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Crazy boy [7]
3 years ago
15

X -(4x- 7) = 5 x- ( x+ 21

Mathematics
1 answer:
Solnce55 [7]3 years ago
6 0

Answer:

x=4

Step-by-step explanation:

<u><em>The question is</em></u>

Find the value of x

we have

x-(4x-7)=5x-(x+21)

solve for x

Eliminate parenthesis both sides

Remember that

(-1)(-1)=+1\\(-1)(+1)=-1

x-4x+7=5x-x-21

Combine like terms

-3x+7=4x-21

Group terms that contain the same variable

4x+3x=7+21\\7x=28\\x=4

<u><em /></u>

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Suppose the polynomial f(x) has the following end behavior: as x approaches infinity, f(x) approaches infinity, and as x approac
galina1969 [7]

Answer:

C. x³+10x²−5x+5

E. 7x⁵+4x²

F. x+8

Step-by-step explanation:

The graph they described should look something like the one i drew below.

So all you have to do is look at the number with the highest exponent.

If the exponent is an odd number and the x is positive then that function will have an end behavior like the picture i posted.

x³ is good

-x³ is bad because of the negative sign

x² is bad because exponent is even

x⁷ is good

123x¹ is good

6 0
3 years ago
Please help me with dis ion understand pwese help me :(
Morgarella [4.7K]

Answer:

The formula for calculating the circumference of a circle is 2*pi*r. Because pi does not have an end, we'll use 3.14, since that is the approximate value of pi.

2*6*3.14 = 37.68

The outer rim of the pool is about 37.68 meters long

Step-by-step explanation:

It’s probably 40 because it says about how long not exactly.

I hope this helped

6 0
2 years ago
Read 2 more answers
If I make $7.25 a hour and I work for three days how much money is that every two weeks
trasher [3.6K]

There are a couple of things you didn't mention. 
In order to come up with an answer to the question,
I have to assume reasonable numbers for them, and
then answer the question that I have invented.

Assumption #1:  Each day that you work, you work for 8 hours.

Assumption #2:  You work for three days each week.

If those assumptions are true, then you earn

  ($7.25 / hour) x (8 hours/day) x (3 days/week) x (2 weeks)  =

       ($7.25 x 8 x 3 x 2)  =  $348  before taxes and other deductions.

3 0
3 years ago
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The equation of a parabola is 1/32 (y−2)2=x−1 .
Andru [333]

The given equation of parabola is

\frac{1}{32} (y-2)^2 = x-1

Which can also be written as

x = \frac{1}{32} (y-2)^2 +1

Here vertex (h,k) is (1,2)

And value of a is

a = \frac{1}{32}

Formula of focus is

(h+ \frac{1}{4a} , k)

Substituting the values of h,k and a, we will get

(1+ \frac{1}{4*(1/32) } , 2} = (1+ 8,2) = (9,2)

Therefore the correct option is the last option .

6 0
3 years ago
Read 2 more answers
when is better to use the unit circle vs. right triangles vs. trigonometric identities? Give an example of each and explain why.
Cerrena [4.2K]

Answer:

In an introductory trignometry course, there are many options for introducing trigonometric functions: • As ratios of sides of right triangles ...

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7 0
3 years ago
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