All categories

3 years ago

Nd the value of the expression. Type a numerical answer in the space provided. 4 ∙ 1 - 3^2 ÷ 3

1 answer:

4 0

This is a problem of Arithmetic that is a branch of mathematics that consists of the study of numbers. Its main goal is the study of the traditional operations on them just as: addition, subtraction, multiplication and division. There is an order of operation to solve problems in arithmetic that is the way you choose to simplify expressions. This order is like this:

1. First. Solve Parentheses.
2. Second. Solve Exponents (and root).
3. Third. Solve Multiplication and Division
3. Fourth. Solve addition and subtraction.

So let's apply these concepts to our problem:

$4 \times 1-3^2 \div 3$

We don't have parentheses, so let's apply second step:

$4 \times 1-9 \div 3$

Applying third step:

$4-3$

Finally, applying fourth step, the result is:

$1$

You might be interested in

15 POINTS. Find the exact lateral surface area of the triangular prism. Picture included, answer in order to fill in blanks

Norma-Jean [14]

Hmm, not sure
let me solve to make sure

so the lateral area=4*8+6*8+?*8
the ? is the hyptoonuse
remember
a^2+b^2=c^2
4^2+6^2=c^2
16+36=c^2
52=c^2
sqrt both sides
2√13=c

so

LA=4*8+6*8+8*2√13=
32+48+16√13=
80+16√13

the first blank is 80
2nd is 26
3rd is 13

8 0

3 years ago

Please help this is due soonnnnn

Makovka662 [10]

Answer:

5 $\sqrt{14r}$ - $\sqrt{42r}$ / 28r

sorry I can't put a fraction but the "'/" is the line and 28r goes underneath

Explanation:

Download photomath and take a picture, it will explain it. It would take forever for me to type it out

6 0

3 years ago

Jake paid $13.50 for admission to the county fair and bought 9 tickets to play games. If he spent a total of $36, what is the co

julia-pushkina [17]

Answer:

The cost of one ticket would be $2.5, the equation I believe is 9x + 13.50 = 36.

Step-by-step explanation:

I hope this helps.

6 0

3 years ago

lys-0071 [83]

Answer:

625

Step-by-step explanation:

5x5x5x5=625

you multiply five four times because there are four groups of three in twelve

8 0

4 years ago

Scores on a standardized test are normally distributed with a mean of 480 and a standard deviation of 90. What proportion of the

Aloiza [94]

Answer:

Step-by-step explanation:

Since the scores on the standardized test are approximately normally distributed, we would apply the formula for normal distribution which is expressed as

z = (x - µ)/σ

Where

x = test scores.

µ = mean score

σ = standard deviation

From the information given,

µ = 480

σ = 90

1) The proportion of scores above 700 is expressed as

P(x > 700) = 1 - P(x ≤ 700)

For x = 700,

z = (700 - 480)/90 = 2.44

Looking at the normal distribution table, the probability corresponding to the z score is 0.99

P(x > 700) = 1 - 0.99 = 0.01

the proportion of scores above 700 is 0.01

2) For the 25 percentile, z = - 0.67. Therefore,

- 0.67 = (x - 480)/90

90 × - 0.67 = x - 480

- 60.3 = x - 480

x = - 60.3 + 480

x = 419.7

3) if Someone’s score is 600, then

z = (600 - 480)/90 = 1.33

From the table, the percentileis

0.91 × 100 = 91%

4) For x = 420,

z = (420 - 480)/90 = - 0.67

The proportion is 0.25

For x = 520,

z = (520 - 480)/90 = 0.44

The proportion is 0.67

The proportion of the score between 420 and 520 is

0.67 - 0.25 = 0.42

7 0

3 years ago