Phantasy [73]

Answer:

EF = $\sqrt{34}$ ≈ 5.83

Step-by-step explanation:

Calculate EF using the distance formula

d = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }$

with (x₁, y₁ ) = E(1, 3) and (x₂, y₂ ) = F(- 2, 8)

EF = $\sqrt{(-2-1)^2+(8-3)^2}$

= $\sqrt{(-3)^2+5^2}$

= $\sqrt{9+25}$

= $\sqrt{34}$ ≈ 5.83 ( to 2 dec. places )

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3 years ago

A plastic bin contains red, yellow, and green key chains. Out of 350 key chains, 10% percent are yellow. Of the remaining key ch

Goshia [24]

Answer:

c.126 red

Step-by-step explanation:

red+green+yellow=350

10% out of 350 are yellow

0.1 times 350=35

350-35=315

3/5 out of 315 are green

red is not green so

2/5 of what is left is red

2/5 of 315 is red

2/5 times 315=430/5=126

126 red

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3 years ago

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Heelllppp please!!!!!!!

Brums [2.3K]

Answer:

7.9

Step-by-step explanation:

area of circle equals π× 5 = 15.7

area of half of the circle equals 15.7÷2

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sergey [27]

Answer:

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Step-by-step explanation:

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3 years ago

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Eduardwww [97]

Answer:

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Step-by-step explanation:

-49-35x+x=-3x-18

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-34x+3x=-18+49

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3 years ago