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3 years ago

Which of the following is a valid conclusion based on the given argument?

Mathematics

2 answers:

Marysya12 [62]3 years ago

6 0

Answer:

Given that x=5, when we substitute in 5 for 2x + 3 = 13, the equation will turn out to be true.

Step-by-step explanation:

2x + 3 = 13 x=5

2(5)+3=13

10+3=13

13=13

fiasKO [112]3 years ago

4 0

2x + 3 = 13

x=5

2(5)+3=13

10+3=13

13=13

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Using the Pythagorean method solve the problem and find the area of the triangle

denis-greek [22]

Answer:pythagoream theorem applies to right angle triangle.

Formula

C^2= a^2 + b^ 2

Where a&b are the two sides of the triangle so we need to find side c.

C^2 = 35.42^2+ 21.64^2

C^2 = 1254.57 + 468.29

C^2 = 1722.86

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C= 41.51m

Area of triangle

A = ab/2

A = 35.42 x 21.64/2

A = 383.24.

Step-by-step explanation:

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3 years ago

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Where’s the expression

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3 years ago

Read 2 more answers

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ratelena [41]

1)
Solving from system of equations:
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$\left \{ {{1*x+33*y=18,40} \atop {x+y=80}} \right.\\x=80-y\\0,01*(80-y)+0,33y=18,40\\0,8-0,01y+0,33y=18,40\\0,32y=18,40-0,8\\0,32y=17,60 /:0,32\\y=55\\x=80-55=25$
2)
x- amount of 20 cent stamops
y-amount of 34 cent stamps
From system of equations:
$\left \{ {{0,2x+0,34y=19,90} \atop {x+y=75}} \right.\\x=75-y\\0,2(75-y)+0,34y=19,90\\ 15-0,2y+0
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3 years ago

Noah solved three math problems. The first problem took him 1 minute. The second

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Answer:

255 seconds

Step-by-step explanation:

60 seconds x 1.30 = 78.78 seconds

78.78 seconds x 1.5 = 117 seconds

117+78+60= 255 seconds

hope this helps ^D^

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3 years ago

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ahrayia [7]

Answer:

y=5

Step-by-step explanation:

7 0

2 years ago