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
Ray Of Light [21]
3 years ago
10

Which equations are true?

Mathematics
1 answer:
Vlad [161]3 years ago
7 0

Answer:

Step-by-step explanation:

1)4.5m+4.7=20m+47

4.5m-20m=47-4.7

-15.5m=42.2

m=-2.72

2)14+21w=7(2+3w)

  41+21w=14+21w

   21w-21w=14-41

3)49r+35=7(7r+35)

  49r+35=49r+245

 49r-49r=245-35

4)9(8h-3)=72h-27

  72h-27=72h-27

   72h-72h=-27+27

5)5.2+5.3t=10+15t

   5.3t-15t=10-5.2

    -9.7t=4.8

      t=4.8/-9.7

      t=0.49

6)6f+3.111=18f-33

  6f-18f=-33-3.111

  -12f=-36.111

     f=-36.111/-12

     f=3.01

You might be interested in
High school math help please (20 points for 3 problems, but if you could even answer 2 that would help. Please explain how you g
ipn [44]

Answer:

To question 1: van=9, bus=60

To question 2: Sorry, I don't know the answer.

To question 3: skate rental fee=$2.50, admission fee=$3.25

Step-by-step explanation:

Question 1:

Step 1 - set up equations

14v+16b=1,086

10b+13n=870

Step 2 - Solve for variable (in this case v)

10v+13b=870

Subtract 13b from both sides

10v=-13b+870

Divide both sides by 10

V=-1.3b+87

Step 3 - substitute the v in equation and solve

14 (-1.3b+87)+16b=1,086

-18.2b+1,218+16b=1,086

Combine like-terms

-2.2b+1,218=1,087

Subtract 1,218 from both sides

-2.2b=-132

Divide both sides by -2.2

B=60

Step 4 - substitute for b and solve

10v+13(60)=870

10v+780=870

Subtract 780 from both sides

10v=90

Divide both sides by 10

V=9

Question 3:

Step 1 - set up equations

5s+6f=32

5s+7f=35.25

Step 2 - solve for variable (in this case s)

5s+6f=32

Subtract 6f from both sides

5s=-6f+32

Divide both sides by 5

S=-1.2f+6.4

Step 3 - substitute for s and solve

5(-1.2f+6.4)+7f=35.25

-6f+32+7f=35.25

Combine like-terms

F+32=35.25

Subtract 32 from both sides

F=3.25

Step 4 - substitute for f

5s+6(3.25)=32

5s+19.5=32

Subtract 19.5 from both sides

5s=12.5

Divide both sides by 5

S=2.5

4 0
2 years ago
Just don't understand all of it help!!!
svlad2 [7]
You have to substitute. So like number 1 is 3+5 because the value of t is three. 2. is -2.
3. is -9.
4 is 0.
5 is -12.
6 is 24.
7 is -96.
8 is 64.
9 is 7.
10 is 2.
5 0
3 years ago
sing a cofactor expansion across the first row. Also compute the determinant by a cofactor expansion down the second column.Star
Taya2010 [7]
The answer is 32.51^-3
5 0
2 years ago
What’s the answer? To this I don’t get it help
Lady_Fox [76]

Answer:

2

Step-by-step explanation:

Hey There!

When it ask for the scale factor its asking for what did you have to multiply the side length by of figure a to get the similar side length of figure b

for example in figure A the base length is 7

to get the the base length of figure B (14) they multiplied the base length of figure A by 2

7x2=14

therefore the scale factor is 2

7 0
3 years ago
A toy car can go 5 mph. How long would it take to go 7 miles?
Radda [10]

Answer:

by the way what grade are you in? If you are more than 7th grade can you help me? brainly.com/question/16233847

35 mph

Step-by-step explanation:

7 times 5

3 0
3 years ago
Other questions:
  • 16. For quadrilateral ABCD, determine the most precise name for it. A(2,3), B (12,3), C(8,6) and D(5,6). Show your work and expl
    13·1 answer
  • Just answer number 7 you could do 8
    12·2 answers
  • If the 4th and 7th terms of a GP are 250 and 31250 respectively. Find the two possible values of a and r
    8·1 answer
  • The container that holds the water for the football team is 1/2 full. After pouring in 3 gallons of water, it is 7/10 full. How
    11·1 answer
  • Which of these is a step in constructing and inscribed regular hexagon using technology?
    8·2 answers
  • 4. Use Structure Explain why the sum x + X IS<br> equal to 2x instead of x2.
    10·2 answers
  • What is the least common multiple of 8 and 10? Enter your answer in the box. _____
    9·1 answer
  • A pot contains 25 ounces of soil. You use 4 1/4 ounces of soil to plant 1 herb. Is there enough soil in the pot to plant 5 herbs
    12·1 answer
  • Need to know the v value
    8·1 answer
  • 12. Use the geometric mean to find the 7th term in a geometric sequence if the 6th term is 8 and the 8th term is 18.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!