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3 years ago

Write 6x-7y=-84 in slope-intercept form

Mathematics

1 answer:

Anarel [89]3 years ago

8 0

6x-7y=-84
7y = 6x + 84
y = 6/7(x) + 12

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Two angles are complementary. One angle is 5 times as large as the other. What is the measure of each angle?

Fantom [35]

Answer:

15 and 75

Step-by-step explanation:

complementary - add up to 90 degrees

x+5x=90 degrees

6x=90 degrees

x=90/6

x=15

15*5=75

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3 years ago

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maksim [4K]

Answer:

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2 years ago

How many significant digits are in thus number 74.30

goblinko [34]

Answer:

Step-by-step explanation:

all numbers except from zero

that would mean 7 4 and 3

so there would be 3 significant figures

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3 years ago

The length of each side of an equilateral triangle is increased by 20%, resulting in triangle ABC. If the length of each side of

kompoz [17]

Answer: Area of ΔABC is 2.25x the area of ΔDEF.

Step-by-step explanation: Because equilateral triangle has 3 equal sides, area is calculated as

$A=\frac{\sqrt{3} }{4} a^{2}$

with a as side of the triangle.

Triangle ABC is 20% bigger than the original, which means its side (a₁) measures, compared to the original:

a₁ = 1.2a

Then, its area is

$A_{1}=\frac{\sqrt{3} }{4}(1.2a)^{2}$

$A_{1}=\frac{\sqrt{3} }{4}1.44a^{2}$

Triangle DEF is 20% smaller than the original, which means its side is:

a₂ = 0.8a

So, area is

$A_{2}=\frac{\sqrt{3} }{4} (0.8a)^{2}$

$A_{2}=\frac{\sqrt{3} }{4} 0.64a^{2}$

Now, comparing areas:

$\frac{A_{1}}{A_{2}}= (\frac{\sqrt{3}.1.44a^{2} }{4})(\frac{4}{\sqrt{3}.0.64a^{2} } )$

$\frac{A_{1}}{A_{2}} =$ 2.25

The area of ΔABC is 2.25x greater than the area of ΔDEF.

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3 years ago

If you have 3 sticks of length 2 cm, 3 cm and 5 cm. What kind of triangle these sticks would form? Justify your answer.

stepan [7]

Answer:

Scalene triangle (As the definition says)

3 0

3 years ago