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olga_2 [115]
4 years ago
7

What the answer tonthis question 10x=-4(2x-9)​

Mathematics
1 answer:
mylen [45]4 years ago
7 0

10x = 4(2x -9)

10x = 8x - 36

10x - 8x = -36 - 8x

2x = -36

2x ÷ 2 = -36 ÷ 2

x = -18

If you need a better explanation just as in the comments.

Happy to help! Please mark as BRAINLIEST! Thanks

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ryzh [129]
Try to use Socratic or Photomath
5 0
3 years ago
7 over 12 minus 5 over 12 as a fraction in simplest form
poizon [28]

Answer:

1/6

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
1) In 2001, there were about 62.5 thousand golden retrievers registered in the United States. In 2002, the number was 56.1 thous
ahrayia [7]
62500 - 56100 = 6400  - number of retrivers u lost per year.
Answer need to be lower then 62,5 and 56,1 thousand so no (A) and not (D)
Number is reduce by 6400 and starting amount was 62500, 2 zeros and end must stay there in answer so not (B)
Then it must be (C)

Or u can calculate 62500 - 9*6400 = 4900

5 0
3 years ago
The length of a picture is 15.75 inches shorter than twice the width. If the perimeter of the picture is 106.5 inches, find its
Vladimir79 [104]

Answer:

Length = 45.37 in

Width = 30.56 in

Step-by-step explanation:

Let the width of the picture be 'w' inches.

Given:

Perimeter of the picture is, P=106.5\ in

Length is 15.75 inches shorter than twice the width. So, length is:

l=2w-15.75

Now, we know that the perimeter of a rectangular shape is given as the sum of all of its side. So, the picture is also of rectangular shape and hence the perimeter is given as:

P=2l+2w

Plug in the values of 'l' and 'P' and solve for 'w'. This gives,

106.5=2w-15.75+2w\\106.5=4w-15.75\\106.5+15.75=4w\\4w=122.25\\w=\frac{122.25}{4}=30.56\ in

Therefore, the width of the rectangular picture is 30.56 inches.

Length of the picture is, l=2(30.56)-15.75=61.12-15.75=45.37\ in

So, length of the picture is 45.37 inches and width is 30.56 inches.

3 0
3 years ago
98 POINTS AND BRAINLIEST FOR BEST ANSWER!!!!
Phoenix [80]

A) We are told that at 2 hours, the velocity is 18 km/h and at 4 hours, the velocity is 4 km/h. Since we are relating two variables - let's give them names.

Let x = time and y = velocity. Since the velocity depends on the time (that is, the time influences velocity), this is a linear function. Any linear function can be written in slope intercept form as y = mx + b. The problem wants the situation in standard from of Ax + By = C, which can be found from slope intercept form.

So now we can make our line. Consider the ordered pairs of (2,18) and (4, 4) with them in (x, y) form. Finding the slope, m, between these points is as such:

m = y₂-y₁ / x₂-x₁

m = 4 - 18 / 4 - 2

m = -14 / 2 = -7.

Our slope is -7.

We take m = -7, x = 4, and y = 4 (it goes 4 km/h in 4 hrs) and use those three things to find the y-intercept.

y = mx + b

4 = -7 * 4 + b

4 = -28 + b

32 = b

So our equation of the line is y = -7x + 32. To put the equation into standard form, we need to place all the variables on one side of the equals sign, all the numbers on the other.

y = -7x + 32

7x + y = 32

In standard form, the equation for this situation is 7x + y = 32

***

To find out the velocity at 8 hours, we evaluate our function at x = 8. Either equation (standard form or slope intercept) works; we use standard form.

7x + y = 32

7*8 + y = 32

56 + y = 32

y = -24

At a time of eight hours, the bicycle is moving at -24 km/h.

5 0
4 years ago
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