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3 years ago

Tap the word that "they" refers to a. birds b. frogs c. feets

2 answers:

5 0

We need a text to review. Right now we have to randomly choose between birds and frogs. “Feets” is eliminated since it is improper grammar

lions [1.4K]3 years ago

4 0

Step-by-step explanation:

we would a small text, or give us a picture so we can read it, then we can answer this question, without it, I'd have to guess

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Solve the quadratic equation 3x^2+x-5=0

irinina [24]

-1 <span>± </span><span><span>√61 / 6. Negative 1, plus or minus square root of 61 divide by 6</span></span>

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4 years ago

Len bought 12.3 ounces of cashews and 15.2 ounces of almonds.

inn [45]

Answer:A manufacturer produces nuts and bolts. It takes 1 hour of work on machine A and 3 hours on machine B to produce a package of nuts. It takes 3 hours on machine A and 1 hour on machine B to produce a package of bolts. He earns a profit of Rsl7.50

Step-by-step explanation:

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3 years ago

Read 2 more answers

X is normally distributed with a mean of 100 and a standard deviation of 15. What is the probability of randomly sampling a scor

VikaD [51]

Answer:

Using calculator: 0.0415

Using Z-score Table: 0.0418

Step-by-step explanation:

There are two ways you can solve this problem.

1. Use the normal distribution function on a calculator.

Entered values:

Lower Limit: 126

Upper Limit: 999999999999999... (To encompass all the data)

Standard Deviation: 15

Mean: 100

2. Find the Z score and look up probabilities on table.

Formula for Z score:

$Z=\frac{x-mean}{standard deviation} \\\\Z= \frac{126-100}{15}=1.7333...$

Z = 1.7333

This means that the value 126 is 1.733 standard deviations away from the mean. We can look this value up on the Z table to find its corresponding probability.

This will show us the probability of the random sampling being equal to or lower than 126.

P = 0.9582

So to find the probability of it being above, we simply just calculate the inverse as all probabilities on the curve = 1.

1-0.9582 = 0.0418

NOTE: Values found from the table will usually be a bit different from if you find it from a calculator, the one you need will depend on the method you use in class.

Hope this helped!

6 0

3 years ago

CAN SOMEONE PLEASE HELP ME!!

QveST [7]

<h2>A) Wrong</h2><h2>B) Wrong</h2><h2>C) Right </h2><h2>D) Right</h2><h2>C and D is right because when you solve the problem it ends up as - 12 - 6f. </h2><h2>But to me it is mostly C. </h2><h2>I hope this helps. </h2><h2>I tried my best </h2><h2><u>Have a great dayyyy!!! :) </u></h2>

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3 years ago

Need help. please reply with correct answers!

rjkz [21]

Answer:

a = 1, b = 0 & c = -1;

a = 1, b = 2 & c = 3

Step-by-step explanation:

a = 1, b = 0 & c = -1;

so a + b + c = 1 + 0 + (-1) = 0

1 x 0 x (-1) = 0