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3 years ago

Final question for my homework

Mathematics

2 answers:

zubka84 [21]3 years ago

6 0

20% = 0.20

- - 0.20 = 0.80

28*0.80 = 22.40

22.40-2 = 20.40

it cost $20.40

valkas [14]3 years ago

5 0

First, you need to find out what 20% of $28 is so you can subtract if from the price of the necklace.
 $28 x .20 = $5.60

Now we can subtract the $5.60 from $28.
 $28 – $5.60 = $22.40

Now we can subtract the $2 coupon.
 $22.40 - $2 = $20.40

So, the price that Jane will pay for the necklace is $20.40

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Answer:

Four hundredths

In standard form - $4\times 10^{-2}$

Step-by-step explanation:

Given : The green darner is one of the largest dragonflies.

It weighs about four hundredths of an ounce.

To write : Four hundredths in standard form.

Solution :

Standard form is when we write a larger number in a smaller way.

For example : $20000= 2\times 10^4$

So, according to question

Largest dragonflies weighs about four hundredths of an ounce.

Four hundredths means 0.04

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Answer:

Step-by-step explanation:

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3 years ago

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nexus9112 [7]

Answer:

$P(4,3) = 4!$

Step-by-step explanation:

Given

P(4,3)

Required

Solve

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This implies that

$P(4,3) = \frac{4!}{(4-3)!}$

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2 years ago

A student scored 66 points on his Psychology 101 midterm. If the average of his midterm and final must be between 78 and 90 incl

Paul [167]

Answer:

range of scores on final exam student get B is 90 to 100

Step-by-step explanation:

given data

Psychology 101 score = 66

average of his midterm = between 78 and 90

maximum = 100 points

to find out

range of scores on final exam student get B

solution

we consider here lowest marks need in final = x

so average at two marks should be

equation is

average marks = 0.5 × ( mid term marks + final marks ) .................1

put here value

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x = 90

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90 = 0.5 × ( 66 + x )

x = 114

so range 90 to 114

but maximum marks is 100 so

range of scores on final exam student get B is 90 to 100

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3 years ago

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Mkey [24]

Answer:

see explanation

Step-by-step explanation:

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3 years ago