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Oksanka [162]
4 years ago
5

Select all equations that have the solution x = 7. 3(x - 5) = 1 + 5(x - 6) 2(x + 7) = 28 6(2x - 1) - 12 = -2(x + 10) 60 = 4(x +

8) please i need help
Mathematics
1 answer:
Paha777 [63]4 years ago
5 0

Answer: 2(x+7) , 60=4(x+8), and 3(x-5)=1+5(x+6)

Step-by-step explanation:

Just simplify all the equations and you get 7 for those 3

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Select all shapes that have a volume of \small 36\pi cubic units.
Gnesinka [82]

Answer:

Step-by-step explanation:

Chelsea is making a kite in the shape of a triangle. To determine if the triangle is a right triangle, Chelsea completed the following steps.

Step 1:

Find the side lengths of the triangle: 30 inches, 24 inches, 18 inches.

Step 2:

Substitute the values into the Pythagorean theorem: 18 squared + 24 squared = 30 squared.

Step 3:

Combine like terms: (18 + 24) squared = 30 squared.

Step 4:

Evaluate each side: 1764 not-equals 900.

Chelsea says the triangle is not a right triangle. Which best describes the accuracy of her explanation?

The triangle is actually a right triangle. In step 2, Chelsea incorrectly substituted the values into the Pythagorean theorem.

The triangle is not a right triangle, but in step 2 Chelsea incorrectly substituted the values into the Pythagorean theorem.

The triangle is actually a right triangle. In step 3, Chelsea incorrectly rewrote the expression on the left side of the equation.

The triangle is not a right triangle, but in step 3, Chelsea incorrectly rewrote the expression on the left side of the equation.

5 0
3 years ago
I thought of a number, multiplied it by 2 1/2 , divided the result by 1 1/5 , subtracted 7/18 from it, and got 1 5/6 . What was
motikmotik

To figure out what the number is, just do the inverse operations in the opposite order:

Start by adding 7/18 to 1 5/6, which gives you 2 2/9.

Next, multiply 2 2/9 by 1 1/5, which gives you 2 2/3.

Finally, divide 2 2/3 by 2 1/2, which gives you 1.06666...

Therefore, the number you thought of is 1.06666...

<em>Hope this helps! :)</em>

8 0
3 years ago
A triangle has side lengths of 7cm, 5c and c cm enter a value to complete the inequality that describes the possible values for
loris [4]

Answer:

sqaure root of 24.

Step-by-step explanation:

If you go by the pythagorean theorem, then what we would do is take the longest length which is 7 and square it. Because the equation is a squared + b squared = c squared. In this equation, 7 is c, and 5 would be b. So in theroy, a would be the root of 24.

4 0
4 years ago
Trina rolled a number cube three times determine the probability of rolling and even number on each roll
LuckyWell [14K]
1/2 x 1/2 x 1/2 = 0.125

Assuming the dice is six-sided, we know that there are three even numbers. 3/6 can be simplified to 1/2. Since you want to get an even number three times, and you are using the same dice, you must multiple 1/2 by itself three times.
6 0
4 years ago
Which equation is equivalent to the equation 6x+9=12?
erica [24]

Answer:

x=1/2

Step-by-step explanation:

7 0
4 years ago
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