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
pishuonlain [190]
3 years ago
9

Evaluate the expression. -7- (-6) + 4 a. 5 b. 3 c. -17 d. -9

Mathematics
1 answer:
Westkost [7]3 years ago
4 0

4(5) + 5(6) - (-4/-2)

.

just to help keep the signs straight, but there is nothing wrong with the way you did it.

.

Now you can just start simplifying ... term by term. Multiply the 4 times the 5 and you get:

.

20 + 5(6) - (-4/-2)

.

Then multiply the 5 times the 6:

.

20 + 30 - (-4/-2)

.

Next divide the terms in the parentheses. -4 divided by -2 is +2 and you have:

.

20 + 30 - (+2)

.

When you remove parentheses preceded by a minus sign, you change the signs of the terms

inside the parentheses. So - (+2) becomes -2 when the parentheses are taken out and the

expression becomes:

.

20 + 30 - 2

.

Now add the three terms and the result is +48

.

Hope this clarifies the problem for you. Good job ...

.

You might be interested in
What 2 fingers should you use to properly check your pulse?
lesya692 [45]

Your middle finger and index/pointer.

8 0
3 years ago
Read 2 more answers
If you multiply 1m times unlimedted what will u get
hjlf

Answer:

∞

simple and correct answer, infinite!

✌️:)

3 0
3 years ago
Read 2 more answers
Pls help me<br><br> macth the words with the defonitions\ math
Orlov [11]

Answer:

Do what the 6th grader said

Step-by-step explanation:

They smart

4 0
2 years ago
Read 2 more answers
What equation best models this data? (Use y to represent the population in millions, and t to represent the year, assuming that
lapo4ka [179]

Answer:

y = 2.31x + 309.35

Step-by-step explanation:

Whenever you are checking for a best fitting equation you want to check if it has a constant slope.  If it does then the relation is linear and super easy.

So, since the t values are increasing by the same amount you want to see if the y values are  too.  And they are, each population entry is increasing by 2.31, this is the slope.  

Also, keep in mind you can caluclate slope with the equation \frac{y_2-y_1}{x_2-x_1}  here x is replaced by t though.

Now, since we know it's linear and we know the slope we can find the equation with the formula  y - y1 = m(x - x1) where again, x is replaced by t and m is the slope 2.31

I am just going to use the first point.  so x1 = t1 = 0

y - 309.35 = 2.31(x-0)

y = 2.31x + 309.35

Let me know if there was something you didn't understand.  

5 0
3 years ago
2y =17383 what is 2y please answer
aleksandrvk [35]
2y is 2y, so it is equal to 17383.
IF you were looking for just y, than the answer is 17383/2 = y = 8691.5
3 0
2 years ago
Read 2 more answers
Other questions:
  • Write each power as a product of factors <br><br> 2^4<br> 4^2<br> 9^2<br> 8^5<br> 5^3<br> 7^3
    11·1 answer
  • What is the sum of 5-(-7)=5+7
    7·2 answers
  • A subcommittee is randomly selected from a committee of eight men and seven women. What is the probability that all three people
    15·1 answer
  • I need help with this problem. Given: BC = 10 inches AC = √50 inches m∠CBD = 60° m∠CAD = 90° Calculate the exact area of the sha
    11·1 answer
  • 27^{3x}=(1/9)^x<br> write in b^x=b^y form
    6·1 answer
  • The formula I = PRT where I = Interest, P = principal, R = rate, and T = time is used to calculate the amount of simple interest
    11·2 answers
  • The diameter of a bacterium called Spiral is 0.000015 meter. What is this
    12·1 answer
  • Which linear inequality best represents the graph shown?
    5·1 answer
  • HELLLLLPPPPP: ANSWER CHOICES BELOW:
    14·1 answer
  • Please help me.. there is a image
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!