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IgorLugansk [536]
3 years ago
5

Solve this system of linear equations. Separate

Mathematics
1 answer:
alex41 [277]3 years ago
5 0

Answer:

y = 7 and x =3

Step-by-step explanation:

use elimination method

so we gonna eliminate y first

9x = 1 - 4y

-7x = -7 + 4y

7| 9x = 1 - 4y

9| -7x = -7 + 4y

63x = 7 - 28y

-63x = -63 + 36y

add eqtn 1 to eqtn2

you will get

0 = -56 + 8y

56 = -56 + 56 + 8y

56 = 8y

56÷8 = 8y÷ 8

7 = y

also eliminate x as we have done wth y

4| 9x = 1 - 4y

4| -7x = -7 + 4y

36x = 4 - 16y

-28x = -28 + 16y

add the two equations

u will get

8x = -24 + 0

8x = -24

8x÷8 = 24÷ 8

x = 3

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kondaur [170]
<span>An eagle is said to fly a total of 290 miles in 5 days
We need to find how far did the eagle fly per day if it flies the same distance.
=> We need to divide the total distance in 5 in order to get the answer
=> 290 / 5
=> 58
Therefore, an eagle fly 58 miles per day and able to reach the total of  290 miles in 5 days.
First day 58
2nd day = 116 miles
3rd day =  174 miles
4th day = 232 miles
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6 0
3 years ago
A boat travel 45 miles in three hours at this rate how many miles with a boat travel in half an hour
Mkey [24]
About 7.5 miles if you divide 45/3 is 15 so divide 15/2 which is 7.5
5 0
3 years ago
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An ellipse has a center at the origin, a vertex along the major axis at (0, 17), and a focus at (0, −8). Which equation represen
Marianna [84]
We know that
<span>Since the focus and vertex are above and below each other, rather than side by side, I know that this ellipse must be taller than it is wide.
</span>Then 
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</span>Also, since the focus is 8 <span>units below the center, then </span><span>c = 8
</span>since the vertex is 17<span> units above, then </span><span>a = 17
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</span>b²=17²-8²-----> b²=225
the equation is
y²/a²+x²/b²=1------> y²/289+x²/225=1

the answer is
y²/289+x²/225=1

see the attached figure

7 0
4 years ago
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Use the unique factorization theorem to write the integer in standard factored form.<br><br> 1.5400
mash [69]

Answer:

Standard factor form of the integer : 15400 = 2³ × 5² × 7 × 11

Step-by-step explanation:

According to the unique factorization theorem, a given integer n (where, n>1), either is a prime number or can be represented as the product of the prime numbers.

Firstly, it is checked that the given integer is divisible by the smallest prime number 2 . If the integer is not divisible by 2, then the integer is checked for the next prime number 3 and then checked for 5 and so on until the remaining integers are prime numbers.

So, the standard factored form of the integer:

15400 = 2 × 770

15400 = 2 × 2 × 3850

15400 = 2 × 2 × 2 × 1925

15400 = 2 × 2 × 2 × 5 × 385

15400 = 2 × 2 × 2 × 5 × 5 × 77

15400 = 2 × 2 × 2 × 5 × 5 × 7 × 11

or,

15400 = 2³ × 5² × 7 × 11

Therefore, the standard factor form of the integer: 15400 = 2³ × 5² × 7 ×11

6 0
4 years ago
Question 3
34kurt

Answer:

The distance from point A to the line of reflection is the same as the distance from point AGH to the line of reflection. This means that the line of reflection bisects .

1)    4           2            2

2)    5.77      2.89    2.89

3)    7.9      3.95    3.95

Step-by-step explanation:

8 0
3 years ago
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