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nekit [7.7K]
3 years ago
10

There are

Mathematics
1 answer:
ehidna [41]3 years ago
4 0
Yesterday, 1/4 of 80 =20 gave their speeches, so there are 80-20=60 students left.
Today, 2/5 of 60=24 students gave their speeches, so there are 60-24=36 students who still haven't give their speeches
another way to think of it is 80*(1- 1/4)*(1- 2/5)=80*(3/4)*(3/5)=36
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HELPPP
Juli2301 [7.4K]

Answer:

slope (m) = -\frac{3}{2}

Step-by-step explanation:

We can find the slope (m) by using coordinate pairs of any 2 points located along the slope of the line that we have on the graph.

This, let's use the coordinate pairs at:

x = -4, y = 2 (-4, 2) => (x2, y2)

x = 0, y = -4 (0, -4) => (x1, y1)

slope (m) = \frac{y2 - y1}{x2 - x1}

slope (m) = \frac{2 -(-4)}{-4 - 0}

slope (m) = \frac{2 + 4}{-4 - 0}

slope (m) = \frac{6}{-4}

slope (m) = \frac{3}{-2}

slope (m) = -\frac{3}{2}

4 0
3 years ago
What is the value of X?
d1i1m1o1n [39]

Answer:

x=10

Step-by-step explanation:

We can use the angle bisector theorem to solve this problem

8             12

-------- = ---------

x+4         2x+1

Using cross products

8(2x+1) = 12(x+4)

Distribute

16x+8 = 12x+48

Subtract 12x from each side

16x -12x +8 = 12x-12x +48

4x +8 = 48

Subtract 8 from each side

4x+8-8 = 48-8

4x = 40

4x/4 = 40/4

x=10

3 0
3 years ago
Blank percent of 50 shirts
Dmitrij [34]
The answer is 10 because 5 10 15 20 25 30 35 40 45 50
8 0
3 years ago
Please i suck at math lol 2.0
Salsk061 [2.6K]

Answer:

i- ;-;

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Really need help with this question ASAP!!!
Leya [2.2K]
H=-5(t^2 - 16t)

H=-5(t^2 - 16t +64)+320

H=-5(t-8)^2 +320

Vertex is at (8, 320)

The max height is 320 m.
4 0
3 years ago
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