Systems of equations, solve by substitution please!
x + 7y = -37
4x - 3y = 7

Answers

Answer 1
Answer:

1. x = -37 - 7y

2. x = 7+3y/4


​​
Answer 2

Step-by-step explanation:

make the coefficients same

then if sign are same subtract the one you wanna cancel it then here it goes

lam gonna start making coefficient of x sam like this:

4.X+7y= -37

1.4X-3y=7

then i will subtract all x or cancel to each other then

4X+28y= -148

-

4X-3y=7

and then -×-=+

add all y

31y=141

y= 4.55 then we take one of the equation then substitute y to 4.55 so i chose first equation

X+7(4.55)=-37

X+31.85=-37

so take 31.85 to the side it will become -31.85

then X=-37-31.85

X=68.85

i hope that it will help you


Related Questions

Gabriel is deciding between two different movie streaming sites to subscribe to. Plan A costs $8 per month plus $2.50 per movie watched. Plan B costs $24 per month plus $0.50 per movie watched. Let AA represent the monthly cost of Plan A if Gabriel watches xx per month, and let BB represent the monthly cost of Plan B if Gabriel watches xx movies per month. Write an equation for each situation, in terms of x,x, and determine which plan would be cheaper if Gabriel plans on watching 6 movies each month

Answers

Answer:

A= 2.50x+82.50x+8

B= 0.50x+240.50x+24

Step-by-step explanation:

Plan A is $4 cheaper than Plan B when watching 6 movies.

8 + 4a I need an answer pronto this was the one part of math I was taught the least.
a=1/2

Answers

Answer:

Q.1 - 10

Q.2 - −54

Step-by-step explanation:


I’m only asking for #1

Answers

Answer:

3. 6

4. 9

5. 12

6. 15

Step-by-step explanation:

To adopt a dog from an animal shelter you must pay 80$ for vaccinations 65 to spay or neuter the dog and 50 for wellness exam

Answers

answer: 80 + 65 + 50 = x (x is the cost to adopt a pet)

x = 195
it is 195$ to adopt a dog.

In a certain​ chemical, the ratio of zinc to copper is 4 to 13. A jar of the chemical contains 286 of copper. How many grams of zinc does it​ contain?

Answers

Answer: It contains 88 g of zinc.

Step-by-step explanation:

Given: The ratio of zinc to copper is 4 to 13.

Ratio can be written as [tex]\dfrac4{13}[/tex]

A jar of the chemical contains 286 g of copper.

Let the quantity of zinc be x.

By using the direct proportion rule:[tex]\dfrac{x_1}{y_1}=\dfrac{x_2}{y_2}[/tex]

[tex]\dfrac{x}{286}=\dfrac{4}{13}\\\\ x=\dfrac{286\times4}{13}\\\\\Rightarrow\ x=88[/tex]

Hence,  It contains 88 g of zinc.

Which shows the pre-image of quadrilateral W'X'Y'Z' before the figure was rotated according to the rule (x, y) → (–x, –y)?

Answers

C

Image for proof, dude above got it first.

What is the binary number for 18​

Answers

Answer:

69

Step-by-step explanation:

Answer:

10010 that's the answer

If a florist uses 100 roses to make 5 identical flower arrangements, how many roses would the florist use to create 4 identical arrangements

Answers

Answer:

80 roses

Step-by-step explanation:

Divide 100 by 5 to find the unit rate, which is 20 roses for every flower arrangement. Multiply 20 by 4 to find how many roses the florist would use for 4 arrangements.

Which descriptions match the given transformations?

Drag and drop the answer into the boxes.

Answers

Answer:

f(z) is translated 3.5 units left.

ANSWER PLEASE FOR ME

Answers

They made a mistake in step 2 because it should had been (x+6) = 0, and (x-2) =0

Congruent Triangle Combination

Answers

Answer:

1) ΔABC ≅ ΔDBC by Side-Angle-Side (SAS)

2) ΔABC ≅ ΔCDB by Side-Side-Side (SSS)

3) ΔABC ≅ ΔDBE by Angle-Angle-Side (AAS)

4) m∠Y = 53°

5) y = 3

6) ΔABC ≅ ΔEDC by Side-Angle-Side (SAS)

7) ΔABC ≅ ΔADC by Angle-Angle-Side (AAS)

8) ΔABC ≅ ΔADC by Side-Angle-Side (SSS)

Step-by-step explanation:

1) Side AC ≅ Side BD      [tex]{}[/tex]        given

Side BC ≅ Side BC      [tex]{}[/tex]            reflexive property

∠DBC ≅ ∠ACB                [tex]{}[/tex]        given

Therefore ΔABC ≅ ΔDBC by Side-Angle-Side (SAS)

2) Side AC ≅ Side BD      [tex]{}[/tex]        given

Side DC ≅ Side BA      [tex]{}[/tex]            given

Side BC ≅ Side BC      [tex]{}[/tex]            reflexive property

Therefore, ΔABC ≅ ΔCDB by Side-Side-Side (SSS)

3) ∠BAC ≅ ∠DEB                [tex]{}[/tex]        given

Side BC ≅ Side BD      [tex]{}[/tex]               given

∠ABC ≅ ∠DBE                [tex]{}[/tex]            vertically opposite angles

Therefore, ΔABC ≅ ΔDBE by Angle-Angle-Side (AAS)

4) ΔXYZ ≅ ΔABC                [tex]{}[/tex]        given

m∠A = 44°, and m∠C = 83°

m∠B = 180 - (44 + 83) = 53°                [tex]{}[/tex]   Sum of angles in a triangle

m∠Y = m∠B = 53°                [tex]{}[/tex]   Corresponding Parts of Congruent Triangles are Congruent (CPCTC)

5) Given that Triangle GHK is congruent to Triangle TZK

GH ≅ XT, KG ≅ KT, and HK ≅ ZK by the definition of congruency

Therefore, GH = 4 = XT = 3y - 2

4 = 3y - 2

3y - 2 = 4

3y = 4 + 2 = 6

y = 6/2 = 3

y = 3

6) Side BC ≅ Side EC      [tex]{}[/tex]           given

Side AC ≅ Side DC      [tex]{}[/tex]              given

∠ACB ≅ ∠DCE                [tex]{}[/tex]            vertically opposite angles

Therefore, ΔABC ≅ ΔEDC by Side-Angle-Side (SAS)

7) ∠BAC ≅ ∠DAC                [tex]{}[/tex]        given

∠ADC ≅ ∠ABC                [tex]{}[/tex]            given

Side AC ≅ Side AC      [tex]{}[/tex]               reflexive property

Therefore, ΔABC ≅ ΔADC by Angle-Angle-Side (AAS)

8) Side AD ≅ Side BC      [tex]{}[/tex]           given

Side AC ≅ Side AC      [tex]{}[/tex]               reflexive property

Side AB ≅ Side DC      [tex]{}[/tex]                given that the included angle between the two legs side AD and side AC and side AC and side BC are both acute, the third sides side AB and side DC are equal

Therefore, ΔABC ≅ ΔADC by Side-Angle-Side (SSS)

Please help helpppppppppp it’s 7to10

Answers

Answer:

whats the question? 7to10 is not enough info for me

Step-by-step explanation:

Answer:

what's the question...

PLEASEE HELP.!! ILL GIVE BRAINLIEST.!! *EXTRA POINTS* DONT SKIP:((

Answers

Answer:

-12

Step-by-step explanation:

Each dash is +-4

Find the sales tax. Then find the total cost of the item. Sales Tax Selling Price Rate of Sales Tax Sales Tax ​$80.00 6​% ​?

Answers

Answer:

sales Tax = 4.8

total cost = 84.8

Step-by-step explanation:

80.00 * 6%​ = 80.00 * 0.06​ = 4.8

Answer:

Sales tax: 4.80 Total costs: 84.80

Step-by-step explanation:

Price x sales tax rate = sales tax

80 x .06(6%) = 4.80

price + sales tax = total costs

80 + 4.80 = 84.80

15.2·0.25−48.51÷14.7/x = ( 13/44 − 2/11 − 5/66 ÷2 1/2 )·1 1/5 / 3.2+0.8·(5 1/2 −3.25)
Plz answer soon. I need it urgently. Need by today. Will give 15 points.

Answers

Answer:

x = 25

Step-by-step explanation:

15.2 * 0.25 - 48.51 ÷ 14.7 = 76/5 * 1/4 - 3.3 = 3.8 - 3.3 = 0.5

(13/44 - 2/11 - 5/66 ÷ 2 1/2) * 1 1/5 = (13/44 - 8/44 - 5/66 * 2/5) * 6/5 =           (15/132 - 4/132) * 6/5 = 11/132 * 6/5 = 1/12 * 6/5 = 1/10

3.2 + 0.8 * (5 1/2 - 3.25) = 3.2 + 4/5 * (22/4 - 13/4) = 3.2 + 9/5 = 3.2 + 2.8 = 5

So after doing all this simplifying and stuff we get 0.5/x = 0.1/5. Using the butterfly method the result is 0.1x = 2.5, multiply both sides by 10 and you get x = 25!! Yayy lol

Is the ratio 4 to 7 the same as 7 to 4 ?

Answers

Answer:

uhhhhh Expressed as a fraction, with the numerator equal to the first quantity and the denominator equal to the second, the answer would be 7/4. Two other ways of writing the ratio are 7 to 4, and 7:4.

Step-by-step explanation:

just math

Answer:

Yes because it doesn´t matter how you write a ratio

Step-by-step explanation:

Because it doesn´t matter how you write a ratio

Please anwser the 3 questions above I will mark brainiest!!!! Pretty please!

Answers

Answer:

1. the first one

2. the third one

3. the third one

Step-by-step explanation:

pls help meh

solve equation:
5199x=399x
x both have to be the same number and they have to equal

Answers

The only solution here would be x=0. Multiplying 0 to both sides results in 0=0 which is technically correct.

Answer:

x=0

Step-by-step explanation:

i googled it

You purchased a computer for your business for $800 using straight line depreciation, the amount of depreciation allowed for each year after the purchase is given by the function f(x)= 800-114.29X what type of function can you used to model the data?

Answers

Answer:

this is a linear function

Step-by-step explanation:

y = a + bx

in this case:

y = 800 - 114.29x

where:

y = accumulated depreciation

x = number of years

year     accumulated          

(x)         depreciation (y)      

0          0                      

1          114.29              

2          228.58                  

3          342.87                

4          457.16                  

5          571.45                  

6          685.74                  

7          800                

Solve for x: 8(3x-6)=6(4x+8)

Answers

Answer: there are no values of x that make the equation true .

So the answer is there is: No solution

Step-by-step explanation:

Write an equation in the form that makes the most sense for the information given. Since the beginning of fall, the little tree in front of Mrs. Wenger's house loses 12 more leaves everyday. After 5 days, it had only 208 leaves remaining.

Answers

Answer:

0 = 208 - 12x

Step-by-step explanation:

Since after 5 days the tree only had 208 leaves remaining, assuming that the rate of decay is constant, we can use the following equation to calculate the total number of days (starting at the 5-day mark as 0) until the tree loses all of its leaves. In this equation, the total number of days is represented by the variable x.

0 = 208 - 12x

Now that we have the equation we can solve it...

0 = 208 - 12x ... subtract 208 on both sides

-208 =  -12x   ... divide both sides by -12

17.33 = x

Finally, we can see that after 18 days (not 17.33 because we are counting full days) the tree will have lost all of its leaves.

Of the smoothie sold yesterday at Isaac's smoothie shop 1/4 we're banana and another 2/3 were strawberry What fraction of smoothies were either banana strawberry?

Answers

Answer:

11/12

Step-by-step explanation:

Fraction of smoothie that is Banana = 1/4

Fraction of smoothie that is strawberry = 2/3

The fraction of smoothies that were either banana or strawberry

= 1/4 + 2/3

Least Common Denominator= 12

= (3 × 1 + 2 × 4)/12

= 3 + 8/12

= 11/12

The fraction of smoothies were either banana or strawberry is 11/12

A box contains 300 raffle tickets. Only 15 tickets are winning tickets. What is the
probability the first ticket drawn at random from the box is a winning ticket?

Answers

Answer:

5%

Step-by-step explanation:

15/300 = 0.05

5%

In a parking lot with 600 Japanese, European and American cars, 50% are American. There are 30 fewer Japanese cars than American cars . How many more Japanese cars are there than European cars?

Answers

The answer would be 10

A 5-foot piece of aluminium wire costs $21.00. What is the price per inch?

Answers

The answer would be .35 cent.

Answer:

The price per inch is $0.35

Step-by-step explanation:

First you have to convert 5 feet into inches.

5·12= 60.

Then, divide the 21 by 60.

21/60 = 0.35

In conclusion, it costs $0.35 per inch.

the first answer gets brainliest whether it's right or wrong :)

Answers

Answer:

1 :)

Step-by-step explanation:

8 x 7=56

7 x 1=7

7) Norachai spent $13 on a magazine and some erasers. If the
magazine cost $4 and each eraser cost $3 then how many erasers did
he buy?

Answers

Answer:

3

Step-by-step explanation:

Magazine $4

13-4=9

9/3=3

3 erasers and 1 magazine

A submarine dives below the surface, heading downward in five moves. If each move downward was 200 feet, where is the submarine after it is finished diving?

Answers

Given:

A submarine dives below the surface, heading downward in 5 moves.

Each move downward = 200 feet

To find:

The location of submarine after it is finished diving.

Solution:

According to the question,

1 move downward = 200 feet

5 move downward = 5 × 200 feet

                               = 1000 feet

Since, the submarine heading downward in 5 moves, therefore the submarine is 1000 feet downward after it is finished diving.

Can someone please solve number 2 ! I would literally love you forever !!!!

Answers

Answer:

sorry i wish i knew how but i would like to give you aomething other than an answer for your question and i hope this is ok.

Step-by-step explanation:

every day is a new day and a new opportunity to change the world no matter how BIG or how small.  even if you make mistakes. always remember this though. whatever you put into the world, whether it be good or bad, it will always come back three times.

meaning that when you do something good something three times as good will happen to you. The same is so for bad except it would be 3 times as bad as will happen to you.   I hope your day is great and may you do many great things.

Chang knows one side of a triangle is 13 cm. Which set of two sides is possible for the lengths of the other two
sides of this triangle?
O 5 cm and 8 cm
O 6 cm and 7 cm
0.7 cm and 2 cm
O 8 cm and 9 cm

Answers

Answer:

8cm and 9cm

Step-by-step explanation:

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