3 years ago

What is double of 90?

Mathematics

2 answers:

Burka [1]3 years ago

3 0

180, because its 90+90 or 90*2

Pachacha [2.7K]3 years ago

3 0

Like the other person said it will be 180, because when you multiply 90*2=180 Also 90+90=180 Hope this can help you!

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a woman is three times as old as her daughter six years ago the sum of their ages was 36 find the age of the daughter

sweet [91]

Answer:

12 hope this helps

Step-by-step explanation:

7 0

3 years ago

Please help me with this #7

Alex

$\text{Given that,}\\\\\text{First term,}~ a_1 = -8~~~~...(i)\\\\\text{12th term,}~ a_{12} = -52~~~...(ii)\\\\\text{Common difference is d.}\\\\(ii)\div(i):\\\\\dfrac{a_{12}}{a_1} = \dfrac{-52}{-8}\\\\\\\implies \dfrac{a_1 + (12-1)d}{a_1} = \dfrac{52}8\\\\\\\implies \dfrac{-8+11d}{-8} = \dfrac{52}8\\ \\\\\implies -8+11d = \dfrac{52(-8)}8\\\\\\\implies -8+11d = -52\\\\\\\implies 11d = -44\\\\\\ \implies d = \dfrac{-44}{11} = -4$

$\\\text{86th term,} ~a_{86} = a+ (86-1)d \\\\~~~~~~~~~~~~~~~~~~~~=-8+85d\\\\~~~~~~~~~~~~~~~~~~~~=-8+85(-4)\\\\~~~~~~~~~~~~~~~~~~~~=-348\\\\\text{Hence, the 86th term is}~ -348$

5 0

2 years ago

The sum of twice a number, n, and four is at most sixteen. What is the largest value of the number?

Crank

Answer: 6

Step-by-step explanation:

<u>"The sum of twice a number, n, and four is at most sixteen"</u>

<u />

2n + 4 ≤ 16

2n ≤ 12

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3 years ago

Does anyone have a clue lol. I know it has something to do with proportion but to me it makes 0 sense.

katrin [286]

57508.5 and 120, it gives you ounces for first one and then asks for pounds and it gives you the number of ounces per pound on the side so you do 920136/16 and for the second you do the same thing but with the number of feet per yard and you would do 360/3

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2 years ago

if 3 ounces of medicine must be mixed with 9 ounces of water, how many ounces of medicine must be mixed with 16 ounces of water

Katen [24]

10 ounces of medicine.

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3 years ago

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