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laiz [17]
3 years ago
6

A university lecture hall has 100 seats. During class, 30% of the seats are empty. How many students are attending class?

Mathematics
2 answers:
Alika [10]3 years ago
7 0

Answer:

70 students

Step-by-step explanation:

100=100% so -30 to get 70 students

Shtirlitz [24]3 years ago
3 0

Answer:

70 students are attending class

Step-by-step explanation:

100% - 30% = 70%

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A 4-pint carton of pineapple juice costs $8.08. What is the price per quart?<br><br> $
Elena L [17]

Answer:

2.02

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6 0
3 years ago
What is the equation of the line that goes through (-5,0) and (-4,4)
Tasya [4]

Answer:

y=4x+20

Step-by-step explanation:

To write an equation, use the slope-intercept equation:

y=mx+b

M is the slope and b is the y-intercept.

First, find the slope by using the slope formula for when you have two points:

\frac{y(2)-y(1)}{x(2)-x(1)}=\frac{rise}{run}

Rise over run is the change in the y-axis over the change in the x-axis. Substitute values:

(-5,0)(-4,4)\\(-5(x1),0(y1))\\(-4(x2),4(y2))\\\\\frac{4-0}{-4-(-5)}

Simplify parentheses (two negatives make a positive) and simplify:

\frac{4-0}{-4+5}\\\\\frac{4}{1}=4

The slope, m, is 4. Insert this information into the equation:

y=4x+b

Now, take one of the points and insert into the slope-intercept formula:

(-5,0)\\(-5(x),0(y))\\\\0=4(-5)+b

Solve for b, the y-intercept. Simplify multiplication:

0=-20+b

Add 20 to both sides and simplify:

0+20=-20+20+b\\20=b\\b=20

The y-intercept, b, is 20. Insert this value into the equation:

y=4x+20

Done.

7 0
3 years ago
BRAINLIEST!
alisha [4.7K]
Assume that 7 is a. We already know that c = 25. The equation is c^2 - a^2 = b^2.
25^2= 625 7^2= 49 625-49= 576
Square root of 576 = 24

The length of thee other leg is 24.

6 0
3 years ago
DON'T GIVE ME LINK AS ANSWER PLEASE!!
iris [78.8K]

Answer: a. The median is 5, the interquartile range is 10.

8 0
3 years ago
18
nydimaria [60]
I don’t know the answer
5 0
3 years ago
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