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madam [21]
3 years ago
14

​​someone pls help meeeee!!!!!!​​

Mathematics
1 answer:
GuDViN [60]3 years ago
5 0

Step-by-step explanation:

y = y

x - 2 = 2x - 3 - 3x²

3x² + x - 2x = - 3 + 2

3x² - x = - 1

.

a = 3, b = -1, c = 0

.

\sf{x = \frac{-b \pm \sqrt{b^{2} - 4ac} }{2a} }

\sf{x = \frac{- (-1) \pm \sqrt{-1^{2} - 4 (0)} }{2(3)} }

\sf{x = \frac{ 1 \pm \sqrt{1 - 0} }{6} }

\sf{x = \frac{ 1 \pm \sqrt{1} }{6} }

\sf{x = \frac{ 1 + 1 }{6} }

\sf{x = \frac{ 2 }{6} }

\sf{x = \frac{ 1 }{3} }

.

Substitution :

y = x - 2

y = ⅓ - 2

y = ⅓ - 6/3

y = - 5/3

y = - 1 ⅔

.

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Find a ratio equivalent to 15/60
Flauer [41]

Answer:

\large\boxed{\dfrac{15}{60}=\dfrac{5}{20}=\dfrac{3}{12}=\dfrac{1}{4}}

or

\large\boxed{\dfrac{15}{60}=\dfrac{30}{120}=\dfrac{45}{180}=\dfrac{60}{240}}

Step-by-step explanation:

Divide the numerator and the denominator by the same number:

\dfrac{15}{60}\\\\=\dfrac{15:5}{60:5}=\dfrac{3}{12}\\\\=\dfrac{15:3}{60:3}=\dfrac{5}{20}\\\\=\dfrac{15:15}{60:15}=\dfrac{1}{4}\\\vdots

or

Multiply the numerator and the denominator by the same number:

\dfrac{15}{60}\\\\=\dfrac{15\cdot2}{60\cdot2}=\dfrac{30}{120}\\\\=\dfrac{15\cdot3}{60\cdot3}=\dfrac{45}{180}\\\\=\dfrac{15\cdot4}{60\cdot4}=\dfrac{60}{240}\\\vdots

7 0
3 years ago
Read 2 more answers
Tom and Susan park at different lots.
Alenkinab [10]

Answer:

Tom = 5

Susan = 3

Step-by-step explanation:

FROM THE BOXPLOT :

Tom's IQR :

IQR = Q3 - Q1

Q3 = third quartile (value at the endpoint of the box)

Q1 = 1st quartile (value at the beginning of the box)

IQR = 9 - 4

IQR = 5

SUSAN :

IQR = Q3 - Q1

Q3 = third quartile (value at the endpoint of the box)

Q1 = 1st quartile (value at the beginning of the box)

IQR = 8 - 5

IQR = 3

7 0
3 years ago
Why is the square root of 23 an irrational number​
Mrrafil [7]

Answer:

When simplified, the square root of 23 is a non-terminating and non-repeating decimal. This, and the fact that it can't be written as a fraction is why it is an irrational number.

8 0
4 years ago
Please help!!!! Will mark brainliest!! 18 points.
andreyandreev [35.5K]

Method 1:

You can use the formula of an area of equilateral triangle:

A=\dfrac{a^2\sqrt3}{4}

a - length of side

We have a = 10 yd. Substitute:

A=\dfrac{10^2\sqrt3}{4}=\dfrac{100\sqrt3}{4}=25\sqrt3\ yd^2\\\\\sqrt3\approx1.7\\\\A=25(1.7)=\boxed{42.5\ yd^2}


Method 2:

Use the Pythagorean theorem (look at he picture).

5^2+h^2=10^2

25+h^2=100           <em>subtract 25 from both sides</em>

h^2=75\to h=\sqrt{75}\\\\h=\sqrt{25\cdot3}\\\\h=\sqrt{25}\cdot\sqrt3\\\\h=5\sqrt3\ yd

The formula of an area of a trinagle:

A=\dfrac{1}{2}bh

b - base

h - height

We have b = 10 yd and h = 5√3 yd. Substitute:

A=\dfrac{1}{2}(10)(5\sqrt3)=(5)(5\sqrt3)=25\sqrt3\ yd\\\\\sqrt3\approx1.7\\\\A=25(1.7)=\boxed{42.5\ yd^2}

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