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iogann1982 [59]
3 years ago
15

A jar contains black and white marbles in the ratio 2:5. If the jar contains total of 35 marbles, how many of the marbles are bl

ack?
Mathematics
1 answer:
Svet_ta [14]3 years ago
8 0

Answer:

10 black marbles

Step-by-step explanation:

Let black marbles be=2x

Then white marbles=5x

Total marbles=7x which in turn is equal to 35. Hence x=5

Black marbles=2*5=10

H2H

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Solve 6 < x + 5 < 11 ​
Vanyuwa [196]

Answer:

I think it should be 1  < x ≤ 6

Step-by-step explanation:

7 0
3 years ago
HELP ASAP PLEASE!!
Mama L [17]

Answer:

Step-by-step explanation:

According to the table, function g(x) reaches the max height of 33, approx.

The equation of motion is f(x) = -16x^2 + 42x + 12.  We need to determine the maximum of this function.  To do this, find the x-coordinate of the vertex, which is x = -b/(2a), or x = -42/(2*-16), or 1.31 sec.

Evaluating f(x) = -16x^2 + 42x + 12 at x = 1.31 sec, we get f(1.31) = 39.6.

So it appears that f(x) has a higher max than does g(x); the difference is approx. 39.6 - 33, or 6.6

6 0
3 years ago
I need help please with step by step it would help me a lot
pav-90 [236]

Answer:

Domain: (-infinity, +infinity) since you can pick any x values.

Range: [0, +infinity) since it does not go below the x axis.

Step-by-step explanation:

The graph is a parabola given by y=x^2

lets pick a few x values:

x = 1 gives us y = 1^2, which = 1

x = -1 gives us y = (-1)^2, which = 1

The parabola's domain is any x value as it extends to infinity.

For its range, you can see that it does not go below the x axis at x = 0. Therefore, the range of the parabola is from [0, infinity]

4 0
3 years ago
1. The figure shows a graph of the function of f(x) in the xy-coordinate plane, with the vertex at (1,9) and the zeros
never [62]

Answer:

f{0) is greater than g(0) and f(2) is greater than g(2).

Step-by-step explanation:

f{0) is greater than g(0) = f(0)=8  and g(0)=2

f(2) is greater than g(2) = f(2)=8 and g(2)= -4

3 0
3 years ago
Identify the slope and the y intercept please
anyanavicka [17]

Answer:

m= 2 / 3  b= -2

Step-by-step explanation:

you have to look at the graph to find the y-intercept

then do this to find the slope

m =  

y2 - y1

x2 - x1

you plug in all the numbers to get

m=

<u>0+4</u>

3+3

(it would be 3 minus, negative 3 which looks like: 3- - 3 becomes 3+3)

m=

<u>4</u>

6

and simplified that would be

m= 2/3

6 0
3 years ago
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