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3 years ago

Help please ten points I’ll mark brailiest

Mathematics

1 answer:

Mama L [17]3 years ago

7 0

KJ, IK, HI, HK, then HJ

i think this is it. hope it helps!! :)

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X +y=9.0<br> 0.50x+0.20y=3.30<br> Find the values of x and y

8_murik_8 [283]

Answer:

x=5&y=4

Step-by-step explanation:

lookbit may help

5 0

3 years ago

A random sample of 10 chocolate energy bars of a certain brand has, on average, 230 calories per bar, with a standard deviation

Troyanec [42]

Answer:

The confidence interval for the true mean calorie content is

$215$

Step-by-step explanation:

In this problem we know the mean and standard deviation fo the sample, so we can compute the CI like this:

$\bar{x}-t*s/\sqrt{n}< \mu$

We need to determine t for 10-1=9 degrees of freedom and 99% confidence level. We look up in the t-table and the value for t is 3.2498.

Then we can calculate the limits of the CI:

$\bar{x}-t*s/\sqrt{n}< \mu$

5 0

4 years ago

Which expression is equivalent to

algol [13]

Answer: B
Hope this helps!!

5 0

3 years ago

The cost of purple dye has been increasing over the last few months, and Robyn uses this dye as part of her tie dye scarf busine

joja [24]

The lowest percentage increase in the cost of dye that would make the scarves unprofitable is 42%

<h3>How to calculate the percentage?</h3>

(Price- Unit Cost)/Price= 20% or 0.2

Price- Unit Cost= 0.2 Price

0.8 Price = Unit Cost

Let Unit Cost be x

Price = x/0.8= 1.25x

Dye is 60% of unit costs= 0.6x

Cost of remaining material= 1 - 0.6x = 0.4x

Unit Cost= Cost of Dye+ Cost of remaining material

So, in order to become unprofitable, Unit Cost must be 1.25x

Therefore

1.25x= Maximum cost of dye+ 0.4x

Maximum Cost of Dye = (1.25-0.4)x = 0.85x

Percentage change in cost of dye= {(0.85x-0.6x)/0.6x}*100= 41.66 or 42%

Therefore, theowest percentage increase in the cost of dye that would make the scarves unprofitable is 42%.

Learn more about percentages on:

brainly.com/question/24877689

#SPJ1

6 0

2 years ago

What percentage is 285 feet of an acre

Aleksandr-060686 [28]

Since there are 43560 feet in an acre, 285 feet is 0.654% of an acre.
Hope this helps!

6 0

4 years ago

Read 2 more answers