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
grin007 [14]
3 years ago
5

Evaluate the function for the given value. f(-3) if f(x) = 4x 2 + 7x

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
3 0

Answer:

x = 15

Step-by-step explanation:

f(x) = 4x² + 7x

= 4(-3)² + 7(-3)

= 36 + (-21)

= 15

You might be interested in
Mr. I does a job in x hours while Mr. L can do it in y hours. How much of the job could they do together if they were to work fo
dimulka [17.4K]

Answer: Work done by both of them in k hours is

\frac{k(x+y)}{xy}

Explanation:

Since we have given that

Number of hours Mr. I does a job = x hours

Number of hours Mr. L does a job = y hours

Work done by Mr. I is given by

\frac{1}{x}

Work done by Mr. L is given by

\frac{1}{y}

Work done if they do together is given by

\frac{1}{x}+\frac{1}{y}\\\\=\frac{x+y}{xy}

Work done if they work together for k hours is given by

\frac{x+y}{xy}\times k\\\\=\frac{k(x+y)}{xy}

Hence, work done by both of them in k hours is

\frac{k(x+y)}{xy}

3 0
3 years ago
A rotating sprinkler that sprays water at a radius of 7 feet is used to water a lawn. Determine the area of the lawn that is bei
Damm [24]

Answer:

49Pi

Step-by-step explanation:

Area of a circle is = to pi(r)^2

3 0
3 years ago
What is 4/5 +3/2+5/3
Lelu [443]
3.96666666667 so technically it .96
7 0
3 years ago
Write each equation in slope-intercept form. underline the slope and circle the y-intercept in each equation 5x+3y=30
faust18 [17]

Answer:

The slope is

5

3

.

The y-intercept is

−

10

.

Explanation:

5

x

−

3

y

=

30

is the standard form for a linear equation. The slope-intercept form is

y

=

m

x

+

b

, where

m

is the slope, and

b

is the y-intercept. To convert from standard form to slope-intercept form, solve the standard form for

y

.

5

x

−

3

y

=

30

Subtract

5

x

from both sides of the equation.

−

3

y

=

30

−

5

x

Divide both sides by

−

3

.

y

=

30

−

3

−

5

x

−

3

=

y

=

−

10

+

5

3

x

Rearrange the right hand side.

y

=

5

3

x

−

10

m

=

5

3

,

b

=

−

10

graph{y=5/3x-10 [-10, 10, -5, 5]}

4 0
3 years ago
Read 2 more answers
What is the equation of the midline for the function f(x)? f(x)=1/2 cos(x)+5
ivolga24 [154]

Answer:

y = 5

Step-by-step explanation:

That "+5" elevates the graph of this cosine function 5 units above the x axis, and thus the "midline" you wanted is  y = 5.

6 0
3 years ago
Other questions:
  • The annual health care costs for two new companies that opened in the year 2000 are shown on the graphs below.
    12·2 answers
  • What are 2 phrases for the expression 85-y
    10·2 answers
  • How you work out 7 (-5v-8)
    10·2 answers
  • The chorus has 35 members. Which expression represents the number of ways a group of 6 members can be chosen to do a special per
    9·1 answer
  • a square reflecting pool has an area of 183.84 square meters. What is the approximate perimeter of the reflecting pool?
    12·1 answer
  • What is the ratio of 24 to 32?
    15·1 answer
  • What's the three methods ratio
    15·1 answer
  • Are the diagnols of the parallelogram perpendicular? why or why not?
    10·2 answers
  • Please help.<br> Algebra.
    11·1 answer
  • Which sets of ordered pairs show equivalent ratios?. Check all that apply. (1, 2), (2, 3), (4, 7) (2, 2), (4, 4), (6, 6) (3, 1),
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!