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1 year ago

May you guys please help me on this one

Mathematics

1 answer:

NNADVOKAT [17]1 year ago

5 0

Answer:

y maximum is at 1 for both the points (4,1) and (-4,1)

Step-by-step explanation:

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10. A cube has surface area 6534 square feet.<br> What is its volume?

skelet666 [1.2K]

Answer:

Step-by-step explanation:

$6a^{2}=6534\\\\a^{2}=\frac{6534}{6}\\=1089\\\\a=\sqrt{1089}\\\\ a=33ft\\\\volume=a^{3}\\\\=33*33*33\\\\=35937$

4 0

3 years ago

What’s this equation? 50 + 6x + 1 – 22x

Serga [27]

In simplified form, the answer would be -16x+51

6 0

2 years ago

At a certain time of the day, a tree that is x meters tall casts a shadow that is x-49 meters long. If the distance from the top

nikklg [1K]

The height of the tree is 60 meters.

Explanation:

Let the height of the tree be x. The tree casts a shadow of $x-49$ meters and the distance from the top of the tree to the end of the shadow is $x+1$ meters.

The sides of the triangle are attached in the image below:

Using pythagoras theorem,

$x^{2}+(x-49)^{2}=(x+1)^{2}$

Expanding, we get,

$2 x^{2}-98 x+2401=x^{2}+2 x+1$

$2 x^{2}-98 x+2400=x^{2}+2 x$

$2 x^{2}-100 x+2400=x^{2}$

$x^{2}-100 x+2400=0$

Solving the equation using the quadratic formula $x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$ , we get,

$x=\frac{-(-100)\pm\sqrt{(-100)^{2}-4 \cdot 1 \cdot 2400}}{2 \cdot 1}$

Simplifying, we have,

$x=\frac{100\pm\sqrt{10000-9600}}{2}$

$x=\frac{100\pm\sqrt{400}}{2}$

$x=\frac{100\pm{20}}{2}$

Thus,

$x=\frac{100+20}{2} \\x=\frac{120}{2} \\x=60$ and $x=\frac{100-20}{2} \\x=\frac{80}{2} \\x=40$

where the value $x=40$ is not possible because substituting the value $x=40$ in $x-49$ results in negative solution. Which is not possible.

Hence, the value of x is 60.

Thus, The height of the tree is 60 meters.

7 0

2 years ago

I need help on this question and this time I took a picture

wolverine [178]

Answer:

you forgot to attach it lol

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Solve the equation 5(x + 2) = 6x + 3x − 14, and show your work

skelet666 [1.2K]

open the brackets

5x+10

5x+10=6x+3x-14

10+14=6x+3x-5x

24=9x-5x

24=4x

24 divided by 4=6

so x=6

6 0

3 years ago