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Papessa [141]
2 years ago
11

If f(x) = 2x² + 1, what is f(x) when x = 3? 0 1 07 O 13 19

Mathematics
1 answer:
zhuklara [117]2 years ago
3 0

Answer:

f(x)=19

Step-by-step explanation:

2(3)²+1

2(9)+1

19

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line pass through the line (-3, -7.5)tahila determined that the equation of line n is y=0.5x explain the error tahila made while
Tasya [4]

The equation of the line will be (assuming the y-intercept equal to zero):

y = 2.5*x

<h3>What is Tahila's mistake?</h3>

We know that we have a linear equation of the form:

y = a*x + b

Such that we know that the line passes through (-3, -7.5), notice that the proposed equation is:

y = 0.5*x

If you evaluate that in -3, you get:

y = 0.5*-3 = -1.5

So this line does not pass through (-3, -7.5).

If we assume that b = 0 in the linear equation, then we can find the value of a as:

-7.5  =  a*-3

a = 7.5/3 = 2.5

Then the linear equation is:

y = 2.5*x

If you want to learn more about linear equations:

brainly.com/question/1884491

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4 0
2 years ago
A lawn mower manufacturer incurs a total of $34,816 in overhead costs and $388 per lawn mower in production costs. How many lawn
blsea [12.9K]
Let x represent the amount of lawn mowers that were manufactured

The company has to pay $34,816 before they even make any lawn mowers plus $388 per lawn mower.

((34816+388x)/x)=660
34816+388x=660x
34816=272x
X=128

Therefore, there were 128 lawn mowers manufactured
5 0
4 years ago
He sum of two numbers is 43 and the difference is 5. What are the numbers ?
lord [1]

Answer:

24,19

Step-by-step explanation:

24+19=43

24-19=5

4 0
3 years ago
2.54 cm / 1 in. = 100 cm / x in. show the work
Kitty [74]
2.45 cm= 1 in. so 100 cm must equal 39.37 in. because you already know 2.45 cm equals 1 inch and 1 metre equals 100 cm and 1 metre is equal to 39.37.
5 0
3 years ago
1/4 (4x + 8)mi need help with this question
zepelin [54]
(4x+8)/4
(4x/4)+(8/4)
x+2
7 0
4 years ago
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