Graph a line with a y-intercept of -3 and a slope of 4/3

Evaluate the expression 4y^2 -a if x = 2, y = -3, and a =6

Vika [28.1K]

The expression is telling you to proceed as follows:

Pick some number $y$
Pick some number $a$
Compute the square of $y$
Multiply it by 4
Subtract $a$ from this result.

So, first of all, there's no point in fixing $x = 2$ , because x doesn't appear in the expression. As for the evaluation, let's follow the aforementioned steps with fixed values:

Pick some number $y$

Pick $y=-3$
Pick $a=6$
Compute $y^2 = (-3)^2 = 9$
Multiply it by 4: $9 \cdot 4 = 36$
Subtract $6$ from this result: $36-6=30$

3 0

3 years ago

1. Expand the expression:<br> 6 (2k – 3)

Archy [21]

Answer:

12k - 18

Step-by-step explanation:

i used the distributive property to solve. i hope thats what you meant:)

8 0

3 years ago

What is 9 1/3 rounded to the nearest whole number

avanturin [10]

Lol
.... It's 9.... 1/3'rd is smaller than a half.. so the number gets rounded DOWN.... so the answer is 9... HOPE IT HELPS FELLA.....

7 0

3 years ago

Read 2 more answers

Suppose that the director of manufacturing at a clothing factory needs to determine whether a new machine is producing a particu

storchak [24]

Answer:

a.H0 : u1= u2 against Ha : u1≠ u2 This is a two sided test

b) There isn't enough evidence that the machine is not meeting the manufacturer’s specifications in terms of the average breaking strength.

c) the p- value is 0.0359*2= 0.0718. It is greater than the value of ∝ so there isn't enough evidence that the machine is not meeting the manufacturer’s specifications in terms of the average breaking strength.

d) There is enough evidence that the machine is not meeting the manufacturer’s specifications in terms of the average breaking strength.

e) There isn't enough evidence that the machine is not meeting the manufacturer’s specifications in terms of the average breaking strength.

Step-by-step explanation:

Formulate the null and alternative hypotheses as

a) H0 : u1= u2 against Ha : u1≠ u2 This is a two sided test

Here ∝= 0.005

For alpha by 2 for a two tailed test Z∝/2 = ± 1.96

Standard deviation = s= 3.5 pounds

n= 49

The test statistic used here is

Z = x- x`/ s/√n

Z= 69.1- 70 / 3.5 / √49

Z= -1.80

Since the calculated value of Z= -1.80 falls in the critical region we reject the null hypothesis.

b) There isn't enough evidence that the machine is not meeting the manufacturer’s specifications in terms of the average breaking strength.

c) the p- value is 0.0359*2= 0.0718. It is greater than the value of ∝ so there isn't enough evidence that the machine is not meeting the manufacturer’s specifications in terms of the average breaking strength.

d) If standard deviation is 1.75 pounds

The test statistic used here is

Z = x- x`/ s/√n

Z= 69.1- 70 / 1.75 / √49

Z= -3.6

This value does not fall in the critical region.

d) There is enough evidence that the machine is not meeting the manufacturer’s specifications in terms of the average breaking strength.

e) If the sample mean is 69 pounds

Z = x- x`/ s/√n

Z= 69.1- 69 / 3.5 / √49

Z= 0.2

This value falls in the critical region

e) There isn't enough evidence that the machine is not meeting the manufacturer’s specifications in terms of the average breaking strength.

7 0

3 years ago

Marcel and Floyd are playing games at an arcade. Marcel has $8.25 and is only playing $0.25 games. Floyd has $9.75 and is only p

icang [17]

Answer:

3 games

Step-by-step explanation:

5 0

3 years ago