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larisa86 [58]
3 years ago
7

Evaluate 9x^2y^-2 for x = -3 and y = 2. 324 20 1/4 9(-6)° 1/144

Mathematics
1 answer:
enyata [817]3 years ago
8 0

9514 1404 393

Answer:

  (b)  20 1/4

Step-by-step explanation:

9(-3)^2(2^-2) = 9(9)(1/4) = 81/4 = 20 1/4

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PLEASE HELP ASAP. 6th grade. 20 POINTS PLEASE HELP!!!!!!<br><br> Answers: -1,-2, -1/2, 2.
Murrr4er [49]

Answer:

The slope is -2.

Step-by-step explanation:

Slope formula:

\displaystyle \frac{y_2-y_1}{x_2-x_1}

y_2=1\\\\y_1=3\\\\x_2=1\\\\x_1=0\\

\displaystyle\frac{1-3}{1-0}=\frac{-2}{1}=-2

Therefore, the slope is -2, and the correct answer is -2.

Hope this helps!

8 0
3 years ago
Read 2 more answers
In the figure below, what is the area of triangle ABC?
Serhud [2]
The area of a triangle is base * height / 2

The length of the base is 16 - 12 = 4

The height is 31 - 0 =0

Then the area is 4*31/2 = 62
5 0
3 years ago
Find the value of the length x rounded to 1 DP.
ivanzaharov [21]

Answer:

x = 13.6 cm

Step-by-step explanation:

part A:

using tan rule:

tan(x) = \frac{opposite}{adjacent}

tan(39) = \frac{6}{adjacent}

adjacent = \frac{6}{tan(39)}

adjacent = 7.41

part B:

using tan rule:

tan(x) = \frac{opposite}{adjacent}

tan(44) = \frac{6}{adjacent}

adjacent = 6.213

Total length of x:

part A + part B

7.41 + 6.213

13.6 cm

6 0
2 years ago
Read 2 more answers
Which of the following is the solution to 7√22 + 3√7
Olegator [25]

The value of this irrational Expression is 40.77 .

<h3>What is an Expression ?</h3>

An expression is a mathematical statement consisting of variables , constants and mathematical operators.

The expression given is

7√22 +3√7

√22 = 4.69

√7 = 2.65

32.83 + 7.94

40.77

The value of this irrational Expression is 40.77 .

To know more about Expression

brainly.com/question/14083225

#SPJ1

5 0
2 years ago
Daniel and Audrey are reading the same book. At the beginning of the month, Daniel was on page 49 and Audrey was on page 22. Dan
dolphi86 [110]

Answer:

202

Step-by-step explanation:

So it has to end in 2 because 20t+22 will always be a 2.

day1:

17x1+49=66

no 2

day2:

17x2+49=83

odd

day3:

D=100

no 2

day4:

odd

day5:

D=134

no 2

etc

keep adding 17 to D until you get one that ends in 2

D=202

A=202

6 0
3 years ago
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