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Yanka [14]
3 years ago
14

Help me with this probability question for (7th grade math)​

Mathematics
2 answers:
Agata [3.3K]3 years ago
6 0

Answer:

15 times

Step-by-step explanation:

Probability is calculated as

probability = \frac{favourableoutcomes}{count}

Here a favourable outcome is an even number : 2, 4, 6 and the count is 6

P(even number) = \frac{3}{6} = \frac{1}{2}

expected even number = \frac{1}{2} × 30 = 15 times

ElenaW [278]3 years ago
4 0

There is a 3/6 possibility for an even number to get chosen.

Might be wrong

bye

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svet-max [94.6K]

Answer:

X12/45 =32

Step-by-step explanation:

6 0
2 years ago
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X + 2 – z; use x = 6, and z = 2​
grin007 [14]

Answer:

6

Step-by-step explanation:

  • x + 2 - z
  • If x = 6 and z = 2 then : 6 + 2 -2
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4 0
3 years ago
Find the domain and range of the exponential function h(x) = –343x.
Amanda [17]

The function is supposed to be;

h(x) = -343^(x)

Answer:

The domain will be a set of real numbers while the range will be y ≤ 0 and on the interval (-∞, 1)

As x is increasing, h is decreasing and as x is decreasing, h is increasing

Step-by-step explanation:

We are given the function as;

h(x) = -343^(x)

The formula is;

y = a^(x) since it's symmetrical to the x-axis

However in this case;

y = -a^(x)

Now, the domain is y and the range is a set of values of x.

I've attached a graph of this function drawn on desmos.

From the graph we can see that The domain will be a set of real numbers while the range will be on the interval (-∞, 1)

For a value of x = 0,we have;

h(0) = -343^(0)

h(0) = -343

When we increase the value of x to 3,we have;

h(3) = -343^(3)

h(3) = -40353607

When we decrease the value of x to -3, we have;

h(-3) = -343^(-3)

h(-3) = 0.00000002478

Thus, we can conclude that;

As x is increasing, h is decreasing and as x is decreasing, h is increasing

4 0
2 years ago
If you place a 10-foot ladder against the top of a 6-foot building, how many feet will the bottom of the ladder be from the bott
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Answer: 8 feet

Step-by-step explanation:

Draw a right triangle and label the sides using the given information. (Drawing below) Use pythagorean theorem to find the missing length:

a^2 + b^2 = c^2

(building)^2 + (missing piece)^2 = (ladder)^2

6^2 + x^2 = 10^2

36 + x^2 = 100. subtract 36

x^2 = 64. square root of both sides

x = 8

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2 years ago
jack wants to buy a pair of trousers for $60 when he went to the store he found that the price was marked down by 20% how much d
Leno4ka [110]

they would cost 48 dollars


8 0
2 years ago
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