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KengaRu [80]
3 years ago
10

Please answer really need it

Mathematics
1 answer:
Darina [25.2K]3 years ago
6 0

Answer:

31200

Step-by-step explanation:

31.2*10^3

We know that 10^3 is 1 with 3 zeros = 1000

31.2 *1000

Multiplying by 1000 moves the decimal 3 places to the right

31200

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Two hiking groups made the purchases shown below. What is the cost of each item. GROUP 1: 6 muffins, 12 granola bars, Total=$26.
stepladder [879]

Answer:

Price of each muffin = $1.25

Price of each granola bar = $1.6

Step-by-step explanation:

Group 1:

6 muffins, 12 granola bars

Total money paid = $26.70

Group 2:

8 muffins, 15 granola bars,

Total money paid = $34.00

To find:

Price of each item?

Solution:

Let the price of one muffin = $x

Let the price of one granola bar = $y

As per group 1, the equation can be written as:

6x+12y=26.70\\\Rightarrow x+2y=4.45 .... (1)

As per group 2, the equation can be written as:

8x+15y = 34 .... (2)

Let us use elimination method to solve for x and y.

Multiplying equation (1) with 8 and subtracting (2) from it:

16y-15y = 35.6 - 34\\\Rightarrow y = 1.6

Using equation (1):

x+3.2=4.45\\\Rightarrow x = 1.25

Therefore, the answer is:

Price of each muffin = $1.6

Price of each granola bar = $1.25

7 0
3 years ago
The walls in a room are being painted. If 4 cans cover 480 sq ft then how many cans cover 840 sq ft?
solong [7]

Answer:

7 cans

Step-by-step explanation:

You will first have to divide 480 by 4

The anwser is 480 ÷ 4 = 120

Then you will have to 840 ÷ 120 = 7

<h2>The answer is 7 cans </h2>
5 0
3 years ago
Read 2 more answers
If f(x)= VX-3, which inequality can be used to find the domain of f(x)?
NeX [460]

Answer:

the second one but I'm not sure it cuz it was a little bit different in my text I hope it

4 0
3 years ago
Helppppppoppp please 10 points !!!
Evgesh-ka [11]

Answer:

2x+27+x+27=180

3x+54=180

3x=180-54

x=126/3

x=42

angle B=x+27

=42+27

=69 degree

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Convert 17.47° to degrees, minutes, and seconds..
never [62]
For this question, this might help.
17.47 degrees is 17 + 0.47 degrees
If you are using minutes instead of decimal degrees, multiply the fraction by 60. So,

0.47 degrees * 60 minutes per degree= 28.2 minutes

Now you have 17 degrees 28.2 minutes but you can replace fractions of a minute with seconds
 
0.2 minutes * 60 seconds per minute= 12 seconds

So the answer for 17.47º is equal to 17º 28' 12".

I hope this helps.

7 0
3 years ago
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