3 years ago

Melinda’s heart beats 15 times during 1 − 6 of a minute. At that rate, how many times does her heart beat each minute?

1 answer:

8 0

Answer:

90 beats per minute

Explanation:

1/6 of 1 minute is 10 seconds. You multiply 15 x 6 and get 90. Which is how much her heart beats per minute.

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3x - y = 7 y = 2x - 2

____ [38]

Answer:

x = 9

Step-by-step explanation:

1) Subsitute! You have to replace y with 2x - 2 in 3x -y = 7, b/c they already gave you the equation for y (in the second part: y = 2x - 2)

So, your equation would look like this : 3x - (2x - 2) = 7

3) Solve suing PEMDAS!

There's a negative outside the parenthesis of 2x -2 -> - (2x-2). Multiply the negative individually inside the parenthesis so you will get (-2x + 2)

3x - 2x - 2 = 7 subtract the same variable; x

1x - 2 = 7 you don't need to put 1 to x, only if you want!

+ 2 + 2 add 2 on both sides

x = 9

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3 years ago

Write the slope intercept form of the equation of each line.

nadya68 [22]

Answer:

y=-3/2x+4
y=-3/2
y=3x+2
y=3/2+3

Step-by-step explanation:

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3 years ago

When you use a photocopier to enlarge an image, the whole image becomes bigger by a certain percentage. In this problem, the big

frutty [35]

Answer:

1.6

Step-by-step explanation:

4.8/3= 1.6

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3 years ago

20+20+??? a. 80 b. 20 c .40 d. 100

sattari [20]

Answer:

c .40

Step-by-step explanation:

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3 years ago

Read 2 more answers

Which of the following describes the function −x3 + 5?

algol13

Answer:

The correct choice is C

Step-by-step explanation:

The given function is:

$-x^3+5$

The degree of this function is odd so the function will rise at one end and fall on the other end.

Since the coefficient of the leading term is negative, the graph of the function will rise at the left and fall on the right.

The correct answer is option C.

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3 years ago