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allsm [11]
3 years ago
14

7x - 3y = 4 2x - 4y = 1 The solution to the system of equations is

Mathematics
1 answer:
Butoxors [25]3 years ago
6 0
7x-3y=4 ..............(1)
2x-4y=1...............(2)

4(1)-3(2)   [-4 is the coefficient of y in (2), -3 is the coefficient of y in (1) ]
28x-12y = 16...........(1a)
6x-12y = 3...............(2a)
Subtract
22x = 13
solve
x=13/22 ....................(3)

Substitute (3) in (1)
7(13/22)-3(y)=4
solve for y
91/22-3y=4
3y=(91-88)/22=3/22
y=1/22

Answer: the solution is (13/22, 1/22)
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19 PTS!!!! PLZ HELP ASAP
Ira Lisetskai [31]

The number of muffin can yield is 18.

Step-by-step explanation:

Given:

The recipe needs  \frac{3}{4} cup chopped apple.

To find:

Umber of muffins when 1 \frac{1}{8} cup chopped apple is given.

Solution:

1\frac{1}{8} ÷  \frac{3}{4} = 1.5

1\frac{1}{8} cup apple is 1.5 times of \frac{3}{4} cup of apple

So, the number of muffins will be = 12 × 1.5

= 18

Thus 18 muffins can be yielded from a batch that contains 1 1/8 cups of chopped apple

6 0
3 years ago
Read 2 more answers
How do you solve 6650÷50
SpyIntel [72]

Answer:

its 133

Step-by-step explanation:

50 fits into 6650 133 times. u cant show a pic but if you know division, its easy.

4 0
3 years ago
The sum of a number and three is doubled and then added to the product of six and the original number to give forty six
Zina [86]

Answer:

The number is 5

Step-by-step explanation:

Let x represent the number

Now let's break it down!

Sum of a number and 3 gives;

x + 3

This is then doubled to give;

2* (x + 3)

This is added to the product of 6 and the original number to give 46

Product of 6 and the original number = 6 * x

Now 2* (x + 3) is added to 6 * x to give 46

2* (x + 3) + 6*x = 46

2x + 6 + 6x = 46

8x + 6 = 46

Subtract 6 from both sides

8x + 6 - 6 = 46 - 6

8x = 40

x = 40/8

x = 5

Hence, the number is 5

3 0
3 years ago
A recipe for waffles calls for 2 cups of flour and 3 teaspoons of baking powder.
katen-ka-za [31]

Answer:

8 teaspoons

Step-by-step explanation:

each cup of flour = 1 1/2 teapoons of bp

4 x 1 1/2 = 8

7 0
2 years ago
Is the simplified form of 2-3 + 3.3 rational?<br> Yes<br> No
N76 [4]

Answer:

YES IT IS

Step-by-step explanation:

2-3 + 3.3

= -1 + 3.3

= -4.3

We learn that:

Rational number: rational number is the number that can be written as a/b (a and b would be intergers and b is not equal to 0). Rational number would be most of numbers we use in out life, except Square root and Pi number.

In this case, -4.3 can be write as -43/10

So YES it would be a rational number

Hope this helped :3

6 0
3 years ago
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