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2 years ago

Help me please! I don't really understand

Mathematics

1 answer:

MaRussiya [10]2 years ago

8 0

It’s basically finding slope so it’s
1/4

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Gambar grafik fungsi kuadrat dari y=x²-x-6

sveticcg [70]

-x^2-x+y-6 Should be right
y=x^2-x-6 = x^2-x+y-6

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3 years ago

Your bank pays 4% annual interest compounded quarterly on January 1, April 1, July 1, and October 1. You deposited $840 on April

Fofino [41]

Deposit: = $600 on 1st April

Futher Depost = $200 on1st July

Interest rate = 2.60% per annum

Compounded = quarterly

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3 years ago

insted of telling carmen her age ,sora gave this clue:my age is one-tenth of one-tenth of one-tenth of 3,000.

aleksklad [387]

I think her age will be 3

7 0

3 years ago

Read 2 more answers

Please answer this question, 30 points and will give brainliest!

kotykmax [81]

Answer:

∠C = 80 ° ; ∠ T = 40°.

Step-by-step explanation:

Triangle CRS is isosceles because it has two sides of equal length. (CR and CS are radii).

An isosceles triangle has also two equal angles, which means that ∠CRS= ∠CSR.

Therefore, ∠C = 80 ° (180° – 50° - 50°) because the sum of angles in a triangle is 180 degrees.

∠C is the central angle of the arc RS.

∠ T is the inscribed angle of the arc RS.

An inscribed angle is half of a central angle that subtends the same arc on the circle, so the inscribed angle ∠ T is half of the central angle ∠C. Since ∠C = 80 °, we can easily determine the measure of ∠ T:

80° divided by 2 is 40°.

6 0

3 years ago

How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters? We want 95% confidence that

zimovet [89]

Answer:

61 commuters must be randomly selected to estimate the mean driving time of Chicago commuters.

Step-by-step explanation:

Given : We want 95% confidence that the sample mean is within 3 minutes of the population mean, and the population standard deviation is known to be 12 minutes.

To find : How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters?

Solution :

At 95% confidence the z-value is z=1.96

The sample mean is within 3 minutes of the population mean i.e. margin of error is E=3 minutes

The population standard deviation is s=12 minutes

n is the number of sample

The formula of margin of error is given by,

$E=\frac{s\times z}{\sqrt{n}}$