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Lyrx [107]
3 years ago
8

N.) Evaluate the expression (xy)? + 8, when x = 2 and y = 4.

Mathematics
2 answers:
Marta_Voda [28]3 years ago
8 0

Answer:

16

Step-by-step explanation:

im guessing the ? has nothing to do with the equation but

xy is x*y or 2*4 (since the values of x & y were already given) not 24 which is sometimes a common mistake

2*4 is 8

and 8+8= 16 :)

any questions just ask me ♡

kodGreya [7K]3 years ago
4 0

Answer:

16

Step-by-step explanation:

x=2. y=4

following bodmas

2*4=8

  • 8+8=16
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Skylar owns a trucking company. For every truck that goes out, Skylar must pay the driver $11 per hour of driving and also has a
jeyben [28]

Answer:

The set of needed equations is

h = 30 m

11 m +  3  h = 909  where

the driver drove for m hours.

h : distance covered in m hours

Step-by-step explanation:

Here, according to the question:

The per hour rate of driver  = $11

The gas maintenance expense = $3 per mile.

The total distance covered by drives is 30 miles per hour.

The total  expenses paid to driver  = $909

Now, let us assume the driver drove for m hours.

The average speed of driver was 30 miles / hour

⇒ Driver covers 30 miles in 1 hour

SO, distance covered in m hours  = h = m x 30 = 30 m

or, h = 30 m

So,according to the question, the total amount paid :

Charges of m hours driving + maintenance charges for h miles

= 11 m + 3( h)

or, 11 m +  3  h = $909

Hence the set of needed equations is

h = 30 m

11 m +  3  h = 909

4 0
3 years ago
Skeleton practices playing spooky music on his piano he practice 60 minutes every single day how many hours does skeleton play i
k0ka [10]
He plays for 14 hours
5 0
2 years ago
Two types of tickets were sold for an upcoming concert: adult tickets and child tickets. In total, there
Alona [7]

Answer:

Adult ticket is $60

Child ticket is $32

Step-by-step explanation:

Let x = price of adult ticket

     y = price of child ticket

(1)    175x + 103y = 13796               (2)    2x + 2y = 184

                                                                 x + y = 92

                                                                       y = 92 - x

      175x + 103(92 - x) = 13796

      175x + 9476 - 103x = 13796

       72x = 4320

           x = 60                                                  y = 92 - 60

                                                                        y = 32

4 0
2 years ago
7th grade math pls help
Yakvenalex [24]

Answer:

"A" IS THE ANSWER

Step-by-step explanation:

8 0
3 years ago
The blades of a windmill turn on an axis that is 35 feet above the ground. The blades are 10 feet long and complete two rotation
Alona [7]

Answer:

h = 10sin(π15t)+35

Step-by-step explanation:

The height of the blade as a function f time can be written in the following way:

h = Asin(xt) + B, where:

B represets the initial height of the blade above the ground.

A represents the amplitud of length of the blade.

x represents the period.

The initial height is 35 ft, therefore, B = 35ft.

The amplotud of lenth of the blade is 10ft, therefore A = 10.

The period is two rotations every minute, therefore the period should be 60/4 = 15. Then x = 15π

Finally the equation that can be used to model h is:

h = 10sin(π15t)+35

5 0
3 years ago
Read 2 more answers
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