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3 years ago

If a 12 foot ppiece of electrical tape has 5 pieces that are each 1.45 feet cut from it, what is the new length of the tape?

Mathematics

1 answer:

liberstina [14]3 years ago

6 0

4.75 feet, because you would multiply 5 by 1.54 which gives you 7.25 subtract that from 12

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A certain four-cylinder combination lock has 50 numbers on it. to open it, you turn to a number on the first cylinder, then t

kumpel [21]

A certain four-cylinder combination lock has 50 numbers on it.

It is a four cylinder combination lock

Each cylinder has 50 numbers

So we have to choose 4 numbers for 4 cylinders

_____ , ______ , ______, _____

you turn to a number on the first cylinder

We have 50 numbers so we have 50 combinations

__50___ , ______ , ______, _____

Repetitions are allowed so we do the same for remaining three

50 , 50 , 50 , 50

50 * 50 * 50* 50 = 6250000

There are 6250000 different lock combinations .

7 0

3 years ago

Read 2 more answers

Solve (x - 3)^2+7=97, where X is a real number. Round your answer to the nearest hundredth.

Eddi Din [679]

Answer:

x ≈ - 6.49, x ≈ 12.49

Step-by-step explanation:

Given

(x - 3)² + 7 = 97 ( subtract 7 from both sides )

(x - 3)² = 90 ( take the square root of both sides )

x - 3 = ± $\sqrt{90}$ ( add 3 to both sides )

x = 3 ± $\sqrt{90}$

Then

x = 3 - $\sqrt{90}$ ≈ - 6.49 ( to the nearest hundredth )

x = 3 + $\sqrt{90}$ ≈ 12.49 ( to the nearest hundredth )

6 0

3 years ago

How do I Simplify the expression

nordsb [41]

Answer:-6/2

Step-by-step explanation:I think this is the answer because you have to cross muitply.

6 0

4 years ago

Read 2 more answers

Angelo can run 3 miles in 22

Strike441 [17]

Answer: 4.52 miles

Step-by-step explanation:

5 0

2 years ago

Solve the following quadratic function by utilizing the square root method. y = x2 - 64

stiks02 [169]

Answer:

$x=\pm\sqrt{y+64}$

Step-by-step explanation:

All you need to do is isolate the x.

First, add 64 to both sides:

$y=x^2-64\\x^2-64+64=y+64\\x^2=y+64$

Then, take the square root of both sides:

$\sqrt{x^2}=\sqrt{y+64}\\x=\sqrt{y+64$

Actually, that is:

$x=\pm\sqrt{y+64}$

Here's the reason for that. An example would be:

$x^2=4$

Here, you'd take the square root of both sides to solve for x.

$\sqrt{x^2}=\sqrt{4}\\x=2$

Right? But X could also be a -2, because a negative times a negative is a positive.

$(-2)^2=4\\-2\times-2=4\\4=4$

Therefore, $x=2, -2$ or $x=\pm2$

$x^2=2\times2=4\\x^2=-2\times-2=4$

7 0

3 years ago