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nexus9112 [7]
2 years ago
7

Solve by completing the square, please help​

Mathematics
1 answer:
Talja [164]2 years ago
6 0

Answer:

 x = 4 + √ 38

Step-by-step explanation:

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The cereal box shown below is a rectangular prism. Find the surface area of the cereal box.
SpyIntel [72]

Answer:

= 1700 :)

Step-by-step explanation:

-multiply all the sides,

-add them,

- then double the answer (or times it  by 2):

1) 30 times 20 = 600

30 times 5= 150

20 times 5 =100

2) Add them:

600+150+100 = 850

then times 850 by 2

850 times 2 = 1700

<em><u>Hope that helped :)</u></em>

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8 0
2 years ago
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Which equation represents the function on the graph?
Lyrx [107]
It’s C
you can plot each equation on a graphing website like geogebra or desmos !
7 0
2 years ago
Adult male heights are normally distributed with a mean of 70 inches and a standard deviation of 3 inches. The average basketbal
sweet-ann [11.9K]

Answer: First Option is correct.

Step-by-step explanation:

Since we have given that

Mean (\mu)= 70 inches

Standard deviation (\sigma)= 3 inches

Average basket ball player (\bar{X}) = 79 inches

Since it is normally distributed assume with 5% significance .

So, it becomes,

Z>\frac{\bar{X}-\mu}{\sigma}\\\\Z>\frac{79-70}{3}\\\\Z>\frac{9}{3}\\\\Z>3\\\\\therefore\ P(Z>3)=1-0.9987=0.0013

At 0.05 level of significance , 0.0013 = 0.13% of the adult male population is taller than the average basketball player .

Hence, First Option is correct.

5 0
3 years ago
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At noon, a hot-air balloon was at an elevation of 2,400 feet. One hour later it was at an elevation of 1,700 feet.
ASHA 777 [7]

Answer:

a.2,400-1700=

b. 700: the hot air balloon decreased height by 700 feet

4 0
2 years ago
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What system does it represent and what is the solution of this system
kicyunya [14]

We can see that the lines intersect at (-5,3) on the graph, so that eliminates choices B and D. Both A and C say that the first line is y=x+8, which is true. A says that the second line is y+x=-2, and after isolating y, we get y=-x+2, which seems correct. Do the same for C, and you will find that it says the other equation is y=x-2, which is not true because it must have a negative slope. So your answer will be choice A.

6 0
3 years ago
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