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olga55 [171]
2 years ago
10

PLS HELP

Mathematics
2 answers:
4vir4ik [10]2 years ago
5 0

Answer: 2/3

Step-by-step explanation:

14 is 2/3 of 21 so 2/3 cup per loaf

maksim [4K]2 years ago
5 0

Answer:

3/7

Step-by-step explanation:

It is like saying 14/21, if the answer was 2/3 it is going to be 18/21. It if was 1 1/2 cups, it would be 26/21.

Hope you get %100!

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What is the area of the polygon below?
sattari [20]
5*11+(10-5)*17=55+85=140
5 0
3 years ago
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The difference of the square of a number and 40 is equal to 3 times that number. Find the positive solution.
Wewaii [24]

Answer: The answer is 8.

Step-by-step explanation: The first step is to convert the expression into figures. We shall call the unknown number Y. So if we are told “the square of a number,” that means Y squared, or better still, Y^2. Further we are told “the difference between the square of a number and 40” and that can be written as;

Y^2 - 40.

Next we are told that this expression is equal to 3 times that number (that is 3Y). That can now be written out as follows,

Y^2 - 40 = 3Y

If we move all expressions to one side of the equation, what we would have is,

Y^2 - 3Y -40 = 0

(Remember that when a positive value crosses to the other side of an equation it becomes negative and vice versa)

We now have a quadratic equation

Y^2 -3Y - 40 = 0

By factorizing we now have

(Y -8) (Y + 5) = 0

Therefore Y - 8 = 0 or

Y + 5 = 0

Hence, Y = 8 or Y = -5

Since we are asked to calculate the positive solution, Y = 8

5 0
3 years ago
What is the length of AC?
Elan Coil [88]

well, the triangle is an isosceles, so it twin sides, and the twin sides make twin angles, as we see by the tickmarks on A and C, meaning AB = BC.

\bf x+4=3x-8\implies 4=2x-8\implies 12=2x\implies \cfrac{12}{2}=x\implies 6=x \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ AC\implies x+4\implies 6+4\implies 10

6 0
3 years ago
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Guys help me solve this plzzz:(((;;(;;;((;
Maru [420]

Answer:

It should be 60 degrees

correct me if wrong but since it's supplementary, you subtract 155 - 35 then from 180 and you get 60

Im not 100% about this tho but like 75% sure

3 0
2 years ago
(4.3*10^4)^2 in scientific notation
xeze [42]
1.849x10^9 or 1.849e9
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2 years ago
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