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Black_prince [1.1K]
3 years ago
9

Solve the quadratic equation (x+2)^2=1

Mathematics
2 answers:
bagirrra123 [75]3 years ago
7 0

Answer: x = -1, -3

Step-by-step explanation:

Brrunno [24]3 years ago
7 0

Answer:

Step-by-step explanation:

Taking the square root of both sides leads to

x + 2 = ±1

which in turn comes out to  x = -2 + 1, or x = -1, and x = -2 - 1, or x = -3

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3y - 6 + 4x = 0 <br><br>A, B, C, or D​
MatroZZZ [7]

Answer:

A

Step-by-step explanation:

3 0
3 years ago
First question!!! Very simple but I don’t get it. WORTH 25 PTS
erica [24]

Answer:

if the bottom the RST equals 114 you judt need to subtract 114 from 72 and you get 42 :) sorry if it wrong

Step-by-step explanation:

4 0
3 years ago
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Does second-hand smoke increase the risk of a low birthweight? A baby is considered have low birthweight if he/she weighs less t
marishachu [46]

Answer:

Option 2) Null hypothesis: p = 0.078 , Alternate hypothesis: p > 0.078

Step-by-step explanation:

We are given the following in the question:

According to the National Center of Health Statistics, about 7.8% of all babies born in the U.S. are categorized as low birth weight.

Sample size, n = 1200

p = 7.8% = 0.078

We have to carry a hypothesis test whether national percentage is higher than 7.8% or not.

Thus, we can design the null and the alternate hypothesis

H_{0}: p = 0.078\H_A: p > 0.078

Thus, the correct answer is:

Option 2) Null hypothesis: p = 0.078 , Alternate hypothesis: p > 0.078

5 0
3 years ago
Help with this one!<br><br><br> Show steps if you can pls :)
lianna [129]

Answer:

110%

Step-by-step explanation:

just divide by 2

20/2 = 10

22/2 = 11

so x% of 10 = 11

1.10 just like the last problem

110%

4 0
3 years ago
If the measure of DEF is 65 what is the measure of DE. PLEASE HELP FAST
Wittaler [7]

EF is tangent to the circle we'll assume; otherwise there's no progress.


Call the center C. ECD is isosceles, formed from two radii and the chord.


Angle CED is complementary to DEF


CED = 90 - 65 = 25 degrees


CDE is congruent, isosceles triangle and all that: CDE=25


That leaves DCE=180-25-25=130 degrees


That's the measure of arc DE as well:


Answer: 130 degrees, choice A




8 0
3 years ago
Read 2 more answers
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