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2 years ago

What is the y-intercept of the line given by the equation y= 3x + 4?

Mathematics

2 answers:

DIA [1.3K]2 years ago

8 0

Answer:

the y intercept is 4

Step-by-step explanation:

the 4 is where the line starts so it would be (0,4)

Alik [6]2 years ago

8 0

First, notice that this equation is written in slope-intercept form which is more commonly known as y = mx + b form where the multiplier, m, or the coefficient of the ex term represents the slope of the line and the b or the constant term represents the y-intercept of the line.

I have attached slope-intercept form below.

Notice that below, the b is in place of the 4 in the equation.

So the y-intercept or the b is 4.

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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

MATH show you work pleaseee i really need this.

dlinn [17]

Answer:

The answer for 1 is B and the answer for 2 is A

Step-by-step explanation:

Because 8-5=3 and 3/3=1 And for 2 -4x6= -24 + 29 = 5

Hope it helps! ^w^

8 0

3 years ago

Read 2 more answers

Got another easy question to do. Will give, Branliest. Thanks, :)

elena55 [62]

Answer: 360g

120 --> 10

x ---> 30

120*30=10*x

3600= 10*x

x= 3600/10

x= 360

Matthew needs 360g of flour

5 0

3 years ago

Read 2 more answers

Escribe una expresión algebraica para la palabra frase: el producto de 636 y un número w

diamong [38]

Answer:

636w

Step-by-step explanation:

producto = ×

$636 \times w\\\\= 636w$

5 0

2 years ago

Use two rectangles of equal width to estimate the area between the graph of f(x) = x + cos(πx) and the x-axis on the interval [2

MrRissso [65]

We find the base of the rectangles by taking the difference between the interval endpoints, and dividing by 2.
Base of rectangle = (6 - 2) / 2
= 2

The area of the first rectangle:

(4 - 2)f(4) = 2[4 + cos(4π)]

The area the second triangle:

(6 - 4)f(6) = 2[6 + cos(6π)]

Now just compute the two areas and combined them. That will give you the estimated under the curve.

To evaluate the midpoint of each rectangle, we take the midpoint of the base lengths of each rectangle. This midpoint is the x value. Then evaluate the function at that x value.

The midpoint of the first rectangle is x=3. Evaluate f(3).
The midpoint of the second rectangle is x=5. Evaluate f(5).

7 0

3 years ago