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3 years ago

The measures of the angles in triangle ABC are in the ratio of 3 : 7 : 8. Determine the measure of each angle.

Mathematics

1 answer:

sergiy2304 [10]3 years ago

4 0

Answer:

a:30 b:70 c:80

Step-by-step explanation:

triangle= 180*

3:7:8= 180*

7+3+8= 18

180/18= 10

a= 3x10= 30*

b=7x10= 70*

c=8x10= 80*

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Three cubes of the same metal, whose edges are 6, 8, 10 cm are meltedand formed into a single cube. Find the diagonal of the sin

allochka39001 [22]

Answer: 12√2 cm

Step-by-step explanation:

Cube 1: V = 6³ = 216

Cube 2: V = 8³ = 512

Cube 3: V = 10³ = 1000

New Cube: V = 1728

1728 = s³

12 = s

So, each side of the new cube is 12 cm.

Use Pythagorean Theorem to find the length of the diagonal:

12² + 12² = diagonal²

144 + 144 = diagonal²

288 = diagonal²

√288 = diagonal

12√2 = diagonal

3 0

3 years ago

Whats the sum of -7x*y + 4x^2 - 2 and 4x'y + 1 - 8x^y?

matrenka [14]

Answer:

-7xy+4x^2-8 and y+1-8x^y

Step-by-step explanation:

8 0

3 years ago

5√28+ √63 please simplify no exponents please

zaharov [31]

Answer:

34.3948

Step-by-step explanation:

$5\sqrt{28} +\sqrt{63} = 13\sqrt{7} = 34.3948$

3 0

3 years ago

Read 2 more answers

Nidah writes down two different prime numbers.

balu736 [363]

Answer:

2 and 3

Step-by-step explanation:

prime numbers=2,3,4,5,...

taking 2 and 3

2+3=5

5²=25

hence the different prime numbers are 2 and 3

5 0

2 years ago

Please help me compute standard deviation! Here is the problem, as written.

aleksandr82 [10.1K]

Answer:

The standard deviation for the income of super shoppers is 76.12.

Step-by-step explanation:

The formula to compute the standard deviation for the grouped data probability distribution is:

$\sigma=\sqrt{\sum [(x-\mu)^{2}\cdot P(x)]}$

Here,

x = midpoints

$\mu=\sum x\cdot P(x)$

Consider the Excel table attached below.

The mean is:

$\mu=\sum x\cdot P(x)=32.3$

Compute the standard deviation as follows:

$\sigma=\sqrt{\sum [(x-\mu)^{2}\cdot P(x)]}$

$=\sqrt{259.71}\\\\=76.1155204\\\\\approx 76.12$

Thus, the standard deviation for the income of super shoppers is 76.12.

3 0

3 years ago