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3 years ago

2/5 x - 5 = 2/3 help pleasee

Mathematics

2 answers:

sergeinik [125]3 years ago

6 0

6/85 I think I hope this this helps

salantis [7]3 years ago

4 0

Answer:

exact form is x=85/6

decimal form is x=14.16 repeating

mixed number is x=14 1/6

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What is the value of z in the equation 3z + 5 = 4z -8

Komok [63]

Answer:

Step-by-step explanation:

3z + 5 = 4z - 8

⇌ 5 + 8 = 4z - 3z

⇌ 13 = z

8 0

3 years ago

Read 2 more answers

If 20 is added to a certain number and the sum is divided by 5, the result is 1 more than 1/2 of the original number. Find the o

OlgaM077 [116]

First, we translate the information that the question gives us:20+x is "twenty added to a certain number"(20+x)/5 is "the sum divided by five"1+12x is "one more than twelve times the original number"Putting it all together, we get the following equation:(x+20)/5 = 1 + 12xSolve for x:x+20=5(1+12x)x+20=5+60x20-5=60x-x15=59x15/59 = xTherefore, the original number was 15/59

4 0

3 years ago

Please help i put 15 points for this

PilotLPTM [1.2K]

Answer:

Options 3, 4 and 5

Step-by-step explanation:

Given:

F(x) = x³ + 3x² - 25x - 75

Factor the given function:

F(x) = x³ + 3x² - 25x - 75

⇒ take x² a common from (x³ + 3x²) and (-25) a common from (- 25x - 75)

F(x) = x²(x+3) - 25 (x+3)

⇒ take (x+3) as a common

F(x) = (x+3) (x² - 25)

(x² - 25) = (x-5) (x+5)

∴ F(x) = (x+3) (x-5) (x+5)

The answer are options 3, 4 and 5

7 0

4 years ago

The surface area for a rectangular prism with a square base is SA=2s2+4sh. What is the surface area if s=3 and h=5?

Zigmanuir [339]

Answer:

The surface area is 78 unit square.

Step-by-step explanation:

Given : The surface area for a rectangular prism with a square base is $SA=2s^2+4sh$ .

To find : What is the surface area if s=3 and h=5?

Solution :

The surface area for a rectangular prism with a square base is $SA=2s^2+4sh$

Substitute, s=3 and h=5

$SA=2(3)^2+4(3)(5)$

$SA=2\times 9+4\times 15$

$SA=18+60$

$SA=78$

Therefore, The surface area is 78 unit square.

7 0

3 years ago

A true-false quiz with 10questions was given to a statistics class. Following is the probability distribution for the score of a

SSSSS [86.1K]

Using the mean formula and it's interpretation, it is found that:

1. The mean is 7.52.

2. If we were to give this quiz to more and more students, the mean score for these students would approach 7.52.

The mean of a discrete distribution is given by the sum of each outcome divided by it's respective probability.

Hence, in this problem, according to the distribution given, the mean is:

$E(X) = 5(0.06) + 6(0.12) + 7(0.33) + 8(0.29) + 9(0.13) + 10(0.07) = 7.52$

The mean is 7.52.

The interpretation is that over many trials, the mean would approach 7.52.

A similar problem is given at brainly.com/question/24855677

3 0

2 years ago