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Anton [14]
2 years ago
5

Given that 2×+7=27 and 3×+1=28, does 2×+7=3×+1? explain ​

Mathematics
1 answer:
Maru [420]2 years ago
4 0

Answer:

No

Step-by-step explanation:

The variables are different in both problems. In 2×+7=27, it's 10, while in the other problem, it's 9.

27 doesn't equal 28.

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Does anyone know the answer??
vichka [17]

Answer:

100.00

Step-by-step explanation:

x=number of months until the costs are the same

50 + 20x = 25 + 30x

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2 years ago
What is the product of 2x + y and 5x – y + 3? x2 + xy + x + y2 + y
miskamm [114]

Answer: 10x^2+3xy+6x-y^2+3y

Step-by-step explanation:

You need to remember the Product of powers property:

(a^m)(a^n)=a^{(m+n)}

Then, knowing this property, now you have to apply the Distributive property. So:

(2x+y)(5x-y+3)=\\\\=(2x)(5x)-(2x)(y)+(2x)(3)+(y)(5x)-(y)(y)+(y)(3)\\\\=10x^2-2xy+6x+5xy-y^2+3y

Finally, to simplify this expression, you need to add the like terms.

Therefore, you get that the product is:

=10x^2+3xy+6x-y^2+3y

3 0
3 years ago
Read 2 more answers
2. Change the following statements into coordinate points and then plot them!
GREYUIT [131]

Answer:

The points are (-1, 1), (2, 7), (1, -1), (3, 0)

Step-by-step explanation:

Let us solve the question

∵ f(x) = y

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→ Let us use this fact to find the coordinates of each point

∵ f(-1) = 1

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∵ f(1) = -1

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∵ f(3) = 0

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The graph is attached down

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2 years ago
1 is 25% of what number
lbvjy [14]

Answer:

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3 years ago
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The graph shows how the number of keychains in your collection increased since you began collecting five months ago. How many ke
lina2011 [118]
Ten keychains in 3 months
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