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Igoryamba
3 years ago
12

How can you solve X^2 +2x=-1

Mathematics
1 answer:
Elena L [17]3 years ago
5 0
X(x+2)=-1

X=-1
X=-3

I’m not really sure of my answe but I tried my best so good luck!!
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La cantidad de horas h que debe dormir una persona joven de n años está dada por la siguiente expresión:
natulia [17]

Answer:

Option D doesn't make any sense.

Step-by-step explanation:

D) 7 hours of sleep correspond to an age of 19 years.

That is wrong.

If we use the expression provided

hours = 8 + 0.5*(18 -age)

hours = 8 + 0.5*(18 -19)

hours = 8 + 0.5*(-1)

hours = 7.5

8 0
3 years ago
A bag contains 20 red marbles, 8 white marbles, and 2 gray marbles. You randomly pick out a marble, record its color, and put it
SCORPION-xisa [38]

Answer:

10

Step-by-step explanation:

6 0
3 years ago
Which line is perpendicular to y=7x-3 if the perpendicular line passes through the point (7, 7)? a) y=-7x-1 b) y=-7x+8 c) y=-1/7
Norma-Jean [14]

Perpendicular lines have an opposite reciprocal slope, therefore, the slope of the perpendicular line is:

-1/7

So far, y = -1/7x + b. Now we need to plug in (7, 7) into x and y for our equation.

7 = -1/7(7) + b

Simplify the right side

7 = -1 + b

Add 1 to both sides

8 = b

The equation of the perpendicular line is:

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3 0
3 years ago
8. Jenny is getting dressed for school,
UkoKoshka [18]

Answer:

\huge\boxed{\bf\: Probability = \frac{4}{9}}

Step-by-step explanation:

According to the given information,

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Then, total pairs of pants = 2 + 1 + 2 = 5

Similarly,

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Then, total number of T-shirts = 4

This gives us the total nunber of clothing articles with Jenny, i.e.,

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Now, the probability of pulling out a pair of black pants & a blue T-shirt will be:

Total pairs of black pants + Total nunber of blue T-shirts/Total clothing articles

= 2 + 2 / 9

= 4/9

\rule{150}{2}

8 0
3 years ago
How to represent fracctions on a line
krek1111 [17]
You know the lines on a number line those can be fractions
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4 years ago
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