3 years ago

Help me with thank u sm ❤️❤️

Mathematics

1 answer:

inn [45]3 years ago

6 0

-7 1/8 < -7 1/2 is the answer

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There are two non congruent triangles where B=55 degrees a=15 and b=13. Find the measures of the angles of the triangle with the

liq [111]

Answer:

The side c needs to be 12.85 for the triangle to have greatest perimeter

Step-by-step explanation:

We are given;

b = 13

a = 15

Angle at b: B = 55°

Let's find side c.

Using the law of cosines,we have;

b² = a² + c² - 2ac•cos(B)

13² = 15² + c² - 2•15•c•cos(55)

169 = 225 + c² - 30c•cos(55)

c² - 30c•cos(55) + 225 - 169 = 0

c² - 30c•cos(55) + 56 = 0

c² - 30c•(0.5736) + 56 = 0

c² - 17.208c + 56 = 0

Using quadratic formula;

c = [-(-17.208) ± √((-17.208)² - (4•1•56)]/2(1)

c = [17.208 ± √(296.115 - 224)]/2

c = 8.604 ± 4.246

To have the greater perimeter, we need the larger value of c, thus we will use the positive sign and ignore the negative one ;

Thus,

c = 8.604 + 4.246 = 12.85

5 0

3 years ago

The endpoints of the diameter of a circle are (-12, 7) and (3, 15). What is the length of the diameter?

seraphim [82]

Answer: 17

Step-by-step explanation:

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2 years ago

How to turn 3/9 in to a decimal ? no calculator

Lady_Fox [76]

3/9 reduces to 1/3 (divide both parts by the GCF 3)

Then use long division to divide 1/3

See attached of what I mean

Which is why $\frac{1}{3} \approx 0.3333$

The '3's in 0.333 will go on forever

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3 years ago

The sum of three consecutive multiples of 7 is 168 find the numbers

andrey2020 [161]

the three numbers are 49,56 and 63.

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3 years ago

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Three tenths of what number is 156?

tatiyna

Answer:

520

Step-by-step explanation:

If this answer helped you then please consider marking this as brainliest and like this respone :)

7 0

2 years ago

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