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ser-zykov [4K]
3 years ago
6

I need help with algebra 1 please

Mathematics
1 answer:
Tasya [4]3 years ago
7 0

Step-by-step explanation:

in such cases you need to identify and mark at least 2 points in the coordinate grid and then draw a line through them.

how to find 2 points ? by simply picking 2 values for x and then use the equation to calculate the corresponding y.

I start in such cases usually with x = 0.

the equation terms is that

y = -1/2×0 + 7 = 7

so, our first point is (0, 7).

that means it is on the y-axis itself (again, x=0) up there at the "7" mark.

for a second point I would pick a value for x that allows me to deal with integer numbers in the equation (that gets rid of the -1/2 fraction).

so, because of the -1/2 nature, I would pick an even number like 4 or 6.

so, let's use 6.

y = -1/2×6 + 7 = -3 + 7 = 4.

our second point is therefore (6, 4).

follow on the x-axis to the right until the "6" mark, and then go up 4 units. there you mark the point.

that is how coordinates work.

and now you take a ruler and you draw a line through both points (not just connect the 2 points, but really extend that line in both directions to the edges of the coordinate grid).

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In a random sample of 200 Americans, 51% said they favor building more nuclear power plants. In a random sample of 150 French, 4
Varvara68 [4.7K]

Answer:

Yes, there is enough evidence to say the proportions are the same.

Step-by-step explanation:

Null hypothesis: The proportions are the same.

Alternate hypothesis: The proportions are not the same.

Data given:

p1 = 51% = 0.51

n1 = 200

p2 = 48% = 0.48

n2 = 150

pooled proportion (p) = (n1p1 + n2p2) ÷ (n1 + n2) = (200×0.51 + 150×0.48) ÷ (200 + 150) = 174 ÷ 350 = 0.497

Test statistic (z) = (p1 - p2) ÷ sqrt[p(1-p)(1/n1 + 1/n2) = (0.51 - 0.48) ÷ sqrt[0.497(1-0.497)(1/200 + 1/150)] = 0.03 ÷ 0.054 = 0.556

The test is a two-tailed test. At 0.10 significance level the critical values -1.645 and 1.645

Conclusion:

Fail to reject the null hypothesis because the test statistic 0.556 falls within the region bounded by the critical values.

8 0
3 years ago
sam gets 15 vacation days each year. By june 1st, sam had used 6 of his vacation days. what fraction on the year's total did he
Mashcka [7]

Answer:

Step-by-step explanation: put your fraction 6 over 15

8 0
3 years ago
Guided Practice
KATRIN_1 [288]

Answer:

i would think its C

Step-by-step explanation:

the other options dont make sense lol

hope this is correct and helps :)

5 0
3 years ago
Read 2 more answers
Find f (0) and find x when f (x) =4
Anuta_ua [19.1K]
At x = 0, y-coordinate is at -4 so that means f(0) = -4

Now for f(x) = 4, we need to find any x-coordinates such that y-coordinates is 4.

There are two possible answer: x = -8 and x = 8

So x = -8, 8

Hope this helps.
4 0
3 years ago
I need help and please show me work?!
jek_recluse [69]

Answer:

44,51

Step-by-step explanation:

It is cut off, but according to the Order of Operations [GEMS(A)\BOMDAS\PEMDAS etc.], parentheses are dealt with first:

(13,1 × 3) + 5,21 = 44,51

39,3

Just like whole numbers, you multiply the exact same way.

I am joyous to assist you anytime.

3 0
3 years ago
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