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
uranmaximum [27]
3 years ago
15

I need help fast plz!!!

Mathematics
2 answers:
Liula [17]3 years ago
6 0

Answer:

26, 64

Step-by-step explanation:

we have :

angle 90°

acute angle x

acute angle 2(x+6)

The sum of the angles in a triangle has to be 180° so

90 +x+2(x+6) = 180

90 +x +2x+12 = 180

3x = 180 -90-12

x= 78/3 = 26°

the other acute angle is 2(26+6) = 64°

mezya [45]3 years ago
5 0

Answer:

26, 64

Step-by-step explanation:

We can name the first acute angle x and the second acute angle y. We know that x=2(y+6) but we also need another equation to solve the problem. Since we know that the sum of angles in a triangle is equal to 180 degrees and this is a right triangle, the two acute angles sum will be equal to 90 degrees. That would be our second equation, x+y=90. Now we can just substitute the first equation into the second one: 2(y+6)+y=90 -> 2y+12+y=90 ->3y=78 -> y=26

Now we can substitute y into one of the original equations and solve for x: x+26=90 -> x=64

You might be interested in
Simplify 9 - {x - (7 + x)}. <br><br> (a) 16 <br> (b) -2x + 2 <br> (c) -2x + 16 <br> (d) 2x + 2
Arisa [49]

Answer:

The correct answer is a) 16

Step-by-step explanation:

To find this first distribute the interior negative to both terms in the parenthesis.

9 - {x - (7 + x)}

9 - {x - 7 - x}

Now simplify the like terms.

9 - {-7}

Now distribute the negative once again.

9 + 7

And complete the indicated operation.

16

3 0
3 years ago
Read 2 more answers
Independent random samples taken on two university campuses revealed the following information concerning the average amount of
love history [14]

Answer:

p_v =P(t_{88}>6.960) =2.91x10^{-10}

So with the p value obtained and using the significance level given \alpha=0.05 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the mean of the group A is significantly lower than the mean for the group B.  

Step-by-step explanation:

The statistic to test the hypothesis is given by this formula:

t=\frac{(\bar X_A-\bar X_B)-(\mu_{A}-\mu_B)}{\sqrt{\frac{s_A^2}{n_A}}+\frac{s_B^2}{n_B}}

Where t follows a t distribution with n_1+n_2 -2 degrees of freedom

The system of hypothesis on this case are:

Null hypothesis: \mu_A \leq \mu_B

Alternative hypothesis: \mu_A >\mu_B

Or equivalently:

Null hypothesis: \mu_A - \mu_B \leq 0

Alternative hypothesis: \mu_A -\mu_B>0

Our notation on this case :

n_A =50 represent the sample size for group A

n_B =40 represent the sample size for group B

\bar X_A =280 represent the sample mean for the group A

\bar X_B =250 represent the sample mean for the group B

s_A=20 represent the sample standard deviation for group A

s_B=23 represent the sample standard deviation for group B

And now we can calculate the statistic:

t=\frac{(280 -250)-(0)}{\sqrt{\frac{20^2}{50}}+\frac{23^2}{40}}=6.511

Now we can calculate the degrees of freedom given by:

df=50+40-2=88

And now we can calculate the p value using the alternative hypothesis:

p_v =P(t_{88}>6.960) =2.91x10^{-10}

So with the p value obtained and using the significance level given \alpha=0.05 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the mean of the group A is significantly lower than the mean for the group B.  

8 0
3 years ago
Read 2 more answers
What is the value of n in the equation 8n + 7 =31
Kaylis [27]

Answer:

The answer is the third choice 3

Step-by-step explanation:

First you undo by doing the opposite 31 - 7 = 24 now we undo the 8 by undoing 24 divided by 8 is 3

3 0
3 years ago
Read 2 more answers
There are 150 marbles in 3 bags of marbles. Which of the following expresses the ratio of marbles to bags?
Kaylis [27]
The expression of the ratio is 150:3
5 0
3 years ago
Michael is preparing to plant a garden with a rectangular bed in the center and equal square beds on either side. The entire len
Marizza181 [45]

Answer:

what

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • 4.) Katrina is reading a book that has 384 pages. If she reads 12 pages a day, how many days will it
    5·1 answer
  • Solve for x please 2x -3=13​
    5·2 answers
  • Plz Help
    7·1 answer
  • An instructional video is 7.8 minutes long is the video in second ? how long is it in hours?
    14·1 answer
  • Which fraction is closest to 1/2? A number line from negative 1 to 1 in halves. 1/6 3/8 3/4 ‐1/2
    14·1 answer
  • What is the slope-intercept equation for the following line?
    12·1 answer
  • Graph: f(x) = 0.5^x- 3<br> Step 1: Calculate the initial value of the function.<br> f(0) =
    14·1 answer
  • Find sin D, sin E, cos D, and cos E. Write each answer as a fraction in simplest form.
    10·1 answer
  • Can someone solve this?
    13·1 answer
  • Can Someone Help Me Please????
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!