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ira [324]
3 years ago
11

3 - 6x + 2 + 1 = 4 - 5x + 2 - x How many solutions does this equation have

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
8 0

Answer:

4

Step-by-step explanation:

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A bag has 4 yellow, 6 red, 2 green, and 8 purple marbles . What is the probability of picking a purple marble, replacing it, and
Ostrovityanka [42]
7/19 is the answer because your replacing the purple marble and it became 7 all u do is add them
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3 years ago
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Plz answer the rest..... will mark as brainlist​
dedylja [7]

Answer:

I answered it using pictures because I dont know how else to put the answers down.

5 0
3 years ago
XYZ is an isosceles triangle inscribed I a circle, center O. XY=XZ= 20 and YZ=18. Calculate to 3.s.f.
Vlad1618 [11]

Answer: 17.9

Step-by-step explanation:

Using Heron's formula:

Area of a triangle is given by:

√s(s-a)(s-b)(s-c)

Where a, b and c ara sides of the triangle and

S = (a+b+c) / 2

In the question above sides are :

XY=XZ= 20 and YZ=18

S = (20 + 20 + 18) / 2 = 58/2 = 29

Area = √29(29-20)(29-20)(29-18)

Area = √29(9)(9)(11)

Area = √25839

Area = 160.74513

Altitude = height(h)

Area = 0.5 × base × height

Base = yz = 18

160.74513 = 0.5 × 18 × h

160.74513 = 9 × h

h = 160.74513 / 9

h = 17.9 (3 s.f)

5 0
3 years ago
Solve for x. 2/5≤x−4
lilavasa [31]

Answer:

4.4 ≤ x

Step-by-step explanation:

2/5 ≤ x  -4

solve using inverse operations:

2/5 ≤ x - 4

0.4 ≤ x - 4

+4        +4

4.4 ≤ x

4 0
3 years ago
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In how many different ways can a committee of 4 students be chosen from 6 students
AnnyKZ [126]
If order mattered, then there would be 6*5*4*3 = 30*12 = 360 different ways to form the committee. However, no single member outranks the other. Each member has equal ranking. So order does not matter. 

Since order does not matter, we must consider all of the ways to arrange a single group of 4 people. That is 4! = 4*3*2*1 = 24 ways. We overcount by a factor of 24 when order doesn't matter which is why we divide the previous result (360) by 24 to get 360/24 = 15

Answer: 15

Note: you can use the combination formula n C r = (n!)/(r!*(n-r)!) with n = 6 and r = 4 to get the same answer
3 0
3 years ago
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