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Sonja [21]
3 years ago
12

What number represents the most accurate estimation of 38+23

Mathematics
2 answers:
V125BC [204]3 years ago
8 0
60 would be the case because the real answer is 61 you would round down to get an estimated answer
tino4ka555 [31]3 years ago
5 0
38 rounded is 40 and 23 rounded is 20 add
60
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Hayley so 20 tickets to the school play for total of $225. Early bird tickets were $10 regular priced tickets are $15. Wright an
alexandr402 [8]

System of Equations

For the problem to solve we'll use the following variables:

x = number of the early bird tickets sold

y = number of the regular tickets sold

Haley sold a total of 20 tickets, thus:

x + y = 20 [1]

Early bird tickets cost $10 and regular tickets cost $15, thus the total money collected is:

10x + 15y = 225

Dividing by 5:

2x + 3y = 45 [2]

We have to solve the system of equations [1] and [2].

Multiply [1] by -2:

-2x - 2y = -40 [3]

Add [3] to [2]:

-2x - 2y +2x + 3y = -40 + 45

Simplifying:

y = 5

Substituting in [1]:

x + 5 = 20

Subtracting 5:

x = 20 - 5

x = 15

Solution: Hayley sold 15 early bird tickets and 5 regular-priced tickets

The order pair solution is (15,5)

5 0
1 year ago
The charges for a delivery service are explained in the table what is the rate of change
alexandr1967 [171]
I see no table so i can’t awnser it plz post one with it thanks
4 0
3 years ago
Find an equation for the plane through the points \left(0,-2,-3\right) and \left(2,-9,-10\right) and perpendicular to the plane
padilas [110]
I dont know i will tell you when i find out
4 0
3 years ago
721 lbs per week to kg per second please show work
Oduvanchick [21]

Answer: Hi!  So, 1 lbs per week are equal to 7.4999e-7 kilograms per second. We can use this to convert lbs per week to kg per second. 721 x 7.4999e-7 = 0.000540741!

8 0
2 years ago
Find each unknown angle measurement.
Alex Ar [27]

Answer:

angle(2) = 118 degree

angle(3) = 118 degree

angle(4) = 62 degree

Step-by-step explanation:

To find angle 2 :

62   + angle{2} = 180 \\ angle{2} = 180 - 62 = 118 \: degree

The rule (head to head):

angle(2) = angle(3) = 118 degree

And the last one is angle(4) which is the same thing:

angle(4) = angle(1) = 62 degree

5 0
2 years ago
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