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lyudmila [28]
3 years ago
13

Evaluate |-x – 2yl for x = -5 and y = 5.

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
5 0

Answer:

15

Step-by-step explanation:

| −5 −2(5)|

Since absolute value is positive that would be

5 + 10 = 15

Here's another way of looking at it:

| −5 − 10| Subtract 10 from -5

| −15| since absolute value is positive, the answer is 15

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15. The length of each edge of a regular tetrahedron,
grigory [225]

Slant height of tetrahedron is=6.53cm

Volume of the tetrahedron is=60.35\mathrm{cm}^{3}

Given:

Length of each edge a=8cm

To find:

Slant height and volume of the tetrahedron

<u>Step by Step Explanation: </u>

Solution;

Formula for calculating slant height is given as

Slant height=\sqrt{\frac{2}{3}} a

Where a= length of each edge

Slant height=\sqrt{\frac{2}{3}} \times 8

                     =\sqrt{0.6667} \times 8

                     =0.8165 \times 8=6.53cm

Similarly formula used for calculating volume is given as

Volume of the tetrahedron=\frac{a^{3}}{6 \sqrt{2}}

Substitute the value of a in above equation we get

Volume=\frac{8^{5}}{6 \sqrt{2}}

            =\frac{512}{6 \sqrt{2}}

            =\frac{512}{6 \times 1.414}

Volume=512 / 8.484=60.35\mathrm{cm}^{3}

Result:

Thus the slant height and volume of tetrahedron are 6.53cm and 60.35\mathrm{cm}^{3}

7 0
3 years ago
Round the number to the nearest thousand. 645,405
Aleksandr-060686 [28]

The answer is 645,000

5 0
3 years ago
Find the value of the coefficient of
Korolek [52]
The solution to the problem is as follows:
<span>
the genaral term is 5Cr(-1)^r 2^r x^(5-2r) 
and so need 5-2r = -1 => r = 3 
Coeff is then 5C3 (-1)^3 2^3 = -80
</span>
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
7 0
4 years ago
A bag has 30 towels numbered 1 to 30. What's the ratio for odds to evens?
8090 [49]
15:15

Which is simplified to
1:1

Hope this helps!
8 0
3 years ago
What is .4 as a fraction
Dmitriy789 [7]
2/5 is .4 as a fraction
7 0
2 years ago
Read 2 more answers
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