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
hammer [34]
3 years ago
10

Evaluate the following algebraic expression if a equals 3 and b equals 4 2a^+5b

Mathematics
1 answer:
Korolek [52]3 years ago
6 0
Replace a and b with their number value:

2a^2 + 5b = 2(3)^2 +5(4)
 do the 3^2 first: 3^2 = 9
 so now you have 2(9) +5(4)
 now multiply both sets of numbers: 2 x 9 = 18 and 5 x 4 = 20
 now add them:

18 +20 = 38




You might be interested in
Given 2 similar polygons with scale factor 5:7 and the perimeter of the larger polygon are 490 inches, find the perimeter of the
melisa1 [442]

Answer:

  350 inches

Step-by-step explanation:

The 7 "ratio units" represent 490 inches, so each represent 490/7 = 70 inches. Then 5 "ratio units" will represent 5×70 inches = 350 inches.

  smaller perimeter : larger perimeter

  = 5 : 7

  = (350 inches) : (490 inches)

5 0
3 years ago
Find the Slope of the line through each pair of points: (-4,11),(1,-9)
kogti [31]

Answer:

rise/run= -20/5= -4/1=-4 slope

or you sound use the slope formula (y2-y1)/(x2-x1)

(-9-11)/(1+4)

-20/5

-4

Step-by-step explanation:

6 0
2 years ago
B. Find the angle measures.<br> 7x+<br> 7<br> 9x + 12<br> 490
Lubov Fominskaja [6]
Is 7x+7 and then what. Iam confused
5 0
3 years ago
Can someone help me with number 7 and 8 pls​
Leto [7]

8.romb

Step-by-step explanation:

thats all I know

5 0
3 years ago
Read 2 more answers
Thoko deposited R300 every month into savings account from january 31,2020 until January 2022.How many.How many R300's did Thoko
Semenov [28]

Answer:

25

Step-by-step explanation:

12 months in a year

From 31 January 2020 to 31 December 2020 = 12 months

From 31 January 2021 to 31 December 2021= 12 months

include final January = 1 month

12+12+1=25

8 0
2 years ago
Other questions:
  • writing an equation of a line given its slope and y-intercept. write an equation in slope-intercept form for the line with slope
    9·1 answer
  • Graph or explain how to graph on a coordinate plane: 4x + y ≥ 4
    9·1 answer
  • Divide 33 into two groups so the ratio is 4 to 7
    14·1 answer
  • PLEASE HELP!!!
    11·1 answer
  • (Old Final Exam Problem-Sp2009) An hourglass is made up of two glass cones connected at their tips. Both cones have radius 1 inc
    10·1 answer
  • Someone please help me asap!!!!
    14·1 answer
  • What is Pi* 457363225452-485092526+2671251971947691
    14·1 answer
  • Mompoint bought a jacket on sale for 40% off at a department store. The original price was $180. Mompoint must also pay an 8% sa
    15·1 answer
  • The graph of linear functions passes through the points (10,2) and
    12·1 answer
  • 48 divided by 6 N= what?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!