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Elan Coil [88]
3 years ago
12

A school dance committee is made up of 2 freshman, 4 sophomores, 2 juniors, and 2 seniors.

Mathematics
1 answer:
qaws [65]3 years ago
7 0

Answer:

4 and 6.

Step-by-step explanation:

There are 4 different grades represented, so for the first question, there are 4 ways that the students can sit if they must sit together by grade.

For the second question, there are 3 grades other than senior level, so it starts with 3 ways that the students can be seated. 3 ways x 2 students per way = 6 ways

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Do two angles that are 60 and 90 degrees make a supplementary angle. I think they don't but I'm not too sure
KATRIN_1 [288]
60+90=150 no it does not make a supplementary angle.
7 0
3 years ago
Given the equation of a line y = 5x -16, what is the slope of a line PERPENDICULAR to this line?​
Doss [256]

Answer:

-\frac{1}{5}

Step-by-step explanation:

Notice that the equation y = 5x - 16 is in slope-intercept form, or y = mx + b format. Whenever an equation is in slope-intercept form, the number in place of the m, or the coefficient of the x-term, represents the slope of that line. So, the slope of the given line is 5.

Slopes that are perpendicular to each other are opposite reciprocals. So, we need to find the opposite reciprocal of 5. To do that, write it as a fraction, making it \frac{5}{1}. Then, switch the sign and flip the numerator and denominator. This means that the opposite reciprocal of 5 is -\frac{1}{5}, so -\frac{1}{5} is the perpendicular slope.

3 0
3 years ago
What is 60% of 25<br> and what is 2.4 is 5% of what number
Katarina [22]

Answer:

60% of 25 = 15 and 2.52

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Please help me use the attachment to see the question
Zinaida [17]
(m^{2} -m+3)+(m-1)
= m^{2} -m+3+m-1 . . . . . . . . (opening the brackets)
= m^{2} -m+m+3-1 . . . . . . . . (collecting like terms)
= m^{2} +2





3 0
3 years ago
Find the fourth term of the sequence given by the rule tn=4(2)^n-1
Andre45 [30]
Answer: Choice A) 32

-----------------------------------------------
-----------------------------------------------

Plug n = 4 into the formula

tn = 4(2)^(n-1)
t4 = 4(2)^(4-1) ... every n is replaced with 4
t4 = 4(2)^3
t4 = 4(8)
t4 = 32
8 0
4 years ago
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