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elena-14-01-66 [18.8K]
2 years ago
12

Solve the system of equations by graphing or using a table 3x+ y= 5 x -y = 7

Mathematics
2 answers:
poizon [28]2 years ago
8 0

The answer is (3,-4)

kobusy [5.1K]2 years ago
6 0
Its supposed to be 3x+y=5 x-y=2

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diketahui akar akar persamaan kuadrat 2x^2-9x + 7 = 0 adalah x1 dan x2. nilai dari x1^2 + x2^2- 4x1x2 adalah...
Leviafan [203]
<span>jika xy = 0 , kemudian menganggap x dan y = 0

faktor 2x^2-9+7
(2x-2)(x-7)=0

2x-2=0
2x=2
x=1

x-7=0
x=7

</span><span>jika 1 = x1 dan 7 = x2 maka jawabannya adalah 1^2+7^2-4(1)(7)=22
</span>
jika 7 = x1 dan 1 = x2 maka jawabannya adalah
7^2+7^2-4(7)(1)=22

<span>jawabannya adalah 22</span>


6 0
3 years ago
Need help ASAP DUE IN ONE DAY thanks
erastovalidia [21]

Answer:

(5k+14)(3k+8)

Step-by-step explanation:

7 0
2 years ago
there are 3 boys and 2 girls in the Krunch family.Mr.Krunch bought 3 1/2 pounds of candy to divide equally among them.How much c
user100 [1]
In total there are 5 kids so
5÷3.5=1.4
(rounded)

7 0
3 years ago
The table below represents a linear function f(x) and the equation represents a function g(x):
Goshia [24]
The slope of f is 10 because as x increases by 1, f(x) increases by 10.The slope of g is lesser at 5, because every time x increases it only increases by 5. By plugging in 1 and 2 to g(x), we can see that g(2)=11, which is 5 more than g(1)=6.
6 0
3 years ago
10) A rhombus has a<br> diagonal 8.6 mm long<br> and an area of 81.7 mm. what is the<br> perimeter?
BaLLatris [955]

Answer:

P=41.72

Step-by-step explanation:

S=ACxDB/2

81.7=8.6xDB/2

81.7=4.3xDB|:4.3

19(mm)=DB

DO=19/2=9.5

OC=8.6/2=4.3

(O is the center of the rhombus, where two diagonals meet)

a²+b²=c² (DO²+OC²=DC²)

9.5²+4.3²=c²

90.25+18,49=c²

√108,74=√c²

c≈10.43

P=4c

P=4x10.43

P=41.72

Hope it helps:)

6 0
2 years ago
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