3 years ago

4.

Mathematics

1 answer:

Arlecino [84]3 years ago

6 0

Answer:

Step-by-step explanation:

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Lara has $1,425 in her bank account. Write and solve an equation to show how much money she started with if that amount reflects

makkiz [27]

1,425 + 14% = 1,425.14

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3 years ago

A clothing store has a section of jeans on sale. There is a 30% chance of picking a pair with a 30-inch inseam; a 25% chance of

Andrej [43]

The expected value of the inseam length of the jeans is found as

30% of 30+ 25% of 32+ 10% of 34+ 10% of 36 + 10% of 38 + 15% of 40

= $\frac{30}{100}\times30 +\frac{25}{100}\times32+ \frac{10}{100}\times34+ \frac{10}{100}\times36 +\frac{10}{100}\times38+ \frac{15}{100}\times40$

= $9+8+3.4+3.6+3.8+6=33.8$

Hence, the third option 33.8 is the correct expected value.

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3 years ago

Somebody please help me answer this

nata0808 [166]

Answer:

Step-by-step explanation:

When somethin is decreasing you would subtract the percent it was decreasing by, by 1.

.024 - 1 = .976

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3 years ago

Determine algebraically whether f(x)=3x-2 and g(x)=(x+2)/3 are inverse functions. Show all work.

Sergio [31]

Answer:

Yes

Step-by-step explanation:

f(x)=3 x-2

y= 3 x-2

x= 3y - 2

3 y -2 = x

3 y -2 + 2 = x + 2

3 y = x + 2

3 3 3

3 y = x + 2

3 3 3

y = x + 2 replace y with f ^ -1(x)

3 3

f ^-1 (x) = x + 2

3 3

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3 years ago

Y =2/3x + 20 when x = 21

nydimaria [60]

Answer:

Step-by-step explanation:

First we need to do 2/3*21, which equals 14 as 3 and 21 can be simplified to 1 and 7. 7 * 2/1= 14. Then we add the 20 to 14, 20+14= 34

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3 years ago

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