All categories

3 years ago

Identify intervals on which the function is increasing, decreasing, or constant.

Mathematics

1 answer:

Alexeev081 [22]3 years ago

7 0

The answer is A) Increasing: x < 7; decreasing: x > 7

You might be interested in

Can anyone help me with 49 and 50 thank you

Veseljchak [2.6K]

Answer:

see explanation

Step-by-step explanation:

Using the rule of exponents

$a^{m}$ × $a^{n}$ ⇔ $a^{(m+n)}$

3b × 4b³ = (3 × 4) × $b^{(1+3)}$ = 12 $b^{4}$

5x² × 8x × 5x³

= (5 × 8 × 5) × $x^{(2+1+3)}$ = 200 $x^{6}$

3 0

3 years ago

Elimination Method: 6x - 4y = -24 and 4x + 5y = -2

nirvana33 [79]

Answer:

$(-2;-6)$

Step-by-step explanation:

First of all, let's rewrite the first one after dividing both sides by 2.

$\left \{ {{3x-2y=-12\atop {4x+5y=-2}} \right.$

Now, let's pick one you want to eliminate.

Eliminating x: Let's multiply the first one by 4, the second by 3, and subtract one from the other. Rest is simply solving an equation in one variable

$4I-3II : 12x-8y-12x+15y = -48 - (-6)\\7y = -42 \rightarrow y= -6$

Eliminating y: Let's multiply the first by 5, the second by 2, and add them together. Rest is simply solving an equation in one variable

$5I+2II: 15x -10y +8x +10y = -60 +4\\23x = -56 \rightarrow x=-2$

4 0

2 years ago

zoe had a gross income of 37,300 in 2009 when filing her federal income tax returne she took the standard deduction of 5,700 cla

just olya [345]

Answer:The answer is 15%

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Mark and don are planning to sell each of their marble collections at a garage sale. if don has 2 more than 4 times the number o

Sonbull [250]

If the total number of marbles is 102, Mark has 20 marbles while Don has 82 marbles.

To answer this word problem, read and understand first the problem.

"Don has 2 more than 4 times the number of marbles Mark has."

Out of this statement, we can come up with the expression,

Don = 2 + (4 x Mark) (equation 1)

Next, the total number of marbles they have is 102.

Don + Mark = 102 (equation 2)

From this expression, if we subtract the number of marbles Mark has from the total number, we can get the number of marbles Don has.

Don = 102 - Mark (equation 3)

Equating the 1st and 3rd equation,

Don = 2 + (4 x Mark) = 102 - Mark

2 + (4 x Mark) = 102 - Mark

let x = Mark's

2 + (4x) = 102 - x

4x + x = 102 - 2

5x = 100

x = 20

Mark has 20 marbles.

Meanwhile, use either the 1st or 3rd equation to know the number of marbles Don has.

Don = 102 - Mark (equation 3)

Don = 102 - 20

Don = 82

For more examples of mathematical expressions to solve word problems:, brainly.com/question/13818690.

#SPJ4

7 0

2 years ago

You want to mix a 5% blue dye with a 20% blue dye to make a 12% blue dye. The function y =100(0.05)+x(0.2)/100+x gives the conce

Natalija [7]

Y = 12% = 0.12

y = 100(0.05) + x(0.2) / 100 + x
0.12 = 5 + 0.2x / 100 + x
0.12( 100 + x ) = 5 + 0.2x
12 + 0.12x = 5 + 0.2x
7 = 0.08x
x = 87.5

hope this help

6 0

3 years ago

Read 2 more answers