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skelet666 [1.2K]
2 years ago
5

You have to prove it!EVEN IF YOU KNOW ONE OF THEM PLZZZ HELPPP!:(.​

Mathematics
1 answer:
natita [175]2 years ago
7 0

Answer:

xi.) 1 = 1

xii.) 1 + 1 = 2

Step-by-step explanation:

see explanation in attached picture,

i hope it helped.

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The base of a triangle is 4 meters shorter than the height. What are the height and length of the triangle if its area is 48 squ
Sergeeva-Olga [200]

Answer: H=12 and B=8

Looking at the problem, you are given the area, <em>a</em> , and told the h is 4 meters longer than <em>b; </em>in other words, <em>h</em>=<em>b</em>+4.

Since <em>a=</em>1/2<em>bh</em>, you can replace <em>a</em> with 48. Also, since <em>h</em> is <em>b</em>+4, you can replace that as well. You'd end up with this equation:

48=1/2b(b+4)

1. Seeing that 48 is 1/2 of <em>b,</em> you know that you have twice the value of 48, or 96. So, you can put that 96=<em>b(b+4). </em>

2.<em> </em>Now, thinking through factors of 96-  1 x 96, 2 x 48, 3 x 32, 4 x 24, 6 x 16, or 8 x 12, the only pair in which <em>h </em>is b+4 is 12 x 8.

Hope this helps,

Lacia :))

8 0
2 years ago
The heights of american men aged 18 to 24 are approximately normally distributed with a mean of 68 inches and standard deviation
Rudik [331]
A normal distribution is symmetrical about the mean. Therefore half of all young men are shorter than 68 inches.
7 0
3 years ago
Read 2 more answers
The area of triangle LMN is 45 in². What is the area of the parallelogram LMNO? A.45 in² B. 90 in² C. 135 in² D.180 in²
krok68 [10]

Answer:its A.

Step-by-step explanation:

7 0
3 years ago
Find all values of x in the interval [0, 2π] that satisfy the equation. (Enter your answers as a comma-separated list.)
asambeis [7]

Answer:

(15°, 165°)

Step-by-step explanation:

Given the equation 6 sin2(x) = 3, we are to find the value of x that satisfies the equation in the interval  [0, 2π]

Given

6 sin2(x) = 3,

Divide both sides by 6

6 sin2(x)/6 = 3/6

sin2(x) = 1/2

2x = sin^-1(0.5)

2x = 30°

x = 30°/2

x = 15°

Since sin is positive in the second quadrant, x2 = 180-15

x = 165°

Hence the values within the interval are 15 and 165.

(15°, 165°)

7 0
2 years ago
The entrance fee to the national park is $15. The campsite fee is $25 per night.
lisabon 2012 [21]

Answer:

Step-by-step explanation:

a.) y = 25x + 15

b.) y is the total cost x is the amount of nights stayed 15 is the entrance fee and 25 is the cost per night

i.) x is the amount of nights stayed y is the total cost

ii.) slope (or m) is 25 y-intercept is 15

c.) plug in 3 for x

y = 25(3) + 15

y = 75 + 15

y = 90

its $90 for 3 nights

hope this helps <3

8 0
2 years ago
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