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
valina [46]
3 years ago
9

1. 7:4 = 21:x; what is the value of x? A. 12 B. 10 C. 8 D. 6 E. 4 8.

Mathematics
1 answer:
Soloha48 [4]3 years ago
8 0

Answer:

x = 12

I hope it's helps you

You might be interested in
1,500,000,000 in scientific notation
timama [110]
1.5 times 10 to the 9th
7 0
3 years ago
Read 2 more answers
A linear model for the situation below passes through the origin. Find the missing value. Round to the nearest ten if necessary.
BARSIC [14]
17.55 to buy 13 apples
4 0
3 years ago
Read 2 more answers
Use the given information to write an equation and solve the problem.<br> (28-31 in the picture)
tia_tia [17]

Answer:

28. 120 degrees

29. 30 degrees

30. 56 degrees & 124 degrees

31. 72 degrees, 108 degrees, and 18 degrees

Step-by-step explanation:

We assign variable x for the answer we are looking for (28-29).

28.

Supplement means x + y = 180 degrees. We also know x = 2y. Substitution gives us 3y = 180 degrees, so y = 60 degrees and x = 120 degrees.

29.

Complement means x + y = 90 degrees. We are given 2x = y. Substitution brings us 3x = 90 degrees, x = 30 degrees.

30.

Supplement means x + y = 180 degrees. We are told that y = 2x + 12, so we substitute. This gives 3x + 12 = 180 degrees, x = 56 degrees. Substituting that back into the equation for y, we get 124 degrees.

31.

Supplement means x + y = 180 degrees. Complement means x + z = 90 degrees.  Using our given info, we know y = 6z. We can substitute that in to get x + 6z = 180. Subtracting our second and third equations, we get 5z = 90, z = 18 degrees.  Therefore, x = 72 degrees, y = 108 degrees.

3 0
2 years ago
Read 2 more answers
Can you guys check my work pls?
alex41 [277]
Hey number 8. Be super careful, less than always look at that it should be 5n-3
3 0
3 years ago
Use &lt;, &gt; , or = to compare the following decimals.
charle [14.2K]

Answer:

0.80 = 0.8 \\ 3.4 > 3.07 \\ 0.86 > 0.85 \\ 0.86 < 10.85 \\ do \: lcm \: like \: you \: are \: adding \: \\  but \: dont \: really \: add \\ the \: highest \: numerator \: is \:  \\ greater \:

8 0
3 years ago
Other questions:
  • Ten tiles numbered 1 through 10 are placed in a bag. You randomly choose one tile. Without replacing the first tile, you randoml
    5·1 answer
  • Factor 1/2 out of 1/2z+9.
    9·2 answers
  • A rectangular piece of plastic has an area of 10 square millimeters and a perimeter of 22 millimeters. What are the dimensions o
    14·1 answer
  • (3 × 2)^2 + 6 ÷ 3 × 2
    10·1 answer
  • A real number between the square root of 13 and square root of 14
    11·1 answer
  • Hunter jogs 6 miles in 30 minutes. What is his rate?<br> What is his rate?
    15·1 answer
  • Help me I’m begging pls
    15·1 answer
  • A sales associate farms a neighborhood with 750 homes. The owners seem to list their homes every six years. How many listings sh
    8·1 answer
  • Identify the terms in the expression. (Enter your answers as a comma-separated list.)
    14·1 answer
  • I just need answers I dont need an explanation!!
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!