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IceJOKER [234]
3 years ago
11

1? + 2? + 3? = 51. 2? - 1? = 4. List 1?, 2?, 3? in the format of 1?,2?,3? without spaces. (Find 1?,2?,3? in integer form)

Mathematics
1 answer:
Molodets [167]3 years ago
4 0

Answer:


Step-by-step explanation:

To calculate combinations, we will use the formula nCr = n! / r! * (n - r)!, where n represents the number of items, and r represents the number of items being chosen at a time. To find the probability of an event, you may have to find the combinations.

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3 X 5 power or 2
Ainat [17]
225 3x5 is 15 and to the power of 2 is 15x15 so multiply and you get 225 hope it helps
5 0
3 years ago
Studies show that a typical giant hummingbird can flap its wings once in 0.08 of a second.
Licemer1 [7]

Answer:

a. 90

b. 360

Step-by-step explanation:

The time taken by humming bird to flap its wings= 0.08 sec

by flying 7.2 seconds a typical giant hummingbird flap its wings \frac{7.2}{0.08} times

= 90 times

Since, A ruby-throated hummingbird can flap its wings 4 times faster than a giant hummingbird, it will flap its wings in every 0.02 sec

so in 7.2 seconds it will flap \frac{7.2}{0.02} times = 360 times

4 0
3 years ago
Graph the equation 8x-4y=56 then, trace the graph to find the missing value in the coordinate pairs below
Marysya12 [62]
Just look at it this way do 8(1) instead of x and graph that on the x axis
then do 4(1)instead of y and graph on the y axis then figure out which numbers you need to keep inputting until you reach 56 on the graph.
5 0
3 years ago
Read 2 more answers
Robin can clean 72 rooms in 6 days how many can he clean in 9 days
Monica [59]
Let's put it this way. 
It's a ratio of 6:72 and we need to change it in a way to find number of rooms cleaned in 9 days.

Divide 6 & 72 both by 2
Ratio is now 3:36

Multiply 3 & 36 both by 3
Ratio is now 9:108

The number of rooms in which Robin can clean in 9 days is 108 rooms. 
3 0
3 years ago
Read 2 more answers
Which describes the cross section of the square prism that passes through the vertices A, B, C, and D shown
sasho [114]

Answer:

first of all,

Step-by-step explanation:

In triangle ABC one side equal  and two sides equal  

Step-by-step explanation:

We are given a prism whose base is square with sides 8 in and height 12 in.

If we take cross section through vertices A, B and C

We will get a cross section as triangle.

In triangle ABC, sides are AB, BC and AC

AB is diagonal of top square whose side 8 in.

AC is face diagonal of front face.

BC is face diagonal of right face.

AC=BC≠AB

Hence, In triangle ABC one side equal  and two side equal  

Hope this helps!!

5 0
3 years ago
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