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jeka94
4 years ago
10

Six students are working to simplify the expression shown.

Mathematics
1 answer:
dexar [7]4 years ago
4 0

Answer:

do you have an attachment? I need to see it.

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A box contains 5 purple marbles, 3 green marbles, and 2 orange marbles. Two consecutive draws are made from the box without plac
lana66690 [7]
There are 2 orange marbles, 3 green marbles, & 5 purple marbles

two consecutives draws <em>without</em> replacement

Orange first, green second

Orange/total = 2/10, or 1/5
green/total - 1 = 3/9, or 1/3
1/5(1/3) = 1/15
There is a 1/15 chance of <em>Orange first, green second</em>

Both marbles are purple
Purple/total = 5/10, or 1/2
Purple/total = 4/9, or <em>44% chance of both being purple</em>

first is purple, the next is anything but purple
purple/total = 1/2, or 50% chance
(everything - purple)/total = 5/10, or 50% chance
1/2(1/2) = 1/4, or 25% chance of <em>first purple, then anything but purple</em>


hope this helps
4 0
3 years ago
If (3, y) lies on the graph of y = -(2^x), then y =<br><br> 1/8<br> -6<br> -8
allochka39001 [22]
I think the answer is 1/8
6 0
3 years ago
At a farm the ratio to cows to horses is 7:4 if there were 35 cows
Leni [432]

If there were 35 cows and the ratio for cows to horses is 7:4, then there would be 20 horses because 35 divided by 5 is 7 and 20 divided by 5 is 4.

3 0
4 years ago
Kristian and Stephanie share money in the ratio 3 :2 Kristian receives $72 How much will Stephanie receive​
koban [17]

Answer:

48

Step-by-step explanation:

Kristian : Stephanie

3                 2

Kristian receives 72

72/3 = 24

Multiply each side by 24

Kristian : Stephanie

3*24                 2*24

72                        48

3 0
3 years ago
Which expression can be used to find the surface area of the following square pyramid
andreyandreev [35.5K]

Answer:

36+15+15+15+15

Step-by-step explanation:

For the surface area we need to add up all the areas in the pyramid:

  • area of the base
  • area of the triangle sides (there are 4 triangles)

Area of the base:

the base is a square, and the area of a square is given by:

a_{base}=l^2

where l is the length of the side: l=6, thus:

a_{base}=(6)^2\\a_{base}=36

Area of the triangles:

one triangle has the area given by the formula:

a_{triangle}=\frac{b*h}{2}

where b is the base of the triangle: b=6

and h is the height of the triangle: h=5, thus we have the following:

a_{triangle}=\frac{6*5}{2} \\\\a_{triangle}=\frac{30}{2} \\\\a_{triangle}=15

the expression that represents the surface area of the pyramid is:

a_{base}+area_{triangle}+area_{triangle}+area_{triangle}+area_{triangle}

substituting our values:

36+15+15+15+15

which is option B

7 0
4 years ago
Read 2 more answers
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