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3 years ago

What is 4x=8 proof reason

Mathematics

2 answers:

Triss [41]3 years ago

5 0

Answer:

x = 2

Step-by-step explanation:

divide both sides by 4
8÷4 = 2

Yuki888 [10]3 years ago

3 0

Answer:

x=2

Step-by-step explanation:

4x=8

/4 /4

divide both sides by 4

x=2

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PLEASE HELP Complete the table by computing the amount in the account at the end of each period.

skad [1K]

Answer:

See below

Step-by-step explanation:

Initial Principal P₀ = 1000
End of first period = 1000 + 1000*0.02/4 = 1005
End of second period = 1005 + 1000*0.02/4 = 1010
End of third period = 1010 + 1000*0.02/4 = 1015
End of fourth period = 1015 + 1000*0.02/4 = 1020

8 0

3 years ago

81(p+q)^2-9p-9q Factor this

polet [3.4K]

Answer:

9(p + q)(9p + 9q - 1)

Step-by-step explanation:

Given

81(p + q)² - 9p - 9q ← factor out - 9 from these 2 terms

= 81(p + q)² - 9(p + q) ← factor out 9(p + q) from each term

= 9(p + q)(9(p + q) - 1)

= 9(p + q)(9p + 9q - 1)

8 0

3 years ago

Read 2 more answers

Write an equation of the line that passes through the given point and is (a) parallel and (b) perpendicular to the given line.

inessss [21]

Answer:

(a). y = 3x - 11 ; (b). y = $-\frac{1}{3}$ x - 1

Step-by-step explanation:

Parallel lines have the same slopes

Slopes of perpendicular lines are opposite reciprocals.

(3, - 2)

The slope of given line is 3

(a). Equation of ║ line is

y + 2 = 3(x - 3)

y = 3x - 11

(b). Slope of perpendicular line is $-\frac{1}{3}$

y + 2 = $-\frac{1}{3}$ (x - 3)

y =  $-\frac{1}{3}$  x - 1

5 0

3 years ago

Read 2 more answers

The London theater offers child tickets at 10$each and adult tickets at 20$ each.Mrs burham buys 34 tickets at a total cost of 5

kirill115 [55]

Answer:

A+C=34

10C+20A=570

4 0

3 years ago

In a certain city of several million people, 7.7% of the adults are unemployed. If a random sample of 300 adults in this city is

Lilit [14]

Answer: 0.2643

Step-by-step explanation:

Given : The proportion of adults are unemployed : p=0.077

The sample size = 300

By suing normal approximation to the binomial , we have

$\mu=np=300\times0.077=23.1$

$\sigma=\sqrt{np(1-p)}=\sqrt{300\times0.077(1-0.077)}\\\\=4.61749932323\approx4.62$

Now, using formula $z=\dfrac{x-\mu}{\sigma}$ , the z-value corresponding to 26 will be :-

$z=\dfrac{26-23.1}{4.62}\approx0.63$

Using standard distribution table for z , we have

P-value= $P(z\geq0.63)=1-P(z$

$=1-0.7356527=0.2643473\approx0.2643$

Hence, the probability that at least 26 in the sample are unemployed =0.2643

6 0

3 years ago