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mel-nik [20]
2 years ago
8

Plz help i need it quick!!! simplify

Mathematics
1 answer:
ale4655 [162]2 years ago
3 0

Answer:im not sure sorry

Step-by-step explanation:

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Find the dimensions of a rectangle whose width is 7 miles less than its length and whose areas is 78 square miles.
tatuchka [14]
W = L - 7
WL = 78

(L-7)L = 78

L^2 - 7L - 78 = 0
Factorize: (L-13)(L+6) = 0

L = 13 or -6

A length cannot be negative, so the length must be 13 miles.
The width is 13-7 = 6 miles.
8 0
3 years ago
Which angles are corresponding angles
a_sh-v [17]

Answer:

second option is correct onee

Step-by-step explanation:

mark me brainliest

8 0
2 years ago
With regard to mathematics, what is in excepted statement of fact that is used to prove other statements
ehidna [41]

Answer:

Axiom

Step-by-step explanation:

This is called a axiom. Not too sure if you mean the the definition but this is the definition.  Hope this helped c:

5 0
3 years ago
Pls help i am on a timer
stich3 [128]

Answer:

x = 1 + \sqrt{2} \ \ or \ 1- \sqrt{2}

Step-by-step explanation:

Given;

x² - 2x - 1 = 0

Solve by completing the square method;

⇒ take the constant to the right hand side of the equation.

x² - 2x = 1

⇒ take half of coefficient of x = ¹/₂ x -2 = -1

⇒ square half of coefficient of x and add it to the both sides of the equation

x^2 +  (-1)^2 = 1 + (-1)^2

(x-1)^2 = 1 + 1\\\\(x-1)^2 = 2\\\\

⇒ take the square root of both sides;

x-1 = +/- \ \ \sqrt{2} \\\\x = 1 + \sqrt{2} \ \ or \ 1- \sqrt{2}

Therefore, option B is the right solution.

3 0
2 years ago
Andrew and Kate have $30 to spend on dinner, tax, and gratuity at Mo’s Restaurant. Tax is 6%, and they will give a 15% tip on th
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<span>$21 times .06 = $1.26 in taxes and $21 times .15 = $3.15 in tip so you add $21+ 1.26 + 3.15 = $25.41

</span>
7 0
3 years ago
Read 2 more answers
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