{6x+5y=4
{6x-7y=-20
solve by elimination

Answers

Answer 1

Answer:

x = -1, y = 2

Step-by-step explanation:

6x + 5y = 4

6x - 7y = -20

We already have a similar leading coefficient (6 for X), so we just subtract equation 1 from equation 2 to get:

12y = 24

Now solve normally:

y = 2

Then substitute into the first equation (or second, it doesn't matter)

6x + 10 = 4

6x = -6

x = -1


Related Questions

Which algebraic expression is equivalent to this expression?
6(22 - 12) + 63
Help me please!!

Answers

The numerical value of this algebraic expression is 123

Step-by-step explanation:

To solve this algebraic expression, we're going to subtract the numbers indicated in parentheses, and finally, we're going to multiply and add the numbers.

Resolution:

[tex]\large \sf =6(22 - 12) + 63[/tex]

[tex]\large \sf =6(10) + 63[/tex]

[tex]\large \sf =60 + 63[/tex]

[tex]\boxed{\boxed{{\large \sf 123}}}[/tex]

Therefore, we can conclude that the numeric value of this expression will be 123

Prove <5 is supplementary to <6 using theorems.

Answers

Answer:

Theorem 10.5: If two parallel lines are cut by a transversal, then the exterior angles on the same side of the transversal are supplementary angles.

At Cheng's Bike Rentals, it costs $24 to rent a bike for 5 hours. How many dollars does it cost per hour of bike use?

Answers

Answer: $4.80

Step-by-step explanation:

24/5 = 4.8

$4.80

What's the negative reciprocal of 5? Question 12 options: A) 1∕5 B) –5 C) –1∕5 D) 5

Answers

Answer:

[tex]\huge\boxed{C)\ -\dfrac{1}{5}}[/tex]

Step-by-step explanation:

The reciprocal of 5: [tex]\dfrac{1}{5}[/tex]

The negative reciprocal of 5: [tex]-\dfrac{1}{5}[/tex]

Fill in the missing
numbers?
?•(-10) = 90

Answers

Answer:

?=-9

Step-by-step explanation:

A negative x negative is positive. 90/10=9 and mutiply both by -1. -10x-9=-90

A construction crew needs to pave a road that is 207 miles long. The crew paves 8 miles of the road each day. The length, L (in miles), that is left to be paved after d days is given by the following function. L(d) = 207–8d Answer the following questions. (a) IF 143 miles of the road is left to be paved, how many days has the crew been paving the road? E 1 days (b) How many miles of the road does the crew have left to pave after 13 days? ​

Answers

Answer:

8: 207

x: 143

and solve that to get your answer

The required answers are-

(a) The crew been paving the road for 8 days.

(b) 103 miles of the road have left for the crew to pave after 13 days.

What is an equation?

In mathematics, an equation is a formula that expresses the equality of two expressions by connecting them with the equal sign = .

The given equation to pave a road is,

L(d) = 207– 8d

where, length, L (in miles), and d days.

(a) For 143 miles of the road is left to be paved, the number of days is given as-

Put Length L(d) = 143 in the equation to pave a road

we get,

143 = 207– 8d

or, 8d  = 207– 143

or, 8d  = 64

or, d  = 64/8

⇒ d  = 8 days

So, The crew have been paving the road for 8 days.

(b) miles of the road have left for the crew to pave after 13 days.

Put d = 13 days in the equation to pave a road

we get,

L(d) = 207– 8*13

or, L(d) = 207– 104

⇒  L(d) = 103 miles

So,103 miles of the road have left for the crew to pave after 13 days.

Thus,The required answers are-

(a) The crew have been paving the road for 8 days.

(b) 103 miles of the road have left for the crew to pave after 13 days.

To learn more about roads:

brainly.com/question/1196760

#SPJ2

Could I get help on this?

Answers

Answer:

returning the collateral

NOT SURE HELPP... it's a khan academy question

Answers

Answer:

36.87

Step-by-step explanation:

Sine rules says:

. sin x = opposite / hypotenuse

We just substitute in the values

. sin x = 3 / 5

. sin x = 0.6

Now we use sin inverse to find the value of the angle

. x = sin^-1(0.6) = 36.87

[tex]\sin \angle A = \dfrac{3}{5} \\\\\implies \angle A = \sin^{-1} \left( \dfrac 35 \right) = 36.87^{\circ}[/tex]

How would I write 129.701 in expanded form

Answers

100+20+9+0.7+0.1 i think goodluck

Pls answer will give brainiest

Answers

Answer:

D. is your answer

What is tan(50)?


-.57


5.88


2.36


1.19

Answers

Answer:

1.19

Step-by-step explanation:

tan 50 degrees is the value of tangent trigonometric function for an angle equal to 50 degrees .. the value of 50 degrees is approximately 1.1918

HELP PLEASE
What is (are) the x intercept(s) of the function graphed above?
-4
-14 and 4.5
-5,1, and 4
-4, -1 and 5

Answers

Answer:

-4, -1, and 5

Step-by-step explanation:

1. The x-intercepts of a function is where the function intersects with the x-axis.

2. Given the information above, we can see that the function intersects the x-axis at (-4,0), (-1,0), and (5,0).

This means that the x-intercepts are -4, -1, and 5.

Simplify.
1) 448
A) 5V3
C) 12V2
B) 8V
D) 10v2

Answers

Answer:

B

Step-by-step explanation:

The square root of 448 rounded up to 6 decimal places is 21.166010. It is the positive solution of the equation x2 = 448. We can express the square root of 448 in its lowest radical form as 8 √7.

Question 8 of 10
The blue segment below is a radius of 0. What is the length of the diameter
of the circle?
A. 6.35 units
B. 25.4 units
o
12.7
C. 19.05 units
OD. 12.7 units

Answers

Step-by-step explanation:

the diameter is 2 times the radius.

so,

12.7×2 = 25.4

so, B is right.

The perimeter of the smallest square is 48 feet. What is the perimeter of the largest square?

Answers

Answer:

x > 48

Step-by-step explanation:

There’s nothing told to us or showed to us to answer It So I was only able to answer it with an inequality :(((

sorry if this didn’t help but once again… not enough information :(

Solve equation by applying the distributive property to simplify both sides of the equation if needed

4(w-9)=w+9

Answers

Answer:

w=15

Step-by-step explanation:

4w-36=w+9

3w=45

w=15

Answer:

15

Step-by-step explanation:

The distributive property applies to the expression on the left hand side. It means that the multiplication of 4 is distributed to all the terms in the brackets.

[tex]4(w-9) = w + 9\\4w-36 = w + 9\\4w-w = 9 + 36\\3w = 45\\w = 15[/tex]

Please take a look at the picture

Answers

Answer:

B) -3/10 x -6

Step-by-step explanation:

-3/10 x -6=-3 x -6/10

When multiplying two negatives you get a positive.

Hope this helps :)

If an item is $6.49 for 36 ounces, then it is $

Answers

Answer:

0.18

Step-by-step explanation:

0.18


Do it step by step

PLS ANSWER FAST!!

Write an equation of the line with a slope of 3 and a y-intercept of -7 .

Answers

Answer:

y = 3x - 7

Step-by-step explanation:

For an equation in the format y = ax + b, a is the slope and b is the y intercept.

helpppp pleaseeeee✋​

Answers

Answer:

5 x 3 = 15 / 4 x 8 = 32 / 6 x 1.5 = 9

Step-by-step explanation:

Answer:3,8,3/2

Step-by-step explanation:

1) 5*x=15

X=15/5=3

2) 4*x=32

X=32/4=8

3)

6*x=9

X=9/6=3/2

What is
[tex] \frac{4}{60} [/tex]
simplified?​

Answers

Answer:

1/15

Step-by-step explanation:

4/60

Divide the top and bottom by 4

4/4 =1

60/4= 15

1/15

-15(-4)
pls solve, this is page 237 in 7th grade math book, problem 2

Answers

The answer is -19!

Hope this helps! :)

Answer: 60

Step-by-step explanation:

The negatives cancel each other out and you are left with 15 times 4

Assume each choice is random and equally likely. What is the probability that someone gets a bowl of ice cream, with two scoops of vanilla?

Answers

Answer:

1/4

Step-by-step explanation:

Solution: as shown in the figure,

2/8 = 1/4

Answer:

3

Step-by-step explanation:

i thing

PLEASE HELPPP!! I need help with both questions

Answers

9514 1404 393

Answer:

borrow: $21,056.60interest: $1,983.40

Step-by-step explanation:

The relation between the monthly payment (A) and the principal borrowed (P) is ...

  A = P(r/12)/(1 -(1 +r/12)^-n)

where the annual interest rate is r and n is the number of monthly payments.

Then the principal P can be found as ...

  P = $384(12/0.036)(1 -(1 +0.036/12)^-60) ≈ $21,056.60 . . . loan amount

The sum of payments is ...

  $384 × 60 = $23,040.

The difference between the payments made and the loan principal amount is the interest paid:

  $23,040.00 -21,056.60 = $1,983.40 . . . total interest

Please help me help please please help me please

Answers

Answer:

y = 3x + 1 is the answer

Hello there! :)

The slope of this line is 3.

There are lots of ways to calculate the slope.

Here's one of them:

Rise/Run

Here, the rise is 3 (we move up 3 units)

And the run is 1 (we move 1 unit to the right)

3/1=3

So the slope is 3.

Now, the y-intercept is where the graph touches the y-axis.

Here, the y-intercept is 1.

So the equation is

y=3x+1

Hope this helps!

~Just a determined gal

#CarryOnLearning

Please mark brainliest!

[tex]MysteriousNature :)[/tex]

This is the architectural plan for a fenced-in garden.
The shaded region represents an area for trees.
How long is the fence around the edge of the garden?
(Do not include the edge around the tree region.)

Answers

The fence around the edge of the garden is 17.86 m long.

The fence around the edge of the garden is the perimeter of the quarter circle. That is the length of the arc plus the two radii.

Since the radius is 5 units long, its length r = 5 m.

The length of the arc L = rθ where r = radius of quarter circle = 5 m and θ = angle subtended by the arc in radians = π/2 (90°)

So, the length of the fence L' = L + r + r

L' = L + 2r

L' = rθ + 2r

L' = r(θ + 2)

Substituting the values of the varaibles into the equation, we have

L' = r(θ + 2)

L' = 5 m(π/2 + 2)

L' = 5 m(1.571 + 2)

L' = 5 m × 3.571

L' = 17.855 m

L' ≅ 17.86 m

So, the fence around the edge of the garden is 17.86 m long.

Learn more about length of a fence here:

https://brainly.com/question/11978566

Jacob saw a model of a building that will be built in his city. The model has a height of 40 centimeters and will be built to a scale of 1:50. What is the actual height of the building? (1 m = 100 cm)

Answers

Answer:

20 m

Step-by-step explanation:

1/50 = 40/x

Cross multiply.

1 × x = 50 × 40

x = 2000

2000 cm × (1 m)/(100 cm) = 20 m

Answer: 20 m

Who is the general information of acounting

Answers

Answer:

General accounting essentially refers to general ledger collection and accounting activities that include account charges in credits and debits and documenting financial statements for a quarter, calendar or fiscal year.

2950 divided by 67 in partial quotints

Answers

Answer:

Math answers to fraction 2950 divided by 67 can be calculated as follows.

2950/67 math problems division = 44.0298507463. Therefore 44.0298507463 to 2 decimal places= 44.03

2950/67 divided by 2 » (2950/67) ÷ 2 » 44.0298507463 ÷ 2 = 22.0149253731 . Check 2950/67 long division below

Step-by-step explanation:

Please help! (Urgent)
Only answer if correct.

I will be asking more so stay tuned.

Answers

Answer:

Number of rotations: 5

Slope: 1/2

Step-by-step explanation:

Answer: why did you ask twice for the same problem

Step-by-step explanation:

Other Questions
1aCCopper(II) nitrate decomposes on heating. The reaction is endothermic.2Cu(NO),(s) 2CuO(s) + 4NO2(g) + 0,(9)Sketch a reaction pathway diagram for this reaction to include theactivation energy[3]b Draw an energy cycle to calculate the standard enthalpy change forthis reaction, using enthalpy changes of formation.[3]Calculate the enthalpy change for this reaction using the followingenthalpy changes of formation.AH, [Cu(NO, ),(s)] = -302.9 kJ mol-'AH, [CuO(s)] =-157.3 kJ mol-!AH [NO,(g)] = +33.2 kJ mol-![3]d Copper(II) sulfate is soluble in water. A student dissolved 25.0 g ofcopper(II) sulfate in 100 cm of water in a polystyrene beaker stirringall the time. The temperature of the water fell by 2.9 C.i Calculate the enthalpy change of solution of copper(II) sulfate.(specific heat capacity of water = 4.18 Jg1 C ; relativemolecular mass of copper(II) sulfate = 249.7 g mol-')[3]ii Suggest one source of error in this experiment and explain howthe error affects the results.[2][Total: 14] que es la sequia ....................................................................... 6. A 15.53 kg bag of soil falls 5.50 m at a construction site. If all the energy is retained by the soil in the bag, how much will its temperature increase Find the value of z.73ZZ =[? please help what is #4? All 5-digit zip codes in the United States are assigned by region. In Texas, all zip codes beginwith the number 7 while the second digit is restricted to numbers from 5 to 9. There is norestriction on the remaining digits. How many zip code combinations are possible in Texas?4,0005, 0006, 0007,000 What is the average rate of change of the function f(x)=120(0. 1)x from x = 0 to x = 2? Enter your answer, as a decimal, in the box. Do not round your answer. Marketing is Significant for Both Profit and Non-Profit OrganizationsDo you agree with this statement? Explain Achemist is studying an unknown substance and could break the substance into its elemental components only by usingchemical means? How much interest will the account have earned when Mary takes out all the money on her 21st birthday WILL MARK BRAINLIEST!!(History of the Holocaust) What reason did Ella Lingens give for the inaction of most local Polish citizens around Auschwitz? A) They were also prejudiced against the Jews.B) They were making money off free slave labor.C)They did not know what was happening. D) They were afraid to speak up for the Jews. A line with a slope of -6 passes through the point (-8, -3). What is its equation in point-slope form?Use the specified point in your equation. Write your answer using integers, proper fractions,and improper fractions. Simplify all fractions. A cafeteria started with 50 lunches and served 15 per hours whats the equation? How is the gametophyte stage in gymnosperms different from the gametophyte stage of mosses Will give brain list How is a crime different from a Fiolation of a moral code A countertop is 13 feet long and 2 feet wide.What is the area of the countertop in square meters? Use the conversion 1 foot = 0.305 meter. Round your final answer to 2 decimal places. The temperature of a substance in an experiment changes by 8.7F from 10 am to 1p.m. At 5p.m., the temperature is 33.5F. Itis 2/3 of what the temperature was at 1p.m.What was the temperature at 10 a.m. of the substance?Enter your answer as a decimal in the box What were Austrias aims and priorities at the congress Fill in the blanks with the following words: Tour Eiffel, Monet, tudiants, impressionniste, universit, haute, muse. Marie est Charles sont deux (blank) la Sorbonne. Cest une clbre (blank) Paris. Ils ont visit la (blank) qui est trs (blank) (300 mtres). Le (blank) de lOrangerie possde un trs beau tableau de (blank) qui est un peintre (blank).SOMEBODY PLEASE HELP WITH THIS !!! 2. Find the value of x. Give your answer insimplest radical form.20 16