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
erastovalidia [21]
3 years ago
11

Whats the missing varible for the following questions ​

Mathematics
1 answer:
marta [7]3 years ago
7 0

Answers + Explanation:

1. x + 7 =10

if you know some number + 7 is 10, you know that number must be 3.

so, x = 3

the other way you can solve this would be:

x + 7 = 10

subtract 7 from both sides of the equation

x + 7 - 7 = 10 - 7

x = 3

2. Use the same strategy:

x - 8 = -5

add 8 to both sides of the equation

x - 8 + 8 = -5 + 8

x = 3

3. x + 3 = 6

subtract 3 from both sides of the equation

x + 3 - 3 = 6 - 3

x = 3

4. x + 6 = 3

subtract 6 from both sides of the equation

x + 6 - 6 = 3 - 6

x = -3

You might be interested in
If 5 hotdogs and 15 hamburgers cost 29.50 and 10 hot dogs and 15 hamburgers cost 56.25. how much are the hot dogs and how much a
Orlov [11]

Answer:

Hotdog costs $5.35 each and hamburger costs $0.18 each

Step-by-step explanation:

The difference in price between the two is the cost of 5 hotdogs.

So, $56.25 - $29.50 = $26.50

I hotdog would cost $26.50/5 = $5.35

Substituting the cost of one hotdog,

10($5.35) + 15ham = $56.25

$53.50 + 15 ham = $56.25

15 ham = $56.25 - $53.50

15 ham = $2.75

So, 1 ham = $2.75/15

= $0.18

5 0
3 years ago
Explain why 3.6 tenths equal 36 tenths
Assoli18 [71]
I would simply solve the fraction as a division question. To divide 36 by 10, just move the decimal one place to the left. That gives you 3.6
5 0
3 years ago
Read 2 more answers
Find the equation of the line that is perpendicular to y = 2x + 8
Natasha2012 [34]

Answer:

\boxed {\boxed {\sf B. \ y= - \frac{1}{2} x-4}}

Step-by-step explanation:

We are given the line y=2x+8. It is in slope-intercept form or y= mx+b, where m is the slope and b is the y-intercept.

The slope of the line is 2.

We want to find the equation that is perpendicular. Perpendicular lines have negative reciprocal slopes.

1. Negate

  • Negate the slope, or switch the sign
  • (+) 2 --> -2

2. Reciprocal

  • Flip the numerator and denominator of the slope.
  • -2/1 --> -1/2

The perpendicular slope is -1/2, so the correct equation must be B.

6 0
3 years ago
What is 5 5/7-5 2/7 please help fast
Gwar [14]
Your answer is 3/7 because you have to go 5-5=0 and 5/7-2/7=3/7 so it is 3/7
6 0
3 years ago
Read 2 more answers
Which ordered pair is a solution of the equation?
True [87]

Answer:

Step-by-step explanation: try your best

8 0
2 years ago
Read 2 more answers
Other questions:
  • In science class, Savannah measures the temperature of a liquid to be 50∘ Celsius. Her teacher wants her to convert the temperat
    11·1 answer
  • How are integers and their opposites related? give an example with numbers.
    15·1 answer
  • Ducks unlimited helps sample duck species across the united states. Samples from one particular location for the last two years
    6·2 answers
  • a person can paint a room in 6 hours while it takes another person to 5 hours to paint the same room how long would it take them
    5·2 answers
  • What is the answer to 6²/2(3)+4
    9·2 answers
  • the population of a town increases 8% annually if its present population is 126360 , what was it a year ago
    15·2 answers
  • Subtract. Write your answer as a fraction in simplest form.<br> -83/8-101/6
    8·1 answer
  • Solve the inequality. Graph the solution. 0 &lt; −12t
    11·1 answer
  • Help meee PLEAAASEEEEEEEEEEEE
    15·1 answer
  • HAVE VERY LITTLE TIME PLS. WILL GIVE A LOT OF POINTS!!!!!!!!!!!! gabby made a scale drawing of the town library. she used the sc
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!