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Lisa [10]
3 years ago
15

What is 0.9(x-20)=830 Rounded to the Hundreths (second) decimal place

Mathematics
1 answer:
enot [183]3 years ago
4 0

Answer:

x= 942.22

Step-by-step explanation:

.9x-18=830

.9x=848

x=942.222222222

which will be x= 942.22

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Write the equation of line AB in slope-intercept form, given the points A(0,5) and B(-5,-10) . In your final answer, include all
Evgesh-ka [11]

Answer:

y = 3x + 5        

Step-by-step explanation:

1) First, find the slope between the pair of points. Use the slope formula m = \frac{y_2-y_1}{x_2-x_1}. Substitute the x and y values of points A and B into the formula and simplify:

m = \frac{(-10)-(5)}{(-5)-(0)} \\m  = \frac{-10-5}{-5-0} \\m = \frac{-15}{-5} \\m = 3

So, the slope is 3.

2) Now, identify the y-intercept of the line, or the point at which the line intersects the y-axis. All points on the y-axis have an x-value of 0. We're told that (0,5) is a point the line intersects, and since it has an x-value of 0, that must be the y-intercept.  

3) Using slope-intercept format, represented by the equation y = mx + b, write the equation of the line. Remember that the number in place of m, or the coefficient of the x-term, is the slope. So, substitute 3 for m. Also, remember that b represents the y-intercept of a line, so substitute 5 in its place, too. This gives the following answer:

y = 3x + 5

7 0
3 years ago
Please help I can’t solve this
Vika [28.1K]

1.25

If you take the difference between two y axis numbers (say 5 and 10) which is 5 and the difference between two X axis numbers (say 4 and 8) which is 4. The y axis is the rise(5) and the x axis is the run(4). Using the formula rise/run (5/4) you can calculate the answer to be 1.25.

5 0
3 years ago
X : 14= 7: 8<br> can someone solve this for me and explain me
Vanyuwa [196]

x:14 = 7:8

x:14 = x/14

7:8 = 7/8

x/14 = 7/8

Multiply the numerator of the 1st ratio with the denominator of the 2nd.

And multiply the numerator of the 2nd ratio with the denominator of the 1st.

Doing so, we get -

x * 8 = 7 * 14

So, 8x = 7 * 14

8x = 98

We divide 98 by 8 (transposition method)

x = 98/8

Therefore, x = 12.25

6 0
3 years ago
Please help me please!!
Tpy6a [65]

Answer:

Extracting out that inner right angle.

Hypotenuse = 8

Height = h

Adjacent :

=  \frac{10}{5}  = 2

Height, h :

{ \tt{h =  \sqrt{ {8}^{2}  -  {5}^{2} } }} \\ { \tt{h =  \sqrt{64 - 25} }} \\ { \tt{h =  \sqrt{39} }} \\ the \: height \: is \: { \boxed{6.2}} \: units

3 0
3 years ago
Colton swam once along the length of a pool that has a perimeter of 124 yd. The width of the pool is 20 yd. How many feet did Co
Vesna [10]
If I could give you an answer, I would. But I'm terrible at Math so, sorry
3 0
3 years ago
Read 2 more answers
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