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4 years ago

What is 23% turned into a decimal

Mathematics

2 answers:

german4 years ago

5 0

Answer:

0.23

Step-by-step explanation:

Percentage to decimal conversions are so fun and there's a simple rule to it! Pretend that there is a decimal at the end of the percentage value (23.%). Just move that imaginary decimal over two spots to the left so it turns into 0.23. That's the answer in decimal form. If you need further explanation, I'd be happy to help!

weeeeeb [17]4 years ago

4 0

The answer is 0.23 if the percentage is out of 100

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-2(7a+ 9b) = –14a + [?]b

OverLord2011 [107]

Answer:

-18

Step-by-step explanation:

Left Hand Side = -2(7a + 9b) = -14a - 18b

Comparing it with Right Hand Side, ? = -18

3 0

3 years ago

Read 2 more answers

One number is four times another number and their difference is 24 find the numbers

Ivan

Well if you think about it, you are given 2 equations. lets say the 2 numbers ar x and y

it says one number that we willl call y is 4 times another number we will call x. so:
y = 4 * x

the other part says their difference is 24. well y has to be the larger number sincenit is 4 times x. so:
y - x = 24

in the first part i said y = 4x so i know what y equals. i can plug this into thenother equation like this
y - x = 24
(4x) - x = 24
3x = 24
x = 8

i have x. i can plug this in first equation to find y
y = 4x
y = 4 (8)
y = 32

we can checj by plugging in x and y to both equations. if it matches we are.good

y = 4x
32 = 4 (8)
32 = 32

y - x = 24
(32) - (8) = 24
24 = 24

it all works out

8 0

3 years ago

What value in the replacement set is a solution to this equation? 3(n+7)=48. Replacement set {8,9,10.

Studentka2010 [4]

So if the 3 is on the outside of the parenthesis 3( it means you have to multiply 3 times the numbers inside the parenthesis. 3 X n+7 + 3n + 21. hope this hint helps.

6 0

4 years ago

Read 2 more answers

The junior and senior class officers are sponsoring a homecoming dance. The total cost for the facilities and catering is $45 pe

larisa86 [58]

Answer:

Domain is (0,∞)

Range is (45, ∞)

Step-by-step explanation:

Let x represents the number of persons and f(x) represents the average cost per person,

∵ Fixed cost = $ 2500

Also, additional cost is $ 45 per person,

So, the total cost for x persons ( in dollars ) = fixed deposit + additional cost for x persons,

= 2500 + 45x

$\text{Average cost for x persons}=\frac{\text{Total cost}}{x}$

$\implies f(x)=\frac{2500+45x}{x}$

Which is a rational function,

∵ A rational function is defined for all real numbers except those for denominator = 0

Denominator of f(x) = x

So, f(x) is defined for all real numbers except x ≠ 0,

Now, the cost can not be negative,

⇒ x > 0

Hence, the domain for f(x) is (0, ∞)

Again,

$f(x)=45+\frac{2500}{x}$

If $x\rightarrow \infty$

$f(x)\rightarrow 45$

So, 45 < f(x) < ∞

i.e., range of f(x) is (45, ∞)

5 0

3 years ago

Cora is building towers of two different sizes using prism- and pyramid-shaped blocks. The diagram shows the ratio of prisms and

Musya8 [376]

There are 20 blocks needed for tower A, and 43.75 blocks needed for tower B

From the tape diagrams, we have the following ratio

Prism : Pyramid = 4 : 1

From the table, we have:

Tower A = 16 prisms

So, the ratio becomes

16 : Pyramid = 4 : 1

Multiply the ratio on the right-side by 4

16 : Pyramid = 16 : 4

By comparison, we have:

Pyramid = 4

This means that, 4 pyramid blocks are needed for tower A

So, the total number of blocks needed is:

Total = Pyramid + Prism

This gives

Total = 4 + 16

Evaluate the sum

Total = 20

Hence, there are 20 blocks needed for tower A

For table B, we have:

Tower A = 35 prisms

So, the ratio becomes

35 : Pyramid = 4 : 1

Express as fractions

$\frac{Pyramid}{35} = \frac 14$

Multiply through by 35

Pyramid = 8.75

This means that, 8.75 pyramid blocks are needed for tower B

So, the total number of blocks needed is:

Total = 8.75 + 35

Evaluate the sum

Total = 43.75

Hence, there are 43.75 blocks needed for tower B