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marysya [2.9K]
3 years ago
8

20%2B%208%20is%20x-a%20then%20the%20value%20of%20a%20is%3F%5C%5C" id="TexFormula1" title="If one factor of the expression x^{4} - ax^{3} + 5x - a + 8 is x-a then the value of a is?\\" alt="If one factor of the expression x^{4} - ax^{3} + 5x - a + 8 is x-a then the value of a is?\\" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
meriva3 years ago
6 0
I cant see the whole quwstions
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Factorise 25x+15 mate
Ivanshal [37]

Answer:

5(5x+3)

Step-by-step explanation:

25x=5*5x

15=5*3

5*5x+5*3

Factor out the Common 5

5(5x+3)

6 0
3 years ago
Algebra 2 help. <br> can somebody help me find the answer
stiks02 [169]

The curved line crosses the X-axis at -6 and 5

The answer is the second choice.

7 0
3 years ago
Physics what does above horizontal line mean
Illusion [34]
A line in the horizon meaning a straigh flat line, its counterpart is a vertical line which is up and down. If you look at an x/y line, the x line is the horizon line 
8 0
3 years ago
A girl ran from her home to a store at the rate of 6 mph, and she walked back home at the rate of 4 mph. if it took 15 minutes f
viva [34]

Home is 0.6 miles away from the store

How to solve such time related questions?

The key concept for solving such questions is the relationship between speed, distance and time.

The relationship between them is Distance = Speed x Time

Given:-

Total time taken by girl to complete the trip = 15 minutes = \frac{1}{4} hours

Speed while riding going = 6 miles per hour

Speed while coming back = 4 miles per hour

Total time taken by girl  =

Time taken while going +   Time taken while coming back      - (1)

  Let x be distance from home to store

       \frac{x}{6} =  Time taken while going

\frac{x}{4} = Time taken while coming back

    Substituting in (1) we get

      \frac{1}{4} =  \frac{x}{6} + \frac{x}{4}

      \frac{1}{4} =  \frac{2x + 3x}{12}

       \frac{1}{4} =  \frac{5x}{12}

      x= \frac{12}{20}

    x = 0.6 miles

Thus home is 0.6 miles away from the store

Learn more about time related  here :

brainly.com/question/12759408

#SPJ4

6 0
2 years ago
Solve. x2 + 14 = 9x A) x = 2, x = 7 B) x = 3, x = 5 C) x = −2, x = −7 D) x = −3, x = −5
chubhunter [2.5K]

Answer:

A) x = 2, x = 7

Step-by-step explanation:

x^2 + 14 = 9x

Subtract 9x from each side

x^2-9x + 14 = 9x-9x

x^2-9x + 14 = 0

What 2 numbers multiply to 14 and add to -9

-7*-2 = 14

-7+-2 = -9

(x-7)(x-2) = 0

Using the zero product property

x-7 = 0   x-2 =0

x=7   x=2

7 0
3 years ago
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