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
liq [111]
3 years ago
7

Evaluate the following expression. −8 × (−10) −7× 1/−1

Mathematics
1 answer:
GaryK [48]3 years ago
3 0

Answer:

<h2>87</h2>

Step-by-step explanation:

-8\left(-10\right)-7 \times \frac{1}{-1}=87\\\\\mathrm{Apply\:rule}\:-\left(-a\right)=a\\\\=8\times \:10-7\times \frac{1}{-1}\\\\8\times \:10=80\\\\7\times \frac{1}{-1}=-7\\\\=80-\left(-7\right)\\\\\mathrm{Apply\:rule}\:-\left(-a\right)=a\\\\=80+7\\\\=87

You might be interested in
PLEASE ANSWER<br>250 stamps if 84% of the stamps are foreign, how many other stamps did he collect
Ghella [55]

Answer:

Step-by-step explanation:

He collected a total of 225 stamps. If 88​% of the stamps he collected were​ foreign, how many other stamps did he​ collect?

4 0
2 years ago
Read 2 more answers
If the right angle triangle LMN.<br>L=30°, MN = 4cm and diagonal LM.<br>Find the LM and LN.​
Gnoma [55]
LM is 6.9 to 1dm and LM is 8
7 0
3 years ago
At noon joyce drove to the lake at 30 mph, but she made the long walk back home at 4 mph. how many hours did she walk if she was
lina2011 [118]
By definition we have the following equation:
 t = d / v
 Where,
 t: time
 d: distance
 v: speed
 For this case we have:
 d / 30 + d / 4 = 17
 Rewriting we have:
 2d + 15d = 17 (60)
 17d = 17 (60)
 d = 60 mi
 Then, the walking time is
 t = d / v
 t = 60/4
 t = 15 hours
 Answer:
 
She walked
 
t = 15 hours
4 0
3 years ago
Ben earns an annual income of $12,800 a year. The income tax he has to pay is 15%. What is the amount of income tax in dollars a
kirill115 [55]

Answer:

$

1

,

920

Explanation:

Find  

15

%

×

12800

15

100

×

12800

1

=

$

1

,

920

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Find the zero of: f(x)=5x+195
monitta

Answer:

(x + 39) or x = -39

Step-by-step explanation:

Set f(x) to 0

0 = 5x + 195

5x = -195

x = -39

4 0
2 years ago
Other questions:
  • Help with number 10 and 11
    13·1 answer
  • Scientists released 8 rabbits into a new habitat in year 0. Each year, there were twice as many rabbits as the year before. How
    13·2 answers
  • 72fl oz is how many cups
    8·2 answers
  • Factor Completely: 6x2 + 28x − 10
    11·1 answer
  • What is the value of y? Someone please help asap
    9·2 answers
  • The selling price of 3 cucumbers is $2.00
    6·1 answer
  • Evaluate the expression when c = 5 and d = 8 <br> d + 6c
    10·1 answer
  • Calculate the distance Margo rides her bike if she rides 7\8 mile each day for 8 days.
    10·1 answer
  • What is the slope of the line below?
    12·2 answers
  • Please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!