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vladimir2022 [97]
3 years ago
15

Solve the equation show your work 3x equals 45​

Mathematics
2 answers:
natima [27]3 years ago
7 0

Answer:

x = 15

Step-by-step explanation:

3x / 3 = 45 / 3 x = 15

PilotLPTM [1.2K]3 years ago
3 0

3x = 45

We have to isolate x. To do that we must bring 3 to the right side of the equation.

How is that done?

Well you need a little bit of magic. Just kidding, you need something close to it. It's called math

Since three is being multiplied by x we have to do the opposite of multiplication to bring it over to the right side and cancel 3 from the left side. The opposite of multiplication is DIVISION so...

3x ÷ 3 = 45 ÷ 3

^^^What you do to one side you do to the other

x = 15

Hope this helped!

~Just a girl in love with Shawn Mendes

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Answer:

Step-by-step explanation:

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3 years ago
In the figure, what is the value of x?
masha68 [24]

Answer:

  90

Step-by-step explanation:

In the quadrilateral formed by two tangents and the associated radii, the central angle and the external angle are supplementary. Here, that means that x° is supplementary to itself, so must be 90°.

  x = 90

3 0
3 years ago
Identify the values that should be written to complete the X diagram.
cestrela7 [59]

Answer:

See the attachment for what goes on your X diagram.

Rewrite: x² -7x +4x -28

Grouping: (x² -7x) +(4x -28) = x(x -7) +4(x -7) = (x +4)(x -7)

Step-by-step explanation:

The given quadratic is ...

... x² -3x -28 . . . . . a=1, b=-3, c=-28

a) The value at the top of the X diagram is the product a·c = 1·(-28) = -28.

The value at the bottom of the X diagram is the coefficient b = -3.

The values on the sides of the diagram are the factors of -28 that add up to make -3. These are -7 and 4. That is, ...

(-7)·(4) = -28

(-7)+(4) = -3

b) Since the two values on the sides of the diagram add up to give "b", the value of "b" in the equation can be rewritten as the sum of these two numbers. Doing that, we have ...

... x² -3x -28

... = x² +(-7+4)x -28

... = x² -7x +4x -28 . . . . . . order does not matter. It could also be x² +4x -7x -28

c) We can group pairs of terms in the rewritten expression and factor each pair.

... = (x² -7x) +(4x -28) . . . . . first pair has a common factor of x; second pair, 4

... = x(x -7) +4(x -7) . . . . . . . these terms now have a common factor: (x -7)

... = (x +4)(x -7) . . . . . . . . . . the complete factorization of x² -3x -28

3 0
3 years ago
Write a word problem that involves combining three equal groups
ipn [44]
Combining three equal groups means that we will mainly depend on multiplying the quantity by 3 to get the total

<u><em>Examples are shown below:</em></u>
1- Mrs Nadia teaches three classes. Each class has 25 student. How many students does Mrs Nadia teach in total?
<u>In this problem</u> we will be combining three equal groups of students where each group has 25 students, therefore:
Total number of students = 3 * 25 = 75 students

2- John has three bags of candies. Each bag contains 10 pieces of candies. How many candies does John has?
<u>In this problem</u> we will be combining three equal groups of candies where each group has 10 pieces, therefore:
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Hope this helps :)
7 0
3 years ago
Read 2 more answers
Given: AABC is a right triangle.
IgorLugansk [536]

Answer:

19.365

Step-by-step explanation:

The Pythagoreum Theorum tells us that:

a² + b² = c²

where a and b are the legs and c is the hypotenuse.

BC is a leg; we'll lable it a.

AC is the hypotenuse thus labled c.

Plugging their lengths into the above formula will solve for the missing leg length.

5² + x² = 20²

25 + x² = 400

x² = 375

✓x = ✓3 x (5 x 5) x 5

x = 5✓15

x = 19.365

5 0
3 years ago
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