Does anyone know how to
Solve the system of equations.



​ −3x+y=2
7x−8y=1

Answers

Answer 1
you could use the substitution method. in this you’ll solve one equation for one variable. we’ll do the first one for y.
add 3x to both sides, so y = 3x + 2
then add that into the other equation for y.
7x - 8(3x +2) = 1
7x- 24x - 16 = 1
-17x - 16 = 1
-17x = 17
x= -1
now that you know what x is, you can find out y with the equation we made earlier. y = 3x+2
y = 3(-1) + 2
y = -3 + 2
y = -1

Related Questions

Determine the area of the
12 in
9 in
11 in
18 in
"etermine the area of the following

Answers

Answer:

21,384 all you have to do is multiply all of the numbers to find out area

Please I need your help

Answers

Answer:

A is 2/4 and 4/8

B is 2/8

C is 6/8

Step-by-step explanation:

Hope it helps

Madison and Declan are training for a lifeguard test Madison swims 2/5 mile in 3/8 hour. Declan swims 7/10 mile in 1/5 hour who swims faster

Answers

Answer:

Declan!

Step-by-step explanation:

V(Madison)=S/t=2/5÷3/8=16/15 mile/hour

V(Declan)=7/10÷1/5=7/2 mile/hour

16/15 < 7/2

a room is 15ft x 17ft and is 10 ft tall. if you were going to paint all four walls, with one coats of paint, how many square feet would you have to cover. if a gallon of paint covered 800 sq feet, how many gallons of paint would you have to buy?

Answers

Answer:

15 x 17 x 10 ft = __

Step-by-step explanation:

MMultiply the numbers and divided by 800. That should lead you! :D

I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER

Answers

Answer:

x = 25,

Step-by-step explanation:

(4x + 3) + (2x + 27) = 180 (Told they were a linear pair) (supplementary)

6x +30 = 180 (Combine like terms)

6x = 150 (Subtract 30 from both sides)

x = 25 (Divide both sides by 6)

m<RQS = 4(25) + 3

= 103 degrees

m<TQS = 2(25) + 27

= 77 degrees

Hope this helps

if x+y= -10 and x-y=2 what is the value of x

Answers

Answer:

X+Y=10, X-Y=2, what is X, Y?

Answer: x=6 and y=4

Explanation:

Given:

x+y=10 ⟶(i)

x−y=2 ⟶(ii)

From equation (ii) ,

x=2+y

Put value of x in equation (i) ,

2+y+y=10

2+2y=10

2(1+y)=10

1+y=102

1+y=5

y=5−1

y=4

Put value of y in equation (ii) ,

x−4=2

x=2+4

x=6

x + y = 10 → Eq A

x – y = 2 → Eq B

Now we will take out the expression of x from Eq A.

x + y = 10 Eq A

x = 10 – y → Expression of x

Now put the expression of x in Eq B.

x – y = 2

( 10 – y ) – y = 2

10 – 2y = 2

10 – 2 = 2y

8 = 2y

y = 8 / 2

y = 4

Now put the value of y in expression of x.

x = 10 – y

x = 10 – 4

x = 6

So, x = 6 and y = 4.

Thank you.

Hope it helps and you like it

x + y = - 10 (equation 1)

x - y = 2 (equation 2)

using equation 2 we get x = 2 + y

putting the value of x in equation 1 we get :

(2 + y) + y = - 10

2 y = -10-2

2 y = -12

y = -6

put the value of y in any equation

to get the value of x

x - y = 2

x - (-6) = 2

x + 6 = 2

x = -4

find the mean absolute deviation of the set of data

1,4,7,8,10

Answers

Answer: MAD= 2.8

Step-by-step explanation: start by finding the mean of the data set. find the sum of the data values, and divide the sum by the number of data values.

PLEASE HELP ILL GIVE BRAINLIESTTTTTT

Answers

Answer: 1 (90) 2 ( 112 ) 3 (180)

Step-by-step explanation:

i will give you the top answer and you get 50 points only if you answer this two questions!!

Answers

Answer:

The answer c for the first one The second answer is b

Step-by-step explanation:

Answer:

c and b is actuallt correct

Step-by-step explanation:

Please help me I am so bad at math

Answers

(f ◦ g)(x) is the composition of f(x) with g(x), equivalently

(f ◦ g)(x) = f(g(x))

To get f(g(x)), replace every instance of x in the definition of f(x) with g(x):

f(x) = -x + 7   ⇒   f(g(x)) = f(√(x - 3)) = -√(x - 3) + 7

What is the sum of the measures of ∠1 and ∠2?

What is the sum of the measures of Angle1 and Angle2?


mAngle1 + mAngle2 =

Answers

Answer:

131

Step-by-step explanation:

Done assignment on engine

Answer:

131

Step-by-step explanation:

edge

If there are 60 fruits in all and 42 of them are lemons what percentage are the lemons

Answers

Answer:

70% of the fruits are lemons

Step-by-step explanation:

I divided 100 by 60, and then multiplied that number by 42;) Have a blessed day!

Answer:

70%

Step-by-step explanation:

put into a fraction:

42/60

Divide:

42/60=0.7

Convert:

0.7=70%

Match each logarithmic equation to its corresponding x-value.
=
5
log, t = 5
log, I = 1
=
= 4
log
1,000
16
625
3
log10+ = 3
32
1084*
= 2
>
A>
1
&

Answers

Answer:

please check photos for explanation.

The correct matches are:

32 corresponds to log₂(x) = 5

3 corresponds to log₃(x) = 1

1,000 corresponds to log₁₀ (x) = 3

625 corresponds to log₅(x) = 4

16 corresponds to log₄(x) = 2

What is Logarithm?

A logarithm is a mathematical function that represents the exponent to which a specific base must be raised to obtain a given number. In other words, it is the inverse operation of exponentiation.

The logarithm of a number x to a given base b is denoted as log_b(x), where b is the base and x is the number. It represents the power to which the base must be raised to obtain the value x.

The logarithmic equations and their corresponding x-values are as follows:

log₂(x) = 5 → x = 32

log₃(x) = 1 → x = 3

log₁₀(x) = 3 → x = 1,000

log₅(x) = 4 → x = 625

log₄(x) = 2 → x = 16

So, the correct matches are:

32 corresponds to log₂(x) = 5

3 corresponds to log₃(x) = 1

1,000 corresponds to log₁₀ (x) = 3

625 corresponds to log₅(x) = 4

16 corresponds to log₄(x) = 2

Learn more about Logarithm here:

https://brainly.com/question/30226560

#SPJ7

there are 4,325 players in a chess tournament. In each round, half the players are eliminated. what function can be used to find the number of players remaining in the tournament at the end of x rounds?

Answers

Sounds like Squid Game lol

4325=2x

Hope it helps!

What is a typical age (the mean) for the people who were at Movie A?

Answers

It is 39

Because you have to count the little dots all the way till it is around the most age.

solve for x ~
[tex]x {}^{2} - 5x + 6 = 0[/tex]



thankyou ~​

Answers

Answer:

x = 2 or x = 3

Step-by-step explanation:

x² - 5x + 6 = 0

x² - (3 + 2)x + 6 = 0

x² - 3x - 2x + 6 = 0

x(x-3) - 2(x - 3) = 0

(x - 3)(x -2) = 0

Either,

x - 3 = 0

x = 3

Or,

x - 2 = 0

x = 2

ANSWER

______________________

factor x² - 5x + 6

[tex] \small\tt \color{black}{(x−3)(x−2)=0}[/tex]

_______________________

SOLVING FOR X

[tex] \small\tt \color{black}{x=3,2}[/tex]

#Brainly

Rebecca is saving money to purchase a laptop which cost $1,099.51 she has already saved $354.20 and plans to continue saving $50.60 per week which inequality could be used to find W the number of weeks of Rebecca must save in order to purchase a laptop ​

Answers

Answer:

745.31+50.60w=1,099.51

W=7

Step-by-step explanation:

1st subtract 1099.51 from 354.20

2nd use your answer which is 745.31 and add that with how much she plans on saving for how ever long

3d to find out how many weeks which is 50.60*w you need to first minus 745.31 from both sides

4th so 745.31- 745.31 and 1099.51-745.31 =354.2 or .20

5th divide 354.2 by 50.60 =7

So overall w= 7

please fast answer guys are in doing correct answer guys

multiply 998752×15
divide 22 table 15253435
add 22222+89997+45567+10130
sub 99999-45678​

Answers

Answer:

i think that to many but the answer is 5

Step-by-step explanation:

qwerty


In the morning, the trip odometer in Mr. Chin's car read 47 miles. At the end of the day, the trip odometer read 114 miles. How
many miles did Mr. Chin drive that day?

Answers

Answer:

67 miles

Explanation:

initial reading: 47 milesfinal reading: 114 miles

miles travelled:

final reading - initial reading114 - 4767 miles

Answer:

67 miles

Step-by-step explanation:

An odometer measures the distance traveled by a vehicle.

To calculate the number of miles Mr Chin drove that day, subtract the reading of the odometer at the start of the day from the reading of the odometer at the end of the day.

Given information:

Starting odometer reading = 47 milesEnding odometer reading = 114 miles

⇒ Number of miles driven = 114 - 47

                                            = 67 miles

Identify which one of the following is a formula unit:NaCl,H2O,HCl,HNO3

Answers

Based on the definition of the formula unit, the only one that is an example of this concept is NaCl.

What is a formula unit?

In chemistry, this concept refers to the representation of an ionic compound. This formula differs from others because it displays the lowest possible ratio in which the ions have the same charges and therefore the compound is neutral.

What is one example of this formula?

A classical example of this concept is NaCl because this includes a cation (positively charged) and an anion (negatively charged). Moreover, in this formula, the compound shows the lowest possible ratio between the two elements.

Learn more about compounds in: https://brainly.com/question/13516179

CAN SOMEBODY HELP ME PLEASE
NO LINKS

Answers

Answer:

  (-∞, ∞)

Step-by-step explanation:

The domain of a function is the set of values of the independent variable for which the function is defined. On a graph, it is the horizontal extent of the graph.

The domain of any polynomial function is "all real numbers." There are no values of x for which f(x) is undefined.

In interval notation, the domain is ...

  (-∞, ∞)

Do the angle measurements 70, 90, 75 make a triangle?

Answers

Answer:

Yes.

Step-by-step explanation:

Because the sum of any 2 sides is greater than the third side.

Interior angles of a triangle always add up to 180 degrees, so no.
90 degree is a right triangle and it would have two acute angles. An obtuse triangle would have one angle larger than 90 degrees and two acute angles. An acute triangle would have all angles smaller than 90 degrees.

Estimate the measure of the angle shown below.

Answers

Answer:

45

Step-by-step explanation:

because it can look a little bit more like half of a right angle

Answer:

45

Step-by-step explanation:

hope this helps

Find a fraction that is more than 0 and less than 1/1000

Answers

Answer:

Any of these are correct:

1/1001, 1/1002, 1/1003

1/2000, 1/2358

1/10000

2/3000= 1/1500

3/4000

so many!

Step-by-step explanation:

Anything that is positive and not negative will be bigger than zero.

Anything with a 1 on top (numerator) and LARGER than 1000 on the bottom (denominator) will be less than 1/1000.

OR you can change 1/1000 by multiplying 2/2 or 3/3 or 4/4 or 5/5 etc. Then lower the top number only. Example:

1/1000 × 5/5 = 5/5000

(multiply straight across: top×top and bottom×bottom)

Then shrink the top:

3/5000

Select the correct answer.

Solve the quadratic equation.

(x + 4)(x + 1) = 0

x = 4 or x = 1
x = -4 or x = 1
x = -4 or x = -1
x = 4 or x = -1

Answers

Answer:dama isis a few days ago and I will be able toatop

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a

Step-by-step explanation:

Answer:

The correct answer is x = -4 or x = -1

Explanation:

The equation is in factored form, so use the zero product property to solve the equation:

x + 4 = 0 or x + 1 = 0

x = -4 or x = -1

Find the measure of arc DB.
25°
96°
118°
146°

Answers

Answer: 146°

Step-by-step explanation:

Multiply and reduce to lowest terms. Convert into a mixed number if necessary.

Answers

Answer:

1 1/3

Step-by-step explanation:

2(8/12)=16/12=1 4/12=1 1/3


Cherokee Manufacturing Company established the following standard price and cost data.
Sales price
Variable manufacturing cost
Fixed manufacturing cost
Fixed selling and administrative cost
$12.00 per unit
$ 7.20 per unit
$3,600 total
$1,200 total
Cherokee planned to produce and sell 2,000 units. Actual production and sales amounted to 2,200 units.
Required
a. Determine the sales and variable cost volume variances.
b. Classify the variances as favorable (F) or unfavorable (U).
d. Determine the amount of fixed cost that will appear in the flexible budget.
e. Determine the fixed cost per unit based on planned activity and the fixed cost per unit based on actual activity.
Answer is not complete.

Answers

Assuming the Actual production and sales amounted to 2,200 units.The sales and variable cost is:2400 F; $1,440 UF.

Sales and variable cost volume variances

a. Sales and variable cost volume variances

Sales =(Actual units sold -Budgeted units sold)× Budgeted price per unit

Sales=(2200-2000)×$12.00 per unit

Sales=26,400-$24,000

Sales=2400 F

Variable=(Actual units sold -Budgeted units sold)× Budgeted price per unit

Variable=(2200-2000)×$7.20 per unit

Variable=$15,840-$14,400

Variable=$1,440 UF

b. Sales=2400 F

Variable=$1,440 UF

d.  Fixed cost

Fixed manufacturing cost $3,600

Fixed selling and administrative cost $1,200

e.                                                    Master budget   Flexible budget

Fixed manufacturing cost                     $3,600                  $3,600

Fixed selling and administrative cost $1,200                   $1,200

Tota fixed cost                                      $4,800                 $4,800

Cost per units                                        $2.4                       $2.18

($4,800 /2000) ($4,800/2200)

Therefore the sales and variable cost is:2400 F; $1,440 UF.

Learn more about sales and variable cost here:https://brainly.com/question/22765261

Which choice is equivalent to the expression below?

√-12

A. 2√3i

B. 2i√3

C. 12i

D. -2√3

E. -12i

Answers

Answer:

Step-by-step explanation:

Remark

√-12  

The square root of -12 must have an i in it somewhere. If it does not, then the minus sign stays under the root sign. If you take the root of -1 you get i, and that is outside √ sign.

Solution

A is incorrect. i is on the outside of the root sign.

B is the answer.

C does not seem to take the square root of anything except -1 so it is incorrect.

D Has no i anywhere and the -1 is incorrectly placed. D is wrong

E is just wrong. The minus should disappear once the square root of -1 is taken. 12 has a root that has not been declared.

2
cups
9. The tallest player on a college
basketball team is 86 inches tall. The
shortest player is 5 feet 9 inches tall.
How much taller is the player who is
86 inches tall?

Answers

Answer:

A

Step-by-step explanation:

5 feet 9 in inches=69

86-69=17

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