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svet-max [94.6K]
3 years ago
15

Х = 7y - 22 Зу - х = 14 Need help asap

Mathematics
1 answer:
lbvjy [14]3 years ago
3 0

Answer:

SUBSTITUTION METHOD:

3y - 7y - 22  = 14

-4y - 22 = 14

-4y = 14 + 22

-4y = 36

y = 36/-4

y = -9

Hope it helps!

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A biased dice is rolled 100 times.
morpeh [17]

Answer:

0.69 or 69% :)

Step-by-step explanation:

Prime numbers: 2, 3, 5

Now lets add :)

29 + 26 + 14

29 + 40

69

Now we add all numbers together and divide by our first number 69 :)

12 + 29 + 26 + 9 + 14 + 10

41 + 26 + 9 + 14 + 10

67 + 9 + 14 + 10

76 + 14 + 10

90 + 10

100

69/100 = 0.69 = 69% :D

Have an amazing day!!

Please rate and mark brainliest!!

5 0
2 years ago
What’s the value of r?
-BARSIC- [3]

Answer:

r = 4

Step-by-step explanation:

z ^ (7/10) * z^ ( 33/10)

We know that a^ b* a^c = a^(b+c)

z^ (7/10 +33/10)

z^ (40/10)

z^4

r = 4

5 0
3 years ago
Mark the red letter shown in the brackets the subject of the formula
iVinArrow [24]

Given equation is

A=lb

Now

b=\frac{A}{l}

5 0
2 years ago
Hi. Please I need help with these questions.
VashaNatasha [74]

9514 1404 393

Answer:

  21x² +20x +100 = 0

Step-by-step explanation:

We know the sum of the roots of x² +bx +c = 0 is -b, and their product is c. If the roots are α and β, then ...

  • α+β = -b
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The sum of the roots of the new equation will be ...

  -b' = (α+1/β)+(β+1/α) = (α+β) +(1/α +1/β) = (α+β)(1 +1/(αβ))

The product of the roots of the new equation will be ...

  c' = (α+1/β)(β+1/α) = αβ +2 +1/(αβ)

Using the above relations for (α+β) and αβ, we find that ...

  -b' = (-b)(1 +1/c)

  c' = c + 2 + 1/c

For the given equation, our definition of b and c is ...

  b = 2/3

  c = 7/3

so the new equation has values ...

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So, the equation with the roots of interest is ...

  x² +20/21x +100/21 = 0

Multiplying by 21 gives ...

  21x² +20x +100 = 0

4 0
3 years ago
Select all values of x that make the inequality true: (6x<24)
Stolb23 [73]

9514 1404 393

Answer:

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Step-by-step explanation:

Divide both sides by 6 to see what those values should be:

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Of course all negative numbers are less than 4, so choices A and B are correct. The given positive numbers are not less than 4, so the remaining choices are not correct.

8 0
3 years ago
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