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2 years ago

When you write a numerical expression how can you show which operation to do it first?

Mathematics

1 answer:

kenny6666 [7]2 years ago

7 0

Answer:

parentheses come first

Step-by-step explanation:

Parentheses are symbols that group things together. This becomes very important in numerical expressions, because operations inside parentheses are always completed first when evaluating the expression. Let's review the order of operations. You can see that, according to the order of operations, parentheses come first.

You might be interested in

What is the radius of a circle with an area of 78.5 cubic inches? Use 3.14 for pi. Enter your answer in the box.

Korvikt [17]

Answer:

r =5 in

Step-by-step explanation:

Area of a circle is given by

A = pi r^2

We know the area and pi

78.5 = 3.14 r^2

Divide by 3.14

78.5/3.14 = 3.14 /3.14 r^2

25 = r^2

Take the square root of each side

sqrt(25) = sqrt(r^2)

5=r

4 0

2 years ago

Read 2 more answers

What is the value of the y-coordinate of point A

kap26 [50]

Answer: $-\dfrac{1}{2}$

<u>Step-by-step explanation:</u>

The coordinate at -30° <em>(-30° = 330°)</em> = $\bigg(\dfrac{\sqrt3}{2},-\dfrac{1}{2}\bigg)\\$

the x-value is $\dfrac{\sqrt3}{2}$

the y-value is $-\dfrac{1}{2}\\$

6 0

2 years ago

PLZ HELP

Aleks04 [339]

Answer:

it is one those part to part explane

Step-by-step explanation:

4 0

1 year ago

Need help please thanks!

Ilya [14]

Answer:

Step-by-step explanation:

<B = 360 - <A

<B = 360 - 170

<B = 190

There are two angles present, depending on which way you look at it. One is larger than 180 (the one we found) and the other is slightly less than 180 (the one you gave us).

4 0

2 years ago

PLEASE HELP

jeka94

Answer:

91.92%

Step-by-step explanation:

Given that:

Mean (μ) = 6.2, standard deviation (σ) = 1.5

Z score is a measure in statistics to determine the relationship of a measured value with the mean. It is given by the equation:

$z=\frac{x-\mu}{\sigma}$

To calculate the probability that a patient has a blood test result less than or equal to 8.3, we need to calculate the z score of 8.3

For x = 8.3, the z score is:

$z=\frac{x-\mu}{\sigma}=\frac{8.3-6.2}{1.5} =1.4$

From the probability distribution table:

P( x ≤ 8.3) = P(z < 1.4) = 0.9192 = 91.92%

7 0

2 years ago