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3 years ago

How do i do this, someone help me

Mathematics

2 answers:

Over [174]3 years ago

3 0

Hi, I don’t really know how to help you, I am just saying random stuff so I don’t have to pay for this dumb app. I only wanted to cheat on my homework and not pay for it :/

elena-s [515]3 years ago

3 0

Answer: y = - 3x + 6

Step-by-step explanation:

The equation of a straight line can be represented in the slope-intercept form, y = mx + c

Where c = intercept

Slope, m = change in value of y on the vertical axis / change in value of x on the horizontal axis

change in the value of y = y2 - y1

Change in value of x = x2 -x1

y2 = final value of y

y 1 = initial value of y

x2 = final value of x

x1 = initial value of x

Looking at the graph,

y2 = - 3

y1 = 6

x2 = 3

x1 = 0

Slope,m = (- 3 - 6)/(3 - 0) = - 9/3 = - 3

To determine the intercept, we would substitute x = 3, y = - 3 and

m = - 3 into y = mx + c. It becomes

- 3 = - 3 × 3 + c

- 3 = - 9 + c

c = - 3 + 9

c = 6

The equation becomes

y = - 3x + 6

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The formula for the lateral area of a right cone is LA = rs, where r is the radius of the base and s is the slant height of the

damaskus [11]

Step-by-step explanation:

The formula for the lateral area of a right cone is :

LA = rs

Where

r is the radius of the base and s is the slant height of the cone

Equivalent expression,

$r=\dfrac{LA}{s}$

$s=\dfrac{LA}{r}$

Hence, this is the required solution.

6 0

3 years ago

The department of public safety has an old memo stating that the number of accidents per week at a hazardous intersection varies

ELEN [110]

Answer:

P-value = 0.1515

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 2.2

Sample mean, $\bar{x}$ = 2

Sample size, n = 52

Alpha, α = 0.05

Population standard deviation, σ = 1.4

First, we design the null and the alternate hypothesis

$H_{0}: \mu =2.2\\H_A: \mu < 2.2$

We use one-tailed(left) z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{2 - 2.2}{\frac{1.4}{\sqrt{52}} } = -1.03$

Now, we calculate the p-value from the normal standard table.

P-value = 0.1515

6 0

3 years ago

What is the relationship between the ratios? 10:14 and 30:36 Drag and drop to complete the statement. The ratios are (porportion

kari74 [83]

Answer:

Not Proportional

Step-by-step explanation:

30/10 = 3

36/14 = 2.57142857143

6 0

2 years ago

Read 2 more answers

Simplify 7 + (−3). (1 point) −10 −4 4 10

Ierofanga [76]

Answer:

1) 7+(-3)=

7-3=4

Step-by-step explanation:

8 0

2 years ago

if the ball dropped from 12 feet and bounces up 2/3 as high on each successive bounce,what is the height of the fourth bounce?

White raven [17]

Answer:

2 10/27 ft . . . . or . . . . 2 feet 4 4/9 inches

Step-by-step explanation:

The height on the first bounce is ...

... (12 ft) × 2/3 = 8 ft

The height on the second bounce is ...

... (8 ft) × 2/3 = 16/3 ft

The height on the third bounce is ...

... (16/3 ft) × 2/3 = 32/9 ft

The height on the fourth bounce is ...

... (32/9 ft) × 2/3 = 64/27 ft = 2 10/27 ft

_____

<em>Conversion of fractional feet to inches</em>

10/27 ft = (12 in/ft) × (10/27 ft) = 40/9 in = 4 4/9 in

_____

<em>Explicit formula</em>

We can see that for each bounce (including the first), we multiply the initial height by 2/3. After n bounces, we have multiplied the initial height by (2/3)^n. Thus the height after n bounces will be ...

... h(n) = (12 ft)×(2/3)^n

For the 4th bounce, this is ...

... h(4) = (12 ft)×(2/3)^4 = (12 ft)×(16/81) = 64/27 ft

3 0

3 years ago