If dave buys a sample of 70 nails and 6 are bad and 64 are good and he needs 2500 good nails how many nails should dave buy

Mathematics

1 answer:

dexar [7]4 years ago

5 0

Answer:

$Dave\ should\ buy\ 2735\ nails.$

Step-by-step explanation:

$Number\ of\ nails=70\\\\Good\ nails=64\\\\percentage\ of\ good\ nails=\frac{good\ nails}{total\ nails}\times 100\\\\percentage\ of\ good\ nails=\frac{64}{70}\times 100\\\\percentage\ of\ good\ nails=91.42857\%\\\\Let\ for\ 2500\ good\ nails\ he\ has\ to\ buy\ x\ nails\\\\91.42857\%\ of\ x=2500\\\\\frac{91.42857}{100}\times x=2500\\\\x=\frac{2500}{0.9142857}=2734.375\\\\x\approx 2735$

You might be interested in

The following number line contains the points A, B, C, D, and E.

Troyanec [42]

The probability that a point chosen at random on AE is on AB is 1/5

<h3>What is a Number Line?</h3>

This refers to the line that shows numbers from left to right and is marked at intervals that are negative to the left and positive to the right.

Based on the keen observation, there are 10 line segments that have an equal length and from the two points, there are two equal line segments,

So, the probability that a random point would fall between A and B is:

Number of line segments between AB/ number of line segments between AE

= 2 /10

= 1/5

Read more about number lines here:

brainly.com/question/24644930

#SPJ1

3 0

2 years ago

a suit cost $95 Barry has a discount coupon for 10% off and the city has a 4.5 percent sales tax what is the final cost of the s

SIZIF [17.4K]

SO the suit cost $95 and it has a discount of 10%
so 95*10/100=9.5
so 10% of 95 is 9.5
subtract 9.5 from 95 and that equals 85.5
then you have to add 4.5 percent sales tax
so 85.5+ 4.5%= 89.347
So the final cost would be $89.34

3 0

4 years ago

Graph this function: f(x)=x2-4x-5

Maksim231197 [3]

A would be 1 as b would be -4