3 years ago

I’m not sure about this question can someone help me please

Mathematics

1 answer:

Ksju [112]3 years ago

5 0

-10y^2
Explanation: when combining like terms everything cancels out except for -10y^2

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Please help me I am on a test

Sergeu [11.5K]

Answer:

Step-by-step explanation:

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3 years ago

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After a day of shopping, Hannah spent $150. This is 75% of the amount she got from her mom. How much money did she get from her

azamat

Answer:

Hannah got $200 for her mom

Step-by-step explanation:

With the numbers in this question you don't even have to worry about percentages.

You can think of it in quarters:

75% is 3 quarters of 100%

(25% + 25% + 25% + 25%)

$150 is 3 quarters of $200

($50 + $50 + $50 + $50)

Hope this helps and isn't a confusing way of explaining it! :)

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4 years ago

What’s the formula to -1/2,-3/10,-9/50,-27/250,....

laila [671]

Answer:

The formula is ⇒ $\frac{-1}{2}(\frac{3}{5})^{n-1}$

Step-by-step explanation:

∵ The sequence is -1/2 , -3/10 , -9/50 , -27/250

∵ (-3/10) ÷ (-1/2) = 3/5

∵ (-9/50) ÷ (-3/10) = 3/5

∴ It is a geometric sequence

∴ The formula is Tn = ar^(n - 1)

Where a is the first term , r is the constant ratio between each two consecutive terms and n is the position of the number

∴ Tn = -1/2 ( 3/5)^(n - 1)

∴ $Tn= \frac{-1}{2}(\frac{3}{5})^{n-1}$

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3 years ago

Round 3.691 to the nearest tenth.

Alja [10]

3.691 rounded by the nearest tenth is 3.7

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The measure of the angles of a triangle are 55 degrees 25 degrees in 100 degrees what is the measure of the largest exterior ang

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Ur mom built like the brainpower

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2 years ago