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2 years ago

−2x+7y=10 minus 3x+7y=2

Mathematics

1 answer:

viva [34]2 years ago

3 0

Answer:

I would multiply the first equation by −4 and the second by 3 and add together the two equatins (in columns): ... Step 2. Prepare the equations. Multiply every term in each equation by a ... Subtract Equation (4) from Equation (3). ... How do you solve the system 5x−10y=15 and 3x−2y=3 by multiplication?

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A print shop orders 58 T-shirts. They order 16 pink T-shirts, and six times as many blue T-shirts as white T-shirts. How many bl

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The have ordered 36 blue T-shirts.
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How I got it --- So, we take away 16 from 58. You get 42.
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So, from then, you know 36 is 6 times as many as 6, right? ( Because 6 x 6 = 36)
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So, then, you have ordered 36 blue shirts and 6 white shirts, because 36 + 6 =42.
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Glad I could help, and good luck!
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A 25 kg rock , is raised to the top of a hill 10 m high. What is the PE of the rock ?

nexus9112 [7]

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$Potential \: \: Energy =(mass) \times (gravity \: acceleration) \times (height) \\$

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If gravity acceleration is 10 :

$PE = 25 \times 10 \times 10$

$PE = 2500$

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If gravity acceleration is 9.8 :

$PE = 25 \times 9.8 \times 10$

$PE = 25 \times 98$

$PE = 2450$

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The area of a quadrilateral is 64 in^2. The length of the quadrilateral is 32 in. How wide is the quadrilateral?

Mars2501 [29]

Answer: 2 inches

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