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Debora [2.8K]
3 years ago
10

X+y=7 -x+y=-5 Quero a equação pelo método de adição, rápido u.u

Mathematics
1 answer:
TEA [102]3 years ago
5 0

Answer:

Step-by-step explanation:

x + y = 7

-x + y = -5

2y = 2

y = 1

x + 1 = 7

x = 6

(6, 1)

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Evaluate the expression 7^2/ x^2 - 2 for x = 3
vovikov84 [41]

Answer:

7

Step-by-step explanation:

7²/x²-2 when x=3

49/3²-2

49/9-2

49/7

answer=7

4 0
2 years ago
Dorian buys 2 pounds of almonds for $21.98 and 3 pounds of dried apricots for $26.25. Which is less expensive per pound? How muc
ozzi

Answer:

The apricots are less expensive per pound.

Step-by-step explanation:

Cost of 1 pound of almonds = 21.98/2

Cost of 2 pounds of almonds = $21.98

So then you have to do 21.98 - 21.98/2. Which equals $10.99

Cost of 1 pound of dried apricots = 26.25/3

Cost of 3 pounds of dried apricots = $26.25

So then you have to do $26.25 - 26.25/3 which = $17.5 then divide that by 2 which equals $8.75.

To find out how much less expensive you have to find the difference, so to do that you have to do $10.99 - $8.75 = $2.24 per pound less expensive.

4 0
3 years ago
Given: RW ≅ WT; UW ≅ WS Prove: RSTU is a parallelogram. Identify the steps that complete the proof.
JulijaS [17]

Identify the steps that complete the proof.

♣ = <span>✔ vertical angles theorem</span>

♦ = <span>✔ SAS</span>

♠ = <span><span>✔ CPCTC</span></span>

7 0
3 years ago
Read 2 more answers
PRE-ALGEBRA<br> DUE NOW! PLEASE HELP!
Nata [24]
\bold{FULL SOLUTION:}

4 0
1 year ago
I need the y and x intercepts
Irina18 [472]

The x intercept is that point at which curve cross the x axis and y intercept is the point at whcih curve intersect y axis.

As the curve cross the x axis at point (-1.2,0) and cross the y axis at (-0.7,0).

So x intercept is -1.2 and y intercept is -0.7.

6 0
1 year ago
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