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attashe74 [19]
3 years ago
9

3x + 5y = 23 y = 4x What are x and y that make both equations true?

Mathematics
1 answer:
Flauer [41]3 years ago
8 0
So basically just add the equations to get rid of y. Then solve for x and plug into one of the equations for y. (1,4)

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If you have an average 90. Give two numbers other than 90 that would make the average 90
klemol [59]

Answer:

The numbers 180 and 0 would make the average 90

Step-by-step explanation:

we know that

To find the average of two numbers, add the numbers and then divide by two.

Let

x ----> one number

y ----> the other number

The average is equal to

(x+y)/2

For x=180 and y=0

the average is equal to

(180+0)/2=90

therefore

The numbers 180 and 0 would make the average 90

5 0
3 years ago
On a coordinate plane, a curved line crosses the x-axis at (negative 1, 0) and crosses the y-axis at (0, 0.25). The line exits t
creativ13 [48]

Answer:

b

Step-by-step explanation:

hope this helps

8 0
3 years ago
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19 divided 800 (estimated)
torisob [31]

Answer:

0.02375

Step-by-step explanation:

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6 0
3 years ago
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In the following addition problem, the letters A,B,C stand for three different digits. What digits should replace each letter?
Eva8 [605]
Alright so I got A=4, B=5 and C=9

   A B C          
+ A C B
----------
   C B A

   459
+ 495
--------
   954


8 0
3 years ago
If I have a floor that is 100 3/4 feet by 75 1/2 what is the area
Vlad [161]
The area, assuming is a rectangular floor, is their product.

so simply convert the mixed to improper and get their product.

\bf \stackrel{mixed}{100\frac{3}{4}}\implies \cfrac{100\cdot 4+3}{4}\implies \stackrel{improper}{\cfrac{403}{4}}
\\\\\\
\stackrel{mixed}{75\frac{1}{2}}\implies \cfrac{75\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{151}{2}}\\\\
-------------------------------\\\\
\cfrac{403}{4}\cdot \cfrac{151}{2}\implies \cfrac{403\cdot 151}{4\cdot 2}\implies \cfrac{60853}{8}\implies 7606\frac{5}{8}~ft^2
6 0
3 years ago
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