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True [87]
4 years ago
10

Solve the proportion to determine the value of x. 2x / 5 = x+3 / 3

Mathematics
1 answer:
ale4655 [162]4 years ago
4 0
When you solve a proportion, your first step should be to cross-multiply.

\frac{2x}{5} = \frac{x + 3}{3}

When you cross-multiply, you should get this equation:

(2x)(3) = (x + 3)(5)

Now, solve it using algebra.

(2x)(3) = (x + 3)(5)       Multiply
       6x = 5x + 15         Subtract 5x from both sides
         x = 15

The value of x is 15.
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Find the inequality represented by the graph.<br> Can someone please help me!!!!!!
lapo4ka [179]

Answer:

y

Step-by-step explanation:

We first need to determine the equation of the line.

Thus, we will need to find our slope first. To do so, we need to pick two points from the line. We can use (0, 5) and (3, 1).

Now, we can use the slope formula. Therefore:

m=\frac{y_2-y_1}{x_2-x_1}

Let (0, 5) be (x₁, y₁) and let (3, 1) be (x₂, y₂). Substitute appropriately:

m=\frac{1-5}{3-0}=\frac{-4}{3}

Therefore, our slope is -4/3.

Now, we can use the slope-intercept form:

y=mx+b

Where m is our slope and b is the y-intercept.

We already determined that the slope is -4/3.

And (0, 5) tells us that the y-intercept is 5. Therefore, substitute:

y=-\frac{4}{3}x+5

Finally, we need to determine our inequality sign.

Notice that our line is dotted. Hence, we do not need “or equal to.”

Also, the blue shaded region is below our line. Therefore, y must be less than our equation.

Hence, our sign is less than.

Therefore, our equation is:

y

8 0
3 years ago
Find the value of the unknown number in the proportion 17/80=p/100
rjkz [21]
17/80 = p/100

p = 17/80 * 100

p = 0.2125 * 100

p = 21.25
8 0
4 years ago
Pablo tiene $150 pesos, se gastó la tercera parte de su dinero el domingo, y el lunes se gastó las 2/5
sergeinik [125]

Answer:

Step-by-step explanation:

3 0
2 years ago
In a laboratory, the count of bacteria in a certain experiment was increasing at the rate of 2.5 % per hour find the bacteria at
Daniel [21]

9514 1404 393

Answer:

  5187

Step-by-step explanation:

At the end of 1 hour, the count is 2.5% greater than at the beginning.

  5060 + 2.5% × 5060 = 5060 +126.5 = 5186.5

The count at the end of the hour was about 5187.

4 0
3 years ago
1+1=?<br> Sana Naman yung tamang sagot lang
Naily [24]

Answer:

2

Step-by-step explanation:

1+ 1 = 2

Hope this helps

plz mark as brainliest!!!!!!!

5 0
3 years ago
Read 2 more answers
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