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2 years ago

This is super confusing plz help???

Mathematics

2 answers:

balu736 [363]2 years ago

8 0

None is left she gave it all away

netineya [11]2 years ago

4 0

Answer:

None. She gave half to one person then the other half to another person.

Step-by-step explanation:

Hope this is correct, if not feel free to let me know. I'm sorry in advance if this is wrong.

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What mixed number represents thirty-eighths?

Anvisha [2.4K]

Answer:

............... 3 6/8

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3 years ago

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Question 1: A ratio of 28 to 12 can be expressed in simplest form as:

vichka [17]

It’s 7:3
Explanation
It’s 7:3 because 28 divided by 4 is 7 and 12 divided by 4 is 3

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3 years ago

Solve the equation log4(x + 20) = 3

salantis [7]

Answer:

Step-by-step explanation:

I don not understand what is for 4 here. So there are 2 cases:

Case 1: If you mean: log[4(x+20)]= 3

We know 3 = log(10^3)= log(1000)

So we have log[4(x+20)]= log(1000)

so 4(x+20)= 1000

and x+20 = 1000/4

x+20 = 250 and finally x= 250-20, x=230

The solution is 230.

Case 2; If you mean that 4 is the base of logarithm.

$log_{4}(x+20)= 3$

and we know that $3=log_{4}(3^{4} )= log_{4}(81)$

So we have $log_{4}(x+20)= log_{4}(81)$

and x+20 = 81

or x= 81-20

x=61

The answer is 61.

Hope that useful for you, both cases.

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3 years ago

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A political poll estimates that 48% of Democrat voters will vote for Elizabeth Warren in the presidential primaries. They provid

Firlakuza [10]

Answer:

Step-by-step explanation:

The confidence level tells us how sure we can be. It is expressed as a percentage and represents how often the true percentage of the population who would pick an answer lies within the confidence interval. The 95% confidence level means you can be 95% certain.

b) The confidence interval is needed to estimate the percentage of democrats voters that will vote for Elizabeth Warren in the presidential primaries. 48% tells us the percentage of democrats voters that will vote for Elizabeth Warren in the presidential primaries of a given sample not for the all voters.

c) We are 95% confident that between 45% and 51% of all voters support women.

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3 years ago

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13.) Springfield Elementary is putting on a school play

Oduvanchick [21]

45 adult tickets and 80 children tickets were sold

Solution:

Let "a" be the number of adult tickets sold

Let "c" be the number of children tickets sold

Cost of 1 adult ticket = $ 6

Cost of 1 children ticket = $ 3.50

They sold a total of 125 tickets

Therefore,

a + c = 125

c = 125 - a --------- eqn 1

They made a total of $550. Therefore, frame a equation as:

number of adult tickets sold x Cost of 1 adult ticket + number of children tickets sold x Cost of 1 children ticket = 550

$a \times 6 + c \times 3.50 = 550\\$

6a + 3.50c = 550 ----------- eqn 2

Let us solve eqn 1 and eqn 2

Substitute eqn 1 in eqn 2

6a + 3.50(125 - a) = 550

6a + 437.5 - 3.50a = 550

2.5a = 112.5

Substitute a = 45 in eqn 1

c = 125 - 45

Thus 45 adult tickets and 80 children tickets were sold

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3 years ago