3 years ago

2 Points

1 answer:

8 0

Move constant the right side and change it’s sign 3 x > 13 - 4 , subtract the number 3 x > 9 , divide both sides of the inequality by 3 , x > 3

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If you have a lowest score of 21 and a range of 47, your highest score will be:________

aalyn [17]

Answer: 68

Step-by-step explanation:

range=47 lowest score = 21 let highest score =x

Range=highest score - lowest score

47 = x - 21

x = 47 + 21

x = 68

Therefore the highest score is 68

6 0

3 years ago

Erica solved the equation −5x − 25 = 78; her work is shown below. Identify the error and where it was made. (5 points)

NemiM [27]

If you would like to solve the equation -5x - 25 = 78, you should do this using the following steps:

<span>-5x - 25 = 78
</span>-5x - 25 + 25 = 78 + 25
-5x + 0 = 103
-5x = 103 /(-5)
x = 103 / (-5)
x = - 103/5 = - 20.6

The error was already made at step 1.

7 0

3 years ago

Read 2 more answers

72 apartments on 12 floors = apartments on 6 floors

Andreyy89

Step-by-step explanation:

36 apartamentos en total

8 0

3 years ago

Prove this trigonometric equation;<br><br> - tan^2x + sec^2x = 1,

alekssr [168]

Hey there :)

- tan²x + sec²x = 1 or 1 + tan²x = sec²x

sin²x + cos²x = 1
Divide the whole by cos²x

$\frac{sin^2x}{cos^2x} + \frac{cos^2x}{cos^2x} = \frac{1}{cos^2x}$

$\frac{sinx}{cosx} = tanx$ so $\frac{sin^2x}{cos^2x} = tan^2x$
and
$\frac{1}{cosx} = secx$ so $\frac{1}{cos^2x} = sec^2x$

Therefore,
tan²x + 1 = sec²x
Take tan²x to the other side {You will have the same answer}

1 = - tan²x = sec²x or sec²x - tanx = 1

3 0

3 years ago

Solve and graph the inequality 2|x-4|+3<15 on a number line

torisob [31]

Answer: 2< x < 10, closed circle at 2 and 10, line inbetween them

Step-by-step explanation:

4 0

2 years ago