All categories

3 years ago

What was the approximate percent decrease in the price of her groceries due to the coupons?

Mathematics

1 answer:

vovangra [49]3 years ago

3 0

Answer:

The approximate percent would be 25%

Step-by-step explanation:

You might be interested in

What’s the equation of this graph

Degger [83]

Answer:

y = 2/3x + 4

Step-by-step explanation:

y = mx + b

m= 4/6 (y intercept over x intercept)

simplify

m= 2/3

b= 4 (y intercept)

6 0

3 years ago

Write 2x+y=5 in slope intercept form

mylen [45]

2x+y=5
To put this in slope intercept form, you simply have to get y by itself on the left side of the equation.
2x+y=5
2x+y-2x=5-2x
y=-2x+5
Now, I had to switch the right side around like that, because slope intercept form is y=mx+b
Because you're subtracting 2x from 5, it becomes 5 added to -2x when it's put in the correct form.
y=-2x+5

6 0

3 years ago

Read 2 more answers

What is the reciprocal of 1 8/9

notka56 [123]

Answer: 9/17
Reason

The reciprocal is simply flipping the denominator and numerator of a fraction.

1-8/9 as a mixed fraction is 17/9
So the reciprocal would be to flip it,
Giving you 9/17 which is in its simplest form

6 0

2 years ago

What sample size is needed to give a margin of error within plus-or-minus 5% in estimating a population proportion with 90% conf

VARVARA [1.3K]

Answer: 271.

Step-by-step explanation:

When the prior population proportion of success is not available, then the formula to find the sample size is given by :-

$n=00.25(\dfrac{z_{\alpha/2}}{E})^2$

Given : Significance level : $\alpha: 1-0.90=0.1$

By using the standard normal distribution table ,

Critical value : $z_{\alpha/2}=1.645$

Margin of error : $E=0.05$

Then , the required minimum sample size will be :-

$n=0.25(\dfrac{(1.645)}{0.05})^2=270.6025\approx271$

Hence, the required minimum sample size is 271.

4 0

2 years ago

it takes emily 9 minutes to bycle 3/10 of the way to school. how many minutes does it take emily to bycycle all the way to schoo

Kryger [21]

Answer: 30 minutes

Step-by-step explanation: It takes 9 minutes to get 3/10 the way there, so just divide 9 by 3 to get 3, which is 1/10 the way there. Multiply 3 by 9 to get the remaining 9/10 and add to get a total of 30. Hope this helped!

6 0

3 years ago