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Serggg [28]
3 years ago
7

Please help me with this question.

Mathematics
1 answer:
Rasek [7]3 years ago
6 0
The answer is 4,000 ft squared because since the sides are 100 ft and 80ft then we need to multiply them which is 8,000 then divide that by 2 since it’s a triangle which is 4,000 ft squared.
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What is 1/3 + 1/2<br>*please help*
Tom [10]
\frac{1}{3}+\frac{1}{2}

Re-write with common denominator, in this case 6:

\frac{1 \times 2}{3 \times 2}+\frac{1 \times 3}{2 \times 3}

Add:
\frac{2}{6}+\frac{3}{6}=\frac{5}{6}
7 0
4 years ago
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What is the lower quartile of the following set? 28, 45, 12, 34, 36, 45, 19, 20 28.5 19.5 19 28
aleksandr82 [10.1K]
To find the lower quartile take the number of terms=n=12
to find the lower quartile take the equation (n+1)/4= 3.25
this means that the lower quartile will be at the 3.25th position int he sequence when all the terms are ordered from smallest to largest. so when ordered: 12  19  19  19.5  20  28  28   28.5   34   36   45   45
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5 0
3 years ago
Assume that the heights of boys in a high school basketball tournament are normally distributed, with mean 70 inches and standar
Annette [7]

Answer: 20

Step-by-step explanation:

We assume that the heights of boys in a high school basketball tournament are normally distributed.

Given : Mean height of boys : \mu=70 inches.

Standard deviation:  \sigma=2.5 inches.

Let x denotes the heights of boys in a high school basketball tournament .

Then the probability that a boy is taller than 70 inches will be :-

P(x> 70)=1-P(x\leq70)\\\\=1-P(\dfrac{x-\mu}{\sigma}\leq\dfrac{70-70}{2.5})\\\\=1-P(z\leq0)=1-0.5=0.5\ \ \text{[by using z-value table]}

Now, the expected number of boys in a group of 40 who are taller than 70 inches will be :-

40\times0.5=20

Hence, the expected number of boys in a group of 40 who are taller than 70 inches=20

6 0
3 years ago
Freddy bought 3 bags of pebbles to put in his fish tank. Each bag contains 295 pebbles. After he put the right amount of pebbles
vitfil [10]

295 x 3 = 885

885-104 = 781

781 pebbles

7 0
2 years ago
Simplify the equation: <br>7 (2+x)=
BabaBlast [244]
7(2+x)= 7×2=14 . 7× x =7x
7 0
3 years ago
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