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3 years ago

Write an equation in slope intercept form for the line that has a y intercept of 3 and a slope of -2

Mathematics

1 answer:

charle [14.2K]3 years ago

4 0

Answer:

-2x + 3

Step-by-step explanation:

Trust me, this is the answer.

An explanation:

Slope is rate of change.

if the lady sells 2 cakes in 3 hours, her rate of change, or slope is 2/3.

Y-intercept is where the data enters the graph. It will not always be at the origin of the graph. If on the lady's first day of business, she sold 10 cakes, the Y-intercept is 10. This equation of the lady's business in slope intercept form would be 2/3x + 10. ALWAYS write the slope before x and the y intercept after the + or -- , hope this helps, but -2x + 3 is your answer for sure.

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A random sample of size 100 was taken from a population. A 94% confidence interval to estimate the mean of the population was co

Firlakuza [10]

Answer:

Step-by-step explanation:

1) The z value was determined using a normal distribution table. From the normal distribution table, the corresponding z value for a 94% confidence interval is 1.88

The correct option is D

2) if 70% of all internet users experience e-mail fraud. It means that probability of success, p

p = 70/100 = 0.7

q = 1 - p = 1 - 0.7 = 0.3

n = number of selected users = 50

Mean, u = np = 50×0.7 = 35

Standard deviation, u = √npq = √50×0.7×0.3 = 3.24

x = number of internet users

The formula for normal distribution is expressed as

z = (x - u)/s

We want to determine the probability that no more than 25 were victims of e-mail fraud. It is expressed as

P(x lesser than or equal to 25)

The z value will be

z = (25- 35)/3.24 = - 10/3.24 = -3.09

Looking at the normal distribution table, the corresponding z score is 0.001

P(x lesser than or equal to 25) = 0.001

7 0

3 years ago

Two runners one averaging 5 miles per hour and the other one averaging 4 miles per hour, start at the same place and run along t

Vikentia [17]

Answer:

The Distance cover by both the Runners is same = 10 miles

Step-by-step explanation:

According to question ,

The Speed of first runners (S 1) = 5 miles per hour

The speed of second runners (S 2) = 4 miles per hour

Let The Time taken by First runner (T 1 ) = T hour

But the second runner arrives half hour after the first runner ,

I.e The Time taken by Second runner (T 2) = ( T + $\frac{1}{2}$ )

Now from Distance = Speed × Time

Since both the runners start from same place and run along the same trail

SO ,Both the Distance cover by both are same , D 1 = D 2

i.e Speed 1 × Time 1 = Speed 2 × Time 2

5 mph × T = 4 mph × ( T + $\frac{1}{2}$ )

5 T = 4 T + ( 4 × $\frac{1}{2}$ )

Or, 5 T - 4 T = 2

∴ T = 2 hour ,

Time take by first = T1 = T = 2 hour

Time take by second = T2 = T + $\frac{1}{2}$ = (2 + $\frac{1}{2}$ )hour = $\frac{5}{2}$

Now the Distance cover = Speed × Time

Distance (D1) = 5 mph × 2 hour = 10 mile

And Distance (D2) = 4 mph × $\frac{5}{2}$ = 10 miles

Hence, As The Distance cover by both the Runners is same = 10 miles Answer

5 0

3 years ago

Round 3.99998 to 4 decimal places (answer is not 4.0000)

Brums [2.3K]

I need help on this too

4 0

3 years ago

How many times does 10 go into 10000

vichka [17]

The correct answer is: 
1000.

Explanation: 
We divide to find the answer to this: $\frac{10000}{10}$ . When we are dividing by 10, we can move the decimal to the left one place; doing this gives us 1000.

6 0

3 years ago

Can someone help me with this question ASAP

sattari [20]

Let m be the slope:

m=(y₂-y₁)/(x₂-x₁)

solve for c:

1/6=(9-c)/(1-7)

1/6=(9-c)/-6

-1=9-c

-10=-c

c=10

3 0

3 years ago