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valentina_108 [34]
3 years ago
9

HELP IN THIS QUESTION

Mathematics
2 answers:
Zinaida [17]3 years ago
8 0
The answer is 20 questions.
uysha [10]3 years ago
7 0

Given:

80% correctly; if 16 correct, what is the total?

16/y = 80/100

cross muliply

16 x 100 = 80 x y

1600 = 80y

Divide 80 on either sides.

1600 / 80 = 80y / 80

80 and 80 cancels out.

20 = y

16/20 x 100 = 80%

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Answer:

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Step-by-step explanation:

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Please Solve. Thanks.
GalinKa [24]

Answer:

Option C, Y and Z appear to be parallel lines

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3 0
3 years ago
What is the domain of the function y = 2 StartRoot x minus 5 EndRoot?
Juli2301 [7.4K]

Answer:

The domain of the function should be:

'x greater than or equal to negative -5'.

Hence, option A is true.

Step-by-step explanation:

Given the expression

2\sqrt{x-5}

The domain of a function is the set of input or arguments for which the function is real and defined

We know that the value, inside the radicand, is the number found inside a radical symbol which must be greater than 0, otherwise, it would make the function undefined,

i.e.

x-5 ≥ 0

x ≥ 5

In other words, the domain of the function should be:

'x greater than or equal to negative -5'.

Therefore, the domain of the function:

x ≥ 5

\mathrm{Domain\:of\:}\:2\sqrt{x-5}\::\quad \begin{bmatrix}\mathrm{Solution:}\:&\:x\ge \:5\:\\ \:\mathrm{Interval\:Notation:}&\:[5,\:\infty \:)\end{bmatrix}

Hence, option A is true.

3 0
3 years ago
Read 2 more answers
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If i was asked to think of a number and multiply it by 2, I could write this algebraically as 2x.write the following agebraicall
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