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lesya [120]
3 years ago
6

Suppose there are 20 questions on a multiple choice test.if 25% of the answers are choice b how many of the answers are not choi

ce b
Mathematics
1 answer:
zvonat [6]3 years ago
6 0

Answer:

are not choice b 75%

75/100 *20 = 1500/100=15

Step-by-step explanation:

You might be interested in
8 cubed in standard form and exponential form
masya89 [10]

Answer:

  • so 8 cubed (8 × 8 × 8) in standard form is:  512
  • so 8 cubed (8 × 8 × 8) in exponential form is: 8³

Step-by-step explanation:

As we know that

The cube of any given number is that number times itself.

For example, 8 cubed, denoted by 8³ is equal to 8 × 8 × 8.

An exponent basically indicates the number of times we must multiply the base number. For example, to compute 8³, we multiply 3 three times (8×8×8).

  • so 8 cubed (8 × 8 × 8) in standard form is:  512
  • so 8 cubed (8 × 8 × 8) in exponential form is: 8³

8 0
3 years ago
Identify the restrictions on the variable <br><br><br><br><br><br><br><br>​
34kurt

Answer:

x ≠ -4

Step-by-step explanation:

Division by zero is not defined, so x cannot = -4.

8 0
2 years ago
Write a situation for the following inequality: x&gt;25
Marina CMI [18]
X represents the number of books you have. If you say to a friend "I have more than 25 books" then you can write "x > 25" which says "x is greater than 25"

Something like x = 50 will make x > 25 since 50 is larger than 25. In contrast, a value like x = 20 is going to make x > 25 false because 20 > 25 is false (20 is smaller than 25, not larger)
8 0
3 years ago
How do you graph this inequality on a number line? <br><img src="https://tex.z-dn.net/?f=r%20%5Cleqslant%20%20-%209" id="TexForm
Black_prince [1.1K]

Answer in the attachment.

5 0
3 years ago
Does the table show a direct proportional relationship? If so, what is the constant of proportionality?
lesantik [10]

Answer:

C. Yes, 3.5.

Step-by-step explanation:

If there is a relationship of direct proportionality for every ordered pair of the table, then the constant of proportionality must the same for every ordered pair. The constant of proportionality (k) is described by the following expression:

k = \frac{y}{x} (1)

Where:

x - Input.

y - Output.

If we know that (x_{1}, y_{1}) = (13, 45.5), (x_{2}, y_{2}) = (14, 49) and (x_{3}, y_{3}) = (15, 52.5), then the constants of proportionalities of each ordered pair are, respectively:

k_{1} = \frac{y_{1}}{x_{1}}

k_{1} = \frac{45.5}{13}

k_{1} = \frac{7}{2}

k_{2} = \frac{y_2}{x_2}

k_{2} = \frac{49}{14}

k_{2} = \frac{7}{2}

k_{3} = \frac{y_{3}}{x_{3}}

k_{3} = \frac{52.5}{15}

k_{3} = \frac{7}{2}

Since k_{1} = k_{2} = k_{3}, the constant of proportionality is 3.5.

8 0
3 years ago
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