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bixtya [17]
3 years ago
7

Please HELP me with 21,22,23 and explain

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
7 0
21. The answer is 453. I put it in the calculator and got 452.5, so I rounded to 453. If it's 5 or more round up, 4 or less round down.
22. 14.1 I did the same thing it came out as 14.06, but the 6 made me round to 1.
23. $4.1 I think you get the concept now.
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A car is driving at a speed of 45mi/h. what is the speed of the car in feet per minute
Mama L [17]
<span>how many feet= 1mile
how many minutes = 1hr 

5280ft=1mile
60mins=1hr 
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divide by 60
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6 0
3 years ago
Read 2 more answers
SOMEONE PLEASE JUST ANSWER THIS FOR BRAINLIEST!!!
Sloan [31]

ANSWER

P-G = 11{w}^{4} - 5 {w}^{2}  {z}^{2}   - 4z^{4}

EXPLANATION

The given polynomials are:

G =  - 3 {w}^{4}  + 2 {w}^{2}  {z}^{2}  + 5z^{4}

and

P = 8 {w}^{4}   - 3{w}^{2}  {z}^{2}  + z^{4}

We want to subtract these two polynomials.

P-G = 8 {w}^{4}   - 3{w}^{2}  {z}^{2}  + z^{4}  - (- 3 {w}^{4}  + 2 {w}^{2}  {z}^{2}  + 5z^{4} )

Expand the right hand side to obtain:

P-G = 8 {w}^{4}   - 3{w}^{2}  {z}^{2}  + z^{4}   + 3 {w}^{4}   -  2 {w}^{2}  {z}^{2}   -  5z^{4}

Group the similar terms:

P-G = 8 {w}^{4}  + 3 {w}^{4}- 3{w}^{2}  {z}^{2} -  2 {w}^{2}  {z}^{2}   -  5z^{4} + z^{4}

Combine the similar terms to get:

P-G = 11{w}^{4} - 5 {w}^{2}  {z}^{2}   - 4z^{4}

7 0
3 years ago
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vova2212 [387]
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3 years ago
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erma4kov [3.2K]

Answer:

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Step-by-step explanation:

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5x = 140 ( divide both sides by 5 )

x = 28

3 0
3 years ago
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Serjik [45]
  There are a number of possible combinations for this open-ended question, so here's an example question and answer, in which the two are non-related:
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7 0
3 years ago
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