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
alisha [4.7K]
3 years ago
8

What number can you multiply by √7 to get a rational number? (select each correct answer.)

Mathematics
2 answers:
PolarNik [594]3 years ago
5 0
Answers: Choice A, choice B, and choice C

Those two values, when multiplied by the given value, will lead to a rational number. If you pick choice A, then you get 7 as a result after multiplying. If you choose choice B, then you get -7

Note that
7 = 7/1
-7 = -7/1
So 7 and -7 are rational

Also, when multiplying 0 by any number, the result is always 0. The rule is 0*x = x*0 = 0
The value 0 is rational as 0 = 0/1

The only non-answer is choice D as 7*sqrt(7) can't be expressed as a ratio of two whole numbers.
gulaghasi [49]3 years ago
4 0
<span>A) √7 is the only option.</span>
You might be interested in
After traveling 345 miles, the
vfiekz [6]
<h2>GOOD LUCK CHUCK :)))))))))</h2>
5 0
3 years ago
CAN YOU HELP ME WOTH GEOMETRY! It's due TONIGHT!
mash [69]

Answer:

look down below

Step-by-step explanation:

We know that AB = DC, and BC = AD, ∠B = ∠D because they are given

So, ΔABC ≅ ΔCDA because of SAS congruency

3 0
2 years ago
Serika has hired Tom to build her a dollhouse. The dollhouse will be a scale model of her home, and the scale will be 2 inches :
sveticcg [70]

Answer:

96 square inches

Step-by-step explanation:

The scale is 2 inches : 3 feet

Thus for 18 feet in Serika's real house, the model is 18 * (2"/3') = 12 inches

For 12 feet in Serika's real house, the model is 12 * (2"/3') = 8 inches

Area of carpeting needed in Serika's dollhouse = 12" * 8" = 96 square inches

7 0
2 years ago
Help me please solve the circled question show your work
Rasek [7]

<u>Part 1)</u> Use the fact that there are 12 inches in a foot

a) How many inches tall is a 7 foot basketball player?

we know that

1 foot=12 inches

so by proportion

\frac{12}{1} \frac{inches}{foot} =\frac{x}{7} \frac{inches}{feet} \\ \\x=12*7\\ \\x=84\ inches

therefore

<u>the answer Part 1a) is</u>

84\ inches

Part b) If a yard is a 3 feet long, how many inches are in a yard?

we know that

1 yard=3 feet

1 foot=12 inches

so

Convert 3 feet to inches

by proportion

\frac{12}{1} \frac{inches}{foot} =\frac{x}{3} \frac{inches}{feet} \\ \\x=12*3\\ \\x=36\ inches    

therefore

<u>the answer Part 1b) is</u>

36\ inches

<u>Part 2) </u>At the farmer's market two pounds of peaches cost $4.20 How much will five pounds cost?

by proportion

\frac{4.20}{2} \frac{\$}{pounds} =\frac{x}{5} \frac{\$}{pounds} \\ \\2*x=4.2*5\\ \\x=4.2*5/2=\$10.5    

therefore

<u>the answer Part 2) is</u>

\$10.5

<u>Part 3) </u>Janice mother gave her a ten dollars bill to buy five pounds each of bananas and apples at the grocery store. When she got there she found that bananas were 80 c per pound and apples were $1.40 per pound.

Did Janice's mother give her enough money? If so, should she receive any change? If not, how much more money does she need?

 we know that

<u>Find the cost of the bananas</u>

5\ pounds*0.80\frac{\$}{pounds}=\$4

<u>Find the cost of the apples</u>

5\ pounds*1.40\frac{\$}{pounds}=\$7

Sum the cost of the bananas and the cost of the apples

\$4+\$7=\$11

\$11 > \$10------> Janice's mother didn't give her enough money

She needs more money

She needs-------> \$11-\$10=\$1

therefore

<u>the answer part 3) is</u>

She needs  \$1 more


3 0
3 years ago
NEED HELP <br> WIll GIVE THE BRAINLIEST
Semmy [17]

9514 1404 393

Answer:

  B)  f(x) = 3

Step-by-step explanation:

The value in the f(x) column is always 3, so the only reasonable choice is ...

  f(x) = 3

4 0
3 years ago
Read 2 more answers
Other questions:
  • How many total gallons will they need to travel 200 more miles?
    13·1 answer
  • HELP PLEASE ASAP!!!!!!!!!!!!
    15·1 answer
  • You are standing 40 meters from the base of a tree that leans 8o away from you. The angle of elevation from you to the top of th
    5·1 answer
  • In a transformation each point in the object is mapped to another point in the image. The following are the four types of transf
    13·1 answer
  • 44 88 88 66 22 99 88 77 99 66 99 55 22 66 22 99 88 77 77 99 ​(a) minequals= 22 ​(simplify your​ answer.) upper q 1 equalsq1= not
    6·1 answer
  • What is the surface area?<br> 1 mm<br> 7 mm<br> 3 mm<br> square millimeters
    5·1 answer
  • You have a new 10-day workout routine. You want to do 10 sets of 10 sit-ups each
    6·2 answers
  • 2) Solving an equation - using the distributive property and inverse operations to solve 4/5
    12·1 answer
  • If f(x) = 0, what is x?
    5·1 answer
  • Show work please and no links
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!