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3 years ago

Simplify: 3 · 32 + 8 ÷ 2 − (4 + 3)

Mathematics

2 answers:

lisabon 2012 [21]3 years ago

8 0

Answer:

Step-by-step explanation:

3 · 32 + 8 ÷ 2 − (4 + 3)

PEMDAS says parentheses first

3 · 32 + 8 ÷ 2 − (7)

Then multiply and divide from left to right

96 + 4 -7

Then add and subtract

100-7

Law Incorporation [45]3 years ago

3 0

Answer: 93

Step-by-step explanation:

To solve this we need to follow BIDMAS.

The order of calculations is brackets, division, then multiplication, then addition, then subtraction.

1) (4 + 3) = 7

2) Division: 8 / 2 = 4

3) Multiplication: 3 * 32 = 96

This leaves us with:

96 + 4 - 7

This equals 93.

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3 years ago

Let g(x) = x² - 3 and h(x) = 2x + 5. Find g(h(x)).

Arisa [49]

Answer: $4x^2+20x+22\\\\$

========================================

Work Shown:

$g(x) = x^2 - 3\\\\g(h(x)) = (h(x))^2 - 3\\\\g(h(x)) = (2x+5)^2 - 3\\\\g(h(x)) = (2x+5)(2x+5) - 3\\\\g(h(x)) = 4x^2+10x+10x+25 - 3\\\\g(h(x)) = 4x^2+20x+25 - 3\\\\g(h(x)) = 4x^2+20x+22\\\\$

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7 0

3 years ago

Joseph asked students in his homeroom class how many songs that have on their MP3 players. His data is recorded in the table bel

Neporo4naja [7]

Answer:

Step-by-step explanation:

Boys:

Q1: 78

Q3: 140

IQR: 140 - 78 = 62

Girls:

Q1: 97

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IQR: 180 - 97 = 83

Difference:

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5 0

3 years ago

Math problem I need help

Gemiola [76]

Answer:

Associative property

Step-by-step explanation:

<u>The given property is:</u>

A + (B + C) = (A + B) + C

which is called "associative property of addition".

Hence, this property is used in the given expression which is "rearranging the parenthesis does not affect the result."

$\rule[225]{225}{2}$

Hope this helped!

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2 years ago

The image of (6, 9) under a dilation is (4, 6).<br> The scale factor is<br> 0-2<br> O 2/3<br> 0 -2/3

lisov135 [29]

Answer:

$\frac{2}{3}$

Step-by-step explanation:

To determine the scale factor consider the ratio of the image coordinates to the original coordinates, that is

scale factor = $\frac{4}{6}$ = $\frac{6}{9}$ = $\frac{2}{3}$

7 0

3 years ago