All the total length of his drive, x.
Thus 4/5 of x is the 20 miles he has driven, or
(4/5)x = 20
Now divide both sides by 4/5 (which is multiplying by 5/4) and get
x = 25 miles
Answer:
Option B: 4
Step-by-step explanation:
From the image, the correct function is;
f(x) = x³ -5x² - 8x + 48
Now, the x-intercept occurs when y = 0.
Thus;
x³ - 5x² - 8x + 48 = 0
So we are looking for values of x that will make y = 0.
Let's try the options;
Let's try x = -4;
(-4)³ - 5(-4)² - 8(-4) + 48 = -64 - 80 + 32 + 48 = -64 ≠ 0
So, x = -4 is not an x - intercept
Let's try x = 4;
(4)³ - 5(4)² - 8(4) + 48 = 64 - 80 - 32 + 48 = 0
So,x = 4 is an x-intercept
Let's try x = - 2;
(-2)³ - 5(-2)² - 8(-2) + 48 = -8 - 20 + 16 + 48 = 36 ≠ 0.
So, x = -2 is not an x-intercept.
Let's try x = 2;
(2)³ - 5(2)² - 8(2) + 48 = 8 - 20 - 16 + 48 = 20 ≠ 0
So, x = 2 is not an x-intercept
Answer:
Step-by-step explanation:
Answer: 18 cm2
Step-by-step explanation: the surface area of the cube is 54 cm2 and the rectangular prism is 72 cm2 so 72 - 54 = 18
Answer: Anna eats 1/8 of pie
<u>Step-by-step explanation:</u> Let total pie =1
Mollie eats 1/4 of pie
Brandon eats half the amount of pie that Mollie eats i.e 1/2 of (1/4)
⇒1/8
Yuki eats 4 times as much as pie as Brandon i.e 4*(1/8)
⇒1/2
Total pie eaten by Mollie +Brandon+Yuki = 1/4+1/8+1/2
⇒7/8
Therefore Anna eats (1-7/8)
⇒ 1/8 of pie