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3 years ago

I don’t understand how to do this

Mathematics

2 answers:

neonofarm [45]3 years ago

8 0

Answer:

y = 8x + 0

Step-by-step explanation:

y = mx + b

m is slope

slope = change in y / change in x = (24 - 8) / (3 - 1) = 16/2 = 8

so equation is now y = 8x + b

Substitute any coordinate from the table to find b. let's use (1,8)

y = 8x + b

8 = 8(1) + b

0 = b

So equation is y = 8x + 0

il63 [147K]3 years ago

5 0

Answer is ; y= 8x + 0

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Make x the subject of the formula a=bx+c

Rina8888 [55]

Answer:

(a-c)/b = x

Step-by-step explanation:

a = bx + c

subtract 'c' from each side to get:

(a-c) = bx

divide each side by 'b' to get:

(a-c)/b = x

3 0

2 years ago

50 students live in a dormitory. The parking lot has the capacity for 30 cars. Each student has a car with probability 12 , inde

Maurinko [17]

Answer:

P(X is greater than 30) = 0.06

Step-by-step explanation:

Given that:

Sample proportion (p) = 0.5

Sample size = 30

The Binomial can be approximated to normal with:

$\mu = np = 50 \times 0.5 \\ \\ \mu= 25$

$\sigma = \sqrt{np(1-p) } \\ \\ \sigma = \sqrt{50 \times (0.5)(1-0.5) } \\ \\ \sigma = 3.536$

To find:

P(X> 30)

So far we are approximating a discrete Binomial distribution using the continuous normal distribution. 30 lies between 29.5 and 30.5

Normal distribution:

x = 30.5, $\mu$ = 25, $\sigma$ = 3.536

Using the z test statistics;

$z = \dfrac{x - \mu}{\sigma}$

$z = \dfrac{30.5 - 25}{3.536}$

$z = \dfrac{5.5}{3.536}$

z = 1.555

The p-value for P(X>30) = P(Z > 1.555)

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From the z tables;

P(X> 30) = 1 - 0.9400

Thus;

P(X is greater than 30) = 0.06

7 0

3 years ago

14. Let R^2 have inner product defined by ((x1,x2), (y,, y2)) 4x1y1 +9x2y2 A. Determine the norm of (-1,2) in this space B. Dete

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3 years ago

A scale on a blueprint drawing of a house shows that 10 centimeters represents 2 meters. What number of actual meters are repres

nata0808 [166]

Answer:

3.6 meters are represented by 18 centimeters on the blueprint.

Step-by-step explanation:

Given:

A scale on a blueprint drawing of a house shows that 10 centimeters represents 2 meters.

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Let the actual meters represented by 18 centimeters be $x.$

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Answer:

Step-by-step explanation:

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2 years ago

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