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
tresset_1 [31]
3 years ago
11

Evaluate the expression when a=4 and b=-3. -a +4b

Mathematics
2 answers:
myrzilka [38]3 years ago
6 0
Sense we know the values of a and b all we need to do is fill them in the problem and solve it
So once you fill them in it would give you -4+(4•-3)
Then you would simplify the parentheses
-4+(-12)
After wards you would add these two numbers together and since they are negative it would appear for the number to be bigger even though it is getter quite smaller
So the answer to this expression would be
= -16
devlian [24]3 years ago
3 0

Answer:

-16

Step-by-step explanation:

-a +4b

By putting the value a = 4 and b = -3

= -(4) + 4 × (-3)

= -4 - 12

= <u>-16 (Ans)</u>

You might be interested in
Find the equation of the line which passes through the point (-4,12) and is perpendicular to the given line. Express your answer
Vika [28.1K]

Answer:

y = 1/7x + 88/7

Step-by-step explanation:

y = mx +b

since it is perpendicular you have to get the negative reciprocal of the slope which is 1/7

y = 1/7x + b then you would plug in your points

12 = 1/7(-4) + b and then solve for b

12 = -4/7 + b

+ 4/7

88/7 = b

y = 1/7x + 88/7

8 0
3 years ago
Solve for the value of y in the following system of equations by using the elimination method.
pantera1 [17]

Answer:

I got x=5/2; y=0 lmk if it works

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
A falling object travels a distance given by the formula d=3t+5t2, where d is measured in feet and t is measured in seconds. How
Romashka-Z-Leto [24]

Answer:

<em>4.52secs</em>

Step-by-step explanation:

Given the height of a falling object expressed as;

d=3t+5t^2

If the object travel 84 feet, we are to find the time t it takes to travel. On substituting;

84 = 3t+5t^2

3t+5t^2 - 84 = 0

t = -5±√25-4(3)(-84)/2(3)

t = -5±√25+1008/6

t = -5±32.14/6

t = -5+32.14/6

t = 27.14/6

<em>t = 4.52 secs</em>

<em>Hence it will take 4.52secs for the object to travel 84feet</em>

8 0
2 years ago
Identify the center and radius for the circle with the following equation; (x+5)^2+y^2+12y=3
rosijanka [135]
Center: (-5,-6)
Radius: 39
How to do it

Complete the square for
y
2
+
12
y
y
2
+
12
y
.

(
y
+
6
)
2
−
36
(
y
+
6
)
2
-
36
Substitute
(
y
+
6
)
2
−
36
(
y
+
6
)
2
-
36
for
y
2
+
12
y
y
2
+
12
y
in the equation
(
x
+
5
)
2
+
y
2
+
12
y
=
3
(
x
+
5
)
2
+
y
2
+
12
y
=
3
.
(
x
+
5
)
2
+
(
y
+
6
)
2
−
36
=
3
(
x
+
5
)
2
+
(
y
+
6
)
2
-
36
=
3
Move
−
36
-
36
to the right side of the equation by adding
36
36
to both sides.
(
x
+
5
)
2
+
(
y
+
6
)
2
=
3
+
36
(
x
+
5
)
2
+
(
y
+
6
)
2
=
3
+
36
Add
3
3
and
36
36
.
(
x
+
5
)
2
+
(
y
+
6
)
2
=
39
(
x
+
5
)
2
+
(
y
+
6
)
2
=
39
This is the form of a circle. Use this form to determine the center and radius of the circle.
4 0
2 years ago
What are the discontinuities of the function f(x)= (x^2 - 36)/(4x - 24)
cricket20 [7]
When x = -6  the denominator  = 0
There is a hole in the graph at (-6,0)
6 0
3 years ago
Other questions:
  • What are the solutions of the equation x^4 – 5x^2 – 36 = 0? Use factoring to solve.
    12·1 answer
  • Prove the following trigonometric identities:
    15·1 answer
  • 5 divided by what number equals 30
    5·2 answers
  • 152 + (-20) + 84 =<br><br> The answers are 216, 48, -48, -126
    15·2 answers
  • I WILL GIVE 175 POINTS TO ANYONE WHO HELPS ON ALL QUESTIONS
    5·1 answer
  • WILL MARK BRAINLIEST PLS HELP
    10·1 answer
  • Write an integer for this situation <br><br> 1 . $50 deposit
    15·2 answers
  • What is this plz help
    13·1 answer
  • (11 + 40 - 3):3 + 62
    8·1 answer
  • *please be serious*
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!