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iragen [17]
3 years ago
11

Solve for x x+9.72=21

Mathematics
1 answer:
Yakvenalex [24]3 years ago
8 0
I got 11.28. By subtracting 9.72 by 21 to get x alone
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The points ​(10​,14​) and ​(35​,49​) form a proportional relationship. Find the slope of the line through the points. Then use t
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The slope is 7/5 and the equation of the line is 5y - 7x = 0 if the points ​(10​,14​) and ​(35​,49​) form a proportional relationship.

<h3>What is the slope?</h3>

The ratio that y increase as x increases is the slope of a line. The slope of a line reflects how steep it is, but how much y increases as x increases. Anywhere on the line, the slope stays unchanged (the same).

\rm m =\dfrac{y_2-y_1}{x_2-x_1}

From the above formula, we can find the slope of the line:

m = (49-14)/(35-10)

m = 35/25

m = 7/5

The equation will be:

y = 7x/5 + c

here c is the y-intercept

Plug (10, 14) in the equation to find the value of c

14 = 7(10)/5 + c

c = 0

y = 7x/5  or

5y - 7x = 0

Thus, the slope is 7/5 and the equation of the line is 5y - 7x = 0 if the points ​(10​,14​) and ​(35​,49​) form a proportional relationship.

Learn more about the slope here:

brainly.com/question/3605446


#SPJ1

6 0
2 years ago
20 points !!! -3/8x-20+2x&gt;6
Semenov [28]

Answer:

x > 16

Step-by-step explanation:

- \frac{3}{8} x -20+2x>6

Add 20 to both sides:

-  \frac{3}{8} x + 2x > 26

Multiply 8 on both sides:

- 3x + 16x > 208

13x > 208

Divide by 13 on both sides:

x > 16

3 0
3 years ago
Read 2 more answers
1. A radio cost $20, Harold buys it for $12, what percent off the original price did he receive?
Dima020 [189]
1. 20•.4=8 so 40%
2. 20%
7 0
3 years ago
Read 2 more answers
Joe will take the 11:39 AM train to San Diego. The train is estimated to arrive in San Diego in 2 hours 44 minutes. What is the
KATRIN_1 [288]

Answer:

2:23 PM

Step-by-step explanation:

8 0
2 years ago
He radius r of a circle is increasing at a rate of 6 centimeters per minute. find the rate of change of the area when r = 35 cen
sergij07 [2.7K]
You can solve this problem by following the steps below:

 1. You need the formula for calculate the area of a circle, which is:

 A=πr²

 "A" is the area of the circle
 "r" is the radius of the circle (r=35 centimeters).

 2. Now, you must take the derivative. Then, the rate of change of the area is:

 dA/dt=(2πr)(dr/dt)

 3. The radius of change of the radius "r" with respect to time, is:

 dr/dt=6 cm/min

 4. Then, you have:

 dA/dt=(2πr)(dr/dt)
 dA/dt=2π(35 cm)(6 cm/min)
 dA/dt=420π cm²/min
3 0
3 years ago
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