200 Answered Questions for the topic Test Preparation

03/10/21

#### This is an urgent question!

X is a normally distributed random variable with mean 60 and standard deviation 22. What is the probability that X is between 25 and 95? (A) 88.84%(B) 68.44% (C) 78.44%(D) 78.84% (E) All is...
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03/10/21

#### The probability a person is infected by certain cold virus is 0.2.

If a random sample of 12 people is taken, what is the probability that at least one person will be infected by the cold virus?(A) 0.2062(B) 0.9313(C) 0.2400(D) 0.0687

03/10/21

#### I really need this

A normal distribution has a mean of 0.40 and standard deviation of 0.028. What percentage of observations will live between 0.372 and 0.428?

02/01/21

#### C programming test help please

file:///C:/Users/kamau/Downloads/Test1RealTestSpring21cop3223.pdfPlease help me with solving this test Thank you

Test Preparation

01/15/21

#### My test Failure

i do well on homework and classwork but not my test my GPA is a 4.0 but my test grades are anything but high i just need to understand why.

#### how to find the mass ?

you have a sheet of aluminum that has a volume of 9 cm3 and a density of 2.7 g/cm3 calculate the mass of that sheet of aluminum

11/04/20

#### From 500 to 630 on GMAT within a month

Hi everyone, I want to ask the experts: Is it really approachable to get 630 on the Gmat with studying for 1 month giving that I got recently 500 in a mock test? I have 34V and 27Q. I perform...
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#### math help test prep 💆🏻♀️💆🏻♀️💆🏻♀️💆🏻♀️

b/c = a;c dfg = h;f 2x + 3y = 12;y abc = 1/2;b 8(x - a)= 2(2a - x);x 12(m + 3x) = 18(x - 3m);m v= 1/3pir2h;hv= 1/3pir2(h - 1);h y(a - b) = c(y + a);y x = 3(y - b)/m ; y f = -Gm/r2;G

#### solving the equation is so much easier than having to build it by a word problem :(

A scientist needs 10 liters of a 20% acid solution for experiment, she only has a 5% solution and a 40% solution. To the nearest 10th of the liter, about how many liters of the 5% and the 40%...
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#### test preparation 💆🏻♀️💆🏻♀️

a scientist makes an acid solution by adding drops of acid to 1.2 L of water. the final volume of the acid solution is 1.202 L, assuming the volume is each drop is 0.05 mL, how many drops were...
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10/14/20

#### test preparation 💆🏻♀️💆🏻♀️

there are 9 bottles in devins refrigerator. he adds 3 full boxes of water bottles to the refrigerator, then he adds 2 more boxes that each has 1 fewer bottle than a full box, when he’s done there’s...
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#### for test preparation 💆🏻♀️💆🏻♀️

a bee flies at 6 feet per second directly to a flowerbed from its hive. the beef stays at the flowerbed for 14 minutes and then flies back to the hive at 4 feet per second, it’s away from the hive...
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#### sometimes i still don’t know how to do these types of problems

A scientist wants to determine if a type of yeast will make a cake rise. The scientist bakes one cake with the yeast and one cake without the yeast. Which of the following is the variable in this...
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#### remind me please i don’t remember well

Find the approximate side length of a square game board with an area of 128 in2

#### which of the following is an equation of the line that passes through the point (-2,3) and is it’s perpendicular to the graph of the equation y= 3x - 2

a. y = -1/3x + 7/3 b. y = -1/3x + 11/3 c. y = 3x + 9 d. y= 3x - 3

#### this question hurts my brain

dylan walks into a video arcade with a pocket full of quarters. He spends them at a rate of nine every half hour until he runs out. If the amount of quarters Dylan has is graphed overtime, which...
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#### how many bottles are there?

The equation 3w + 4j = 39 is used to determine the number of water bottles W and the number of juice bottles J that can be bought for $39. If you purchase 6 bottles of juice, how many bottles of...
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07/22/20

#### Please answer quickly

A tank is 4/5 full of water. 40 pounds more water is used to fill the tank completely. How much is the capacity of the tank in pounds?

07/20/20

#### Please answer quickly

In my bag 1/3 of the quarters is the same as 2/5 of the dimes. I have 8 more quarters than dimes. How many coins do i have

06/08/20

#### Help with this math problem. I appreciate it !

Negociar invest a total of 31,500 in two accounted The first account earned a rate of return of 11% (after a year). However, the second account suffered a 9% loss in the same time period. At the...
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Test Preparation Study Skills

05/13/20

#### How do I ace standardized tests?

Test Preparation Math

03/03/20

#### e/r=i solve for r

why can't you multiply by 1/e to both sides? I got r = i/e but the equations aren't equivalent.

Test Preparation Math

02/25/20

#### What is the difference between ASA and AAS triangles and how do you read those triangles

Test Preparation Psat 8/9

01/30/20

#### PSAT 8/9 tutoring

Do you have experiance in tutoring PSAT 8/9 test?

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