solve x-5y=-30, 3x+5y=10 show your work

Answers

Answer 1

1) x = 5y - 30  

2) x = - 1.6y + 3.3

im assuming these are 2 different questions

Explanation:1)

Start with the equation:

x - 5y= -30

add 5y to both sides:

x = 5y - 30

Your answer is x = 5y - 30  

2)

Start with the equation:

3x+5y=10

subtract 5y from both sides:

3x = -5y + 10

divide by 3 to get x singular

x = - 1.6y + 3.3

Your answer is x = - 1.6y + 3.3

Hope this helps :)


Related Questions

please help with this.

Answers

9514 1404 393

Answer:

  d.  The triangles are not similar

Step-by-step explanation:

The angle between the given sides is the same, so we need to compare the side ratios. In ΔQRS, we have ...

  QR/RS = 4/15

In ΔVTU, we have ...

  VT/TU = 8/32 = 1/4 ≠ 4/15

The triangles are not similar because corresponding sides are not proportional.

You are trapped in a concrete room with no doors or escape methods of any kind. And a table and a mirror is all you have. How do you escape?

Answers

Answer:

Through the mirrror try breaking the mirror with the table, touch the mirror if u seen green people can see u through the other side but if it doesnt find a diff way.

Step-by-step explanation:

Hey guys please help me! Very appreciate it

Answers

Answer:

30.9

Step-by-step explanation:

.

What mistake did Francisca make?
1 point
Francisca is asked to solve the
following equation, Francisca's
work is shown below.
3.5 = ** - 1.5
3.5 = {* - 1,5
+1.5 + 1.5
5 = ***
---
It 풍
Francisca was supposed to add the 1/3, instead of subtracting by 1/3
Francisca was supposed to multiply by 3/1, instead of subtracting by 1/3
Francisca was supposed to divide by 1/3, instead of subtracting by 1/3

Answers

Answer:

Francisca was supposed to divide by 1/3, instead of subtracting by 1/3.

Step-by-step explanation:

She was completing the equation correctly until she subtracted 1/3 instead of dividing both sides. It should have been 5 divided by 1/3 or 15/3 divided by 1/3.

I hope this helps!

help please !! Given sin theta= 2/5
and 0°

Answers

Answer:

C

Step-by-step explanation:

sinθ=[tex]\frac{2}{5}[/tex]

θ=sin⁻¹ ( [tex]\frac{2}{5}[/tex] )

θ=23.57817848

2θ=47.15635696

sin2θ=sin(47.15635696)=0.7332121112°≈ ((4[tex]\sqrt{21}[/tex])/25)

plz helpppppppppppp me asap

Answers

Answer:

x = 11,  CD = 74, DE = 74, and CE = 37

Step-by-step explanation:

9x-25 = 6x+8

3x - 25 = 8

3x = 33

x = 11

CD = 9x - 25 = 99 - 25 = 74

DE = 6x+8 = 66 + 8 = 74

CE = 10x - 73 = 110 - 73 = 37

A school library has 160 DVDs in its collection. Given that 45% of the DVDs are about science and 40% are about history, how many of the DVDs are about other subjects?

Answers

Answer:

24 DVDs

Step-by-step explanation:

45% of 160 = 72

40% of 160 = 64

72+64=136

160-136=24

24 DVDs

Viktor deposits $4,300 in an account that
carns 6% interest compounded monthly.
How much is in the account after five years?

Answers

Answer:

Viktor will have $5,800 in his account after 5 years

Step-by-step explanation:

Compound Interest

It happens when interest in the next period is then earned on the principal sum plus previously accumulated interest.

The formula is:

[tex]\displaystyle A=P\left(1+{\frac {r}{n}}\right)^{nt}[/tex]

Where:

A = final amount

P = initial principal balance

r = interest rate

n = number of times interest applied per time period

t = number of time periods elapsed

Viktor deposits P=$4,300 in an account that earns r=6% interest compounded monthly. Since there are 12 months in a year, n=12. The interest rate is converted to decimal: r=6/100=0.06. The final amount in the account after t=5 years is:

[tex]\displaystyle A=\$4,300\left(1+{\frac {0.06}{12}}\right)^{12*5}[/tex]

[tex]\displaystyle A=\$4,300\left(1.005}\right)^{60}[/tex]

Calculating:

A = $5,800

Viktor will have $5,800 in his account after 5 years

dear algebra stop asking us to find your x don't ask y​

Answers

Answer:

PREACH

Step-by-step explanation:

that is so smart :)

Answer:

signed algebra

Step-by-step explanation:ok b

Which is a graph of y=3x-1
Please help me I’m very stuck?

Answers

Answer:

The 1st one

Step-by-step explanation:

Find the value of k,if 3x+ky-1=0,7x-3y+3=0 are perpendicular.

Answers

728282636381919191828273737363839038373637373

20098765432 plus 34567890

Answers

Answer: 20133333322

Step-by-step explanation: I just did it thx

Milan is riding on a bike course that is 40 miles long so far he has ridden 22 miles of the course what percentage of the course has Milan ridden so far

Answers

Answer:

55%

Step-by-step explanation:

Answer:

its yo mama

Step-by-step explanation:

8-4x+5y
When X=-2 y=6

Answers

Answer:

46

Step-by-step explanation:

=8-4x+5y

=8+8+30

=46

what is the original price when the discount is 25% and the sale price is $40

Answers

Answer:

the original price was $53.33

Step-by-step explanation:

$x ---- 100%

$40 ------- 75% (this is because 25% of it's just 75% of the actual price)

[tex]75\cdot x = 100\cdot 40\\\\75x = 4000\\\\x=53.33[/tex]

Answer:  53.33 dollars

===============================================

Work Shown:

x = original price

25% = 25/100 = 0.25

25% of x = 0.25x = discount, or amount saved

final price = (original price) - (discount)

final price = (x) - (0.25x)

final price = 0.75x

0.75x = 40

x = 40/0.75

x = 53.333333

x = 53.33

The original price is $53.33

The discount, or amount saved, is 0.25*x = 0.25*53.33 = 13.3325 = 13.33 dollars.

This means the sale price is 53.33 - 13.33 = 40

We can also see this through computing 0.75*x = 0.75*53.33 = 39.9975 = 40, which matches with the given sale price.

Note how I'm rounding to the nearest penny when needed.

CAN SOMEONE FIND "x" FOR ME PLZ :/

Answers

Answer:

Explanation:

So, since the arrow is pointing to a RIGHT angle, you have to know the right angle's degree is 90° so set up an equation.

11x - 9 = 90

Now you solve it. Here's a step by step:

11x - 9 = 90

Add nine to nine and ninety. Since the nine in this equation is negative, it'll cancel it out. Now here's what you have left to solve:

11x = 99

Divide -11 from 11 and 99.

x = 9

If you feel like you're wrong, fill it in!

11(9) - 9 = 90

11 x 9 = 99

99 - 9 = 90

There you go!

Please someone help me

Answers

Answer:

a) the height ...................Im not sure though .....................................

Step-by-step explanation:

.............................................

A model is made of an Airbus A300 aeroplane.
The length of the model is 36 cm.
The length of the real aeroplane is 54 m.

Answers

Answer:

Since the Airbus A300 model airplane was made to scale, measuring 36 centimeters, while the real airplane measures 54 meters, to determine the scale ratio between both planes, the following calculation must be performed:

36cm = 0.36m

0.36 = 1

54 = X

54 x 1 / 0.36 = X

150 = X

Therefore, the scale ratio between the model and the real plane is 150:1.

what is n in the equation 2(2n + 3)

Answers

Solve Using the Quadratic Formula n^2-2n-3=0
n
2

2
n

3
=
0
n
2
-
2
n
-
3
=
0

Answer:

n=-1.5 or  -3/2

Step-by-step explanation:

4n+6

4n=-6

n=-1.5 or  -3/2

Complete the proof.
help pls

Answers

Answer:

vertical, transitive, definition

Step-by-step explanation:

1 and 3 are vertical, as their opposite of each other

transitive means like if a = b and a =c then b = c

and a congruent to b means measure of angle a = measure of angle b

btw sugawara is cool

whats 41.803 rounded to the nearest whole number

Answers

41.803 is 42 rounded to the nearest whole number because when you go past .5 you round to the nearest highest number, but when your below .5 then you round to the nearest lowest number.

Answer: 41.803 rounded to the nearest whole number would be 42. Whenever you go over .5 you round to the nearest highest number. For example, 41.6 would also be rounded to 42.

The red sox play 118 games in 110 days what is their rate for games played to days?​

Answers

Answer:

= 1.072727 games per day

Step-by-step explanation:

This is a fraction equal to

118 games ÷ 110 days

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 110

118 games ÷ 110

110 days ÷ 110

=

1.072727 games

1 day

=

1.072727 games

day

= 1.072727 games per day

10 POINTS! WILL MARK BRAINLIEST!
What is the area of the trapezoid?

Answers

Answer:

93 cm.

Step-by-step explanation:


HELP IM BEGGING QUICKKKKKKKK

Answers

A 3x with an exponet of 3

F(x)=2x^3-5 is this a one to one function

Answers

Answer:

[tex]\boxed{\boxed{\pink{\sf Yes \ it\ is \ one\ to \ one \ function .}}}[/tex]

Step-by-step explanation:

A function is said to be be one-to-one ( injective) if every y-value has only one corresponding x-value. The given function is ,

[tex]\bf \implies f(x) = 2x^3-5\\\\\bf\implies y = 2x^3-5 [/tex]

Here I have made the graph of " Desoms Graphing calculator. "

Now ,on plotting its graph we see that every y-value has only one corresponding x-value . Hence , ihe given function is a injective function that is one to one function.

Hence the given function is one to one ( injective ) function.

Please answer 5 x (1/25)

Answers

Answer:

5/25 or simplified 1/5

Step-by-step explanation:

Answer:0.2

Step-by-step explanation:

Amy glued purple ribbon around the edge of her circular mirror she used 63 inches of ribbon this was just enough to go once around the mirror what is the approximate diameter of her mirror

Answers

Answer:

20in

Step-by-step explanation:

Answer: 20 inches

Step-by-step explanation:

the school band wants to make 1000 dollars at the annual car wash, if they charge 15 dollars per car, how many cars should the band wash

Answers

They should wash at least 67 cars. 1,000/15=66.6 so round up to 67.

Look at the pictures and solve. WILL GIVE BRAINIEST
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match each graph to the equation of its line.

Answers

Answer:

1. y = 4x - 4

2. y = x + 2

3. y = -2x - 4

4. y = -x + 2

Step-by-step explanation:

Slope-intercept form is y = mx+b. As we know, m is the slope and b is the y-intercept. We need to find the slope and y-intercept and put them in the equation. Slope is rise over run, so we just count up then over until we get to an intersection. For the y-intercept, we look where the line crosses the y-axis.

What is the surface area?​

Answers

Honestly I don’t even know the answer I tried sorry I couldn’t figure it out
First it’s your gonna need to find the area of the triangle.

Area of triangle = 1/2 base x height
= (1/2 15) x 20
= 7.5 x 20
= 150 m square

Then we are gonna multiply the area of the triangle by 2 because there are two triangles making up this object.

= 150 m square x 2
= 300 square

Then we are gonna find the area of the rectangles

Area of rectangle 1 = length x width
= 7 x 25
= 175 m square

Area of rectangle 2 = 7 x 20
= 140 m square

Area of rectangle 3 = 15 x 7
= 105 m square

Then your gonna add all the area of the rectangles.

= 175 + 140 + 105= 420 m square

Then we are gonna add both the area of the triangles and the area of the rectangles and that would conclude the surface area.

300 m square + 400 m square = 700 m square

Therefore the surface area is 700 m square

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