Answer:
Step-by-step explanation:
A six sided figure has a total of 720 degrees for its interior angles. That comes from the formula (n - 2) * 180 where n is 6.
4 * 180 = 730.
So add up what you know plus x and make it equal to 720.
112 + 133 + 128 + 100 + 120 + x = 720 Combine the left.
593 + x = 720 Subtract 593 from both sides.
x = 720 - 593
x = 127
Answer: (b) x = -7, x = 2, x = 4
<u>Step-by-step explanation:</u>
Remainder Theorem is used to determine if a given value is a root.
It is stated that (x + 7) is a root ⇒ x + 7 = 0 ⇒ x = -7
We can confirm this by plugging in x = -7 and getting a value of 0.
f(x) = 5x³ + 5x² - 170x + 280
f(-7) = 5(-7)³ + 5(-7)² - 170(-7) + 280
= -1715 + 245 + 1190 + 280
= 0
CONFIRMED that x = -7 is a zero!
Next, let's try x = 2
f(2) = 5(2)³ + 5(2)² - 170(2) + 280
= 40 + 20 - 340 + 280
= 0
CONFIRMED that x = 2 is a zero!
Lastly, let's try x = 4
f(4) = 5(4)³ + 5(4)² - 170(4) + 280
= 320 + 80 - 680 + 280
= 0
CONFIRMED that x = 4 is a zero!
Answer:
15
Step-by-step explanation:
40% of 25 is 10, you can find this by multiplying 10 by 2, you get 20 which is now 80% of 25.
Now divide 10 by 2, you get 5. 5 is 20%. Add them all together and you come to a clean 100%.
P.S
Have a Amazing Day!
<em><u>Faker/Tosrel</u></em>
Answer:
Show the whole pic
Step-by-step explanation:
You can represent this problem by using the multiplication problem 5x4