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
Svetradugi [14.3K]
3 years ago
14

10.x / 2-5 = 3 i need help with this

Mathematics
1 answer:
Dmitry [639]3 years ago
7 0
X=-9/10 I believe I hope this helps have a nice day!
You might be interested in
You have 42 oz of egg noodles. You need 5 oz to make one serving of chicken noodle soup. How many servings can you
GenaCL600 [577]

Answer:

8 servings

Step-by-step explanation:

Take the total ounces and divide by the number of ounces per serving

42/5 =8.4

Round down since we don't want to short someone on their soup

8

4 0
2 years ago
How would you describe the correlation in the data? Explain your reasoning. (2 points).
ANTONII [103]

Answer:

Hi

Step-by-step What is a linear function in the form y= mx + b for the line passing through (4.5, -4.25) with y-intercept 2.5 yup help pleade

5 0
2 years ago
It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken if the desir
Ksju [112]

Answer:

We need a sample size of at least 75.

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, we find the margin of error 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.

The standard deviation is the square root of the variance. So:

\sigma = \sqrt{484} = 22

With a .95 probability, the sample size that needs to be taken if the desired margin of error is 5 or less is

We need a sample size of at least n, in which n is found when M = 5. So

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

5 = 1.96*\frac{22}{\sqrt{n}}

5\sqrt{n} = 43.12

\sqrt{n} = \frac{43.12}{5}

\sqrt{n} = 8.624

(\sqrt{n})^{2} = (8.624)^{2}

n = 74.4

We need a sample size of at least 75.

6 0
3 years ago
Read 2 more answers
What percent of $90 = $45
Lynna [10]
45 is exactly half of 90
that means 45 is 50% of 90.
8 0
3 years ago
The quantity q varies inversely with the square of m and directly with the product of r and x. When q is 2.5, mis 4 and the
saveliy_v [14]

Answer:

The constant of proportionality is 5.

Step-by-step explanation:

If the quantity q varies inversely with the square of m and directly with the product of r and x, then the variation equation is

q=k\frac{rx}{m^2}

When q=2.5, m= 4 and the

product of rx = 8.

We plug in this values to get;

2.5=k(\frac{8}{4^2})

2.5=k(\frac{8}{16})

2.5=\frac{1}{2}k

Multiply both sides by 2

k=2.5\times 2=5

The constant of proportionality is 5.

7 0
3 years ago
Read 2 more answers
Other questions:
  • There are 26.2 miles and a marathon write the number of miles using a fraction
    14·2 answers
  • The loudness, L , of a sound (measured in decibels, dB) is inversely proportional to the square of the distance, d , from the so
    12·1 answer
  • PLEAS HELP ME :) (Above)
    9·2 answers
  • Can someone please help
    13·1 answer
  • 118<br> 154<br> 131<br> 112<br> solve for x
    14·1 answer
  • I don’t think you really see it but if you can please help me I’m to lazy
    14·1 answer
  • Plz Help me answer this question
    13·2 answers
  • H e l p !!!!!! D;<br><br><br><br><br><br><br>will give brainlies t
    13·2 answers
  • The hypotenuse of a right triangle is 5 meters longer than one of its legs. The other leg is 6 meters. Find the length of the ot
    12·1 answer
  • Chris is opening candy store. He is charging $4 for a small box of candy and then $1.25 for each additional box. What is the slo
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!