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Effectus [21]
3 years ago
10

Help me with this! i am confuseddddddd!!

Mathematics
1 answer:
Sonbull [250]3 years ago
7 0

Answer:

73.5 cm^{2}

Step-by-step explanation:

The shaded area is in the shape of a trapezoid, so to find the area all we have to do is use the formula

A = \frac{a + b}{2} h , where <em>h</em> is height, <em>a</em> is base 1, and <em>b</em> is base 2.

Plugging in the values, work on solving this equation:

A = \frac{(9) + (12)}{2}(7)

---------------Math Skip---------------------

We should be left with

A = \frac{21}{2}(7) = 10.5 (7) = 73.5 cm^{2}

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What is the domain and range of the function y equals square root of 4 x plus 12 end root?
nikdorinn [45]

Answer:

Step-by-step explanation:

The function written symbolically is

f(x) = y = √(4x + 12)

Domain:  Since 4x + 12 must be ≥ 0, x must be ≥ -3.  [0, -3)

Range:  The square root function may be zero or greater:  [0, infinity)

6 0
4 years ago
Solve the inequality: 6x - 36 <br> &gt;<br> -2x - 14
iren2701 [21]

Answer:

x > 11/4

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
At A Local Restaurant, The Health Inspector Visits Every 7 Days, And The Fire Inspector Visits Every 12 Days.
Xelga [282]
 PART A :OK so here is the table for the health inspector; all you are really doing is 7+7+7, and so on:

PART A: health inspector: 7,14,21,28,35,42,49,56,63,70,77,84..........

PART A:same thing for the fire inspector, except this time your adding 12+12+12, and so on:

PART A: fire inspector: 12,24,36,48,60,72,84,96.......

PART B: and to figure out what day they will both come is you have to find the LCM (least common multiple)

PART B: which in this case is Day 84

hopes this helps!!!!!



8 0
3 years ago
Find f(3) if f(n) = 3n.<br> 1/3<br> 01<br> 03
GaryK [48]

Answer:

this is correct beacuse of the four in the back of the number six

Step-by-step explanation:

6 0
3 years ago
A random sample of adult female reaction times has a sample mean of x¯=394.3 milliseconds and sample standard deviation of s=84.
s2008m [1.1K]

Answer:

99.7%

Step-by-step explanation:

Given that mean (μ) = 394.3 ms and standard deviation (σ) = 84.6 ms.

The empirical rule states that for a normal distribution:

  1. 68% falls within one standard deviation (μ ± σ)
  2. 95% falls within two standard deviation (μ ± 2σ)
  3. 99.7% falls within three standard deviation (μ ± 3σ)

one standard deviation = 394.3 ± 84.6 = (309.7, 478.9). 68% falls within 309.7 and 478.9 ms

two standard deviation = 394.3 ± 2 × 84.6 = (225.1, 563.5). 95% falls within 225.1 and 563.5 ms

three standard deviation = 394.3 ± 3 × 84.6 = (140.5, 648.1). 99.7% falls within 140.5 and 648.1 ms

8 0
3 years ago
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