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den301095 [7]
3 years ago
8

ANSWER PROPERLY PLZ HELP ANSWER BOTH QUESTIONS

Mathematics
1 answer:
Snezhnost [94]3 years ago
8 0
1. 32 cents
2.im not sure
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Without drawing the graphs, find the points of intersection of the lines: a 7x+4y=23 and 8x–10y=19
emmainna [20.7K]

Answer:

(3,0.5)

Step-by-step explanation:

The given system has equations:

7x + 4y = 23 \\ 8x - 10y = 19

Let us multiply the second equation by 4 and the first equation by 10.

70x + 40y = 230 \\ 32x - 40y = 76

We add both new equations to get:

102x = 306 \\ x =  \frac{306}{102}  = 3

Put x=3 into the first equation and solve for y.

7(3) + 4y = 23 \\ 21 + 4y = 23 \\ 4y = 23 - 21 \\ 4y = 2 \\  y =  \frac{1}{2}

The point of intersection is the solution to the system of equation which is (3,0.5)

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She... she read 1/2 of a page in 1 minute...
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4x-y=3 is it linear or no
valentina_108 [34]

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Step-by-step explanation:

EASY

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Determine if the two triangles are congruent. If they are, state how you know.
mr Goodwill [35]

Answer:

B) SAS

Step-by-step explanation:

The angles between the two known equal sides are called a vertical angle and are equal. Thus you know Side-Angle-Side proves congruency.

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Compare the following: Size of a plant cell to thickness of a piece of paper​
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Since you like to steal points instead of actually helping people who need it the most you don't get an answer.

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