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
marin [14]
3 years ago
10

Need help asap this is due in 20 min!!! i will gove brainliest too! questions 8-11

Mathematics
1 answer:
andreev551 [17]3 years ago
7 0

8. x= 7

9. x= 9

10. x= -10

11. x= -18

You might be interested in
A angles of an equilateral triangle are congruent. If x represents the measure of the third angle of the triangle, what is x?
Tatiana [17]

Answer:

D

Step-by-step explanation:

Since x is the measure of the third angle and all 3 angles are congruent then

All 3 angles have a measure of x

The sum of the 3 angles in a triangle = 180°, this

x + x + x = 180 ← is the required equation

3x = 180 ( divide both sides by 3 )

x = 60

8 0
3 years ago
What are the answers to this?
kvv77 [185]

Answer:

C and D

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Rewrite as a simplified fraction.
n200080 [17]
16/5 is roughly equal to 3.2. Is that what your are asking?
4 0
3 years ago
A woman is randomly selected from the 18–24 age group. For women of this group, systolic blood pressures (in mm Hg) are normally
Naddik [55]

Answer:

X \sim N(114.8,13.1)  

Where \mu=114.8 and \sigma=13.1

We are interested on this probability

P(X>140)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

And we can find this probability using the complement rule:

P(z>1.924)=1-P(z

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:

X \sim N(114.8,13.1)  

Where \mu=114.8 and \sigma=13.1

We are interested on this probability

P(X>140)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:P(X>140)=P(\frac{X-\mu}{\sigma}>\frac{140-\mu}{\sigma})=P(Z>\frac{140- 1114.8}{2.6})=P(z>1.924)And we can find this probability using the complement rule:

P(z>1.924)=1-P(z

8 0
3 years ago
Can someone help or show me how to simplify this equation 22.5+7(n-3.4)
Scorpion4ik [409]
<span>22.5+7 (n-3.4)=19.8n

We simplify the equation to the form, which is simple to understand
<span>22.5+7(n-3.4)=19.8n

Reorder the terms in parentheses
<span>22.5+(+7n-23.8)=19.8n

Remove unnecessary parentheses
<span>+22.5+7n-23.8=+19.8n

We move all terms containing n to the left and all other terms to the right.
<span>+7n-19.8n=-22.5+23.8

We simplify left and right side of the equation.
<span><span>-12.8n=+1.3

</span>We divide both sides of the equation by -12.8 to get n.
<span>n=-0.1015625</span></span></span></span></span></span></span>
5 0
3 years ago
Read 2 more answers
Other questions:
  • What is greater 400 centimeters or 4 centimeters
    9·2 answers
  • After completing 60 laps in a race, the runner has completed 24% of the race. How many laps does the race have?
    14·1 answer
  • Can someone please help me its a short quiz
    5·1 answer
  • Which fraction has a value that's equal to 3∕4?
    6·2 answers
  • Which one of the following statements is incorrect?
    5·1 answer
  • Find the missing number to make these fractions equal.<br><br> 3/4 = ?/8
    6·1 answer
  • HELP ME<br> HELP <br> ME<br> HELP<br> ME
    13·2 answers
  • 20 feet below sea level positive or negative?
    14·1 answer
  • Please help me for this problem.
    5·1 answer
  • Antonio buys a bag of food for his cat, Tiger. The bag weighs 3.2 pounds and costs $3.84. How much does Tiger's cat food cost pe
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!