PLEASE HELP 70 POINTS!!!! I WILL GIVE BRAINLIEST AND THANKS

Mathematics

2 answers:

joja [24]3 years ago

6 0

1. the fourth
2. the second
3. the first
4. the second
5.the third

____ [38]3 years ago

4 0

1. Second one

2. Second one

3. First one

4. No

5.2

Hope this helped you.

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Can someone help me with this? It's due tomorrow

Alina [70]

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2 years ago

Find the common ratio of the geometric sequence 11, -55, 275,...11,−55,275,...

Kaylis [27]

Answer:

r = -5

Step-by-step explanation:

common ratio (r) is found be dividing one term by its preceding term:

r = 275 ÷ -55 = -5

or, r = -55 ÷ 11 = -5

Therefore, r = -5

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2 years ago

Mary wants to make 20 gallons of a 52% acid solution by mixing together a 84% acid solution and a 4% acid solution. How much of

Setler [38]

Answer:

12 gallons 84%
8 gallons 4%

Step-by-step explanation:

I like to use an "X-diagram" to solve mixture problems. On the left side are the constituents of the mix; in the middle is the result of the mix; and on the right side are the differences between the numbers on each diagonal. These differences are the ratio numbers for the mix.

Here, that means the ratio of 84% solution to 4% solution is ...

48 : 32 = 12 : 8

Note that the last two "ratio numbers" were chosen so their sum is 20, hence they represent the number of gallons of the corresponding constituent in the mix. (The sum of the first two ratio numbers is 48+32=80, so to get a sum of 20, we divide each by 4.)

Mary must use ...