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3 years ago

5

Darren is on a super effective diet. He has lost 16% of his weight this month. If he started with 75 kg, how much does he weigh

now?

2 answers:

Andre45 [30]3 years ago

6 0

Answer:

63 kg

Step-by-step explanation:

Since Darren lost 16% of his weight, this means he weighs

100-16 = 84% of what he used to.

84% = 84/100 = 0.84; this means Darren weighs

0.84(75) = 63 kg

Papessa [141]3 years ago

5 0

16/100=0.16
0.16*75=12
75-12=63

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Complete the statement with equal to greater than or less than 5/5 * 2 3/4

Westkost [7]

5/5*2 3/4 > 2 3/4

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3 years ago

What is 9 multiplied by9

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3 years ago

13. Jody is supplying his food truck for the week. He buys 32 pounds of pork and 50 pounds of chicken for a total of $185. He re

larisa [96]

Answer:

Pork is $1.75 per pound (x=1.75)

Chicken is $2.58 per pound (y=2.58)

Step-by-step explanation:

<u>Key skills needed for this problem: Linear Equations, Systems, Elimination</u>

1) Use x and y for the pork and the chicken and you will get 2 equations:

32x + 50y = 185
8x + 20y = 65.6

We can use elimination in this system.

2) To use elimination, we can multiply the 2nd equation by -4:

-4(8x + 20y) = 65.6(-4) becomes -32x-80y = -262.40

3) Next add both equations:

32x + 50y = 185

+

-32x - 80y = -262.4

-----------------------------

-30y = -77.4

y = $2.58

4) Next we can substitute the y value into one of the equations. I like the first one so I used that one ---> 32x + 50(2.58) = 185

50(2.58) is equal to 129 so ---> 32x + 129 = 185

-129 -129

------------------------

32x = 56

Divide by 32 and get x= $1.75

5) Therefore, It is $1.75 per pound of pork, and $2.58 per pound of beef.

<em>Hope you understood and have a nice day!! :D</em>

4 0

3 years ago

ALGEBRA: Food Pantry sells its private label salad

CaHeK987 [17]

Answer: 48oz = $1.68, 32oz = $0.80

Step-by-step explanation:

Let A be the price of the 48oz bottle and B the price for the 32oz bottle.

We are told that:

A = B + $0.88

------

The unit price is defined as the $ per oz.

Let Au be the unit price for the 48oz size, and

Bu is the unit price for the 32oz size.

[This means that Au*(48) = A and Bu*(32) = B]

We are told that:

Bu + $0.01 = Au

=======

Find the cost of each.

A = B + $0.88

Au*(48) = Bu*(32) + $0.88

Substitute (Bu + $0.01) for Au

(Bu + $0.01)*(48) = Bu*(32) + $0.88

(48Bu + $0.48) = Bu*(32) + $0.88

16Bu + $0.48 = $0.88

16Bu = $0.40

Bu = $0.025

The 32 oz bottle sells for $0.025/oz, or $0.80 a bottle

B = $0.80

Since A = B + $0.88

A = $0.80 + $0.88

A = $1.68

5 0

3 years ago

The marks obtained by 10 student in a test are as follows: 3,7,6,2,8,5,9,1,4 and 10. find the mean mark

alekssr [168]

Answer:

$5.5$

Step-by-step explanation:

Mean:

The mean of a data set is commonly known as the average. You find the mean by taking the sum of all the data values and dividing that sum by the total number of data values. The formula for the mean of a population is

$\mu = \frac{{\sum}x}{N}$

The formula for the mean of a sample is

$\bar{x} = \frac{{\sum}x}{n}$

Both of these formulas use the same mathematical process: find the sum of the data values and divide by the total. For the data values entered above, the solution is:

$\frac{55}{10} = 5.5$

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2 years ago