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2 years ago

Pls pls pls help meee plssss

Mathematics

1 answer:

umka21 [38]2 years ago

6 0

Answer:

x = 5 or 1

Step-by-step explanation:

Square both sides to get

x^2 - 6x + 9 = 4 now subtract four from both sides

x^2 -6x+5 = 0 now factor ( or use quadratic formula)

(x-5)(x-1) = 0 so x = 5 or 1

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Two lines that are skew can be parallel

sveticcg [70]

Answer: skew lines are two lines that do not intersect and are not parallel

Step-by-step explanation:

3 0

3 years ago

A supplier delivers an order for 20 electric toothbrushes to a store. By accident, three of the electric toothbrushes are defect

krek1111 [17]

Answer:

The probability that the first two electric toothbrushes sold are defective is 0.016.

Step-by-step explanation:

The probability of an event, say E occurring is:

$P (E)=\frac{n(E)}{N}$

Here,

n (E) = favorable outcomes

N = total number of outcomes

Let X = number of defective electric toothbrushes sold.

The number of electric toothbrushes that were delivered to a store is, n = 20.

Number of defective electric toothbrushes is, x = 3.

The number of ways to select two toothbrushes to sell from the 20 toothbrushes is:

${20\choose 2}=\frac{20!}{2!(20-2)!}=\frac{20!}{2!\times 18!}=\frac{20\times 19\times 18!}{2!\times 18!}=190$

The number of ways to select two defective toothbrushes to sell from the 3 defective toothbrushes is:

${3\choose 2}=\frac{3!}{2!(3-2)!}=\frac{3!}{2!\times 1!}=3$

Compute the probability that the first two electric toothbrushes sold are defective as follows:

P (Selling 2 defective toothbrushes) = Favorable outcomes ÷ Total no. of outcomes

$=\frac{3}{190}\\$

$=0.01579\\\approx0.016$

Thus, the probability that the first two electric toothbrushes sold are defective is 0.016.

8 0

3 years ago

LoneWolves or anyone plz help me with this math question! I promise I'll mark u brainliest for the absolute right ANSWER

jeyben [28]

Answer:

8 ft^2

Step-by-step explanation:

$\frac{h1}{2ft} =\frac{h2}{3ft} \\\\$

area of ABC is:

$A= \frac{(3ft)(h2)}{2}$

area of ABC is 18 square ft, then

$h2 = \frac{(area)(2)}{3ft} = \frac{(18 ft^2)(2)}{3ft} =12ft$

now you can find h1 and the area for EFG

6 0

3 years ago

Read 2 more answers

In 6^3 what is the 3 called?

Musya8 [376]

Answer:

its an exponent

Step-by-step explanation:

6 0

3 years ago

Write two equivalent fractions for 5/10

shtirl [24]

1/2 and 10/20

to get 1/2 you have to divide 5/10 by 5:

5 / 5 1
----- = -----
10 / 5 2

to get 10/20 you have to multiply 5/10 by 2:

5 * 2 10
----- = ----
10 * 2 20

Hope it helps! =)

7 0

3 years ago

Read 2 more answers