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
Ket [755]
4 years ago
7

Adding and subtracting rationals pls help me

Mathematics
2 answers:
frutty [35]4 years ago
7 0

Answer:

Decimal form it's. -1.5



In simplify form it's - 3/2


In convert to mixed fraction it's -1 1/2


VLD [36.1K]4 years ago
6 0

Answer:

-3/2

Step-by-step explanation:

5 1/2 - 7 can be done in a variety of ways.  One would be to convert 5 1/2 to 5.5:  then -7 + 5.5 = -1.5.

Or 5 1/2 could be converted to the improper fraction 11/2, from which 7 (converted to 14/2) would be subtracted:  11/2 - 14/2 = -3/2 = -1.5

You might be interested in
Please check these please
antoniya [11.8K]

-5x=60

The first thing we want to do is to divide -5 on both sides. We do this because -5x, is the same as -5 times x and we want to do the inverse of that.

After we divide on both sides, we get    x=60/-5

We know that 60 divided by -5 is -12.

Therefore our answer is:      x=-12

----------------------------------------------------------------------------------------------------------

5= n + 2

We always want to get the variable to be alone, so if we subtract by 5 we would be doing the opposite of getting the variable alone. Although, if we subtract by 2 on both sides, we would get the variable alone and the answer would be 3=n

Therefore our answer is:       False

----------------------------------------------------------------------------------------------------------

2(x-7)

By looking at this question, we see x being subtracted by 7. Then we see that 2 is being multiplied to that.

Therefore our answer is:        C

----------------------------------------------------------------------------------------------------------

The product of a number and 4 increased by 8

In these types of questions, it's smart to break it up. We will start with the product of a number and 4. We know that a number is a variable and if we look at the multiple choice answers we can see that the variable they chose to use is n. We also know that a product is when numbers get multiplied. So that means 4 and n get multiplied which turns into 4n.

For the other part of the problem, we know that increased by 8 means added my 8. Now that we got our answers, we put then together.


Therefore our answer is:       A    4n+8

----------------------------------------------------------------------------------------------------------

Pls give a like if this helped you!!!

4 0
2 years ago
Read 2 more answers
Share $600 between Anna and Raman in the ratio 3:7 and 1:4
Ulleksa [173]

Answer:

3 : 7 =>

Anna = $180

Raman = $420

1 : 4 =>

Anna = $120

Raman = $480

Step-by-step explanation:

<u>Shares when ratio is 3 : 7</u>

Anna : Raman = 3 : 7

Sum of ratio 10

Anna's share=

                   \frac{3}{10} \times 600 = \$  180

Raman 's share=

                  \frac{7}{10} \times 600 = \$ 420

<u>Shares when ratio is 1 : 4</u>

Anna : Raman = 1 : 4

Sum of ratio = 5

Anna 's share =

                   \frac{1}{5} \times 600 = \$ 120

Raman's share =

                  \frac{4}{5} \times 600 = \$ 480

8 0
3 years ago
A store is having a sale on walnuts and chocolate chips. For 7 pounds of walnuts and 9 pounds of chocolate chips, the total cost
Jlenok [28]

Answer:

  • Walnuts  cost $1.75, chocolate chips cost $2.75

Step-by-step explanation:

<h3>Let the costs be:</h3>

  • Walnuts - x
  • Chocolate chips - y

<h3>Set equations as per question</h3>

For 7 pounds of walnuts and 9 pounds of chocolate chips, the total cost is $37:

  • 7x + 9y = 37

For 5 pounds of walnuts and 3 pounds of chocolate chips, the total cost is $17:

  • 5x + 3y = 17

<h3>Solve the system by elimination</h3>

Multiply the second equation by 3 and subtract the first equation, solve for x:

  • 3(5x + 3y) - (7x + 9y) = 3(17) - 37
  • 15x + 9y - 7x - 9y = 51 - 37
  • 8x = 14
  • x = 14/8
  • x = 1.75

Find the value of y:

  • 7*1.75 + 9y = 37
  • 12.25 + 9y = 37
  • 9y = 37 - 12.25
  • 9y = 24.75
  • y = 24.75/9
  • y = 2.75
6 0
2 years ago
Help me with geometry​
melisa1 [442]

Answer:

What question do you need help with?

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
125/250 in its simplest form
guajiro [1.7K]
1/2 is the simplest form 
5 0
3 years ago
Other questions:
  • A newspaper started an online version of its paper 14 years ago. In a recent presentation to stockholders, the lead marketing ex
    8·1 answer
  • Write the following expression as a trigonometric function of a single angle.
    11·1 answer
  • Roger will flip a coin 3 times. which 2 events are disjoint?
    9·1 answer
  • Mr. Torres took his students to the dolphin show. Each row in the stadium had 9 seats. One adult sat at each end of a row, and e
    9·1 answer
  • Ex 9 va rog mult <br> Dau 20 de puncte.
    5·1 answer
  • Find the simple interest. The rate is an annual rate unless otherwise noted. Assume 365 days in a year and 30 days per month. Ro
    6·1 answer
  • Three interior angles of a quadrilateral have measures of 111°, 134°, and 69º. Whats the fourth angle measure?
    12·2 answers
  • 5 busses carry 325 passangers. How many passengers can be carried by 8 such busses
    11·1 answer
  • A store called Surfmania sells a $170 surfboard for 30% off. Another store, Coolwaves, sells the same surfboard but for $150, bu
    9·1 answer
  • ❗️ILL GIVE BRAINLIEST❗️
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!