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3 years ago

Whats the slope of the line? (Multi choice) 1. 1/2 2. -1/2 3. 2 4. -2

Mathematics

2 answers:

otez555 [7]3 years ago

4 0

Answer:

1. 1/2

Step-by-step explanation:

With a graph that has easily see-able points, slope can be calculated with rise over run, or change in y divided by change in x

$\frac{2-1}{2-0} =\frac{1}{2}$

What does the $\frac{1}{2}$ mean? From any point, the next point will be up one and over to the right two. Since the graph is going from bottom left to top right, it is positive.

Have a nice day!

I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

Ksju [112]3 years ago

4 0

Step-by-step explanation:

Slope = y2 - y1/x2 - x1

=> 2 - 1/2 - 0

=> 1/2

Hence,

Option A is correct

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It is believed that 11% of all Americans are left-handed. In a random sample of 100 students from a particular college with 1012

tia_tia [17]

Answer:

Step-by-step explanation:

We can calculate this confidence interval using the population proportion calculation. To do this we must find p' and q'

Where p' = 14/100= 0.14 (no of left handed sample promotion)

q' = 1-p' = 1-0.14= 0.86

Since the requested confidence level is CL = 0.98, then α = 1 – CL = 1 – 0.98 = 0.02/2= 0.01, z (0.01) = 2.326

Using p' - z alpha √(p'q'/n) for the lower interval - 0.14-2.326√(0.14*0.86/100)

= -2.186√0.00325

= -2.186*0.057

= 12.46%

Using p' + z alpha √(p'q'/n)

0.14+2.326√(0.14*0.86/100)

= 0.466*0.057

= 26.5%

Thus we estimate with 98% confidence that between 12% and 27% of all Americans are left handed.

6 0

3 years ago

Please help me ASAP!!!

OLga [1]

Answer: The answer would be B

Step-by-step explanation:

The reason for this is because the triangles are similar they are also congruent. df=bc, fe=ac, ed=ab.

Because de=ba and ba=4 in. that would mean that de would also be 4in.

3 0

3 years ago

If a third plane could be drawn which contains both lines a and b .

allsm [11]

Answer:

must be parallel

Step-by-step explanation:

They must be parallel.

6 0

3 years ago

I need help with this

Reil [10]

Answer:

see attached

Step-by-step explanation:

The domain is the horizontal extent of the graph. The graph extends to infinity in both directions horizontally (that's what the arrows mean). There are no "holes" because the open circle at x=-1 is matched by a filled circle at the same location.

The range is the vertical extent of the graph. The minimum is -3, which is included in the range. The maximum is infinity (as indicated by the up-pointing arrow).

5 0

3 years ago

Mona wants to obtain a 94% confidence interval for the mean weight of turtles. She read in the Big Book of Turtles that the stan

mel-nik [20]

Answer:

Step-by-step explanation:

Population standard deviation = σ = 37 grams

Confidence interval = 94%

(1-α)×100% = 94

⇒α = 0.06

From table z table and interpolation

z = 1.881

L = Confidence interval length = 15

N = Number of samples

$L=2z_{\alpha/2}\frac{\sigma}{\sqrt N}\\\Rightarrow \sqrt N=2z_{\alpha/2}\frac{\sigma}{L}\\\Rightarrow \sqrt N=2\times 1.881\frac{37}{15}\\\Rightarrow \sqrt N=9.2796\\\Rightarrow N=86.11097616\approx 87$

∴ Number of turtles must she must weigh is 87

6 0

3 years ago