3 years ago

Plz do both plz plz plz

Mathematics

1 answer:

shtirl [24]3 years ago

4 0

The first one is A and the second is either B or D I can’t decide

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what is the answer for 1/3x+y=4 and if you use big ideas math program and you got the right answer lemme know

erica [24]

Answer:

x=-3y+12

Step-by-step explanation:

Yes.

8 0

3 years ago

Lorna has 60$ and her sister has 120$ Lorna saves 7$ Per week and solution represent the number of weeks w it will take for girl

Dominik [7]

Let x be the amount of weeks.

60 + 7x = 120
60 - 60 + 7x = 120 - 60
7/7x = 60/7
x = 8.571428571

8 0

3 years ago

The college student senate is sponsoring a spring break Caribbean cruise raffle, with proceeds going to the local homeless shelt

drek231 [11]

Answer:

The mathematical expectation of a student who purchases 10 tickets is -$39.65.

Step-by-step explanation:

A student that purchases 10 tickets out of 2900 has a probability of winning the cruise that can be calculated as:

$p=10/2900\approx0.00345$

Each ticket cost $5, so he has spent $50 for the 10 tickets.

Then, the expected value of this operation is equal to the expected value of the earnings (probability of winning the prize multiplied by the value of the prize), minus the costs:

$E(X)=p\cdot R-C\\\\E(X)=0.00345\cdot3000-50=10.35-50=-39.65$

The mathematical expectation of a student who purchases 10 tickets is -$39.65.

8 0

3 years ago

18. The sum of 10 times a number and fifteen is added to eleven times the same number.

sergij07 [2.7K]

Answer:

Sum of 10 times a number and fifteen is added to eleven times the same number is therefore: 10x + 15 + 11x = 21x + 15

Step-by-step explanation:

4 0

3 years ago

Marcus is making homemade barbecue sauce.The recipe caps for 3 cups of ketchup for every 1/2 cup of mustard

SSSSS [86.1K]

Answer:

3 divided by 1/2

Step-by-step explanation:

turn 3 into 3/1 then flip 1/2 into 2/1 and multiply which is <u><em>6</em></u>

Kcf

Keep

Change

Flip

3 0

3 years ago

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