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tatuchka [14]
3 years ago
11

There are 63 marbles in a leather bag. Some of the marbles are blue, some are green, some are clear, some are gold, and some are

red. Based on experimental probability, there is a 1 in 7 chance of pulling out a blue marble. About how many blue marbles might be in the entire bag?
Group of answer choices

7 blue marbles

13 blue marbles

9 blue marbles

6 blue marbles
Mathematics
1 answer:
sveticcg [70]3 years ago
4 0

Answer:9

Step-by-step explanation:1/7 of 63 =9

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Y-3x=-2<br> 3x=y+6<br> Solve system..
LenKa [72]

Answer:

This equation system has no answer

Step-by-step explanation:

y - 3x =  - 2..................(1) \\ 3x -y = 2.....................(2) \\ 3x = y + 6.....................(3) \\ 3x - y = 6.....................(4) \\ (4) - (2) \\ 0 = 4

3 0
3 years ago
Solve each equation. Be sure to check your solution.<br> 0.3a = 51
Aleksandr-060686 [28]

Answer:

a = 170

Step-by-step explanation:

0.3a = 51

a = 51 : 0.3

a = 51 : 3/10

a = 51 x 10/3

a = 510/3

a = 170

0.3x170 =

= 3/10x170

= 510/10

= 51

6 0
3 years ago
Read 2 more answers
Which equation represents the line that passes through the point (4, -5) and is perpendicular to the line x + 2y = 5?
Lerok [7]

Answer:

y = 2x - 13

Step-by-step explanation:

Equation of a line is y = mx + c, m is the gradient and c is the intercept

The line passes through points 4 and -5, x is 4 and y is -5

-5 = 4m + c

When two lines are perpendicular, the products of their gradients are equal to -1, m1 * m2 = -1

x + 2y = 5

2y = -x + 5

y = (-1/2 * x) + 5

therefore m = -1/2

m1 * m2 = -1

m * -1/2 = -1

-m = -2 , therefore m = 2

-5 = 4 * 2 + c

c = -5 - 8, which is -13

Therefore the equation for the line is

y = 2x - 13

7 0
3 years ago
Determine which function has the greatest rate of change as x approaches infinity.
Mekhanik [1.2K]

Answer: h(x) = 3*x^2 - 7*x + 8

Step-by-step explanation:

The rate of change of a function is equal to the derivate:

remember that a derivate of the form:

k(x) = a*x^n is k'(x) = n*a*x^(n-1)

Then we have:

f(x) = 2*x - 10

f'(x) = 1*2* = 2

g(x) = 16*x - 4

g'(x) = 1*16 = 16

h(x) = 3*x^2 - 7*x + 8

h'(x) = 2*3*x - 1*7 = 6*x - 7

So the only that increases as x increases is h(x), this means that the greates rate of change as x approaches inffinity is the rate of change of h(x)

3 0
3 years ago
A politician has $4,200 to buy TV advertisements. If each advertisement costs $700, how many advertisements can the politician b
Ostrovityanka [42]

they can buy 6 tv advertisements.

6 0
3 years ago
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