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3 years ago

3(x + 4) - x/2 when x = 2

Mathematics

2 answers:

Agata [3.3K]3 years ago

8 0

Answer:

Step-by-step explanation:

3(x+4) - x/2 when x = 2 is (6 + 12) - 2/2 = 18 - 2/2 = 18 - 1 = 17

QveST [7]3 years ago

5 0

Answer:

Step-by-step explanation:

Plug the 2 in where every "x" is. Then PEMDAS

3(2+4) - 2/2

3(6) - 2/2

18 - 2/2

18 - 1

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molly is 4 years younger than Heidi. In 3 years, Heidi will be twice as old as Molly. How old are they now

ASHA 777 [7]

Answer:

Molly would be 1 years old.

Step-by-step explanation:

"In three years..."

(m+3) will be Molly's age then.

(h+3) will be Heidi's age then.

(h+3) = 2(m+3) :: given.

Subsitute what we know about m, which is it equal h-4.

(h+3) = 2(m+3)

(h+3) = 2m + 6

substitute m=h-4

(h+3) = 2(h-4) +6

h +3 = 2(h -4) +6

h +3 = 2h -8 +6

h +3 = 2h -2

h = 2h -8 +3

-h = -5

h = 5

Heidi is 5 years old now.

m = h-4

m = 5-4

m = 1

Molly is 1 years old now.

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2 years ago

an artist transferred a rectangular design 13 cm long and 6 cm wide to a similar canvas 260cm long and 120 cm wide. what is the

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The scale factor is 20

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3 years ago

The total cost of attending an AHS football game can be presented by the equation C= 5t, where C is the total cost and t is the

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Seven tickets, you only need to take away the "C" and substitute for $35.00 and solve for "t"

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4 years ago

Find the value of x in the triangle shown below.

SVETLANKA909090 [29]

Answer:

Step-by-step explanation:

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3 years ago

Six customers enter a three-floor restaurant. Each customer decides on which floor to have dinner. Assume that the decisions of

Firdavs [7]

<h2>Answer:</h2>

The probability that exactly one customer dines on the first floor is:

0.26337

<h2>Step-by-step explanation:</h2>

We need to use the binomial theorem to find the probability.

The probability of k success in n experiments is given by:

$P(X=k)=n_C_k\cdot p^k\cdot (1-p)^{n-k}$

where p is the probability of success.

Here p=1/3

( It represents the probability of choosing first floor)

k=1 ( since only one customer has to chose first floor)

n=6 since there are a total of 6 customers.

This means that:

$P(X=1)=6_C_1\times (\dfrac{1}{3})^1\times (1-\dfrac{1}{3})^{6-1}\\\\\\P(X=1)=6\times (\dfrac{1}{3})\times (\dfrac{2}{3})^5\\\\\\P(X=1)=0.26337$

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3 years ago