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Dmitrij [34]
4 years ago
13

Which expresion is equivalent to 30(1/2x-2)+40(3/4y-4)

Mathematics
1 answer:
Dafna11 [192]4 years ago
6 0

Answer:

15x +30y -220

steps:

30(1/2x-2)+40(3/4y-4)

= 15x-60 +30y-160

= 15x +30y -220

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A building casts a shadow that is 36 feet long. At the same time of day, a nearby 9-foot tall tree casts a shadow that is 4 feet
ANTONII [103]

Answer:

16 feet is the correct answer to this problem.

5 0
3 years ago
The cost per minute for a conference phone call originally 2.60 increased by 30% what is the new price?
harkovskaia [24]
c.) $3.38

Original price = $2.60 
* It is the basis of increase thus, 100%
* 
The increase is 30%, thus, 100% + 30% = 130%

To get the new price, simply multiply the original price to 130%

$2.60 * 130% = $3.38

Another way of solving the problem is getting the equivalent of 30% and adding it to the original price.

$2.60 * 30% = $0.78
$2.60 + $0.78 = $3.38

6 0
3 years ago
Read 2 more answers
Which is an equivalent form of the equation 2x - y = 12?
aalyn [17]
2x-y=12
-y=12-2x
(-y=12-2x)devide -1
y = -12+2x
y=2x-12
ANSWER = C
7 0
3 years ago
Function 1 is defined by the equations r=3/4t +5<br> Function 2 is defined by the following table
Dvinal [7]

Function 2 has a greater y-intercept

<h3>Graphs</h3>

Graphs can be used to represent functions, equations, tables and relations

<h3>Equations</h3>

The equation of function 1 is given as:

r =\frac 34t + 5

To calculate the y-intercept, we set t to 0.

So, we have:

r =\frac 34 \times 0 + 5

r =5

For the table of function 2, the y-intercept is 5.25

By comparison:

5.25 is greater than 5

Hence, function 2 has a greater y-intercept

Read more about graphs and functions at:

brainly.com/question/3939432

7 0
3 years ago
How do I solve this?​
Paladinen [302]

Answer:

the answer is 4

Step-by-step explanation:

i added and subtracted and got 4

6 0
3 years ago
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