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
lys-0071 [83]
3 years ago
7

How can You use mental math for 878 + 534=

Mathematics
2 answers:
antoniya [11.8K]3 years ago
6 0
Think of it like your drawing it in your head
in my head i would say 8+4=12 carry the 1 so 7+3+1= 11 carry the 1 then 8+5+ 1= 14 so the answer would be 1,412
Alex Ar [27]3 years ago
4 0

Answer:

the answer would be 1412

Step-by-step explanation: Take the '4' in 534, add it to the 878 in your head. Thus resulting in 882. Then add the 30 to this number. After adding 30, you should get 912. Then add 500, and your answer is 1412.

You might be interested in
A clothing company sells slacks that are either blue or gray and pleated or non-pleated. Last month, the company sold 5 times as
qwelly [4]

Answer:

138 pairs

Step-by-step explanation:

The number of blue pleated slacks is 5 times the number of gray pleated slacks, so:

blue\ pleated = 5 * gray\ pleated (eq1)

The number of gray non-pleated is twice the number of blue non-pleated slacks, so:

blue\ nonpleated = 2 * gray\ nonpleated (eq2)

The total number of blue slacks is 333, and the total number of gray slacks is 225, so we have that:

blue\ pleated + blue\ nonpleated = 333 (eq3)

gray\ pleated + gray\ nonpleated = 225 (eq4)

If we add (eq1) and (eq2), we have:

blue\ pleated + blue\ nonpleated = 5*gray\ pleated + 2*gray\ nonpleated (eq5)

Using (eq3) and (eq4) in (eq5), we have:

333 = 2*225 + 3*gray\ pleated

gray\ pleated = 117/3 = 39

From (eq1), we have:

blue\ pleated = 5*39 = 195

From (eq3), we have:

blue\ nonpleated = 333 - 195 = 138

3 0
3 years ago
Solve for c. a(b − c)=d
Lilit [14]
A(b - c) = d
ab - ac = d
-ac = -ab + d
ac = ab - d
ac/a = (ab - d)/a
c = (ab - d)/a

Your answer will be A. c = (ab - d)/a. Hope this helps!
6 0
3 years ago
Read 2 more answers
Which expression is equivalent to -2(5x – 0.75)?
katen-ka-za [31]

Answer:

0 - 10x + 1.5

Step-by-step explanation:

-2(5x - 0.75)

Expand the bracket

-10x + 1.5

0 - 10x + 1.5 is the equivalent expression

3 0
3 years ago
Read 2 more answers
Divide 33 photoes into 2 groups so the ratio is 4 to 7
natali 33 [55]

Answer:

12:21

Step-by-step explanation:

4 + 7 = 11

33/11 = 3

3x4=12 & 3x7=21

Therefore, ratio is, 12:21

3 0
3 years ago
Read 2 more answers
The weight of a nickel is 80% of a quarter. If a nickel weighs 5 grams how much does a quarter weigh?
muminat

Answer:

Weight of a quarter  = 6.25 grams

Weight of a dime  = 2.5 grams

Step-by-step explanation:

The weight of a nickel is  80%

The weight of a quarter  or the weight of a nickel is 5 grams or weight of a quarter =50.8 = 6.25 grams

Weight of a dime = 50% = 12 (weight of nickel) = 52 = 2.5 grams

8 0
3 years ago
Other questions:
  • Can someone help me with this question?
    14·2 answers
  • I am terrible with geometry.
    11·1 answer
  • When the smaller of two consecutive integers is added to fivefive times the​ larger, the result is 5959. find the integers?
    8·1 answer
  • An experiment consists of flipping a fair coin 4 times. What is the probability of obtaining at least one head?
    7·1 answer
  • Can someone answer my last two questions?
    15·1 answer
  • Find the amount of each payment necessary to amortize the following loan. A company borrows $84,700 for new equipment. The compa
    8·1 answer
  • Which expression is equivalent to 1/2r + 8p –3/4r – 2p?
    8·1 answer
  • Convert the decimal 0.83 to a fraction and classify it as either rational or irrational
    14·1 answer
  • How is 80.106 written in expanded form?<br> Pls answer !!
    12·1 answer
  • Heeelppp please is for today
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!