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nexus9112 [7]
3 years ago
6

Can someone please help me??

Mathematics
2 answers:
Anna [14]3 years ago
7 0

Answer:

1) D.

2) A

Step-by-step Explanation:

1) 7^{-2}

= (\frac{1}{7})^2

2) (\frac{2}{3})^{-3}

= (\frac{3}{2})^{3}

prisoha [69]3 years ago
5 0

Answer:

Step-by-step explanation:

a^{-m}=(\frac{1}{a})^{m}\\\\\\1)7^{-2}=(\frac{1}{7})^{2}\\\\\\2)(\frac{2}{3})^{-3}=(\frac{1}{\frac{2}{3}})^{3}\\\\=(\frac{3}{2})^{3}

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X/-4 + 14&gt;20<br><br> someone help a girl out
MrRa [10]

Answer:

x < -20

Step-by-step explanation:

x / -4  + 14 >20

Subtract 14 from each side

x / -4 +14-14 > 20 -14

x / -4 > 6

Multiply each side by -4, remembering to flip the inequality

x / -4 * -4 < 6 * -4

x < -20

7 0
3 years ago
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Simplify the expression<br><br> 3.2 - 5.6n - 4n + 8 =
mars1129 [50]

Answer:

maybe 11.2-9.6n...sorry if I get it wrong

Step-by-step explanation:

5 0
2 years ago
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5 is what percentage of 25? I’ll give brainliest:)
lord [1]

Hi there! :)

<h2>20%</h2><h2></h2>

To solve, we can simply divide and multiply by 100 to solve for the percentage:

5 / 25     = 5 ÷ 25 = 1/5 or 0.20

Multiply the decimal by 100 to solve for the percentage:

0.20 × 100 = 20%

3 0
3 years ago
How do you tell if the equation 2y=8 is linear; How do you graph it?
GarryVolchara [31]
Solve for y and then graph it on a graphing calculator or since it doesn’t have a exponent you know it’s just a line because it would be the like y=4 which is a horizontal line at 4
3 0
3 years ago
Match the key aspect of a function's graph with its meaning
Aliun [14]

Answer:

y- intercept --> Location on graph where input is zero

f(x) < 0         --> Intervals of the domain where the graph is below the x-axis

x- intercept --> Location on graph where output is zero

f(x) > 0         --> Intervals of the domain where the graph is above the x-axis

Step-by-step explanation:

Y-intercept: The y-intercept is equivalent to the point where x= 0. 'x' is the input variable in an equation, therefore the y-intercept is where the input, or x, is equal to 0.

f(x) <0: Notice the 'lesser than' sign. This means that the value of f(x), or 'y', is less than 0. This means that this area consists of intervals of the domain below the x-axis.

X-intercept: The x-intercept is the location of the graph where y= 0, or the output is equal to 0.

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8 0
3 years ago
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