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
Karo-lina-s [1.5K]
3 years ago
9

Evaluate if a = 28 and b = -3

Mathematics
2 answers:
Nata [24]3 years ago
8 0

Answer:

The answer is 4

Step-by-step explanation:

hope this helps

horsena [70]3 years ago
3 0

Answer:

4

Step-by-step explanation:

Replace a with 28 and b with -3

You might be interested in
Solve: 3n+18-n=38<br>Need help
docker41 [41]
Hope this helps you!

4 0
3 years ago
- 2a + 5b - 3c + 2a + b
kifflom [539]
The answer would be 6b-3c because a would cancel out and be 0
6 0
2 years ago
Read 2 more answers
Determine the slope and y-intercept of the line: y=-4x
lapo4ka [179]
Equation y=-4x
m=-4. Slope is -4 y-intercept is 0

y-12=2(x-1)
y-12=2x-2
y=2x-2+12
y=2x+10
7 0
2 years ago
I solved 12 I need help with 13 plzzzzzz
nataly862011 [7]

Answer:

8.75:1

Step-by-step explanation:

i could be wrong but im pretty sure

3 0
2 years ago
Read 2 more answers
A rock is launched from a cannon. After 1 second, the rock is 58 feet in the air; after 2 seconds, it is 112 feet in the air. Us
max2010maxim [7]

Answer:

Step-by-step explanation: This is the quadratic function:

h(x)=ax²+bx+c

We have two points:

(1,58)

(2,112)

Now, we calculate this quadratic funtion.

we assume that h(0)=0

Therefore:

a(0)²+b(0)+c=0

c=0

(1,58)

a(1)²+b(1)=58

a+b=58  (1)

(2,112)

a(2)²+b(2)=112

4a+2b=112

2a+b=56  (1)

With the equations (1) and (2) we make a system of equations:

a+b=58

2a+b=56

we can solve this system of equations by reduction method.

-(a+b=58)

2a+b=56

---------------------

a=-2

-2(a+b=58)

2a+b=56

-------------------

      -b=-60  ⇒  b=60

The function is:

h(x)=ax²+bx+c

h(x)=-2x²+60x

Now find the height, in feet, of the rock after 10 seconds in the air.

h(10)=-2(10)²+60(10)

h(10)=-200+600=400

Answer: 400 ft.

8 0
2 years ago
Other questions:
  • Danica wants to arrange her model cars in rows with exactly 6 cars in each row. She now has 23 model cars. What is the smallest
    15·1 answer
  • A text font fits 12 characters per inch. Using the same font, how many characters can be expected per yard of text?
    10·1 answer
  • What is the sum of all of the odd numbers from 1 to 59? <br> Answer 900
    10·2 answers
  • HELP MEEEEEEEEEEEEEEEEEE​
    6·2 answers
  • 2) If the sales tax rate is 6.25% in Rio Rancho, how much would the sales tax be for a pair of shoes that cost
    5·1 answer
  • Rounded to nearest tenth
    9·1 answer
  • while assembling soldier in a square from having 64 soldiers in each row,the officer find 219 soldiers are extra then, to aarang
    5·1 answer
  • I need help ASAP???​
    14·1 answer
  • Ms. Ringer asked her class, "What are the favorite colors of the students in our school?" Which student correctly describes Ms.
    8·1 answer
  • Given the following unit circle, rotate green dot to the appropriate angle and then find the exact value of the function.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!