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
ddd [48]
2 years ago
9

The sum of two numbers is -17. Their difference is 41. Find the numbers

Mathematics
1 answer:
Alex787 [66]2 years ago
3 0

Answer:

x = 12

y = -29

Step-by-step explanation:

Our given equations: x + y = -17 and x - y = 41

Solve for x and substitute.

x = -17 - y

(-17 - y) - y = 41

-17 - 2y = 41

2y = -58

y = -29

Solve for x using y

x + (-29) = -17

x = 12

You might be interested in
Phineas is the lead research scientist in a lab and responsible for ordering supplies and equipment. The lab is out of petri dis
IRINA_888 [86]
Is the question how long would the 185 petri dishes last because if so it would be about 15 days
Hope this helped ;)
5 0
3 years ago
Read 2 more answers
"You measure 34 dogs' weights, and find they have a mean weight of 67 ounces. Assume the population standard deviation is 13.5 o
liraira [26]

Answer:

The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.96*\frac{13.5}{\sqrt{34}} = 4.54

The lower end of the interval is the sample mean subtracted by M. So it is 67 - 4.54 = 62.46 ounches.

The upper end of the interval is the sample mean added to M. So it is 67 + 4.54 = 71.54 ounces.

The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.

7 0
3 years ago
Solve for x<br> A) 42<br> B) 40<br> C) 45<br> D) 38
alexgriva [62]

Answer:

x = 40

Step-by-step explanation:

Using similarity theorem, we have the following:

\frac{24}{24 - 15} = \frac{x}{x - 25}

Solve for x

\frac{24}{9} = \frac{x}{x - 25}

Cross multiply

24(x - 25) = x(9)

24x - 600 = 9x

Subtract 24x from each side

- 600 = 9x - 24x

- 600 = -15x

Divide both sides by -15

40 = x

x = 40

3 0
2 years ago
Terry contributes 22% of his health insurance cost. He notices that this means
fgiga [73]

Answer:

507.60

Step-by-step explanation:

42.30 X 12 = 507.60

8 0
3 years ago
The sum of 3 and 5, divided by 4
Ksivusya [100]

Answer:

2

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Two linear are parallel if and only if their slopes are
    10·1 answer
  • A rectangle is shown. The length of the rectangle is labeled 18 inches. The width of the rectangle is labeled 6 inches.
    12·2 answers
  • K/x=w+v, solve for x
    14·1 answer
  • abel drew some triangles.his drawing had 21 vertices. how many triangles did he draw?write a division equation to answer the que
    10·1 answer
  • Simplify completely.<br><br> (w15/w5)4<br><br> Enter your answer in the box.
    6·1 answer
  • Joana spins the spinner 10 times. She spins green 4 times. What is the experimental probability that Ana will spin green on the
    8·1 answer
  • I would appreciate ur help
    10·2 answers
  • If I put a different sticker on the 30th, 50th, and 60th pages will any of the first 600 pages have all 3 stickers?
    10·1 answer
  • Find the area of the triangle. Round your answer to the nearest tenth.
    7·1 answer
  • Need help answer quick plzzzz ​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!