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3 years ago

Solve the following system by using the elimination method. 2x + 2y = 8 4x - 2y = 10

Mathematics

2 answers:

Rudik [331]3 years ago

6 0

X = 3
y = 1

You can get this by adding straight through and the y terms will cancel. Then divide the x terms to get the answer. You can then plug that x into either equation to solve for y.

DENIUS [597]3 years ago

3 0

Choose any one of these. Hopefully this helps :D

They're both solved using elimination method. [The labels 'Method 1' & 'Method 2' do not change the way they're solved here].

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A pencil and ruler cost 1.50 together. The ruler is 1.00 more. How much is pencil

Stella [2.4K]

Ok so the solution which greenrune will (hopefully) correct

total is 1.5
p+r=1.5
rule is 1 more than pencil
r=1+p
sub 1+p for r
p+1+p=1.5
2p+1=1.5
minus 1 from both sides
2p=0.5
divide both sides by 2
p=0.25

pencil=$0.25

3 0

3 years ago

Read 2 more answers

( a + b ) ^ 2 = bao nhiêu

FromTheMoon [43]

Answer:

a square plus 2ab plus b square......hope this will help you...thank you

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3 years ago

Read 2 more answers

5/6-1/8 Solve by finding a common denominator A)30/48 B)34/48 C)38/48 D)42/48

GrogVix [38]

Answer:

B) 34/48

Step-by-step explanation:

The easiest common denominator to find is the product of the denominators you have.

The difference is ...

$\dfrac{5}{6}-\dfrac{1}{8}=\dfrac{5}{6}\cdot\dfrac{8}{8}-\dfrac{1}{8}\cdot\dfrac{6}{6}\\\\=\dfrac{40-6}{48}=\boxed{\dfrac{34}{48}}$

Additional comment

The difference numerator and denominator have a common factor of 2, so can be reduced to 17/24. The denominator 24 could have been used as the common denominator from the start.

5/6 -1/8 = 20/24 -3/24 = 17/24 . . . . reduced result

Using the least common denominator does not always result in a reduced sum or difference. If some other denominator is used (as here), then you can be assured that the result will need to be reduced to get to lowest terms.

8 0

2 years ago

In which quadrant is the number –14 – 5i located on the complex plane?

AlekseyPX

On the complex plane, the real component of a complex number is graphed along the horizontal axis while the imaginary component is graphed along the vertical axis.

Positive numbers go to the right on the real axis and up on the imaginary axis, and vice versa for negative numbers.

Therefore, the number -14-5i is in the 3rd quadrant because it graphed to the left of the origin and down.

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3 years ago

1. If 27.4578 is increased by 9.3456, what is the answer?

Dahasolnce [82]

Answer:

36.8034

not sure.....

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3 years ago