All categories

3 years ago

(2/5 + 3/4) x [ 3 - (1/4 : 1/5)]

Mathematics

1 answer:

Volgvan3 years ago

6 0

Answer & Step-by-step explanation:

(2/5 + 3/4) * [ 3 - (1/4 : 1/5)]

When you see this sign, : , it usually means to divide the numbers because they represent some form of a ratio. So, we will divide 1/4 by 1/5.

First, do all of the operations in the parentheses ().

(2/5 + 3/4)*[ 3 - (1/4 : 1/5)]

(23/20) * [ 3 - (5/4)]

(23/20) * (7/4)

Now, we multiply 23/20 by 7/4.

(23/20) * (7/4)

161/80

This number can not be simplified so we will keep it as it is.

So, the answer to this expression is 161/80

You might be interested in

Anyone alive I need this answer

Juliette [100K]

503 lol I’m alive kid

5 0

3 years ago

Consider the two exponential equations shown. Identify the attributes for each equation to complete the table.

SIZIF [17.4K]

Answer:

$y = 2 5 0 ( 0 . 8 9 ) ^ x$

Initial value: 250

Decay

Decay rate: 11%

$y = 4 0 ( 1.11 ) ^ x$

Initial value: 40

Growth

Growth rate: 11%

Step-by-step explanation:

The function we have on the left of the table is:

$y = 2 5 0 ( 0 . 8 9 ) ^ x$

Initial value (when x = 0): $y = 2 5 0 ( 0 . 8 9 ) ^ 0$

y = 250 (initial value)

Growth or Decay: 0.89 < 1 so decay

Decay rate: (1 - 0.89) * 100 = 11%

Function on right side:

$y = 4 0 ( 1.11 ) ^ x$

Initial value (when x = 0): $y = 4 0 ( 1 . 1 1 ) ^ 0$

y = 40 (initial value)

Growth or decay: 1.11 > 1 so growth

Growth rate: (1.11 - 1) * 100 = 11%

8 0

3 years ago

Read 2 more answers

Hey y’all can y’all plz help me for brainliest

puteri [66]

Answer:

Step-by-step explanation:

6 0

2 years ago

A 100-point test contains a total of 20 questions. The multiple choice questions are worth 3 points each and the short response

Alex17521 [72]

Answer: 3x+8y=100

x+y=20

x=12

y=8

Step-by-step explanation: x would represent the number of multiple choice questions and y would represent the number of short response questions. the multiple choice questions were 3 points meaning that you need to find x. the short answer response questions were 8 points meaning you need to find y. altogether you need to get 100 points. for the second equation you have 20 questions that need to be both multiple choice and short response. therefore the second equation would be x+y=20. if you solved this, the answer would be that x equals 12 and y equals 8. hope this helped! :))

3 0

3 years ago

Which expression is equivalent to ^3 sqrt 1/1000 c^9 d^12

tamaranim1 [39]

Answer:

$\sqrt[3]{ \frac{1}{1000} {c}^{9} {d}^{12} } \\ = \frac{1}{10} {c}^{3} {d}^{4}$

5 0

3 years ago