Please help me! im literally desperate! math is soooo hard! help me pls <3Pics down below!

Answers

Answer 1

Answer:

Answer:

its the multiplication property

Step-by-step explanation:

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Alberto feeds his fish the same amount of food each day. a 2 ounce jar of fish food flakes has enough food for alberto to feed his fish for 100 days. how many ounces of food will alberto need for 110 days? explain

Answers

if 2-ounce jar of fish food is enough for 100 days then for 110 days you can say:
2/100 = ?/110
so ? is your ounce of food:
2 * 110/100 =11/5 = 2.2 ounce :)))
i hope this is helpful
have a nice day

70% of teens have studied, of those that studied, 95% pass, thos that didnt study, 60% pass. Whats the probability for teens to pass that didnt study?

Answers

Answer:

Only 55% Of Teenagers Who Do Not Study For The Test Pass.

Step-by-step explanation:

its hard to explain but i think that the ones who passed payed attention in class and worked hard but never studied. so either way the percent would be low.

How many solutions does the equation have?4(2x + 3)= 2(3x-4)

A. one solution
B. Infinite solutions
C. no solution

Answers

$4(2x + 3)= 2(3x-4) \n \n 2(2x + 3) = 3x - 4 \ / \ divide\ each \ side \ by \ 2 \n \n 4x + 6 = 3x - 4 \ / \ expand \ equation \n \n 4x + 6 - 3x = -4 \ / \ subtract \ 3x \ from \ each \ side \n \n x + 6 = -4 \ / \ simplify \n \n x = -4 - 6 \ / \ subtract \ 6 \ from \ each \ side \n \n x = -10 \ / \ simplify \n \n Answer: \fbox {A) One solution / x = -10}$

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

Keep in mind the distributive property:
a(b + c) = ab + ac
a(b - c) = ab - ac

So, apply the distributive property to get:

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

Simplifying that more, we get:

8x + 12 = 6x - 8

Subtract 6x on both sides

8x + 12 - 6x = 6x - 8 - 6x
8x - 6x + 12 = -8
2x + 12 = -8

Subtract 12 on both sides

2x + 12 - 12 = -8 - 12
2x = -8 - 12
2x = -20

Divide by 2 on both sides

2x/2 = -20/2
x = -20/2
x = -10

There is only one solution, so your answer is A. one solution.

the table shows two options provided by high speed internet. option 1 have set up fee of $50 with $30 per month. option 2 have no set up fee and is $40 per month. in how many months will the total cost of both options be the same? what will that cost be? if you plan to cancel your internet service after 9 months, which is the cheaper option?

Answers

Let us take the case of first option first
Set up fee that need to paid = $50
Per month charge of using internet = $30
Now let us take the case of the second option
Set up fee that need to be paid = $0
Per month charge of using the internet = $40
Let us assume the number of months after which both options will be same = x
Then
50 + 30x = 40x
40x - 30x = 50
10x = 50
x = 50/10
= 5
So after 5 months both the options will be same
Now to find the cost after 5 months
we can take any option for calculating = 40x
= (40 * 5) dollars
= 200 dollars
So after 5 months that amount that need to be paid is $200 for any of the plans
In case of the first option,
Cost after 9 months = 50 + 30x
= 50 + (30 * 9)
= 50 + 270
= 320 dollars
After 9 months the cost using second option = 40x
= (40 * 9)
= 360 dollars
So after 9 months the first option will be cheaper.

4(x + 9) = x + 9 how does this work can you explain it to me

Answers

See the image below with steps

Show how you got your answer or explain it interest earned: $84

principal: $600

interest rate 7%

time:?

Answers

For simple interest, the amount of interest (I) is calculated from the principal (P), the annual rate (r) and the number of years (t) using the formula

... I = P·r·t

Fill in the given numbers, and solve for t.

... 84 = 600·0.07·t . . . of course, you know that 7% = 7/100 = 0.07

... 84 = 42t . . . . . . . . simplify

... 84/42 = t = 2 . . . . divide by the coefficient of t

The time period is 2 years.

Total = Principal × ( 1 + Rate ) ^ years

(Solved by taking logarithms)

Years = log (total / principal) / (log (1 + rate))

Years = log (684 / 600) / (log 1.07)

Years = log (1.14) / (log (1.07)

Years = 0.0569048513364726 / 0.0293837776852097