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Sergio [31]
3 years ago
17

What are the x-intercepts of the graph of the function f(x)= x^2+4x-12

Mathematics
1 answer:
levacccp [35]3 years ago
7 0
(2,0)
(-6,0)
I just inserted the equation into a graphing calculator. Kinda lazy tonight :/
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Find the value of x.<br>A.5<br>B. 40<br>C. 45 <br>D. 20​
Alinara [238K]

(B) x = 40

Step-by-step explanation:

4x + 20 = 180

4x = 160

x = 40

3 0
3 years ago
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Name the kind or kinds of symmetry the following figure has: A
denpristay [2]
It is a straight line of symmetry because if you have a paper A and you fold it, it will form a straight line, and that is also meaning a straight line of symmetry. If you fold it any other way, it will not be a line of symmetry.

Hope this helps you ;)
6 0
3 years ago
A sample of 64 observations has been selected to test whether the population mean is smaller than 15. The sample showed an avera
KengaRu [80]

Answer:

Test statistic = - 0.851063

- 2.520463

Step-by-step explanation:

H0 : μ ≥ 15

H1 : μ < 15

Sample mean, xbar = 14.5

Sample standard deviation, s = 4.7

Sample size = 64

Teat statistic :

(xbar - μ) ÷ (s/√(n))

(14.5 - 15) ÷ (4.7/√(64))

= - 0.851063

The critical value at α = 0.05

Using the T - distribution :

Degree of freedom, df = 64 - 1 = 63

Tcritical(0.05, 63) = 1.6694

Test statistic - critical value

-0.851063 - 1.6694

= - 2.520463

8 0
3 years ago
Is 2/3 in smplest form
nlexa [21]
Yes it is it would not be able to go any lower
good job :)
8 0
3 years ago
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3+5=8 and 13+5=18 therefore the sum of two odd numbers is an even number?
Naddik [55]
Yes because the number that they equal can be divided by two
7 0
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