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victus00 [196]
2 years ago
14

PLZ PLZ PLZ HELP ME I REALLY NEED YOUR HELP

Mathematics
1 answer:
QveST [7]2 years ago
7 0

Answer:

4 cups of water

Step-by-step explanation:

If there are 3 cups of water and 3/4 cups of sugar than there is 1/4 of a cup of sugar per cup of water so if you times that by 4 to get 1 cup of sugar you have 4 cups of water!

can you make this brainliest if its Right?

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Latrell is going to put chocolate ice cream in x bowls for his friends. He will put 0.75 cups of ice cream in each bowl. Which e
krek1111 [17]

Answer:

0.75 cups of ice cream

x bowls

t is the total number of cups of ice cream

.75x = t

example"

If you have 5 bowls.

.75 (cups of ice cream) * 5 (bowls) = 3.75 cups of ice cream needed

Step-by-step explanation:

6 0
3 years ago
A math professor notices that scores from a recent exam are normally distributed with a mean of 61 and a standard deviation of 8
Alexeev081 [22]

Answer:

a) 25% of the students exam scores fall below 55.6.

b) The minimum score for an A is 84.68.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 61 and a standard deviation of 8.

This means that \mu = 61, \sigma = 8

(a) What score do 25% of the students exam scores fall below?

Below the 25th percentile, which is X when Z has a p-value of 0.25, that is, X when Z = -0.675.

Z = \frac{X - \mu}{\sigma}

-0.675 = \frac{X - 61}{8}

X - 61 = -0.675*8

X = 55.6

25% of the students exam scores fall below 55.6.

(b) Suppose the professor decides to grade on a curve. If the professor wants 0.15% of the students to get an A, what is the minimum score for an A?

This is the 100 - 0.15 = 99.85th percentile, which is X when Z has a p-value of 0.9985. So X when Z = 2.96.

Z = \frac{X - \mu}{\sigma}

2.96 = \frac{X - 61}{8}

X - 61 = 2.96*8

X = 84.68

The minimum score for an A is 84.68.

8 0
3 years ago
Given f(x) = -x + 5, find f(-3).<br> Answer:
user100 [1]

Hey there!

<u>Find </u><u>f(</u><u>-</u><u>3</u><u>)</u><u> </u><u>:</u>

  • Answer :

f(-3) = 8 ✅

  • Explanation :

f(x) = -x + 5

<em>></em><em>></em><em> </em><em>Substitute </em><em>-</em><em>3</em><em> </em><em>for </em><em>x </em><em>in </em><em>f(</em><em>x)</em><em> </em><em>:</em><em> </em>

f(-3) = -(-3) + 5

f(-3) = 3 + 5

f(-3) = 8

Therefore, your answer is f(-3) = 8

Similar question :

↣ brainly.com/question/20922457

8 0
2 years ago
Read 2 more answers
Mathematical connection A lighthouse casts a revolving beam of light as far as the pier
Alexandra [31]

The light's coverage area is given mathematically as i.e. Area=\pi d^{2}

Given that a lighthouse casts a revolving beam of light as far as they peir and asked the area is covered.

The revolving beam of light covers the whole space i.e entirely 360°

I.e. it forms a circle-like region

Area of circle = \pi r^{2}{ where r is the radius of circle}

Let's assume the distance traveled by light as "d"

as it forms a circular region, it forms a circle of radius "d"

Mathematical connection i.e. area of the region

⇒area of circular region=\pi d^{2} {where d is the radius of region}

Learn more about area here:

brainly.com/question/27683633

#SPJ9

4 0
1 year ago
Log x+log7=log 42 solve please
viva [34]
Log x+ log 7= log 42
log x=log 42 - log 7
log x=log 42/7                [  log a -  log b= log (a/b)   ]
log x= log 6

therefore:
x=6

Answer: x=6
3 0
3 years ago
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