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AfilCa [17]
3 years ago
9

Heidi must correctly answer at least 80% of the questions on an exam to advance to the next

Mathematics
1 answer:
Oduvanchick [21]3 years ago
3 0
Given:
must correctly answer 80% of the questions
correctly answered questions = 26
incorrectly answered questions = 4
unanswered questions = 15

Total questions = 26 + 4 + 15 = 45

45 * 80% = 36 required correctly answered questions.

36 - 26 = 10

Out of 15 remaining questions, 10 questions must be correctly answered for Heidi to advance to the next level.
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Find the 28th term of the arithmetic sequence -1, -3, -5, …
Dovator [93]

Answer:

-55

Step-by-step explanation:

2nd term=> -1 + -2 × (2 - 1)

3rd term=> -1 + -2 × (3 - 1)

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28th term=> -1 + -2 × (28 - 1)

                => -1 - 54 = -55

4 0
3 years ago
Tom's toy box is shown below. The toy box is shaped like a rectangular prism. It has 5 wooden faces and is open on the top. What
mihalych1998 [28]

Answer:

1100 square inches

Step-by-step explanation:

The faces are all rectangles (area = length x width)

Area of bottom:  20 x 10 = 200

Area of front: 20 x 15 = 300

Area of back (same as front) = 300

Area of right side: 10 x 15 = 150

Area of left side (same as right side) = 150

Total of all the sides: 1100

8 0
2 years ago
Solve for x. angle a is 44, one side is 10
Talja [164]
Tan(35)=x/12
x=12*tan(35)=8.40
6 0
3 years ago
Classify the system of equations -1/2 x = -2 - y
allsm [11]
Putting both equations into standard form, we have the system
  x -2y = 4
  x -2y = -12

The lines these equations describe are parallel.

5 0
3 years ago
The number of fives is 3 more than six times the number of tens. Let t represent the number of tens. Write an expression for the
bixtya [17]

Answer:

The required expression is f = 3+6t

Step-by-step explanation:

Let t represent number of tens

Let f represent number of fives

So, the expression for number of fives can be formed by using:

The number of fives is 3 more than six times the number of tens.

f = 3+6t

So, the required expression is f = 3+6t

4 0
3 years ago
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