All categories

3 years ago

3.Solve the system of equations: X-4y=-22 x+4y=10

Mathematics

1 answer:

laila [671]3 years ago

6 0

Answer:

-0.5

Step-by-step explanation:

Use the simultaneous equations method:

x - 4y = 6

3x + 4y = 10

Add these two equations together to cancel out 'y':

4x = 16

Divide both sides by 4:

x = 4

substitute this value into one of the equations:

(4) - 4y = 6

Subtract 4 from both sides:

- 4y = 2

Divide both sides by -4:

y = -0.5

goodluck!

You might be interested in

Please answer<br> *WILL GIVE BRAINLIEST*<br> DO NOT EXPLAIN

irina [24]

Which one do you want me to answer?? All of them?? Or what.....

7 0

3 years ago

What is the quotient a-3/7÷3-a/21

Airida [17]

I wish you were using parentheses here. I must assume (without knowing for sure) that y ou mean

a - 3/7
----------
3 - a/21

The LCD here is 21, since 7 divides into 21 without a remainder.

Thus, multiply numerator and denominator by 21:

21a - 9
-----------
63 - a

You could leave this result as is, or you could factor out 3:

7a-3
3 ---------
63-a

3 0

3 years ago

Read 2 more answers

at the farmers market 8 apple cost $5.20 if each apple cost the samw amount what is the price per apple

Margaret [11]

$\displaystyle\bf Solve:8\times p=5,2 \$ => p=\frac{5,2}{8} =\frac{5,2:\boxed{8}}{8:\boxed{8}} =0,65\$\quad She \:unit\: cost\:is\:\underline{ 0,65} \\\\Check :\:8\times\underline{0,65} =5,2\$ \\\\0,65=0,65 \\\\\rightarrow The\: price\:per \:apple \:is \: 0,65 \$$

7 0

3 years ago

Evaluate 33/5 - 1/10

azamat

Answer:

$\large\boxed{\dfrac{13}{2}=6\dfrac{1}{2}=6.5}$

Step-by-step explanation:

We have the different denominators.

The common denominator is 10.

$\dfrac{33}{5}=\dfrac{33\cdot2}{5\cdot2}=\dfrac{66}{10}$

We can subtract these fractions now.

$\dfrac{33}{5}-\dfrac{1}{10}=\dfrac{66}{10}-\dfrac{1}{10}=\dfrac{66-1}{10}=\dfrac{65:5}{10:5}=\dfrac{13}{2}\\\\\dfrac{13}{2}=\dfrac{12+1}{2}=6\dfrac{1}{2}$

3 0

4 years ago

Read 2 more answers

Maria is purchasing a car whose MSRP is $22,450. She has asked for an upgrade to a premium package for which the cost is $4000.

N76 [4]

The total price of the vehicle would be $<span>20,150</span>

4 0

3 years ago

3.Solve the system of equations: X-4y=-22 x+4y=10​

3.Solve the system of equations: X-4y=-22 x+4y=10