4 years ago

I need help wit dis question plz

Mathematics

1 answer:

sasho [114]4 years ago

8 0

Answer:

a c d e

Step-by-step explanation:please give branilest

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What is the solution to8(5-r)/5=-2r

Dmitry [639]

Expand 8(5-r)/5=-2r as indicated: 40 - 8r

----------- = - 2r

Multiply both sides by 5, obtaining 40 - 8r = - 10r

Combine like terms: 40 = - 2r

Divide both sides by -2: -20 = r

The solution to 8(5-r)/5=-2r is -20. Verify this by subbing -20 for r in the given equation.

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3 years ago

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A drug company developed a new formula for their headache medication. To test the effectiveness of this new formula, 250 people

irina1246 [14]

Answer: correct is B

Step-by-step explanation:

Annex the bar graph that shows which improvement time is less, the new formula being more effective, with an average of 55 minutes and the average of the old formula is 75 minutes, which leads to the conclusion that the new formula is better than the previous one with a time difference of 20 minutes.

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4 years ago

Solve for x.<br> (x - 2)(x + 4) > 0

ivanzaharov [21]

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3 years ago

Can someone pleaseeee help and if you’re correct i’ll give brainliest

Naily [24]

Answer:

Rows: 3+3+3+3=12

Columns: 4+4+4=12

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3 years ago

Find f(-2) for the function:<br><br> f(x)= 3x^2-1, x<1<br> x+2, x> 1

azamat

F(x) = 3x² - 1
f(-2) = 3(-2)² - 1
f(-2) = 3(4) - 1
f(-2) = 12 - 1
f(-2) = 11

f(x) = x < 1
f(-2) = -2 < 1

f(x) = x + 2
f(-2) = -2 + 2
f(-2) = 0

f(x) = x > 1
f(-2) = -2 > 1
f(-2) = -2 < 1

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3 years ago