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Radda [10]
3 years ago
14

Please answer if you know !! i really need help on this one :(

Mathematics
1 answer:
Temka [501]3 years ago
8 0

Since we know that the measure of angle 3 is 72 we now also know that angle 2 equals 72 because they are congruent. So 72 + 72 = 144. 180 - 144 = 36. Meaning angle 1 equals 36 degrees.

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What is the unit rate for meters per second if a car travels 480 meters in 24 seconds?
Yanka [14]
20 meters per second
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3 years ago
You have a coupon for 10% off a dvd that cost 15$ if a tax of 8% is charged on the original amount what will you pay for the dvd
Tatiana [17]

Answer:

Should Be 14.58

Step-by-step explanation:

8 0
3 years ago
Identify all of the real roots of x^4 − x^3 − 9x^2 + 11x + 6 = 0.
Norma-Jean [14]

Answer:

4 roots: 2 , -3, 1+√2, 1 - √2

Step-by-step explanation:

x⁴ − x³ − 9x² + 11x + 6 = 0    leading: 1 (x⁴)    Trailing: 6 (1,2,3,6)

possible roots: trailing/leading (±1 , ±2, ±3, ±6)

Test: x = 2     (2)⁴ - (2)³ - 9*(2)² + 11*(2) + 6 = 0

        x = -3    (-3)⁴ - (-3)³ - 9*(-3)² + 11*(-3) + 6 = 0

By rational roots test: possible roots (x-2)(x+3) are factors

Long division:  (x⁴ − x³ − 9x² + 11x + 6) / (x-2)(x+3) = x²-2x-1

roots of x²-2x-1: x= (-b±√b²-4ac) / 2a

x = (2 ± √4+4) / 2 = (2 ± 2√2) / 2 = 1 ± √2

3 0
3 years ago
The head of public safety notices that the average driving speed at a particular intersection averages μ = 35 mph with a standar
tangare [24]
The answer is C because its the only one that makes sense when you see what the question is asking you
7 0
3 years ago
a sandwich at gabriel's deli is made up of 1/4 lb. of meat and 1/2lb. of bread toppings how much does a sandwich cost
azamat
3/4
2/4=1/2= 2x2=4 1x2=3
1/4 stays the same
2/4+1/4=3/4
prices?
6 0
3 years ago
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