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Gwar [14]
3 years ago
13

Need help on this question please x-7y=10 and 2x+14y=21

Mathematics
1 answer:
dalvyx [7]3 years ago
5 0

Answer:

x=7y+10

Step-by-step explanation:

x−7y=10

x−7y+7y=10+7y

x=7y+10

Answer:

x=−7y+21/2

12/2 is a fraction

Step-by-step explanation:

2x+14y=21

2x+14y+−14y=21+−14y

2x=−14y+21

2x2=−14y+21/2

x=−7y+21/2

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What is the least common denominator for 2/3 and 3/5
ivolga24 [154]

Answer: 15

Step-by-step explanation: The common denominator for these 2 fractions is simply the least common multiple for the 2 denominators.

To find the least common multiple or <em>lcm</em> of 3 and 5, we begin by listing the first few multiples of each number.

<em>Multiples of 3</em>

1 x 3 = 3

2 x 3 = 6

3 x 3 = 9

4 x 3 = 12

5 x 3 = 15

We skipped 0 x 3 because our lcm can't be 0.

Next we list the multiples of 5.

<em>Multiples of 5</em>

1 x 5 = 5

2 x 5 = 10

3 x 5 = 15

Notice that 15 appears in both lists so

our least common denominator is 15.

4 0
3 years ago
Solve the linear equation<br><br> <img src="https://tex.z-dn.net/?f=4%5E%7Bx%2B7%7D%20%3D%208%5E%7B2x-3%7D" id="TexFormula1" tit
GREYUIT [131]

Answer:

x = 5.75

Step-by-step explanation:

4^(x+7) = 8^(2x-3)

But; 4^(x+7) = 2^2(x+7)

8^(2x-3) = 2^3(2x-3)

2^2(x+7) = 2^3(2x-3)

Since the bases are the same;

2(x+7) = 3(2x-3)

2x + 14 = 6x -9

14 + 9 = 6x - 2x

23 = 4x

x = 23/4

<u>x = 5.75</u>

3 0
3 years ago
The cost for fudge at Candy Lane is represented by the table. The graph shows the cost of a similar fudge that Best Fudge Shop s
Vladimir [108]

Can you add an attachment to the table, so we can see the prices.

5 0
3 years ago
Read 2 more answers
How do I answer this please help homework due tomorrow x​
ryzh [129]

Answer:

63.6 m^2

Step-by-step explanation:

A = (pi)r^2

r = d/2 = 9 m / 2 = 4.5 m

A = (3.142)(4.5 m)^2

A = 63.6 m^2

8 0
3 years ago
A dilation is an enlargement if the scale factor is _____ between 0 and 1. greater than 1. less than 0. equal to 1.
boyakko [2]

Dilation is one of the several means by which we can transform a graph. A function is dilated when is stretched away from an axis or compressed towards an axis. So this means there are 2 types of dilation: a) Stretch (Enlargement) and b) Compression.

Depending on the direction of Dilation, we have Horizontal Dilation and Vertical Dilation.

For a function y = f(x), horizontal dilation is achieved when x is replaced by \frac{x}{A} and vertical dilation is achieved when y is replaced by \frac{y}{A} where A is the scale factor.

In each of these cases, the function will be stretched if |A| > 1 and will be compressed if |A| < 1.

Therefore, the answer to the given question is:

A dilation is an enlargement if the scale factor is greater than 1.

4 0
3 years ago
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