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monitta
2 years ago
8

A metal measuring tape expands when the temperature goes above 50°F. For every

Mathematics
1 answer:
den301095 [7]2 years ago
4 0

Answer:

The answer is 0.0096

Step-by-step explanation:

which is 0.00032 multiplyed by 30

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(05.08) Solve for x: 2 over quantity x minus 2 plus 7 over quantity x squared minus 4 equals 5 over x. (2 points) x = negative 4
Oxana [17]

Answer:

Step-by-step explanation:

The best way to do this is to use your LCM and eliminate the fractions.  To find the LCM you have to use all the denominators as a multiplier so the denominator in each term cancels out.  We will first factor the x-squared term to simplify and see what 2 factors are hidden there.

x^2-4 factors to (x + 2)(x - 2).  That means that our 3 denominators that make up our LCM are x(x+2)(x-2).  We will mulitply that in to each term in our rational equation, canceling out the denominators where applicable.

x(x+2)(x-2)[\frac{2}{(x-2)}+\frac{7}{(x-2)(x+2)}=\frac{5}{x}]

In the first term, the (x-2) will cancel leaving us with

x(x+2)[2] which simplifies to

x^2+2x[2]

In the second term, the (x+2)(x-2) cancels out leaving us with

x[7].

In the last term, the x cancels out leaving us with

(x+2)(x-2)[5] which simplifies to

x^2-4[5]

Now we will distribute through each cancellation:

2x²+4x;

7x;

5x²-20

Putting them all together we have

2x² + 4x + 7x = 5x² - 20

Combining like terms gives us a quadratic:

3x² - 11x - 20 = 0

Factor that however you find it easiest to factor quadratics and get that

x = 5 and x = -4/3

4 0
3 years ago
Which of the following best describes the solution to the system of equations below? -8x + 3y = -6 9x - 3y = 6 A. The system of
Reika [66]

Answer:

C. no solution

Step-by-step explanation:

6 0
2 years ago
Where do I plot those fractions
Klio2033 [76]

Answer:

plot decimal values

Step-by-step explanation:

One approach is to convert them to decimal using your calculator or long division:

3/4 = 0.75

7/9 ≈ 0.78

1/2 = 0.50

2/3 ≈ 0.67

Since the number line has 0.1 increments, you can place each value in between the right increments. For instance 3/4 you place between 0.7 and 0.8. You place it halfway because 0.75 is halfway between 0.7 and 0.8. It's ok to estimate the exact location in this case.

6 0
3 years ago
Read 2 more answers
Y= 5x + 4 <br> y= -3x - 12
tino4ka555 [31]

Answer:

x=-2    y=-6

Step-by-step explanation

5x+4=-3x-12

+3       +3x

8x+4=-12

    -4    -4

   8x=-16

  ÷8    ÷8

    x=-2

Looking for y too, plug x into the original equation

5(-2)+4

-10+4

-6

y=-6

6 0
3 years ago
Solve :p (algebra)<br><br><br>3+5
aleksandr82 [10.1K]

Answer:

8...

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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