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3 years ago

Help me please i dont know the ans

Mathematics

2 answers:

Bad White [126]3 years ago

3 0

Y= 1x because 8/8 = 1

uysha [10]3 years ago

3 0

Answer:
y = x - 80

Explanation:
The equation of line in slope-intercept form has the following formula:
y = mx + c
where:
m is the slope
c is the y-intercept

1- getting the slope:
To get the slope, we will need two points from the graph. I will choose the two (0,-80) and (60,-20)
slope = (y2-y1) / (x2-x1) = (-20--80) / (60-0) = 1
The equation now is:
y = 1x + c
y = x + c

2- getting the y-intercept:
To get the y-intercept, we will choose a point from the graph, substitute with this point in the equation and solve for c.
I will choose point (0,-80)
y = x + c
-80 = 0 + c
c = -80

Based on the above, the equation of the line is:
y = x - 80

Hope this helps :)

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spin [16.1K]

9.) 155,952 were in town
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2 years ago

A study of parents of kindergarteners included 349 parents who were chosen at

miskamm [114]

Answer:

47% is the statistic and 31% is the parameter.

Step-by-step explanation:

A parameter is a quantity of a variable representing certain characteristic of a population.

A statistic is a quantity of a variable representing certain characteristic of a sample.

The sample of parents of kindergartners selected is, <em>n</em> = 345.

The School records show that only 31% of parents of kindergartners sent their children to pre-kindergarten.

That is the population proportion is, <em>p</em> = 0.31.

This is the parameter value.

Of the 349 parents, 47% said they sent their children to pre-kindergarten.

That is the sample proportion is, $\hat p$ = 0.47.

This is the statistic value.

Thus, the correct option is:

47% is the statistic and 31% is the parameter.

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3 years ago

The beakers shown below have different precisions. label the amount of water in each of the three beakers to the correct number

san4es73 [151]

The diagram is attached below

Beaker 1: The measurement line is between 32 and 33. There are 5 lines between 32 and 33. Making line is between third line and fourth line(between 6 and 8). So 32.7

Beaker 2: The measurement line is between 30 and 40. We can clearly see the measurement line at 32. So its 32

Beaker 3: The measurement line is between 32.7 and 32.8. We have 10 small lines inbetween them. Measurement line at 4. So its 32.74

(b) the amount of water in each of 3 beakers are not same because we can measure the difference. But they are close to each other.

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2 years ago

14a^8c^9 + 2a^4c^3 [Algebra]

rosijanka [135]

Answer:

im not the best at algebra but

2a+3b+4c

Step-by-step explanation:

subtract

(2a−3b+4c) from the sum of (a+3b−4c),(4a−b+9c) and (−2b+3c−a).

add

=(a+3b−4c)+(4a−b+9c)+(−2b+3c−a)

=(a+4a−a)+(3b−b−2b)+(−4c+9c+3c)

=4a+8c

then subtract

=(4a+8c)−(2a−3b+4c)

=4a+8c−2a+3b−4c

=2a+3b+4c

3 0

2 years ago

A company has determined that the number of items it sells varies inversely as the price of the item. If 20,000 items can be sol

mestny [16]

Let N be the number of items sold and p the price.
Since the variation is inverse, then the relation between N and p is:
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$20000=k\dfrac{1}{9.5}\\p=20000\times9.5=190000$
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$N= 190000\dfrac{1}{8.75}=21714 \text{ total items}$

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2 years ago