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STALIN [3.7K]
3 years ago
12

Evaluate x+x+x+2x for x=2

Mathematics
2 answers:
Marat540 [252]3 years ago
5 0

Answer:

10

Step-by-step explanation:

Okay, let's substitute all values for x as two.

(2) + (2) + (2) + 2(2) = ?

We get 6 + 4 = ?

6 + 4 = 10

Nutka1998 [239]3 years ago
4 0

Answer:

10

Step-by-step explanation: substitute 2 for all the x’s and add.

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Use the equation, 16^2x=32^(x+3), to complete the following problems.
olga55 [171]

Answer:

x = 5

Step-by-step explanation:

2⁴(2x) = 2⁵(x + 3)

2^8× = 2^5x + 15

cancel out the 2

8x = 5x + 15

8x - 5x = 15

3x = 15

divide through by 3

x = 5

8 0
3 years ago
Astronomers treat the number of stars in a given volume of space as a Poisson random variable. The density in the Milky Way Gala
umka21 [38]

Answer:

a) 0.264

b) 48 cubit light-years

Step-by-step explanation:

For calculating a)  What is the probability of 3 or more stars in 16 cubic light years?

a)

λ= 1 star/16 cubic light-years

t= measure t in units of 16 cubic light years.

E(Y) = λ t = (1/16)(16) = 1 star

P(X>=2) = 1 - P(X<2)

= 1 - [e^-1 + (e^-1)(1)/1!]

= 0.264

b)

P(X≥1) = 1 - P(X=0)

= 1 - e^-μ

0.95 = 1 - e^-μ

e^-μ = 1 - 0.95

e^-μ = 0.05

ln(e^-μ) = ln(0.05)

-μ = -3

μ = 3

Therefore  3 x 16 = 48 cubic light years of space

4 0
3 years ago
Plz help ill give u brainlist
Travka [436]

The surface area of the box will be 112 in²

Explanation

According to the given diagram, the shape of the box is Right Rectangular prism.

The formula for the surface area is :

A= 2(w*l+h*l+h*w) , where l= length, w= width and h= height of the rectangular prism

Given in the diagram that, l= 8, w=4 , h=2

So, plugging the values into the formula...

A= 2(4*8+2*8+2*4)\\ \\ A= 2(32+16+8)\\ \\ A=2(56)\\ \\ A=112

So, the surface area of the box is 112 in²

3 0
3 years ago
Suppose you need some fast cash until payday which is two weeks away. You decide to take out a payday loan for $400 with a fee o
MA_775_DIABLO [31]

The  APR on the loan will be $13. The APR is found by the standard formula. It is calculated annually.

<h3>What is APR? </h3>

APR is an annualized cost indication for a loan that includes all costs.

Suppose there is an initial amount as P. The interest, or say charge on it, is applied annually as 'C' amount.

The given data in the problem is;

Loan payment = $400

Fees  = $52

APR=?

The value of the APR is found as;

APR = \dfrac{C}{P} \times 100 \\\\\ APR = \dfrac{52}{400} \times 100 \\\\\ APR = \$ \ 13

Hence, the  APR on the loan will be $13.

To learn more about the APR, refer to the link;

brainly.com/question/1361627

#SPJ1

8 0
2 years ago
2:1<br> and <br> 18:9<br> equivalent?
denis23 [38]
Yes they are equivalent 18:9 simplified by 9 is 2:1
8 0
3 years ago
Read 2 more answers
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