Ted needs an average of at least 70 on his three history test he has scored already 85 and 60 on two test what is the minimum grade ted need on his third test?
Answers
needs at least average of 70
at least is represented as greater than or equal to or the sign (>)
70>(total)/(number oftests)
since we have 3 tests, we have to have 3 scores so
70>(x+y+z)/3
he scored 85 and 60
70>(x+85+60)/3 (doesn't matter which to subsitute)
70>(x+145)/3
multiply obht sides by 3
210>x+145
subtract 145 from both sides
65>x
he needs to get at leas 65 on his third test
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Answers
for four bags of popcorn and two drinks.
Write a system of equations that can be used to find the price of one bag of popcorn and the price
of one drink.
Using these equations, determine and state the price of a bag of popcorn and the price of a drink,
to the nearest cent.
Answers
popcorn = x and
drinks = y
Jacob: 2x + 3y = 18.25
Zachary: 4x + 2y = 27.50
ok now you have to use these 2 equations to get the answer
4x + 2y = 27.50 ---> 2y = 27.50 - 4x ---> y = 13.75 - 2x
2x + 3y = 18.25
2x + 3(13.75-2x) = 18.25
2x + 41.25 - 6x = 18.25
-4x + 41.25 = 18.25
-4x = -23
x = 5.75 One bag of popcorn is $5.75
4x + 2y = 27.50
4(5.75) + 2y = 27.50
23 + 2y = 27.50
2y = 4.50
y = 2.25 One drink is $2.25
Answer:
Popcorn costs: $5.75, and drink costs: $2.25.
Step-by-step explanation:
Answers
depreciation rate: 18%
Value of the car : 20,000
Age of the car : 4 years.
The depreciation is based on the current value of the car. Therefore, the amount of depreciation varies.
yr Beginning Value Dep. Rate Depreciation Ending Value
1 20,000.00 18% 3,600.00 16,400.00
2 16,400.00 18% 2,952.00 13,448.00
3 13,448.00 18% 2,420.64 11,027.36
4 11,027.36 18% 1,984.92 9,042.44
The current value of a car bought 4 years ago is 9,042.44
Beginning value : purchased amount on 1st year. then, ending balance of the previous year from 2nd year onwards.
Depreciation : Beginning value * depreciation rate
Ending value : Beginning value - depreciation
Answers
Answer:
-49%
Step-by-step explanation:
i know this one by doing a long math formula
Answer:
49.0%
Step-by-step explanation:
take the 2 numbers and find the difference
51 - 26 = 25
take the difference and divide it by the orginal number
25÷51 = 0.49019607843
then times that number by 100
(25÷51) × 100 = 49.0196078431
so the number was decreased by 49.0 %
Answers
Answer:
Tommy earned $250 altogether.
Step-by-step explanation:
Let the total earning of Tommy be 'x' dollars.
Given:
Money spent on entertainment = $80
From the circle shown below:
Percent spent on clothes = 19%
Percent spent on food = 25%
Percent spent on other things = 14%
Percent of savings = 10%
Addition of all percents = 100%
⇒ 19% + 25% + 10% + 14% + % Entertainment = 100%
⇒ 68% + % Entertainment = 100%
⇒ % Entertainment = 100% - 68% = 32%
Therefore, as per question:
Hence, Tommy earned $250 altogether.