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Novosadov [1.4K]
3 years ago
7

A bag contains 8 red marbles, 3 blue marbles and 5 green marbles. If three marbles

Mathematics
1 answer:
dangina [55]3 years ago
8 0

Answer:

4/9

Step-by-step explanation:

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If x varies directly with y and x = 6 when y = 15, find x when y= 20.
Kaylis [27]

Answer:

8

Step-by-step explanation:

Varies directly think y=kx

Varies indirectly think y=k/x

We have first option so y=kx

x=6 and y=15 means we have 15=k(6)

So k=15/6 or reducing gives=5/2

So we just found our constant of proportionality, this number never changes.  It stays the same no matter what x or y they give you...

So the equation is y=5/2 *x

Now what is x if y=20

Plug in 20=5/2 *x

So x=20*2/5=40/5=8

6 0
3 years ago
11) A 'good' children's book is supposed to have pictures and text in the ratio 17:8. In a book I have just looked at,
Andre45 [30]

Answer:  128 pages are text

Step-by-step explanation:

7 0
4 years ago
Find the slope of the line on the graph. Write yoyur answer as a frction or a whole number, not a mixed number or decimal.
BigorU [14]
Okay, so I'm almost positive the slope is m=1/1. I know this because the line rises one and runs one. 
7 0
3 years ago
Read 2 more answers
Solve.
horrorfan [7]
.hello : 
<span>2d−e=7....(1)
d+e=5.....(2)
(1)+(2) : 3d=12
d=4
subsct in (2) : 
4+e=5
e=1
conclusion : 
</span><span>The solution is (4, 1).</span><span>

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4 0
3 years ago
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An architect is sketching a doorway the top of which is part of a circle of radius 50 in the center angle is 100 how many inches
nikitadnepr [17]

Answer:

The arc length is 87.5 inches.

Step-by-step explanation:

Given that,

Arc length = S = ?

Angle = theta = 100°  

Radius = r = 50 inches

The relation between the arc length (S), angle (theta) and radius (r) is calculated using S = r* \theta

However, the angle should be in radian.

To convert degrees into radian, we use: Degree * \frac{\pi}{180}

=> 100 * \frac{\pi}{180}

=> 1.75 radian

By putting values in the above relation, we get

S = 1.75*50

S = 87.5  inches

Therefore, the arc length is 87.5 inches.

4 0
4 years ago
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