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2 years ago

The cost of 6 sandwiches and 4 drinks is $53. The cost of 4 sandwiches and 6 drinks is $47.

Mathematics

2 answers:

podryga [215]2 years ago

5 0

D each sandwich coast $6.50

Whitepunk [10]2 years ago

4 0

Answer:

look at the photo..........

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Cos w, if tan w=-10/9 and sin w> 0

Veseljchak [2.6K]

Answer:

tan(x)=512 can be thought of as the ratio of opposite to adjacent sides in a triangle with sides 5,12 and 13 (where 13 is derived

Step-by-step explanation:

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2 years ago

8x+11=14-1x how does it work

Alenkinab [10]

Answer:

x = 1/3

Step-by-step explanation:

Step 1: Write equation

8x + 11 = 14 - 1x

Step 2: Solve for x

Simplify: 8x + 11 = 14 - x
Add x to both sides: 9x + 11 = 14
Subtract 11 on both sides: 9x = 3
Divide both sides by 9: x = 3/9
Simplify: x = 1/3

Step 3: Check

Plug in x to verify it's a solution.

8(1/3) + 11 = 14 - 1(1/3)

8/3 + 11 = 14 - 1/3

41/3 = 41/3

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2 years ago

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The ratio between the number of red and green marbles in a box is 3:7. How many marbles are in the box if there are 20 fewer red

natita [175]

There are 50 marbles

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2 years ago

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PLEWhat is the simplified form of V45? A. v5 B. 9.5 C. 3V5 D. 573

marysya [2.9K]

It’s D I did the work

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3 years ago

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The random variable x is the number of occurrences of an event over an interval of ten minutes. It can be assumed that the proba

zlopas [31]

Answer:

The probability that there are 8 occurrences in ten minutes is

option B. 0 .0771

Step-by-step explanation:

Given:

Random Variable = x

Mean number of occurrences in ten minutes is 5.3.

The probability of an occurrence is the same in any two time periods of an equal length

To Find:

The probability that there are 8 occurrences in ten minutes = ?

Solution:

Let X be the number of occurrences of the event X

$X \sim {Pois} (\lambda)$

$\lambda = E(X) = 5.3$

Possion of distribution is given by ,

$P(X=x) = \frac{e^{- \lambda} \lambda^{x}}{x!}$

Substituting the values,

$P(X=8) = \frac{e^{- 5.3} 5.3^{8}}{8!}$

$P(X=8) = \frac{(0.004994) ( 622596.904)}{40320}$

$P(X=8) = \frac{(3109.24894)}{40320}$

P(X=8) = 0.0771

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3 years ago