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mario62 [17]
3 years ago
14

3. Which value of x makes the equation 3.5(2x - 4) = 21 true

Mathematics
1 answer:
Grace [21]3 years ago
7 0

Answer:

5

Step-by-step explanation:

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Can someone help pls omg
hodyreva [135]

Answer:

see explanation

Step-by-step explanation:

Sum the sides of both polygons and equate.

(20)

x + 4 + x + 2 + x + 5 = 2(x + 1) + 2(x + 3) ← distribute parenthesis

3x + 11 = 2x + 2 + 2x + 6

3x + 11 = 4x + 8 ( subtract 3x from both sides )

11 = x + 8 ( subtract 8 from both sides )

3 = x

(21)

5(12x) = x + 7 + 6x + 9 + x + 10

60x = 8x + 26 ( subtract 8x from both sides )

52x = 26 ( divide both sides by 52 )

x = \frac{26}{52} = \frac{1}{2}

4 0
3 years ago
A box contains 1 4/5 pounds of pasta. How many ounces of pasta are<br> in the box
Scorpion4ik [409]

Answer: 1 4/5 pounds is equal to 28.8 ounces

Step-by-step explanation:

1 pound is equal to 16 ounces.

6 0
2 years ago
12 is what percent of 10
Delicious77 [7]
Your answer is 1.2.


I hope I helped you! :)
5 0
3 years ago
Read 2 more answers
27.) Find the sum of the length of line segments EF and CD
Lelechka [254]

Answer:

5√10

Step-by-step explanation:

The distance between two points A(x_1,y_1) and B(x_2,y_2) on the coordinate plane is given by:

|AB|=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2 }

From the image attached the coordinates of the points are E(-1, -1), F(8, -4), C(-7, -4) and D(-1, 2).

Hence the lengths of the line segment EF and CD are:

|EF|=\sqrt{(8-(-1))^2+(-4-(-1))^2} =\sqrt{90}=3\sqrt{10} \\\\CD=\sqrt{(-1-(-7))^2+(-2-(-4))^2}=\sqrt{40}  =2\sqrt{10} \\\\Therefore:\\\\|EF|+|CD|=3\sqrt{10} +2\sqrt{10} =5\sqrt{10}

6 0
3 years ago
The perimeter of a square is 23.28 inches. What is the length of each side of the square?
Ilia_Sergeevich [38]

Answer: 5.82in.

Step-by-step explanation: divide 23.28 inches by 4. a square has 4 sides so thats why i divided by 4 to get the answer of 5.82in.

4 0
3 years ago
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