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Vika [28.1K]
3 years ago
9

Why is 7.8 an irrational number?

Mathematics
2 answers:
andreyandreev [35.5K]3 years ago
6 0
Its 78/10 = 39/5
Hope it helps :)
Nesterboy [21]3 years ago
6 0

Answer: It is a rational number

Step-by-step explanation:

any number that can be written in the form of fraction is rational number (or as   the a decimal that has a end or repeating decimal are rational number)

7.8=39/5

Hope this helps!! :)

Please let me know if you have any question

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What's the value of x? (Hint: it's not 7) and please explain
tekilochka [14]

Hey there!

4x + 7 + 35 = 90°

4x + 42 = 90°

SUBTRACT 42 to BOTH SIDES

4x + 42 - 42 = 90 - 42

CANCEL out: 42 - 42 because it give you 0.

KEEP: 90 - 42 because it help solve for the x-value.

NEW EQUATION: 4x = 90 - 42

SIMPLIFY IT!
4x = 48°

DIVIDE 4 to BOTH SIDES

4x/4 = 48/4

CANCEL out: 4/4 because it give you 1

KEEP: 48/4 because it give you the x-value

NEW EQUATION: x = 48/4

SIMPLIFY IT!

x = 12

Therefore, your answer is: x = 12


Good luck on your assignment & enjoy your day!



~Amphitrite1040:)

8 0
1 year ago
A study shows that 70 out of 200 college students read the newspaper. Marysville College has 12,600 students.
Lubov Fominskaja [6]
Your answer would be 4,410
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3 years ago
Read 2 more answers
Can someone please help me​
4vir4ik [10]

Answer:

40

Step-by-step explanation:

Two ways we can solve this problem:

1. Graphically

2. Mathematically

Because you already solved it graphically, I will show you how to do so mathematically. Of course, graphically is much much easier and more efficient in this problem.

Let's break the problem down.

First, we are given a graph which contains a slope.

To find slope, we use the technique -> rise/run

Picking 2 obvious points from the graph, we can see

1st point -> (10, 20)

2nd point -> (40, 80)

Now, let's find the slope

\frac{80-20}{40-10}  = \frac{60}{30}  = 2

Now, we have an equation y = 2x, where y = number of pies and x = cups of sugar

We want to find how many cups of sugar we need to bake 80 pies. Simply substitute 80 = number of pies = y

y = 2x -> 80 = 2x

Solving for x, divide both sides by 2

40 = x

We need 40 cups of sugar.

3 0
2 years ago
A lead ball weighs 326 grams. Find the radius of the ball to the nearest tenth of a centimeter. the lead=11.35g/cm³
lyudmila [28]

Answer:

3.14

Step-by-step explanation:

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3 years ago
determine the volume of a rectangular container van with length,width, and height of 52m,13 m and 20m respectively.
icang [17]

\huge \boxed{ \green{ANSWER}}

\underline{v = 13 \: 520 \:  {m}^{3}  }

\huge \boxed{ \red{SOLUTION}}

v = lwh \\  = (52m) \: (13m) \: (20m) \\  \implies \underline{v = \: 13 \: 520 \:  {m}^{3}  }

<h3>#CarryOnLearning</h3>

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2 years ago
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