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Liula [17]
3 years ago
13

Work out the point of intersection of the lines 2x + 3y = 11 and 2y = 13 – 3x

Mathematics
1 answer:
borishaifa [10]3 years ago
3 0

Answer:

x = 3.4

y = 1.4

Step-by-step explanation:

2x + 3y = 11

2y = 13 – 3x, then y = (13 - 3x)/2

substitute for y:

2x + 3((13 - 3x)/2) = 11

reduce:

2x + (39 - 9x)/2 = 11

reduce:

2x + 19.5 - 4.5x = 11

subtract 19.5 from both sides of the equation and combine for x:

-2.5x = -8.5

divide both sides by -2.5:

x = 3.4

y = (13 - 3(3.4))/2 = (13 - 10.2)2 = 1.4

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marysya [2.9K]

Answer:

4 miles

Step-by-step explanation

If your mom can walk 1 mile in 14 minutes then 2 miles would take her 28 minutes 3 miles would take her 42 minutes and finally if she walked 4 miles it would take her 56 minutes.

14 + 14 + 14 + 14 = 56

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3 0
2 years ago
If the area is 27 meters &amp; 6 meters is the height what is the length ?
bezimeni [28]
Area= legnth times width
or sometimes
area=legnth times height
area=measure1 times measure 2 on a flat plane
dependson the names

area=27
height=6
area=legnth times height
subsitute
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divide both sides by 6
27/6= legnth
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8 0
3 years ago
Write the geometric sequence that has four geometric means between 1 and 7,776.
Semmy [17]
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You then have to take its 5th root and that's the geometric ratio. Which is 6. 

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4 0
3 years ago
Can the sides of a triangle have lengths 6.2, 0.5, and 7.8?<br> yes or no
Vitek1552 [10]
No, it's not possible for the sides of a triangle to have those lengths.

According to the triangle inequality theorem, the sum of any two sides of the triangle has to be bigger than the last side. Let's test this.

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This inequality satisfies the triangle inequality theorem.

7.8+0.5\ \textgreater \ 6.2

This also satisfies the theorem.

6.2+0.5 \textless \ 7.8

Uh oh. This does not satisfy the triangle inequality theorem. Thus, it is not possible for a triangle to have these side lengths.
4 0
3 years ago
What is 6 times 3/8 in simplest form
agasfer [191]
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<span>6/1 * 3/8 </span>

<span>Now, multiply the tops and bottoms to get: </span>

<span>18/8 </span>

<span>We can divide the top and bottom by 2, giving us: </span>

<span>9/4</span>
8 0
4 years ago
Read 2 more answers
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