Ask question

Ask question

All categories

2 years ago

14

Please help me with this question:)

1 answer:

tester [92]2 years ago

3 0

Answer:

Ada is correct.

Step-by-step explanation:

Problems with Naman:

Naman is supposed to follow PEMDAS, which is the order of operations, and stands for:

Parenthesis

Exponents (& Roots)

Multiplications

Division

Addition

Subtraction

~

The mistake: Naman moved +6 to the left and added it to the 2 located on the left side of the expression. You cannot do that, as it breaks the law of PEMDAS. On the other hand, Ada did the correct thing, which was to distribute 2 to all terms within the parenthesis (as one term in the parenthesis has a variable, and the other is a constant, meaning that they cannot be combined). This leads to Naman not doing the rest of the question correct.

Next, Ada correctly combined the two constants, which resulted in 0. 0 means nothing, therefore the placeholder is not needed. Therefore, 8x is the final answer.

You might be interested in

Choose the correct simplification of the expression (2ab5)3. (1 point) Question 8 options: 1) 8ab15 2) 8a3b8 3) 5a3b15 4) 8a3b15

d1i1m1o1n [39]

Answer:

4). $8a^{3}b^{15}$

Step-by-step explanation:

The Given expression is that,

$(2ab^{5})^{3}$

On simplifying,

$(2ab^{5})^{3}$ = $(2ab^{5} )(2ab^{5}) (2ab^{5})$

= $(2^{3} ) * (ab^{5})^{3}$

= (2×2×2) × ( $ab^{5}$ × $ab^{5}$ × $ab^{5}$ )

= $8a^{3}b^{15}$

Thus, <u>option 4</u> i.e. $8a^{3}b^{15}$ is the correct simplification of the given expression.

4 0

2 years ago

The propeller blades on a submarine have a radius of 6 feet. At full speed, they turn at 120 revolutions per minute. What is the

bogdanovich [222]

Using proportions, it is found that the angular velocity at the tip of the blade is of 753.98 radians per minute.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

Each revolution has $2\pi$ radians, hence in one minute, the 120 revolutions will have a measure in radians of:

M = 120 x 2pi = 240pi = 753.98

Hence the angular velocity is of 753.98 radians per minute.

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

8 0

1 year ago

A triangle has two sides of 7 and 12 what value could the length of the third side be

mezya [45]

It would be D:7
It needs to have one side bigger than

7 0

2 years ago

Each of the 20 employees in an office took a 60 point test on office safety. The test scores are listed in the table below. Whic

madam [21]

Answer:

There is no table

Step-by-step explanation:

But to construct a histogram, we use frequence on the y-axis and class boundaries on the x-axis

7 0

2 years ago

What percent of 30,000 equals 22,500

Brrunno [24]

Divide 22,500 by 30,000 and multiply by 100 as follows:
$\frac{22500}{30000}\times100=75%$

4 0

2 years ago