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
adell [148]
3 years ago
15

Giovanni justifies whether the expression –4x – 8 is equivalent to Negative 2 (x + 1) minus 2 (x + 3) by letting x = 3 in both e

xpressions. What is the value of each expression when x = 3? 3 and –20 4 and 4 –20 and –20 3 and 4
Mathematics
2 answers:
Vladimir [108]3 years ago
6 0

Answer:

When x = 3, the solutions to the expressions are–20 and –20

Step-by-step explanation:

–4(3) – 8   Multiply

-12 - 8       Subtract

-20

-2(3 + 1) - 2(3 + 3)     Simplify in the parentheses

-2(4) - 2(6)                 Multiply

-8 - 12                        Subtract

-20

               

shutvik [7]3 years ago
4 0

Answer:

its C -20 and -20

Step-by-step explanation:

just did the quiz got 100%

You might be interested in
Help please! I’m giving brainliest to however gets this question right.
Arisa [49]

Answer:

They both have area 4

Step-by-step explanation:

Area of the square:

base*height = 2 * 2 = 4

Area of the triangle:

Using the left-side of the triangle as the base, and the height from the left-side to the bottom-right corner:

\frac{1}{2}base*height

\frac{1}{2}4\sqrt2*\sqrt2=4

We know the length of the diagonal is \sqrt2 as we are using a centimetre grid, so we can create an isosceles triangle with side lengths 1 and our unknown length, we can then use Pythagorean Theorem to work out our unknown side length.

a^2+b^2=c^2

1^2+1^2=c^2

2=c^2

\sqrt2=c

7 0
3 years ago
Abbi has $400 in $5 bills. If she has 38 bills, how many of them are $20?
Sergio039 [100]
F=5 dollar bills
t=twent dollar bills

38 total bills
f+t=38

400 in bills
400=5f+20t

we have
f+t=38
5f+20t=400
multipy first equation by -5 and add to second equation

-5f-5t=-190
5f+20t=400 +
0f+15t=210

15t=210

divide both sides by 15
t=14

subsitute
t+f=38
15+f=38
f=23


23 five dolar bills
15 twenty dollar bills
3 0
3 years ago
Read 2 more answers
There is 12 feet from the center of the room to the wall. How big is the floor? (JUST write the number: no units) *
pogonyaev

Answer:

im gonna say 24

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
What's the number before 277000​
FinnZ [79.3K]

The number is 276999

5 0
2 years ago
The red line below is parallel to which of the following?
horrorfan [7]

Answer:

option A

Step-by-step explanation:

X- axis

4 0
2 years ago
Read 2 more answers
Other questions:
  • HELP PLEASE
    12·2 answers
  • Finding terms of an arithmetic sequence with a recursive formula <br><br>a1 =12 an= an-1+7
    11·1 answer
  • Use the zero product property to find the solutions to the equation (x + 2) (x + 3) = 12.
    5·1 answer
  • What is 2.85 to the nearest tenth?
    13·2 answers
  • Students rented buses and vans to go to a hockey game. There were 8 vans and 12 buses for 360 students.
    9·1 answer
  • PLEASE HELP QUICK!!!!!! WILL GIVE BRAINIEST!!!!!!!
    10·1 answer
  • The temperature in a chemical reactor was measured every half hour under the same conditions. The results were 78.1°C, 79.2°C, 7
    12·1 answer
  • WILL MARK YOU BRAINLIEST
    15·1 answer
  • Find the dimensions of the circle. Check your answer, <br> Area = 36π m^2<br><br> Please help!
    5·1 answer
  • Complete the table for y= -x-2
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!