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mixer [17]
3 years ago
7

Use the table to help determine the answer to the question below if books cost $3.50 each how much will three books cost in all

Mathematics
2 answers:
erma4kov [3.2K]3 years ago
7 0

Answer:

$10.50

Step-by-step explanation:

3.50x3=10.50

(what table)

bonufazy [111]3 years ago
7 0

Answer:

$10.50

that is the answer because:

$3.50 + $3.50 + $3.50 = $10.50

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If the slope is 2 and the line goes through (3,-3) what is the equation?
motikmotik

Answer:

y = 2x -9

Step-by-step explanation:

To find the equation of a line using slope and a point, first use the slope to create the basic line using the slope and work from there.

For instance, the base equation here is

y = 2x

This line passes through the point (0, 0).

You can then plug in a value for x. In this case, use the value of 3, as it corresponds with your question.

y = 2 * 3

A point on the line of y = 2x would thus be (3, 6).

To make the y-value equal -3, you must then subtract from the original equation. There are 9 units between 6 and -3, so you must subtract nine units in the equation. You should get this at the end:

y = 2x -9

6 0
3 years ago
Explain why x=4 is not in the domain of the function f(x)=√x-5 ?
lianna [129]

Since we are dealing with a radical then x - 5 ≥ 0, for real values

x = 4 is less than 5 , hence is not in the domain




6 0
3 years ago
How do you do this question?
Step2247 [10]

Answer:

D

Step-by-step explanation:

f(x)=(x-1)(x^2+2)^3\\f'(x)=(x-1)*3(x^2+2)^2*2x+(x^2+2)^3*1\\f'(x)=6x(x-1)(x^2+2)^2+(x^2+2)^3\\f'(x)=(x^2+2)^2[6x^2-6x+x^2+2]\\f'(x)=(x^2+2)^2(7x^2-6x+2)\\D

7 0
3 years ago
After a 12% increase the cost of a new cooker is £190.40
Svetllana [295]

Answer:

1

X+.12*x=190.40

X(1+.12)=190.40

X=190.40/1.12=170

2a

X+x+25=100

2x=75

X=37.5%

Men=.375*270=101

2b

4 0
3 years ago
Which of the following is a reflection of ( 2,4 ) across the x-axis?
fiasKO [112]

Answer:

(2,-4)

Step-by-step explanation:

(2,4) is located in Quadrent I (+,+), if you reflect over the x-axis, it would be in Quadrent IV (+,-).

if you dont understand I suggest you draw a coordinate plane on a graphing notebook.

7 0
3 years ago
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