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3 years ago

How do you work out Ratio problems involing simplifying?

1 answer:

5 0

Ok, so I'll make an example problem to show.

There's a forest in town and it's recorded that there are 5 bears and 100 squirrels in it.

First, you would make this a ratio so that would be 5:100. 5 being the bears and 100 being the squirrels.

To simplify it, just make it into a fraction. The first number, going from left to right, would be the numerator and 100 would be the denominator.

5
-----
100

To simplify, just divide by the greatest common factor which would be 5 in this case.

5 1
----- / 5 = ----
100 20

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The written portion of bens driving test had 40 questions Ben correctly answered 12 more questions than he missed how many quest

lilavasa [31]

We wil name x to the amount of correctly answered questions. Then, we get:

$(x-12)+x=40$ $2x-12=40$ $2x=40+12$ $2x=52$ $x=\frac{52}{2}$ $x=26$

Ben had 26 correct answers, so he missed 40-26= 14.

4 0

1 year ago

Write the equation for the line that passes through (-6, 1) and is perpendicular to

Dahasolnce [82]

Answer

(3,-2)

Explanation step by step

y= -2x-9

= -2(-6,1)-9

= (12,-2)-9

=(3,-2)

8 0

3 years ago

I'm not sure how I'm supposed to use this equation.can someone help me and explain?

masha68 [24]

So QRS equals to 158 degrees. Therefore, you need to do 8x+8+2x=158. This is so then you can find x. In order to find x, you'll need to combine the 2x and 8x(10x+2=158). Then subtract 2 from both sides(10x=156). Finally divide by 10(x=15.6). In order to find TRS, multiply 15.6 by 2 to get the angle measure. If you want to find QRT, plug 15.6 into the equation(multiply 8 and 15.6 and add 8=132.8)

6 0

3 years ago

A sandwich shop has 60 stores and 90% of the stores are in California. The rest of the stores are in Nevada.

VladimirAG [237]

Answer:

so there are 54 stores in CA and6 in navada

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

A pharmaceutical company receives large shipments of aspirin tablets. The acceptance sampling plan is to randomly select and tes

EleoNora [17]

Answer:

a) The probability that this whole shipment will be accepted is 30%.

b) Many of the shipments with this rate of defective aspirin tablets will be rejected.

Step-by-step explanation:

We have a shipment of 3000 aspirin tablets, with a 5% rate of defects.

We select a sample of size 48 and test for defectives.

If more than one aspirin is defective, the batch is rejected.

The amount of defective aspirin tablets X can be modeled as a binomial distribution random variable, with p=0.55 and n=48

We have to calculate the probabilities that X is equal or less than 1: P(X≤1).

$P(X\leq1)=P(X=0)+P(X=1)\\\\\\P(0)=\binom{48}{0}(0.05)^0(0.95)^{48}=1*1*0.0853=0.0853\\\\\\P(1)=\binom{48}{1}(0.05)^1(0.95)^{47}=48*0.05*0.0897=0.2154\\\\\\P(X\eq1)=0.0853+0.2154=0.3007$

3 0

4 years ago