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2 years ago

Please help me solve for x

Mathematics

1 answer:

Stolb23 [73]2 years ago

6 0

Answer:

$x=11$

Step-by-step explanation:

Every perpendicular corner of a square is 90 degrees.

Lines are cut half diagonally.

$6x-21=45\\6x=66\\x=11$

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What process do you use to find the percent change of a quantity?

Sever21 [200]

First, we need to get the amount of change:
The amount of change can either be an increase or a decrease.
It can be calculated as follows:
amount of change = $\frac{"new"value - "old"value}{"old" value}$

If the amount of change is positive, then it is an increase
If the amount of change is negative, then it is a decrease

Then, we need to convert this amount into a percentage:
Changing the amount into a percentage can simply be done by multiplying this amount by 100
This means that:
% of change = amount of change * 100

Combining the two steps:
% of change = $\frac{"new"value - "old"value}{"old" value}$ * 100

Examples:
The original price of a certain product was $10. It then became $12. Find the % of increase.
% of change = $\frac{12-10}{10} * 100$ = 20%
This means that the price increased by 20%

The temperature decreased from 25 degrees to 20 degrees. Find the percentage of decrease.
% of decrease = $\frac{20-25}{25} * 100$ = -20%
This means that the temperature decreased by 20%

Hope this helps :)

7 0

2 years ago

Read 2 more answers

Cindy's yard is 30 feet long and 40 feet wide. Edward charges 2 cents per square foot to mow yards. How much would Cindy have to

r-ruslan [8.4K]

The answer is A 24$ because 30x40 is 1200 and 1200x 0.02 is 24

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3 years ago

Read 2 more answers

Tobin rows 2 miles per hour faster than her opponent. If it takes Tobin 30 minutes to finish a race, and it takes her opponent 4

Sunny_sXe [5.5K]

If we represent Tobin's speed as x, we can write her opponent's speed as
x-2 (since Tobin is 2 more than them). In addition, since it's in miles per hour, and 45 minutes is 3/4 of an hour, we can say that 3/4ths of her speed in miles per hour is how long the race is, so (3/4)(x-2)=distance of race. In addition, since it only took Tobin 30 minutes, and 30 minutes is half an hour, x/2 (half of her miles per hour) is the length of the race, so (3/4)(x-2)=(1/2)x. Expanding it, we get 3x/4-6/4=x/2. Subtracting x/2 (or 2x/4) from both sides, we get x/4-6/4=0 and by adding 6/4 to both sides we get x/4=6/4. Multiplying 4 to both sides, we get that x=6=Tobin's speed in miles per hour

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3 years ago

Which is a possible number of distinct real roots for a cubic function? Select all that apply.

Neko [114]

Answer:

Step-by-step explanation:

3 is a possible number of distinct real roots for a cubic function.

The maximum possible number of distinct roots are equal to the degree of any polynomial function.

Hence quadratic function has 2 roots

Cubic has 3

Linear has 1

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2 years ago

Which is greater. -7/12 or -5/9

ANEK [815]

Answer:

Damian here! (ﾉ◕ヮ◕)ﾉ*:･ﾟ✧

Step-by-step explanation:

-5/9 is the answer

-5/9 > -7/12

Hope this helps? :))

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2 years ago