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
Katyanochek1 [597]
2 years ago
5

Find - 7.8 + (- 12) + (-82.3). O 102.1 O – 102.1 0 -91.3 O-62.5

Mathematics
1 answer:
Fantom [35]2 years ago
7 0

Answer:

-102.1

Step-by-step explanation:

When adding negative numbers, act as if you are subtracting that same number, but in its positive form.

So in reality, you could rewrite the equation as: (-7.8) - 12 - 82.3 = -102.1

You might be interested in
Is 4/6 greater than,less than,or equal to 9/12
prohojiy [21]


4/6=2/3

9/12=3/4

2/3 <3/4

4 0
3 years ago
Read 2 more answers
Mrs. gonzalez bought centerpieces to put on each table at a graduation party. she spent $31.50. there are 8 tables each requirin
Naddik [55]
6*4.25+2*3=31.50
6 vases and 2 candles
4 0
3 years ago
The sum of three numbers is 10. Two times the second number minus the first number is equal to 12.
eimsori [14]

<u>Answer:</u>

-10,1,19

<u>Step-by-step explanation:</u>

<u></u>

x+y+z = 10 (Equation 1)

2y-x= 12  (Equation 2)

x-y+2z = 7 (Equation 3)

(Equation 2): -x = -2y+12

                       x = 2y-12 (Equation 4)

(Equation 1) - (Equation 3): 2y-z = 3

                                              -z = -2y+3

                                               z = 2y-3 (Equation 5)

Substitute (4) and (5) into (1)

x+y+z = 10

(2y-12)+y+(2y-3) = 10

5y-15 = 10

5y = 5

y=1

Substitute y=1 into (2)

2y-x= 12

2(1)-x= 12

2-x= 12

-x= 12-2

-x= 10

x= -10

Substitute y=1 and x=-10 into (1)

x+y+z = 10

-10+1+z = 10

z-9 = 10

z = 10+9

z = 19

Order: x = -10, y = 1, and z = 19

8 0
3 years ago
Read 2 more answers
How do I do surface area
umka2103 [35]
For what shape??
pls answer, then we can get somewhere with this question!! :)
3 0
3 years ago
Read 2 more answers
Two vehicles, a car and a truck, leave an intersection at the same time. The car heads east at an average speed of 70 miles per
forsale [732]

Step-by-step explanation:

[70,30] = 210 miles per hour

5 0
3 years ago
Other questions:
  • Colton has 32 blue marbles and 24 white marbles. If he wants to put them in identical groups without any left over, what is the
    7·2 answers
  • A milk container's capacity is one gallon. How many cups would be equal?
    12·2 answers
  • Help please<br><br><br> asap!!!!
    6·2 answers
  • How to solve thus through substitution method. please do it step by step
    11·2 answers
  • Two tanks are being filled. Tank 1 is being filled at a rate of 3/4 gallon per 2/3minute
    9·1 answer
  • The length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with me
    5·1 answer
  • Reduce to the simplest form<img src="https://tex.z-dn.net/?f=%5Cfrac%7B286%7D%7B858%7D" id="TexFormula1" title="\frac{286}{858}"
    7·1 answer
  • A. 7/3 <br> B. 3/7<br> C. -3/7 <br> D. -7/3
    15·1 answer
  • HELp meh with this question it very hard
    10·1 answer
  • What is the median of the data set: {24, 31, 12, 38, 12, 15}A)12B)19.5C)24D)23.5
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!