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
tankabanditka [31]
3 years ago
7

If a=2,b=-1,c=-3 and d=-2.find the value of 7a2-3ac+d2​

Mathematics
1 answer:
hram777 [196]3 years ago
3 0

Answer:

42

Step-by-step explanation:

It's just a distribution property where the given value of each variables (a, b, c, d) are being distributed to the given equation:

7a2-3ac+d2

7(2)(2) - 3(2)(-3) + (-2)(2)

28 + 18 - 4 = 42

You might be interested in
② The complement of an<br> angle. is 10 more<br> than 3 times the<br> angle. Find both
Mrac [35]
Let x be the angle. The complement is 3x + 10. The sum of two complementary angles is 90. So,
x + 3x + 10 = 90
4x + 10 = 90
4x = 80
x = 20
Plug x into the complement
3(20) + 10 = 70

The angle is 20 degrees and the complement is 70 degrees

4 0
3 years ago
What is the sum of the arithmetic series below?
Irina-Kira [14]
Hello : 
the common ratio is r = -95-(-100)=5
the general terme is : un= u1+(n-1)r
un = -100 +(n-1)(5)
un =-100 +5n-5
un = 5n-105
The last term is : 100
un =100
5n-105 = 100
5n =205
n = 41 (Number of terms)
The last term is : u 41
<span>the sum is : S= (41/2)(-100+100)=0</span>
5 0
3 years ago
Help me please need ASAP
yanalaym [24]

Answer:

1

i belive

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Is 70x8=490 pls answer
Anna71 [15]

Answer:

No

Step-by-step explanation:

70 * 8 = 560, not 490

Instead, 70 * 7 = 490

4 0
3 years ago
Read 2 more answers
You put $643 into an investment at 3% for one year. What will the balance (total amount) be
baherus [9]

Answer:

$662.29

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Could some one help me with this problem? 13 - 8.1 =
    7·2 answers
  • A What is the median number for the numbers 4, 8, 10, 5, 9?*
    11·1 answer
  • Write the word sentence as an equation. Then solve.<br><br> A number x multiplied by 25 is 320.
    11·1 answer
  • HELP!!!!!!!!!!!!!!!!!!!!!!!!
    8·1 answer
  • If someone takes your food is it still sharing ​
    13·2 answers
  • Help me please!!!!!!!!!
    5·1 answer
  • 6th grade math easy work
    13·1 answer
  • I need help please giving brainlest which statement accurately describes the scatter plot
    10·1 answer
  • Draw a Picture Elise paints 12 stars on a
    10·1 answer
  • Question 3 Essay Worth 10 points)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!