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2 years ago

Find the measure of arc EC.

Mathematics

1 answer:

miss Akunina [59]2 years ago

8 0

Answer:

Step-by-step explanation:

$7x = (90 + 5x) \times \frac{1}{2}$

$7x = {2.5x} + 45$

$4.5x = 45$

$x = 10$

Plug 10 in for x.

$5(10) = 50$

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What is the measurement of BC to the nearest centimeter?

77julia77 [94]

Answer:

a 8

Step-by-step explanation:

You are given two sides and the included angle. Since you don't have any side and the opposite angle, you must use the law of cosines.

$a^2 = b^2 + c^2 - 2bc\cos A$

$a^2 = 5^2 + 11^2 - 2(5)(11)\cos 39^\circ$

$a^2 = 25 + 121 - 110\cos 39^\circ$

$a^2 = 60.51$

$a = 7.779$

Answer: a = 8 cm

7 0

3 years ago

Simplify 36x^4 42x^7

Alja [10]

The first step to simplify this equation is to multiply the numbers
1512 $x^{4}$ × $x^{7}$
next,, youll multiply the terms with the same base by adding their exponents
1512 $x^{4+7}$
finally,, youll add the numbers together
1512 $x^{11}$
since you cant simplify any further,, the correct answer to your question is 1512 $x^{11}$
let me know if you have any further questions
:)

4 0

3 years ago

Luigi is an urban planner. as an independent contractor, he charges $140 fee plus $ 25 per hour for each contract with the city.

yaroslaw [1]

x = hours 25 per hour = 25x

y = total

so y = 25x +140

6 0

3 years ago

Read 2 more answers

You lose an online auction for an autograph. Your losing bid of $28 is 40% of the winning bid. How much less was your bid than t

TEA [102]

Answer:

My bid was $42 less than the winning bid.

Step-by-step explanation:

The winning bid is x.

$28 is 40% of x

0.4x = 28

x = 28/0.4

x = 70

The winning bid was $70.

$70 - $28 = $42

Answer: My bid was $42 less than the winning bid.

5 0

2 years ago

PLEASE HELP ITS ABOUT TO BE DUE

Jlenok [28]

Answer:

x=-1

Step-by-step explanation:

4(x-3(-2))=6(x-3(-2)) => 4(x+6)=6(x+6) => 4x+24=6x+26 => -2=2x => x=-1

6 0

3 years ago