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777dan777 [17]
3 years ago
12

Which expression can be used to model the phrase “ the sum of three and a number”?

Mathematics
2 answers:
olga nikolaevna [1]3 years ago
5 0

Answer:

x + 3

Step-by-step explanation:

A 'sum' means addition, 'a number' is represented by a variable, in this case, I chose 'x'.  I could have picked any variable I wanted.

The sum of three and a number means:  three plus some number, which is

 3 + x       in math language.     We write variables before constants, so it gets

                  rewritten as x + 3

Oliga [24]3 years ago
5 0

Answer:

A) 3 + x

Step-by-step explanation:

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Step2247 [10]

Answer:

2

Step-by-step explanation:

it's literally 6-4 = 2

8 0
3 years ago
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if you are 15 years old now, which equation could be used to solve for your age, y, 12 years from now ?
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Answer:

Hi there!

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3 years ago
If the area of AABC is D, give the expressions that complete the equation for the measure of ZB?
Ira Lisetskai [31]

Given:

The figure of triangle ABC.

The area of the triangle ABC is D.

m\angle B=\sin ^{-1}(\dfrac{m}{n})

To find:

The value of m and n in the given expression.

Solution:

Let h be the height of the triangle ABC.

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Where, b is the base and h is the height of the triangle.

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\dfrac{2D}{a}=h                  ...(i)

In a right angle triangle,

\sin \theta =\dfrac{Perpendicular}{Hypotenuse}

\sin B =\dfrac{h}{c}

\sin B =\dfrac{1}{c}\times \dfrac{2D}{a}              [Using (i)]

\sin B =\dfrac{2D}{ac}

m\angle B =\sin ^{-1}\dfrac{2D}{ac}            ...(ii)

We have,

m\angle B=\sin ^{-1}(\dfrac{m}{n})          ...(iii)

On comparing (ii) and (iii), we get

m=2D

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6 0
3 years ago
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Step-by-step explanation:

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ella [17]
 Ok so, I assume this is 6 times 501
     501
   x    6
-------------
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5 x 6 = 30
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6 x 1 = 6


3 0
3 years ago
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