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3 years ago

Five less than the quotient of a number and 4 is 15. what is the number?

Mathematics

1 answer:

aleksklad [387]3 years ago

8 0

Answer:

Let x be the number;

We solve the equation x ÷ 4 - 5 = 15;

Then x ÷ 4 = 20;

Finally x = 80;

Step-by-step explanation:

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What number multiplied by 4/7 has a product of 1

Tanzania [10]

Answer:

7/4

Step-by-step explanation:

As multiplying 4/7 by 7/4 give 28/28 which is equivalent to 1.

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2 years ago

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What is the inverse of the given coordinates: (-2, 2) (3, 0) (7,7) *

Nana76 [90]

Answer:

$2. - 2 \\ - 3.0 \\ - 7. - 7$

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2 years ago

If j = k, then j + 9 = k + 9 represents which algebraic property

sleet_krkn [62]

Answer:

c) The given expression represents Addition Property of Equality.

Step-by-step explanation:

Here, the given expression is j = k

Now by ADDITION PROPERTY OF EQUALITY:

The property that states that if you add the same number to both sides of an equation, the sides remain equal.

So, if A = B ⇒ A + x = B + x

Now, here given that j = k

If we add the same number 9 on both the sides, the equation remains undisturbed.

⇒ j + 9 = k + 9

Hence, the above expression represents Addition Property of Equality.

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3 years ago

If k(x) = 5x – 6, which expression is equivalent to (k + k)(4)?. . 5(4 + 4) – 6. 5(5(4) – 6) – 6. 54 – 6 + 54 – 6. 5(4) – 6 + 5(

Dmitrij [34]

K(x) = 5x-6
(k+k)(x) = k(x) + k(x) = 5x-6 +5x-6
just plug in x = 4,
(k+k)(4) = 5(4) -6 + 5(4) -6
thats your answer, the last option.

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2 years ago

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Scores on a recent exam followed a normal distribution and letter grades will be assigned with 15% A, 35% B, 30% C, 15% D, and 5

noname [10]

Using the normal distribution, it is found that Sue will get a letter grade of B.

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

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

It 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, which is the percentile of X.

In this problem, Sue got a grade of 0.85, hence $z = 0.85$ .

Looking at the z-table, z = 0.85 has a p-value of 0.8023, hence she is approximately in the top 20%, which is below the top 15% but above the top 50%, hence she got a letter grade of B.

A similar problem is given at brainly.com/question/25745464

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2 years ago