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docker41 [41]
3 years ago
10

Helllllpp me please.. Thanks

Mathematics
1 answer:
Anastasy [175]3 years ago
4 0

Answer:

With the whole thing or a specific question??

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6(a)If the gradient of the straight line
tensa zangetsu [6.8K]

Answer:

(i) k =1

(ii) y-intercept is 7

Step-by-step explanation:

<u>Given line:</u>

  • ky = kx + x + 7

<u>Divide all terms by k to get slope-intercept form of the line</u>

  • y = (1 + 1/k)x + 7/k

<u>Since the gradient (slope) of the line is 2:</u>

  • 1 + 1/k = 2
  • 1/k = 1
  • k = 1

<u>The equation is now:</u>

  • y = 2x + 7

<u>y - intercept is found when x = 0</u>

  • x = 0 ⇒
  • y = 2*0 + 7
  • y = 7

5 0
3 years ago
Find the amount of the annuity due. Round to the nearest cent.
Ber [7]
FVAD=515[((1+0.18/12)^(12*2)-1)/(0.18/12)]*(1+0.18/12)
FVAD=14967.46
5 0
2 years ago
As part of his semester project, a BYU-Idaho Introductory Statistics student calculates a 95% confidence interval for the true p
lyudmila [28]

Answer:

a. There's a 95% chance that the true proportion is in the confidence interval.

Step-by-step explanation:

When we want to estimate a property of a population (a population's parameter), without surveying the population, we use samples.

Then, with the information of the samples we can calculate the statistics and infere properties about a population. This inferences obviously came with some uncertainty, depending on the properties of the sample and specially the sample size.

When we talk about confidence intervals, we use the statistic of the sample (in this case, the mean) to estimate a range of values it is expected to find the true mean of the population. The width of this interval depends on the sample standard deviation and the sample size.

The value of the confidence interval (95%, 99%, etc) represent the probabilty that the true mean is within this interval.

3 0
3 years ago
José borrowed a total of $72 from his grandmother. He borrowed $9 each week.
miskamm [114]

Answer:

8

Step-by-step explanation:8 x 9 = 72

8 0
3 years ago
Read 2 more answers
Y=-2x -5<br><br>graph the line​
o-na [289]

Answer:

Below is an answer to help you :)

3 0
3 years ago
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