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dangina [55]
3 years ago
5

Solve the system by either elimination or substitution

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
5 0
The correct answer is A: x=2 and y=-3. Either method would work, but for example, let's use elimination. If you multiply the second equation by 5, you get: 10x +5y = 5. When you add both equations, you can then cross out both y terms. You are left with one equation that reads: 13x=26. Solving for x gives you 2. You can substitute 2 in for x in either equation and you will receive -3 for your y value.
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Dougie has a January hiking goal. Dougie
igomit [66]

Answer:

84 miles

Step-by-step explanation:

35% as a decimal is .35.

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7 0
2 years ago
On a test, Shoshana got 65% or 23.4 of the items correct? How many items were on the test?
Marizza181 [45]
65 % ------------------ 23.4 items
100 % ----------------- x items
65 : 100 = 23.4  : x
65 x = 100 * 23.4
65 x = 2340
x = 2340 : 65
x = 36
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6 0
3 years ago
Read 2 more answers
HELPPPPPP ASAP What is the length of the third side of the window frame below? (5 points) (Figure is not drawn to scale.) 58a 1)
ollegr [7]

Answer:

The answer is 3) 40.

Step-by-step explanation:

since you're working with the Pythagorean theorem, you should know that a^2+b^2=c^2, therefore, we know that we only have two sides. we have a and c. we know that a = 42 and c = 58, giving us the equation of 42^2+b^2=58^2,

we want to find b!

so we would simply subtract the two.

58^2 - 42^2 = b

b = 1600

now we want to square root,

b = sqrt1600

which in the end, gives us the answer of 40.

4 0
2 years ago
“twice the sum of a number and 6 is more than 84”
stealth61 [152]

Answer:

81

Step-by-step explanation:

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2x=78

81

find your own way

3 0
2 years ago
Helppp this is chemistry not math though
Scorpion4ik [409]

Answer:

It is balance she need to use. Answer is B.

7 0
3 years ago
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