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nekit [7.7K]
4 years ago
8

Solve 3[-x + (2 x + 1)] = X – 1. Х=

Mathematics
1 answer:
Strike441 [17]4 years ago
4 0

Answer:

x=-2

Step-by-step explanation:

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Derek wants to determine the height of the top of the backboard on the basketball goal at the playground. He places a standard 1
s344n2d4d5 [400]

Answer:

10.2 feet.

Step-by-step explanation:

We have been given that Derek places  a standard 12-inch ruler next to the goal post and measures the shadow of the ruler and the backboard. If the ruler has a shadow of 10 inches. We are asked t find the height of the backboard, if the backboard has a shadow of 8.5 feet.

We will use proportions to solve our given problem as ratio between sides ruler will be equal to ratio of sides of background.

\frac{\text{Actual height of ruler}}{\text{Shadow of ruler}}=\frac{\text{Actual height of backboard}}{\text{Shadow of backboard}}

\frac{12}{10}=\frac{\text{Actual height of backboard}}{8.5}

\frac{12}{10}*8.5=\frac{\text{Actual height of backboard}}{8.5}*8.5

1.2*8.5=\text{Actual height of backboard}

10.2=\text{Actual height of backboard}

Therefore, the actual height of the back-board is 10.2 feet.

4 0
4 years ago
A spinner has four sections lettered A, B, C, and D. The table shows the results of several spins. Find the experimental probabi
Degger [83]
Experimental probability is the outcome during a certain experiment. add up the total number of times it was spinned. You should get 40. To find the experimental probability of each section, simply divide the number by 40. This will give you the percentage for each one. For example, spinner A. 14/40=.35  Multiply this by one hundred to find the percentage (35%). Do this for all and let me know if you need help converting them to fractions. :)
5 0
3 years ago
Read 2 more answers
Factorise: 15x-10<br><br> expand: x(x+2)
tamaranim1 [39]
15-x10=5(3x-2)\\\\&#10;x(x+2)=x^2+2x
3 0
4 years ago
Ellen has 150 books. She wants to store an equal number of books in 2 containers. How many books should Ellen put in each contai
Aleks [24]

Answer:75

Step-by-step explanation:150÷2=75

3 0
4 years ago
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The sum of two numbers is 67 and the difference is 13 . What are the numbers?
svet-max [94.6K]

Answer:

27 and 40

Step-by-step explanation:


3 0
4 years ago
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