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3 years ago

What is 7x5+9(2x9)2+3(8+6)5-=___?

Mathematics

2 answers:

just olya [345]3 years ago

8 0

7⋅5+9⋅(2⋅9)⋅2+3(8+6)⋅57⋅5+9⋅(2⋅9)⋅2+3(8+6)⋅5

35+9⋅18⋅2+3⋅14⋅535+9⋅18⋅2+3⋅14⋅5

35+324+21035+324+210

569

#jessica

Ne4ueva [31]3 years ago

6 0

Using order of operations, the answer is 569.

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GUYS PLEASE HELP, 1 MILLION POINTS!!!

Salsk061 [2.6K]

Answer:

True

Step-by-step explanation:

8 0

2 years ago

the ratio of peters money to henrys money is 4 : 3 there at first. after perter spent 12 dollars they had an equal amount of mon

MatroZZZ [7]

Using a system of equations, it is found that Peter had $48 at first.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the variables are:

Variable x: Peter's money.

Variable y: Henry's money.

The ratio of peters money to henrys money is 4 : 3, hence:

$\frac{x}{y} = \frac{4}{3}$

After Peter spent $12, they had the same amount, hence:

y = x - 12.

Then, replacing in the ratio:

$\frac{x}{y} = \frac{4}{3}$

$\frac{x}{x - 12} = \frac{4}{3}$

4(x - 12) = 3x

x = 48.

More can be learned about a system of equations at brainly.com/question/24342899

#SPJ1

4 0

2 years ago

I need help with this

kvv77 [185]

Answer:

<h2>hwvvejedbfbjxjjdjdbbsvsvhsjwwjjwkkwiiwjdjdbbdbxbbxje</h2>

Step-by-step explanation:

<h2>vshkeeheyeu4us d rvrgsjhdhfhxdbevdvdhjef zbfjfk</h2>

8 0

3 years ago

The third, fifth and eighth terms of an AP are the first 3 consecutive terms of a GP. Given that the first term of the AP is 8,

marshall27 [118]

Answer:

Common Difference = 2.

Step-by-step explanation:

An AP can be written as a1, a1 + d, a1 + 2d, a1 + 3d, a1 + 4d, a1 + 5d, a1 + 6d , a1 + 7d.

where a1 = first term and d is the common difference.

Here first term = a1 = 8

3rd term = a1 + 2d = 8 + 2d

5th term = a1 + 4d = 8 + 4d

8th term = 8 + 7d

First 3 terms of a GP are a , ar and ar^2

So from the given information:

a = 8 + 2d

ar = 8 + 4d

ar^2= 8 + 7d

Dividing the second equation by the first we have

r = (8 + 4d)/(8 + 2d)

Dividing the third by the second:

r = (8 + 7d) / (8 + 4d)

Therefore, eliminating r we have:

(8 + 4d)/(8 + 2d) = (8 + 7d)/(8 + 4d)

(8 + 4d)^2 = (8 + 2d)(8 + 7d)

64 + 64d + 16d^2 = 64 + 72d^ + 14d^2

2d^2 - 8d = 0

2d(d^2 - 4) = 0

2d = 0 or d^2 = 4, so

d = 0, 2.

The common difference can't be zero so it must be 2.

8 0

3 years ago

A bag contains 3 purple and 5 orange jelly-beans. If one jelly-bean is selected and is NOT replaced and a second jelly-bean is s

Elan Coil [88]

P(orange and then a purple) is 15/56.

P(two purples in a row) is 6/56.

Step-by-step explanation:

A bag contains 3 purple and 5 orange jelly-beans.
The total jelly-beans in the bag = 3 purple + 5 orange = 8 jelly-beans.

Without replacement, find P(orange and then a purple) :

P (orange) = No.of orange jelly-beans / total jelly-beans.

⇒ 5 / 8

P (purple) = No.of purple jelly-beans / remaining jelly-beans from the total

⇒ 3 / 7

P(orange and then a purple) = P (orange) × P (purple)

⇒ 5/8 × 3/7

⇒ 15/56

Without replacement, find P(two purples in a row) :

P (1st purple) = No.of purple jelly-beans / total jelly-beans.

⇒ 3 / 8

P (2nd purple) = remaining no.of purple jelly-beans / remaining jelly-beans from the total.

⇒ 2 / 7

P(two purples in a row) = P (1st purple) × P (2nd purple)

⇒ 3/8 × 2/7

⇒ 6/56

8 0

2 years ago