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MrRissso [65]
3 years ago
12

Donald took a math test and got 15 answers correct and 5 incorrect how many questions were on the test

Mathematics
2 answers:
Pepsi [2]3 years ago
8 0
There should be 20 questions that was on the test.
jekas [21]3 years ago
5 0
20 questions

Is this some type of trick question I'm missing out on? 
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3 years ago
How many even 2-digit positive integers can be written using the numbers 2, 4, 5, and 8?
BartSMP [9]

Answer:

12

Step-by-step explanation:

To have an even integer the number's endian has to be an even number. Consider the 2-digit positive number like _ _ and place the number of possible options out of four total options in each blank space. We have 3 even options, so we can fill the endian blank like this _ <u>3</u>

Since the first digit can be any number, therefor, we have 4 options for the first blank space <u>4</u> <u>3</u>. Just multiply the two numbers and you have the answer.

22, 24, 28, 42, 44, 48, 52, 54, 58, 82, 84, 88

7 0
3 years ago
Solve for y: 2y + 3 =11<br><br>Solve for x:<br>2/3x = 18​
laiz [17]

Answer: y=4 x=27

Step-by-step explanation: 2y+3=11

-3 -3

2y=8

/2 /2

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(3) (3)

2x=54

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5 0
3 years ago
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What is the value of the this expression when a=5 and k=-2
Marizza181 [45]

Answer:

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7 0
3 years ago
Write an equation in point slope form for a line that includes the origin and (9,-3)
aivan3 [116]
So we are given two points that the line crosses, the origin and (9, -3), we can calculate the slope m of the line with these data, dividing the y segment by the x segment:
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m = -1/3
then we can use the point slope line equation to find the line equation, lets use the point origin (0,0) to do so:
y - y1 = m(x - x1), where x1, y1 are the coordinates of a point that the line crosses:
y - 0 = (-1/3)(x - 0)
y = <span>(-1/3)x
so this is the equation of the line, slope  -1/3 and y intercept 0</span>
3 0
3 years ago
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