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
kiruha [24]
3 years ago
5

Evaluate 3a^2-5b+8 when a=-2 and b=3

Mathematics
1 answer:
iVinArrow [24]3 years ago
6 0
3 (-2)^2 -5 (3)+8
3 (4)-5 (3)+8
12-15+8
-3+8=5
Hope this helps :)
You might be interested in
The fair will be traveling to a place that uses the metric system. They received directions to their next stop, but they are in
MariettaO [177]

Answer:

2x - 0.4x ;

8x/5 ;

Yes

Step-by-step explanation:

Let number of miles = x

Arlene:

Double number of miles = 2 * x = 2x

Subtract 20% of the result :

2x - 20% of 2x ;

2x - 0.4x

Raul:

Divides Number of miles by 5 ; x / 5

Multiplies result by 8 ;

8 * (x/5) = 8x /5

To know if expressions are equivalent :

Let x = 10 miles

Using Arlene's expression:

2x - 0.4x

x = 10

2(10) - 0.4(10) = 16

Using Raul's expression :

8x / 5

(8*10) / 5

80/5

= 16

Since they give the same result, we can conclude that the expression are equivalent

5 0
3 years ago
PLS HELP HELP HELP HELP HELP
Anna35 [415]

Answer:

B 7.5

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
56 times a number minus 13 is equal to 6 less than the number.
Eddi Din [679]

Answer:

<h2>Z = 19/56</h2>

<h2>OR Z = 0.34</h2>

Step-by-step explanation:

The steps in the photo above

I hope that is useful for you :)

4 0
3 years ago
Emily bought 51 yards of fabric to make curtains,
OLga [1]
51 x3 is 153 is 153 x 12 is 22032
3 0
2 years ago
Read 2 more answers
Which ordered pair is a solution of the equation y=4x+9
Maru [420]
What are the ordered pairs
3 0
3 years ago
Other questions:
  • The radius of a circle is 5 1 2 cm. what is the circle's circumference in terms of p ?
    5·1 answer
  • Which pair of triangles can be proven congruent by SAS?
    8·2 answers
  • A firm maintains 22 cars for business purposes. From past experience, it is known that approximately 10% will require major engi
    8·1 answer
  • The high temperature for the day was 77 while the low was 52. What is the difference between the high and low temperature for th
    6·2 answers
  • 3x^2+48=0, solve the equation
    5·1 answer
  • Write and solve your own word problem for 1.3 x 2.79? solve without using a calculator
    12·2 answers
  • The table above represents what type of function?
    12·1 answer
  • I need do now this answer please
    13·1 answer
  • A salesperson earns 4% commission on furnace sales. What is the commission that the salesperson earns on the sale of $40,000 wor
    13·1 answer
  • 9m-m+3=-2(m+1) <br> this thing wants 20 characters so..HI!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!