1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nuetrik [128]
3 years ago
6

HELP I NEED HELP ASAP

Mathematics
1 answer:
Vaselesa [24]3 years ago
3 0

Answer:

The answer is D

{x}^{2}  + 6x + 9 = 0 \\ x =  - 3

That's the only equation will get us one point

You might be interested in
The average systolic blood pressure was found to be 140 mm for people who have high responsibility jobs, specifically investment
defon

Answer:

t = -1.428

Step-by-step explanation:

Average blood pressure among people with high responsibility jobs = u = 140 mm

Number of people sampled for the study = n = 51

Average blood pressure of the sample = x = 139 mm

Standard deviation of the sample = s = 5 mm

The claim is that practicing yoga decreases the blood pressure. So we have to test that after practicing yoga, the average blood pressure will be lesser than 140. Based on this we can formulate the null and alternate hypothesis as:

Null Hypothesis: \mu \geq 140

Alternate Hypothesis: \mu < 140

Since population standard deviation is not known, we cannot use z-distribution for this test. We are given the value of sample standard deviation, so t-test will be used for this case.

Test statistic is calculated as:

t=\frac{x-u}{\frac{s}{\sqrt{n} } }

Using the values in this formula gives us:

t=\frac{139-140}{\frac{5}{\sqrt{51}}}\\\\ t=-1.428

Therefore, the value of test statistic is -1.428

4 0
3 years ago
What is the scale factor from figure A to figure B?
SCORPION-xisa [38]

Answer:

Figure A sides are 1/4 the size of Figure B

The top of Figure A = 4, the top of Figure B = 1.

Divide 1 by 4 to get the scale factor, which is 1/4 as a fraction or 0.25 as a decimal.

Step-by-step explanation:

3 0
3 years ago
Will give Brainly to anyone please help me ASAP
Goshia [24]

Answer:

308°

Step-by-step explanation:

It's a Reflex angle more than 180° but less than 360°.......hope this helps have a great day/night

6 0
3 years ago
Emilia took a math quiz last week. She got 19 problems correct and 76 problems incorrect. What percentage did Emilia get correct
Volgvan

Answer: 20%

Step-by-step explanation:

To find the total number of problems Emilia solved, we can first add 19 and 76 to get:

19 + 76 = 95

Next, to find how many problems Emilia got correct out of the total, we can use the number of problems correct (19) and divide it by the total number of problems (95) to get:

19 ÷ 95 = 0.2

Finally, to make 0.2 a percentage, we can multiply it by 100 to get:

0.2 X 100 = 20

Therefore, Emilia got 20% of the problems correct.

4 0
2 years ago
Which equation is this model?
Elan Coil [88]
Im not sure but I think could be

3x=0
3 0
2 years ago
Read 2 more answers
Other questions:
  • During dance practice, Sasha drank 21⁄2 pints of water, and on the way home she drank 1⁄2 cup of water. How much water did she d
    8·1 answer
  • Which decimal number is equal to 4/9
    12·1 answer
  • last week Andrew bought 3 pounds of zucchini and 2 pounds of tomatoes for $7.05 at a farm stand. This week he bought 4 pounds of
    9·1 answer
  • The table below shows the number of school absences each day.
    5·2 answers
  • Negative 2 1/3 minus negative 5
    6·2 answers
  • A sample of 56 research cotton samples resulted in a sample average percentage elongation of 8.17 and a sample standard deviatio
    11·1 answer
  • 1. Zoey took a taxi from her house to the airport. The taxi company charged a pick-up fee of $1.20 plus $3.25 per mile. The tota
    7·1 answer
  • What is the square root of –16?<br> A. –8i<br> B. –4i<br> C. 4i<br> D. 8i
    8·2 answers
  • Michael bought a shirt with 2/5 of his money. Then he bought a jacket that cost $5 more than the shirt. He spent $105 altogether
    5·1 answer
  • HURRY PLEASE!! HELP!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!