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
ioda
2 years ago
5

Evaluate each expression for a=7,b=4,and c=-3.

Mathematics
1 answer:
stiks02 [169]2 years ago
3 0

Answer:

Step-by-step explanation: 3a-5b= 3(7)-5(4)

                                                       =21-20

                                                       =<u>1</u>

7-3a+5a+15=7-3(7)+5(7)+15

                   =7-21+35+15

                   =-14+50

                   =<u>36</u>

15a^2-17(bc)^2=15(7)^2-17(4)(-3)^2

                         =105^2-204^2

                         =210-408

                         =<u>-198</u>

You might be interested in
John ran 1 of a mile in 8 minutes. If he continues running 2 at that speed, how long will it take him to run one mile? A) 4 minu
Verizon [17]

Answer:

d 16 minutes

Step-by-step explanation:

1 mile equals 8 minutes

2 miles equals 16 minutes

4 0
2 years ago
Pls help me! I'm confused
seraphim [82]
Just put them in order from least to greatest and find out in between which number to put them . For example put 24 between 20 and 25.

Hope that helps .
6 0
3 years ago
Read 2 more answers
the area of a roof on a house is n756 square inches. the length of the roof is 108 inches. how many inches wide is the roof?
Leno4ka [110]
 <span>Area = Length * Width 

So Width = Area/Length = 756/108 = 7 inches wide</span><span>
</span>
6 0
3 years ago
Kylie has 14 polished stones. Her friend gives her 6 more stones. Write an expression to match the words
Elis [28]
An expression is like an equation, but without an equal sign.

Therefore, you could say...

14 stones + 6 stones

or just...

14 + 6

3 0
2 years ago
Read 2 more answers
Find the outputs.. please help
morpeh [17]

Answer:

see below

Step-by-step explanation:

The steps are +2 then *4 then -8 then ÷2

Input  is 5

5 +2 =7 *4 = 28-8 = 20 ÷2 = 10     Output is 10

Input  is 9

9 +2 =11 *4 = 44-8 = 36 ÷2 = 18     Output is 18

Input  is 14

14 +2 =16 *4 = 64-8 = 56 ÷2 = 28     Output is 28

Input  is 18

18 +2 =20 *4 = 80-8 = 72 ÷2 = 36     Output is 36

Input  is 23

23 +2 =25 *4 = 100-8 = 92 ÷2 = 46     Output is 46

Input  is 7.5

7.5 +2 =9.5 *4 = 38-8 = 30 ÷2 = 20     Output is 20

Input  is 11.54

11.54 +2 =13.54 *4 = 54.16-8 = 46.16 ÷2 = 23.08     Output is 23.08

6 0
3 years ago
Read 2 more answers
Other questions:
  • Can you guys see the picture and if so what’s the right answer?
    6·2 answers
  • Which runner came in first place 8.016 or 8.16
    13·1 answer
  • What if most common factor of 42 and 15
    13·2 answers
  • What is 12 less than 18
    5·2 answers
  • 2^4. 2^5-(2^2)^2 <br> Simplify the expression
    8·1 answer
  • The dimensions of a rectangular dining room are 18 feet by 16 feet. If a scale factor of One-fourth is used to make a scale mode
    5·2 answers
  • Please help, due today
    6·1 answer
  • The diameter of a circle is 14ft. What is the circle's area?​
    15·1 answer
  • What is the difference between an expression and an equation? Answer using RAE.
    6·1 answer
  • Is that true that r is the set of counting numbers from 7 to 12 is in a roster notation​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!