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3 years ago

X and y are supplementary angles. y measures 142. What is the measure of x?

Mathematics

1 answer:

Nimfa-mama [501]3 years ago

6 0

Answer:

38°

Step-by-step explanation:

y = 142°

x + y = 180°{ being supplementary angles }

x + 142° = 180°

x = 180° - 142°

x = 38°

Hope it will help :)

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Simplify the expression c+2+c+c+4

professor190 [17]

Answer:

2+4+ccc

Step-by-step explanation:

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2 years ago

A rectangular parking lot must have a perimeter of 440 feet and an area of at least 8000 square feet. Describe the possible leng

tangare [24]

Answer:

The possible parking lengths are 45.96 feet and 174.031 feet

Step-by-step explanation:

Let x be the length of rectangular plot and y be the breadth of rectangular plot

A rectangular parking lot must have a perimeter of 440 feet

Perimeter of rectangular plot =2(l+b)=2(x+y)=440

2(x+y)=440

x+y=220

y=220-x

We are also given that an area of at least 8000 square feet.

So, $xy \leq 8000$

So, $x(220-x) \leq 8000$

$220x-x^2 \leq 8000$

So, $220x-x^2 = 8000\\-x^2+220x-8000=0$

General quadratic equation : $ax^2+bx+c=0$

Formula : $x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}$

$x=\frac{-220 \pm \sqrt{220^2-4(-1)(-8000)}}{2(-1)}\\x=\frac{-220 + \sqrt{220^2-4(-1)(-8000)}}{2(-1)} , \frac{-220 - \sqrt{220^2-4(-1)(-8000)}}{2(-1)}\\x=45.96,174.031$

So, The possible parking lengths are 45.96 feet and 174.031 feet

3 0

3 years ago

Round 5049 correct to 1 significant figure

Step2247 [10]

5000

Addition (+) and subtraction (-) round by the least number of decimals.
Multiplication (* or ×) and division (/ or ÷) round by the least number of significant figures.
Logarithm (log, ln) uses the input's number of significant figures as the result's number of decimals.
Antilogarithm (n^x.y) uses the power's number of decimals (mantissa) as the result's number of significant figures.
Exponentiation (n^x) only rounds by the significant figures in the base.
To count trailing zeros, add a decimal point at the end (e.g. 1000.) or use scientific notation (e.g. 1.000 × 10^3 or 1.000e3).
Zeros have all their digits counted as significant (e.g. 0 = 1, 0.00 = 3).
Rounds when required, after parentheses, and on the final step.

- BRAINLIEST answerer ❤️

7 0

2 years ago

Read 2 more answers

Perfect Square Trinomials: 1. Give an example of a perfect square trinomial. 2. Explain why it is a perfect square trinomial. 3.

Ainat [17]

Answer:

1. $x^{2} -12x+36$ is a perfect square trinomial