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DerKrebs [107]
2 years ago
9

Choose the correct option that explains what steps were followed to obtain the system of equations below.

Mathematics
1 answer:
Alika [10]2 years ago
8 0

To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by 5. The solution to system B will be the same as the solution to system A.

<h3>How to find the relationship between two equations?</h3>

System A equations:

-x - 2y = 7  ------ (1)

5x - 6y = -3  ------(2)

We multiply the first equation by 5, to get :

-5x - 10y = 35 -----(3)

The sum of equation (2) and equation (3) gives:

-16y = 32

y = 32/-16

y = -2

Thus, solution of system B is;

-x - 2(-2) = 7

-x + 4 = 7

x = -3

So, the solution of system B is (-3, -2), that means the solution of both systems are same.

Read more about equations at; brainly.com/question/2972832

#SPJ1

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You are given £10 worth of the 20p coins, how many 20p coins is this? coins
tangare [24]

Answer:

50 coins

Step-by-step explanation:

We are given £1 worth of 20p coins.

Since it is known that,

£1 = 100p

i.e. £10 = 100 ×10 p = 1000p

As, we are taking 20p coins to get make the sum 1000p.

Thus, the number of 20p coins will be \frac{1000}{20} i.e. 50 coins

Hence, we get 50 coins to make £10 worth 20p coins.

6 0
3 years ago
A histogram titled Number of texts has time on the x-axis and texts on the y-axis. From 6 a m to 7:59 a m there were 15 texts, 8
ahrayia [7]

Answer:

Assessment started: undefined.

Item 1

Read the poem.

The Courage That My Mother Had  

by Edna St. Vincent Millay.

The courage that my mother had

Went with her, and is with her still:

Rock from New England quarried;

Now granite in a granite hill.

The golden brooch my mother wore

She left behind for me to wear;

I have no thing I treasure more:

Yet, it is something I could spare.

Oh, if instead she’d left to me

The thing she took into the grave!—

That courage like a rock, which she

Has no more need of, and I have.

In "The Courage That My Mother Had," what is the meaning of the line Now granite in a granite hill?  

The speaker wants to be more like her mother.

The speaker's mother has passed away.

The speaker's mother has turned to stone.

The speaker is visiting her mother's home.

Step-by-step explanation:

5 0
3 years ago
Which statement about this product is true? 0.36×(-7 5/8)
Schach [20]
A.It is less than -7 5/8
because multiplying by a number less than 1
gives a smaller number.
B.It is greater than -4
because 0.36×(7 5/8)
0.36*(7 5/8) is less than 1/2 * 8
C.It equals -7 5/8
because 36/36
equals 1
, and 1
times any number equals that number.
D.It equals 0
because 0.36
rounded to the nearest whole number is 0
, and 0
times any number is 0.
THESE ARE ALL THE ANSWER CHOICES!!!
3 0
4 years ago
Read 2 more answers
Giving extra points and brainliest
Vladimir [108]
60 miles because if you plug it in, it says she uses 2 gallons of gas. You can substitutes D=30(2), which comes out to 60
6 0
3 years ago
Simplify 3 divided by 5-6i
Shtirlitz [24]

Answer:

\frac{15}{61}+\frac{18}{61}i

Step-by-step explanation:

\frac{3}{5-6i}

To simplify or to write in the form a+bi, you will need multiply the top and bottom by the bottom's conjugate like so:

\frac{3}{5-6i} \cdot \frac{5+6i}{5+6i}

Keep in mind when multiplying conjugates you only have to multiply first and last.

That is the product of (a+b) and (a-b) is (a+b)(a-b)=a^2-b^2.

(a+b) and (a-b) are conjugates

Let's multiply now:

\frac{3}{5-6i} \cdot \frac{5+6i}{5+6i}=\frac{3(5+6i)}{25-36i^2}

i^2=-1

\frac{15+18i}{25-36(-1)}

\frac{15+18i}{25+36}

\frac{15+18i}{61}

\frac{15}{61}+\frac{18}{61}i

5 0
3 years ago
Read 2 more answers
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