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3 years ago

Pls help me

Mathematics

2 answers:

iris [78.8K]3 years ago

5 0

Check the circumference see if that helps

telo118 [61]3 years ago

4 0

Answer:

Step-by-step explanation: Area of circle is πr^2 so we plug in 12 for r since r is the diameter.

And we would get π(12)^2

π(144)=144π or 452.4

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The sum of two numbers is -20. The difference of the two numbers is -48. What are the two numbers?

Lostsunrise [7]

34 and -14 as proven here:

Sum: 34 + -14 = 20
Difference: 34 - -14 = 48

just the opposite (when it says negative it gonna be positive)

3 0

3 years ago

Hello, I do not anderstand this at all. I have been working on radicals and stuff, but this goes way above my head. Please help.

liraira [26]

Answer:

x = $\frac{5}{7}$

Step-by-step explanation:

We can start simplifying this equation by expanding the parenthesis and cross multiplying.

$(7^x)^4 = \frac{7^2 * 7^3}{7^{3x}} = \\\\\\7^{4x} = \frac{7^5}{7^{3x}}\\\\\\7^5 = 7^{7x}\\\\\\$

The exponent 5 and 7x are equal:

$\longmapsto$ Divide both sides by 7

$5 = 7x\\\\x = \frac57$

-Chetan K

6 0

3 years ago

Read 2 more answers

Câu 1: cho hình chóp S.ABC có đáy là tam giác đều cạnh bằng a, cạnh bên SB vuông góc với mặt phẳng (ABC) , SB =2a. Tính thể tích

Maurinko [17]

Answer:

$\frac{\sqrt{3}}{6} a^{3}$ và $\frac{a^{3} }{6}$

Step-by-step explanation:

Câu 1: V = 1/3.2a. $\frac{\sqrt{3}}{4}$ $a^{2}$ = $\frac{\sqrt{3}}{6} a^{3}$

câu 2: Theo đề bài ta có SA là chiều cao và tam giác đáy SBC vuông tại S (hình chóp S.ABC đổi thành chóp A.SBC)

=> V = 1/3 SA.(diện tích tam giác SBC) = 1/3a. $\frac{a^{2} }{2}$ = $\frac{a^{3} }{6}$

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3 years ago

Please sos I’m struggling <br> Statistics

Alex787 [66]

Answer:

Step-by-step explanation:

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4 years ago

Does a triangle with side lengths of 8m, 18m, and 10m form a Right triangle?

Rus_ich [418]

Answer:

Step-by-step explanation:

The two shorter lengths won't make a triangle of any kind.

They will simply form a straight line parallel to the base.

6 0

4 years ago