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3 years ago

Solve: -7(3+6x)=9(-5x+7)

Mathematics

2 answers:

Ivan3 years ago

7 0

Answer:

x=28

Step-by-step explanation:

-7(3+6x)=9(-5x+7)

-21-42x=-45x+63

-21-42x-(-45x)=63

-21-42x+45x=63

-21+3x=63

3x=63-(-21)

3x=63+21

3x=84

x=84/3

x=28

12345 [234]3 years ago

4 0

Answer:

x=28

Step-by-step explanation:

-7(3+6x) = 9(-5x+7)

-21-42x=-45x+63

-42x=-45x+84

3x=84

x=28

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Consider a bag containing five red marbles, three green ones, one transparent one, three yellow ones, and three orange ones How

Novay_Z [31]

Answer: 56

Step-by-step explanation:

Given : Number of red marbles = 5

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Number of yellow marbles = 3

Number of orange marbles = 3

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3 years ago

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3 years ago

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tigry1 [53]

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Step-by-step explanation:

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3 years ago

Find the product of<br>3/5 × 7/11

andrew-mc [135]

Answer:

21/55

Step-by-step explanation:

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3 years ago

Read 2 more answers

H=2+25t-5t^2<br> Find all values for t for which the ball height is 12 meters

xenn [34]

Answer:

$t=\frac{5-\sqrt{17}}{2},\:t=\frac{5+\sqrt{17}}{2}$

$t=0.43845\dots ,\:t=4.56155\dots$

Step-by-step explanation:

$12=2+25t-5t^2$

$2+25t-5t^2=12$

$-5t^2+25t-10=0$

$\frac{-25+\sqrt{25^2-4\left(-5\right)\left(-10\right)}}{2\left(-5\right)}$

$\frac{-25-\sqrt{25^2-4\left(-5\right)\left(-10\right)}}{2\left(-5\right)}$

$t=\frac{5-\sqrt{17}}{2},\:t=\frac{5+\sqrt{17}}{2}$

$t=0.43845\dots ,\:t=4.56155\dots$

3 0

3 years ago