All categories

4 years ago

Simplify 4 • ( -3) • 5

Mathematics

2 answers:

defon4 years ago

5 0

Well 4*-3 =-12 but then multiply that by five you will get -60

jekas [21]4 years ago

5 0

To simplify this, the only thing we have to do is multiply all the quantities together. Since they are all connected by multiplication, it doesn't matter in which order we do it. Therefore, it might be helpful to multiply 4 and 5 first (because then we have a number with a zero at the end of it). 4 * 5 is 20. Now the expression is 20 * -3. 20 * 3 is 60, but 20 * -3 is -60 (because a positive number times a negative number is negative). That means that the answer is -60.

You might be interested in

a school ruler has metric on one side and customary units on the other .if the ruler is 12 inches long how many centimeters long

JulijaS [17]

And the conversion for the inch to the centimeter is 1 inch = 2.54 cm exactly. So, in the same vCalc conversion equation (Length Conversion), if you input 1 inch, you get out 2.54 cm. So, he rephrased answer to your question is: there are 30.48 centimeters on a standard 12 inch ruler.

7 0

4 years ago

What is greater 3/8 or 3/4?

blondinia [14]

Hi There Mama,

<span>What is greater 3/8 or 3/4?

</span> $\frac{3}{4}$ will be greater than $\frac{3}{8}$ !

Example:Think of it as pieces of pie. One pie is cut evenly into 4 pieces, and three of them are still there. (this is 75% of the pie)the other one is cut into 8, twice as many cuts as the other pie, yet has 3 small pieces. 3/8 has less than half the pie left....

6 0

3 years ago

Read 2 more answers

Brian paid $28 for 13 gallons of gasoline.To the nearest cent, how much did one gallon of gasoline cost?

GaryK [48]

Brian paid $2.15 for each gallon of gasoline. So $2.15/gallon.

6 0

3 years ago

If you draw a card with a value of 4 or less from a standard deck of cards, I will pay you 165$ if not your pay me $45. (Aces ar

jekas [21]

Answer: The required expected value is $3.46.

Step-by-step explanation:

Since we have given that

Number of value of 4 or less are

2,3,4

So, there are 12 in numbers.

So, probability would be

$\dfrac{12}{52}$

Since Aces are considered as the highest card in the deck.

So, remaining probability would be

$\dfrac{40}{12}$

Amount paid or value of 4 or less = $165

Amount not paid for other case = $45

So, the expected value would be

$\dfrac{12}{52}\times 165-\dfrac{40}{52}\times 45\\\\=\dfrac{1980}{52}-\dfrac{1800}{52}\\\\=\dfrac{180}{52}\\\\=3.46$

Hence, the required expected value is $3.46.

7 0

3 years ago

Suppose SAT Writing score are normally distributed a mean of 497 and a standard deviation of 114. A university plans to admit st

Olin [163]

Answer:

The minimum score required for admission to the nearest whole number = 557

Step-by-step explanation:

We solve this using z score formula.

z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation.

Top 30% of the candidates is a ranking that is equivalent to = 100 - 30% = 70th percentile.

The z score of 70th percentile = 0.524

Mean = 497

Standard deviation of 114.

Minimum score = raw score = ???

Hence:

0.524 = x - 497/114

Cross Multiply

0.524 × 114 = x - 497

59.736 = x - 497

x = 59.736 + 497

x = 556.736

The minimum score required for admission to the nearest whole number = 557

7 0

4 years ago