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2 years ago

Which number will make the two fractions equivalent? 6/7=?/21

Mathematics

2 answers:

skelet666 [1.2K]2 years ago

7 0

Answer:

Step-by-step explanation:

multiply 6 by 3

motikmotik2 years ago

4 0

Answer:

It's super duper easy

Step-by-step explanation:

6/7=x/21

x=21×6/7

x=18

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Ira Lisetskai [31]

Answer:

Step-by-step explanation:

Given that According to a video streaming service, 48% of American couples are "cheaters", that is—they promise each other to watch a filmtogether, but one of them first watches it alone.

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But here there are not only two outcomes.

The other possibilities are:

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As much as say that 52% of couples are not cheating in this way.

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3 years ago

Which of the following statements are true.

LenaWriter [7]

Answer:3

Step-by-step explanation: The last 3

3 0

3 years ago

Find the zeros of y = x2 – 6x – 4 by completing the square.

katrin [286]

Answer:

The solutions to the quadratic equations are:

$x=\sqrt{13}+3,\:x=-\sqrt{13}+3$

Step-by-step explanation:

Given the function

$y\:=\:x^2\:-\:6x\:-\:4$

substitute y = 0 in the equation to determine the zeros

$0\:=\:x^2\:-\:6x\:-\:4$

Switch sides

$x^2-6x-4=0$

Add 4 to both sides

$x^2-6x-4+4=0+4$

Simplify

$x^2-6x=4$

Rewrite in the form (x+a)² = b

But, in order to rewrite in the form x²+2ax+a²

Solve for 'a'

2ax = -6x

a = -3

so add a² = (-3)² to both sides

$x^2-6x+\left(-3\right)^2=4+\left(-3\right)^2$

$x^2-6x+\left(-3\right)^2=13$

Apply perfect square formula: (a-b)² = a²-2ab+b²

$\left(x-3\right)^2=13$

$\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}$

solve

$x-3=\sqrt{13}$

Add 3 to both sides

$x-3+3=\sqrt{13}+3$

Simplify

$x=\sqrt{13}+3$

now solving

$x-3=-\sqrt{13}$

Add 3 to both sides

$x-3+3=-\sqrt{13}+3$

Simplify

$x=-\sqrt{13}+3$

Thus, the solutions to the quadratic equations are:

$x=\sqrt{13}+3,\:x=-\sqrt{13}+3$

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3 years ago

a bag contains 72 sweets. 16 are apple are flavoured and the rest are are starbery flavoured . write down the ratio of apple to

Soloha48 [4]

The required ratio of the given sweets is 2:7

Step-by-step explanation:

Given,

Total number of sweet = 72

Number of apple flavored sweet = 16

To find the ratio of strawberry sweets and apple sweets

So, the number of strawberry sweets = 72 - 16 = 56

Ratio of apple sweets and strawberry sweets = 16 : 56

= 2 : 7

3 0

3 years ago

A group of 4 friends are playing cards. The deck has 70 cards. To start the game the dealer makes a pile of 15 cards in the cent

fiasKO [112]

Answer:

15 cards.

Step-by-step explanation:

Because 70-15=60. 60 divide by 4 would be 15.

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3 years ago