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
scoray [572]
3 years ago
6

Simplify the radical expression. √45 + √20 - √5

Mathematics
1 answer:
viva [34]3 years ago
5 0
√45 = √9√5 = 3√5
√20 = √4√5 = 2√5

3√5+2√5-√5=4√5

answer = 4√5
:)
You might be interested in
US average math SAT scores follow a normal distribution with a mean of 505 and a standard deviation of 112. A sample of 64 enter
Hitman42 [59]

Answer:

The claim that the scores of UT students are less than the US average is wrong

Step-by-step explanation:

Given : Sample size = 64

           Standard deviation = 112

           Mean = 505

           Average score = 477

To Find : Test the claim that the scores of UT students are less than the US average at the 0.05 level of significance.

Solution:

Sample size = 64

n > 30

So we will use z test

H_0:\mu \geq 477\\H_a:\mu < 477

Formula : z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

z=\frac{505-477}{\frac{112}{\sqrt{64}}}

z=2

Refer the z table for p value

p value = 0.9772

α=0.05

p value > α

So, we accept the null hypothesis

Hence The claim that the scores of UT students are less than the US average is wrong

3 0
3 years ago
Jireh flew his crop duster from the ground to an altitude of 3,500 feet. He continued to fly at that height for 20 minutes until
exis [7]

Answer: Jireh flew his crop duster from the ground to an altitude of 3,500 feet.

Step-by-step explanation:

That is an example of an increasing interval.

7 0
2 years ago
Read 2 more answers
a truck can be rented from company a for $90 a day plus $0.40 per mile. company b charges $50 a day plus $0.80 per mile to rent
Neporo4naja [7]
101 miles.
truck A $130.4
truck B $130.8
7 0
3 years ago
When dividing 82 by 43, Linda estimated the quotient to be 2. Examine Linda’s work, and explain what
Vanyuwa [196]

Answer:

82/43 = 1 and 39/43

Step-by-step explanation:

When dividing 82 by 43 , the operation follows;

82/43 = 1 and 39/43

This means the quotient is 1 and reminder is 39

However;

82/43 = 1.907 ------nearest whole number is 2.

so the quotient can be approximated to the nearest whole number as 2.

8 0
3 years ago
A building has a ramp to its front doors to accommodate the handicapped. If the distance from the building to the end of the ram
bija089 [108]
<span>The ramp forms a right triangle with legs 5 and 22. 
 Find the length of the hypotenuse using the Pythagorean theorem,
 c=raiz((5)^2+(22)^2)=</span><span> <span>22.56 ft
 Answer
</span></span> the ramp is 22.56 ft long. 
7 0
3 years ago
Other questions:
  • Tobie Invest $25 in a bank account where the interest is compounded at 4% every year. He makes no withdrawals or deposits. the f
    11·2 answers
  • PLEASE HELP IM SO STUCK 20 POINTS
    10·1 answer
  • What is the solution set of 4x=y and 2x^2-y=0
    9·1 answer
  • Idk geometry so.. help pls
    13·2 answers
  • Subtract 11b^2-4b+7 from b^2+8b-9
    6·1 answer
  • $2.00 to $4.50. By what percent did the price increase
    6·1 answer
  • Tell whether x and y show direct variation. Explain your reasoning. x=y+2
    15·1 answer
  • 1 a) A random sample of 25 was drawn from a normal distribution with a standard deviation of 5. The sample mean is 80. Determine
    13·1 answer
  • Do Now
    15·1 answer
  • A. -3 <br> B. -1/3<br> C. 1/3 <br> D. 3
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!