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2 years ago

What is the value of x? Enter your answer in the box. x =

Mathematics

1 answer:

Vitek1552 [10]2 years ago

4 0

Answer:

Step-by-step explanation:

<u>Equilateral Triangle</u>

Equilateral triangles are identified because they have all three sides of the same length and all three angles of the same measure.

The image shows a triangle with its three angles as congruent, thus it is an equilateral triangle.

Since we have two conditions and only one variable, we must be sure both conditions produce the same answer for x.

Equating two of the side lengths:

4x - 30 = 2x + 20

Subtracting 2x, and adding 30:

4x - 2x = 30 + 20

Operating:

2x = 50

x = 25.

Substituting x=25 in all the side lengths:

4x - 30 = 4*25 - 30 = 70

2x + 20 = 2*25 + 20 = 70

3x - 5 = 3*75 - 5 = 70

Once verified, it's sure that x=25

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fredd [130]

Answer:
$26.32

step-by-step explanation:
it originally was $40.00
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2 years ago

what is the equation, in slope- intercept form, of the line that contains the points (-3,4) and (5,7)

gavmur [86]

Answer:

y = $\frac{3}{8}$ x + $\frac{41}{8}$

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y-intercept )

To calculate the slope use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (- 3, 4) and (x₂, y₂ ) = (5, 7)

m = $\frac{7-4}{5+3}$ = $\frac{3}{8}$ , hence

y = $\frac{3}{8}$ x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

using (5, 7 ), then

7 = $\frac{15}{8}$ + c ⇒ c = 7 - $\frac{15}{8}$ = $\frac{41}{8}$

y = $\frac{3}{8}$ x + $\frac{41}{8}$ ← equation in slope-intercept form

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2 years ago

What is the volume of this?

m_a_m_a [10]

Hello there.

Answer: Work out the volume of both:
20 x 15 x 10 = 3000
3 x 3 x 3 = 27.
Subtract the inside part:
3000 - 27 = 2973.

Hope This Helps You!
Good Luck Studying ^-^

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2 years ago

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Answer:

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