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3 years ago

Write what the expressions below best represent within the context of the word problem.

Mathematics

1 answer:

Brilliant_brown [7]3 years ago

3 0

X=2 NICKELS.

3*2=6 QUARTERS.

PROOF:

.25*6+.05*2=1.60

1.50+.10=1.60

1.60=1.60

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I need help please I don't understand this so help please

KATRIN_1 [288]

Answer:

8.75

Step-by-step explanation:

2*2+2.25+2.5=4+4.75=8.75

*assuming the smudged fraction is 1/4

7 0

2 years ago

Scores on an english test are normally distributed with a mean of 31.5 and a standard deviation of 7.3. find the score that sepa

kobusy [5.1K]

Let X be the score on an english test which is normally distributed with mean of 31.5 and standard deviation of 7.3

μ = 31.5 and σ =7.3

Here we have to find score that separates the top 59% from the bottom 41%

So basically we have to find here x value such that area above it is 59% and below it is 49%

This is same as finding z score such that probability below z score is 0.49 and above probability is 0.59

P(Z < z) = 0.49

Using excel function to find the z score for probability 0.49 we get

z = NORM.S.INV(0.49)

z = -0.025

It means for z score -0.025 area below it is 41% and above it is 59%

Now we will convert this z score into x value using given mean and standard deviation

x = (z* standard deviation) + mean

x = (-0.025 * 7.3) + 31.5

x = 31.6825 ~ 31.68

The score that separates the top 59% from the bottom 41% is 31.68

3 0

3 years ago

V square+6v-59=0<br> answer in one equation

Tema [17]

X= $\frac{-b+/- \sqrt{b^2-4ac} }{2a}$
a=1
b=6
c=-59
x= $\frac{-6+/- \sqrt{(6)-4(1)(-59)} }{2(1)}$
x= $-3+ 2\sqrt{17}$ and $-3- 2\sqrt{17}$

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2 years ago

You want to walk from home to a clothing store that is 3/8 miles away. You stop for a rest after 1/4 miles. How much farther do

choli [55]

3/8-1/4

3/8-2/8

1/8 miles left

3 0

3 years ago

Read 2 more answers

Ajutatima la ecuatia<br> q*435=810

Alborosie

435 divided by 810 is 1.862068966. not rounded.

6 0

3 years ago