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dem82 [27]
3 years ago
14

Is 4/7 equivalent to 12/21explain your answer.​

Mathematics
2 answers:
Anton [14]3 years ago
8 0

Answer:

Yes.

Step-by-step explanation:

You can always tell if fractions are equivalent by division.

Can 12 be divided by 4?

12 ÷ 4 = 3

So far, they are equivalent.

Can 21 be divided by 7?

21 ÷ 7 = 3

Therefore, this makes the fraction equivalent because 4 can go into 12 equally and 7 can go into 21 equally.

Rasek [7]3 years ago
6 0
4x3=12
7x3=21
so if u multiply the numerator and denominator by 3 u can see it’s equivalent
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To help solve the trigonometric inequality 2sin^2(x)+. cos(2x)-2<-1, Tracey successfully graphed the equations y=2sin^2(x) +c
vichka [17]

Answer: B

Step-by-step explanation: I took the quiz and got it right

Also, if you graph the equations on a graphing calculator, the lines are right on top of each other, so the first equation can't be less than -1, so no solutions

3 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7Dx%5E%7B2%7D%20%2B5x%2B%5Cfrac%7B4%7D%7B3%7D%3D2x-%5Cfrac%7B1%7D%7B3%7D%20
Ber [7]
X1= -4, x2= -1/2 is the correct answer
5 0
3 years ago
Alan wants to bake blueberry muffins and bran muffins for the school bake sale. For a tray of blueberry muffins, Alan uses 1/3 c
True [87]
So we know there are 12 eggs and they will be distributed like this:

12=x2+y1
and 4 cups of flour:
4=1/3x+1/2y

let's see if we can find a solution in which all the materials are used:
12=x2+y1
4=1/3x+1/2y//*6

12=2x+y
24=2x+3y//*6

substract from each other:
12=2y
y=2
12=2x+y
12=2x+2
10=2x
x=5

So if nothing is wasted, he can make 5 blueberry muffins (making 12*5=60) and 2 bran muffins (2*9=18), together 78 dollars,

would it be better if instead of the bran muffins he did blueberry muffins (which are more expensive?)
for the branberry muffins he will used the double amount needed for 1: so 1 cup of oil and 2 eggs. From this he can only make 1 tray of blueberry muffins (and some oil will be left over), which will cost 12 dollars, which is less than 18

so he better make 6 blueberry and 2 bran trays






6 0
3 years ago
I am a polygon in which all sides are congruent and all angles are congruent
NikAS [45]
The answer is a square because it is a polygon and all sides are congruent and angles too
3 0
3 years ago
Translate: The quotient of a number t and 7, plus 2, is -4 ?
Tems11 [23]

The quotient of a number t and 7, plus 2, is -4 ?

t/7 +2 = -4


4 0
3 years ago
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