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Lady bird [3.3K]
3 years ago
6

Simplify the expression 21b4 − 3b by combining like terms.

Mathematics
1 answer:
mrs_skeptik [129]3 years ago
4 0
I think the answer is number 3
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3x + 18.45 = 1850.00
elixir [45]

Answer:

\frac{1831.55}{3}

Step-by-step explanation:

  1. Subtract 18.45 from each side: 3x = 1831.55
  2. Divide each side by 3 to cancel out the 3 next to x. It should now look like this: x = \frac{1831.55}{3}  

I hope this helps!

6 0
4 years ago
8. Jay drove 180 miles in 3 hours. Max drove 244 miles in 4 hours. Which of the following is true? (Show your
lyudmila [28]
The answer is B. Max drove faster than Jay.

180/3= 60
Jay drives 60 miles per hour

244/4= 61
Max drives 61 miles per hour
3 0
3 years ago
Milk is delivered to a chain of regional supermarkets once a week. If the weekly volume of sales in thousands of gallons is a ra
sleet_krkn [62]

Answer:

The chain of supermarkets must order 428.1 gallons of milk.

Step-by-step explanation:

Let's define the random variable X.

X : ''Weekly volume of sales in thousands of gallons''

X is a continuous random variable.

The probability density function for X is

f(x)=7(1-x)^{6} when 0 < x < 1

f(x)=0   Otherwise.

Let's denote as ''a'' to the quantity of milk for the question.

We are looking for :

P(X>a)=0.02

P(X>a)=\int\limits^1_a {f(x)} \, dx

P(X>a)=\int\limits^1_a {7(1-x)^{6}} \, dx

P(X>a)=(1-a)^{7}

(1-a)^{7}=0.02

a=1-\sqrt[7]{0.02}

a=0.4281

a is in thousands of gallons, therefore the chain of supermarkets must order  

428.1 gallons of milk in order to satisfy the question.

7 0
3 years ago
The volume of a cone is 3.x cubic units and its height is x units.
Vika [28.1K]

Answer:

Radius of the cone's base is 3x ....

Step-by-step explanation:

We have given that the volume of a cone is 3πx³

Height = x units.

The volume of a cone of radius r and height h units is given by:

V= 1/3 π r² *h

Simply plug the values given in the question into the above mentioned equation:

1/3πr²*x = 3*π*x³

1/3r²*x= 3x³

r² = 3*3*x³/x

r²=9x²

Taking square root at both sides we get:

√r² =√9x²

r = 3x

Thus the radius of the cone's base is 3x.

5 0
4 years ago
Read 2 more answers
Factor.
tekilochka [14]

Answer:

Answer is C

Step-by-step explanation:

(x + 6)(x + 2)

5 0
3 years ago
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