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Anvisha [2.4K]
3 years ago
6

Which best proves why the expressions 4(x+3)+2x and 6(x+2) must be equivalent expessions

Mathematics
1 answer:
Vilka [71]3 years ago
3 0

Answer:

Step-by-step explanation:

4(x+3)+2x= 4x+12

4x+12+2x= 6x+12

and the second is

6(x+2)=

6x+12

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SCIENTIFIC NOTATION 8TH GRADE MATH KA- CORRECT ANSWERS ONLY PLS :)))) have a great day folks
VARVARA [1.3K]

Answer:

4.82*10^{-4}

Step-by-step explanation:

0.000082 + 0.0004 = 0.000482 = 4.82*10^{-4}

6 0
2 years ago
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A multiple-choice standard test contains total of 25 questions, each with four answers. Assume that a student just guesses on ea
weqwewe [10]

Answer:

a)  8*88*10⁻⁶ ( 0.00088 %)

b) 0.2137 (21.37%)

Step-by-step explanation:

if the test contains 25 questions and each questions is independent of the others, then the random variable X= answer "x" questions correctly , has a binomial probability distribution. Then

P(X=x)= n!/((n-x)!*x!)*p^x*(1-p)^(n-x)

where

n= total number of questions= 25

p= probability of getting a question right = 1/4

then

a) P(x=n) = p^n = (1/4)²⁵ = 8*88*10⁻⁶ ( 0.00088 %)

b) P(x<5)= F(5)

where F(x) is the cumulative binomial probability distribution- Then from tables

P(x<5)= F(5)= 0.2137 (21.37%)

7 0
3 years ago
Question 101 3.1 What is the constant difference between the consecutive terms? &lt; 612,18.24 e 7.14.21.28​
rewona [7]

Answer:

The constant between two consecutive terms is called the common difference. The common difference is the number added to any one term of an arithmetic sequence that generates the subsequent term.

6 0
3 years ago
Can someone help me :(
White raven [17]

Answer:

19 ft.

Step-by-step explanation:

Pytahgorean theorm. A^2 + B ^2 = C^2

49 + 100 = 149

Square root the 149, which is ~12

That means the hypotenuse is twelve feet, and with the base of the pole being seven, the pole was originally 19 feet tall.

4 0
3 years ago
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fredd [130]

Answer:

Using the slope-intercept form, the slope is 3 .

Step-by-step explanation:

6 0
3 years ago
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