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koban [17]
4 years ago
14

PLZ HELP ASAP!!! I WILL NAME BRAINLIEST!! 65 POINTS!! (:

Mathematics
1 answer:
astra-53 [7]4 years ago
6 0

Answer:

1. 44 + 3x

2. 2y - 8

3. x - 6

15. 5\frac{7}{8}

16. 6\frac{1}{3}

17. 3\frac{7}{9}

Step-by-step explanation:

1. 7² + 2² - 5 - 4 + 3x

   49 + 4 - 5 - 4 + 3x

       53 - 5 - 4 + 3x

           48 - 4 + 3x

              44 + 3x

2. - y - 5 + y + 2(2y-y) - 3

     -y - 5 + y + 4y - 2y -3

      -y - 5 + 5y - 2y - 3

          4y - 2y - 5 - 3

                2y - 8

3. 5x -3 - x - 3(x + 1²)

    5x - 3 - x - 3x - 3

      4x - 3x - 3 -3

           x - 3 -3

             x - 6

15.  7\frac{1}{4} - 1\frac{3}{8}

   = 7 \frac{2}{8} - 1\frac{3}{8}

   = \frac{58}{8} - \frac{11}{8}

   = \frac{47}{8} → 5\frac{7}{8}

16.  9 - 2\frac{2}{3}

   = \frac{54}{6} - 2\frac{4}{6}

   = \frac{54}{6} - \frac{16}{6}

   = \frac{38}{6} → 6\frac{2}{6} → 6\frac{1}{3}

17.  10\frac{1}{3}  - 6\frac{5}{9}

   =  10 \frac{3}{9} - 6\frac{5}{9}

   =    \frac{93}{9} - \frac{59}{9}

   =     \frac{34}{9} → 3\frac{7}{9}

Hope this helps.

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When partitioning a line segment, what does the rational form of the ratio 2:3 look like?
7nadin3 [17]

Answer:

This is pretty obvious, the answer is A, 2/3

Step-by-step explanation:

In mathematics, a ratio indicates how many times one number contains another. For example, if there are eight oranges and six lemons in a bowl of fruit, then the ratio of oranges to lemons is eight to six (that is, 8∶6, which is equivalent to the ratio 4∶3). Similarly, the ratio of lemons to oranges is 6∶8 (or 3∶4) and the ratio of oranges to the total amount of fruit is 8∶14 (or 4∶7).

Mark me brainliest!

8 0
3 years ago
Read 2 more answers
Lin is playing hand ball and wants the ball
olga2289 [7]

Lin should aim the ball at 7.8 feet away from point  B

From the question (see attachment), we have the following equivalent ratios:

AB : BE = DC :CE

This is so because triangles ABE and DCE are similar triangles.

Such that:

BE + CE = 20

AB = 16

DC = 16 + 9 = 25

So, we have:

AB : BE = DC :CE

16 : BE = 25: CE

Make CE the subject in BE + CE = 20

CE=20 - BE

Substitute 20 - BE for CE in 16 : BE = 25: CE

16 : BE = 25: 20 - BE

Express as ratio

\frac{16 }{ BE} = \frac{25}{ 20 - BE}

Cross multiply

16(20 - BE) = 25BE

Open bracket

320 - 16BE = 25BE

Collect like terms

25BE + 16BE = 320

41BE = 320

Divide both sides by 41

BE = 7.8

Hence, she should aim at 7.8 feet away from point  B

Read more about similar triangles at:

brainly.com/question/14285697

8 0
3 years ago
Please help y’all lots of point
Archy [21]

Answer:

\mathrm{Option \: C.}

x \ne-3, \:4

Step-by-step explanation:

F\left(x\right)=\frac{\left(x-4\right)\left(x+2\right)}{\left(x+3\right)\left(x-4\right)}

\left(x+3\right)\left(x-4\right)=0

x+3=0\\x+3-3=0-3\\x=-3

x-4=0\\x-4+4=0+4\\x=4

3 0
3 years ago
Simplify. (-2a^7y^4)(4ay^2)
dybincka [34]

Answer:

-8a^8y^6

Step-by-step explanation:

<h2><u>Lesson : Simplifying:</u></h2><h2><u /></h2><h2><u /></h2>

Given:

(-2a^7y^4)(4ay^2)

"Simplifying"

--------------------------------------------------------------------------------------------------------------

(-2a^7y^4)(4ay^2)<em />

<em>Remove the parenthesis</em>

<em />-2a^7y^4\cdot \:4ay^2<em />

<em>Multiply the numbers</em>

<em />-8a^7ay^4y^2<em />

<em>Apply the exponent rule</em>

<em />-8y^4a^{7+1}y^2<em />

<em>Add the numbers</em>

<em />-8y^4a^8y^2<em />

<em>Apply the exponent rule once again</em>

<em />-8a^8y^{4+2}<em />

<em>Add the numbers once again</em>

<em />-8a^8y^6<em />

<em />

<em />

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4 years ago
A back-to-back stem-and-leaf plot showing the points scored be each player on two different basketball teams is shown below.
dangina [55]
answer for the question is C
6 0
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