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
olya-2409 [2.1K]
4 years ago
11

Evaluate the expression when a=-7. a^2+4a-2

Mathematics
1 answer:
andrey2020 [161]4 years ago
4 0

Plug in the value to solve the expression.

(-7)^2+4(-7)-2

49-28-2

19

Hope this helps.

頑張って!

You might be interested in
How many batting lineups are there for nine players of a baseball team if the center fielder must bat fourth, the second baseman
OLga [1]

The number of possible batting lineups is 720

<u><em>Explanation</em></u>

Total number of players in the team = 9

The center fielder must bat fourth, the second baseman must bat third and the pitcher last. That means, <u>3 slots in the batting line-up are already assigned to 3 players</u>.

So, the remaining (9 - 3) = 6 players will be assigned to remaining 6 slots.

Thus, the possible number of ways so that 6 players can be assigned to 6 slots will be:  6! = 6*5*4*3*2*1=720

4 0
3 years ago
Circle X has radius r X = 6 units and circumference C X = 12 π units. Circle Y has circumference C Y = 6 units. Which equation i
slega [8]

Answer:

ry=\frac{rx}{2\pi }

Step-by-step explanation:

we know that

The circumference of a circle is equal to

C=2\pi r

we have

<em>Circle X</em>

rx=6\ units

Cx=12\pi\ units

<em>Circle Y</em>

Cy=6\ units

Find the radius ry

we know that

Cy=2\pi ry

substitute the value of Cy

6=2\pi ry

ry=\frac{6}{2\pi }

Remember that the value of rx is rx=6\ units

substitute

ry=\frac{rx}{2\pi }

6 0
3 years ago
Patrick's favorite shade of purple paint is made with 4 ounces of blue paint for every 3 ounces of red paint. Which of the follo
Aleks04 [339]

Answer:

B- 8 ounces of blue paint mixed with 6 ounces of red paint

D - 20 ounces of blue paint mixed with 15 ounces of red paint

3 0
4 years ago
The squirrel could store 48 nuts in a hiding place. If there were 768 nuts to hide, how
Dmitrij [34]

Answer:

16 hiding places

Step-by-step explanation:

768/48

=16

nuts hided/storing the nuts

7 0
3 years ago
Read 2 more answers
Find an equation for the nth term of the arithmetic sequence.<br> -20, -16, -12, -8, ...
liq [111]
Common difference = -16-(-20) = 4
nth term = -20+(n-1)4
5 0
3 years ago
Read 2 more answers
Other questions:
  • Write an equation of a line in point-slope form that passes through (-4,-7) and has a slope of -2
    8·1 answer
  • (a+b)^2–(b+c)^2 as a product of two polynomials
    11·1 answer
  • Solve the system of equations using the substitution method.<br> ​<br> ​ x = −2 2x + 5 = y
    13·2 answers
  • Solve the quadratic equation by the square root property<br> 6x2=54
    5·1 answer
  • Help please asap will mark crown
    10·2 answers
  • PLS help will give brainly points thank you
    11·2 answers
  • The value of the expression a³-2a²+3a+5 for a = -1
    11·2 answers
  • The ratio of boys to girls is 4:5 what fraction of the club is boys?
    7·1 answer
  • Angles 4 &amp; 8 are an example of which type of angle? *
    10·1 answer
  • The Panthers did not score more points than the Tigers. The Tigers scored fewer points than the Lions. The Lions scored fewer po
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!