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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!

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Upvote an will mark brainlest
Irina18 [472]

Answer:heyyy there...the answer is b that is -12x^3+12x^2-20

Step-by-step explanation:

<h3>f(x)= -12x^3+19x^2-5</h3><h3>g(x)= 7x^2+15</h3><h3>f(x)-g(x)=(-12x^3+19x^2-5)-( 7x^2+15)...{while opening the bracket the sign of the second polynomial changes accordingly}</h3><h3>it becomes -12x^3+19x^2-5-7x^2-15</h3><h3>=-12x^3+12x^2-20</h3><h3>HOPE IT HELPED UUUU</h3>
7 0
3 years ago
In a 30°-60°-90° triangle, the length of the hypotenuse is 30. Find the length of the shorter leg.
Aloiza [94]
Short leg = 30 x cos(60) = 15
3 0
4 years ago
5000 people voted in an election. Candidate Smith claimed 52% of the votes. Candidate Adams claimed 2681 votes.
SCORPION-xisa [38]

Answer:

Step-by-step explanation:

u got the first 2 correct

percentage of votes Adams claims :

so he claims 2681 out of 5281..

2681 / 5281 = (jeez...u dont want it rounded)...ok....its :

0.50766900208 which equals 50.766900208 % <==

the total of the percentages :

52% + 50.766900208% = 102.766900208 % <==

6 0
3 years ago
Read 2 more answers
Which two angles are congruent
Anna35 [415]
Angles FED and angle JKL
5 0
3 years ago
0 Expand Suppose that fish inhabiting the river in the town of Glenmeadow have a 30% rate of parasite incidence. Carl is a fishe
kogti [31]

Answer:

The more fish Carl tests, the more likely he is to find a 30% parasite incidence rate.

Step-by-step explanation:

Given that fish inhabiting the river in the town of Glenmeadow have a 30% rate of parasite incidence

Carl is a fisherman who wants to verify the parasite infection rate of Glenmeadow's fish.

Sample size of 1000 i.e. 1000 fish is caught.

The interpretation of the given statement is

The more fish Carl tests, the more likely he is to find a 30% parasite incidence rate.

is the interpretation of population proportion rate for catching fish.

8 0
3 years ago
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