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
Irina-Kira [14]
3 years ago
11

I need help fast i apperciate

Mathematics
2 answers:
babunello [35]3 years ago
5 0

Answer:

d.) \frac{24}{7}

Step-by-step explanation:

using the sohcahtoa method, where tan A = \frac{opposite}{adjacent}, our opposite side is 24, and our adjacent side is 7. our hypotenuse, the longest side, is 25. therefore, we get: d.) 24/7

Roman55 [17]3 years ago
3 0

Answer:

Option d is the correct answer.

Step-by-step explanation:

tan A = 24/7

You might be interested in
Write an algebraic expression with the variable x that has a value of 3 when evaluated
kari74 [83]
X=23

(x+5) - 25 = 3?

If this is what you mean.
7 0
3 years ago
Use the commutative property for addition to rearrange the algebraic expression 5x-7y-8x+y
BartSMP [9]

You want to use the addition property, so you need to ADD each term. Just change the minuses to pluses, making sure you keep the negative with the number


5x-8x-7y+y =

5x + -8x + -7y +y

5 0
3 years ago
What is the area of a section of pavement that is 20 ft wide and 70 yd long?
myrzilka [38]

Answer:

A = 4200 ft^2

Step-by-step explanation:

We know the formula for area is

A = l*w

We need to have the same units

convert yd to ft

1 yd = 3ft

Multiply each by 70

70 yds = 210 ft

A = 210 *20

A = 4200 ft^2



6 0
3 years ago
Expression is equivalent to 486 – 9 + 6 + 33 × 2
mojhsa [17]

Answer:

  549

Step-by-step explanation:

A calculator can give you an equivalent expression.

I might work from the middle outward:

  = 486 -3 +33×2

  = 483 +66

  = (480 +60) + (3 +6)

  = 540 + 9

  = 549

7 0
3 years ago
A journal article reports that a sample of size 5 was used as a basis for calculating a 95% CI for the true average natural freq
oksano4ka [1.4K]

Answer:

Lower = 231.134- 3.098=228.036

Upper = 231.134+ 3.098=234.232

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

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".

\bar X represent the sample mean for the sample  

\mu population mean (variable of interest)

s represent the sample standard deviation

n=5 represent the sample size  

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

And for this case we know that the 95% confidence interval is given by:

\bar X=\frac{233.002 +229.266}{2}= 231.134

And the margin of error is given by:

ME = \frac{233.002 -229.266}{2}= 1.868

And the margin of error is given by:

ME= t_{\alpha/2} \frac{s}{\sqrt{n}}

The degrees of freedom are given by:

df = n-1 = 5-1=4

And the critical value for 95% of confidence is t_{\alpha/2}= 2.776

So then we can find the deviation like this:

s = \frac{ME \sqrt{n}}{t_{\alpha/2}}

s = \frac{1.868* \sqrt{5}}{2.776}= 1.506

And for the 99% confidence the critical value is: t_{\alpha/2}= 4.604

And the margin of error would be:

ME = 4.604 *\frac{1.506}{\sqrt{5}}= 3.098

And the interval is given by:

Lower = 231.134- 3.098=228.036

Upper = 231.134+ 3.098=234.232

6 0
2 years ago
Other questions:
  • (I screenshot the question and choices) (plsss help me solve this <3 )
    9·1 answer
  • I forgot how to do these questions<br> HELPPPPPP
    6·2 answers
  • Which equation can be used to find the measure of angle LJK?
    8·1 answer
  • Which expression is equivalent to the given expression using the commutative property of addition.​
    12·1 answer
  • Does anyone know how to solve these? i need help!
    15·1 answer
  • List a value of b that will cause 4x2 + bx + 25 = 0 to have one real solution
    5·1 answer
  • Find the greatest common factor of the<br> following monomials:<br> 39n3 48n2
    10·2 answers
  • Write the following numbers in order of size start with the smallest. 0.32 0.4 0.35 0.309
    11·1 answer
  • CAN SOMEONE ANSWER THIS PLEASE THANK U LOVE U
    15·2 answers
  • =−2x^2 +8 +3<br> write in vertex form
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!