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kaheart [24]
3 years ago
12

Estimate the solution of the system x+y=4 2x-y=6 by sketching a graph of each linear function. Then solve the system algebraical

ly. Use your estimate to judge the reasonableness of your solution. The estimated solution is The algebraic solution is The solution is/is not reasonable because​
Mathematics
1 answer:
Juli2301 [7.4K]3 years ago
8 0

Answer:

(10/3, 2/3)

Step-by-step explanation:

You may find it easier to write these two equations x+y=4 2x-y=6 in a column:

x+y=4

2x-y=6

Adding these together will eliminate y:

3x = 10.  Then x = 10/3.

Substituting 10/3 for x in the first equation results in:

10/3 + y = 4

Clear fractions by multiplying all three terms by 3:

10 + 3y = 12

Then 3y = 2, and y = 2/3.

The solution is (10/3, 2/3)

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Find the missing number in the given proportion 3:2=6: ?​
Luba_88 [7]

Answer:

6 : 4

Step-by-step explanation:

3 : 2

6 : ?

3 × 2 : 2 ×2

6 : 4

6 0
3 years ago
3x+2y=8 how to solve
GarryVolchara [31]
8-3x
Divide the whole thing by 2 so it would be y=4-1.5x
6 0
3 years ago
the dance club is selling tickets to the next showcase adult tickets cost $5 and children's tickets cost $2 they sell twice as m
Marta_Voda [28]

Hey there! I'm happy to help!

Let's have the adult tickets be a and the children tickets be c.

a=2c (twice as many adult tickets as child tickets)

5a+2c=700 (dollar value of each ticket)

Have a wonderful day! I hope that the helps! :D

5 0
2 years ago
The table represents the function 7 = 5x- Output ) Input (3) -2 -18 8 x 1 2 2 12 8 2 2. What is the input when the output is 12
notsponge [240]
y_{-2}=5\cdot(-2)-8=-10-8=-18y=5x-812=5x-812+8=5x20=5xx=\frac{20}{5}x=4

6 0
1 year ago
Bianca took a job that paid $150 the first week. She was guaranteed a raise of 6% each week. How much money will she make in all
ivann1987 [24]

Answer:

$225.54 (hope it help)

Step-by-step explanation:

for 2nd week

$150 for the first week and a raise of 6% each week

which means 150+6%

6% of 150 is 9 (150x0.06)

150+9=159

and it repeats

for 3rd week

6% of 159 is 9.54 (159x0.06)

159+9.54=168.54

for 4th week

6% of 168.54 is 10.1124 (168.54x0.06)

168.54+10.1124=178.652

for 5th week

6% of 178.652 is 10.71912 (178.652x0.06)

178.652+10.71912=189.37112

an easier to do it is to just do 178.652 + 6% on your calculater

and I'll skip all the way to the 8th since you know the formula

212.777390432+6%=225.544033858

225.544033858≈225.54

3 0
2 years ago
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