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.

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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]

$15-x10=5(3x-2)\\\\
x(x+2)=x^2+2x$