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3 years ago

A is 2 times older than B. Identify the appropriate expression.

Mathematics

1 answer:

-Dominant- [34]3 years ago

6 0

Answer:

C. 2x

Step-by-step explanation:

Let

B's age = x years

A's age = 2 times older than B

= 2 * x

= 2x years

A's age = 2x years

For instance, if B's age is 17 years

Then,

A's age = 2x

= 2(17)

= 34 years old

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Evaluate the expression

ruslelena [56]

Answer: 85

Step-by-step explanation:

To solve this problem, we want to use the order of operations, or PEMDAS.

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Add

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To be more specific, you evaluate the expression in the order from top to bottom. To clarify, it is multiply OR divide, depending on which comes first, left to right. This also applies to add OR subtract.

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4 years ago

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Z=? Help me guys I’ll give you points

Dahasolnce [82]

Answer:

180

Step-by-step explanation:

6 0

3 years ago

PLEASE HELP FAST!!! A ladder leans against a building. The top of the ladder reaches a point on the building, which is 18 feet a

weeeeeb [17]

The measure of the angle of elevation from the ground to the top of the ladder is 68.73 degrees

<h3>Angle of elevation and depression</h3>

These method is used to determine the side and angles of a triangle

From the question given, we have the following parameters

Base of the building = 7feet (Adjacent side)

Height of the building = 18 feet (Opposite side)

Required

angle of elevation of the building

Using the SOH CAH TOA identity

tanФ = opp/adj

tanФ = 18/7

Ф = 68.73 degrees

Hence the measure of the angle of elevation from the ground to the top of the ladder is 68.73 degrees

Learn more on angle of elevation here: brainly.com/question/88158

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3 0

2 years ago

A jewelry box is designed such that its length is twice its width and its depth is 2 inches less than its width the volume of th

Sedaia [141]

Answer:

$Volume = 2x^{3}-4x^{2}$

Step-by-step explanation:

Let x be the width of the jewellery box

Given:

Length of the box is twice its width

Length of the box = $2\times width$

Length of the box = $2\times x= 2x$

depth of the box is equal to 2 inches less than its width.

depth of the box = $width-2$

depth of the box = $x-2$

The volume of the box is 64 inches.

Solution:

We know that the formula of the volume is.

$Volume = length\times width\times depth$

Now we substitute all known value in above.

$Volume = 2x\times x\times (x-2)$

$Volume = 2x^{2}(x-2)$

$Volume = 2x^{3}-4x^{2}$

Therefore, the equation of the volume of the box is.

$Volume = 2x^{3}-4x^{2}$

5 0

3 years ago

One student wrote (2 1/2)2 = 4 1/4 What mistake do you think they made and how would you help them fix their mistake?

tatiyna

the multiplied the 2 in 1/2 but not the whole thing and i would solve it like this

2 1/2 × 2 = 5

3 0

3 years ago