5x + 2y = 7
7x + 6y = -3
Please solve using elimination method.

Answers

Answer 1
x=3 y=-4
hope that helps

Related Questions

Arrange these numbers in order of size starting with the smallest: 0.7, 0.1015, 0.715, 0.11

Answers

Answer:

0.1015, 0.11, 0.7, 0.715

Clarence earns a 10% commission
on sales plus a $200 weekly salary.
In one week, his sales totaled $2100.
What was his total pay that week?

Answers

Answer:

$410

Step-by-step explanation:

Step 1

We calculate the amount of commission of sales

Commission rate = 10%

Total sales = $2100

Hence,

= 10% × $2100

= 10/100 × $2100

= $210

Step 2

The total pay of Clarence for that week

= Commission + Weekly salary

Commission = $210

Weekly salary = $200

Hence,

= $210 + $200

= $410

Which equation can be used to solve for x in the parallelogram below?

Answers

Answer:

option B

Step-by-step explanation:

According to Euclidean Geometry , opposite side and opposite angles of parallelogram are equal.

That is,

( 6x + 12 )° = (7x - 8 )°

PLZ HELP, IT WOULD MEAN THE WORLD

A television was originally priced at $522, but Sam waited to buy it until the television was on sale for 50% off. If
he paid 8% sales tax on the sale price, how much did he pay in total?

Answers

Answer:

$281.88

Step-by-step explanation:

Solve for 50% of $522:

522 × 0.50

261

Solve for sales tax:

261 × 0.08

20.88

Solve for total:

261 + 20.88

281.88


PLEASE PLEASE HELP ME !!!i need to solve this doing the zero product property

Answers

factor the trinomial and you would get (x-7)(x+5)=0 and then you get
x=7 and x=-5

Which region represents the solution to the given system of inequalities?

Answers

Point C represents the solution of the inequality graph

How to get solutions of inequality graphs

The graph shows two sets of equations

y < -1/2x andy ≥ 2x + 3

The first equation

y < -1/2x

This is represented by a dotted line because it does not have the equality sign. The sign represented is called the less than sign. The feature of being a dotted line helps in knowing the line that solves the equation.

Also. the solution of the less than sign is below the line this eliminates points B and A.

The second equation

y ≥ 2x + 3

This is represented by a solid line since it has the equality sign present. This is read as greater than or equal to. It has two signs joined together. The solution of the greater than sign is above the line this eliminates points  A and D

Hence points A, B, and D has been eliminated remaining point C hence point C represents the solution of the inequality graph

Read more on inequality graph here: https://brainly.com/question/24372553

#SPJ1

NEED HELP! Will give brainliest!!! Answer number 18 and 19

Answers

18. 3 (-5 + 1) = 6 x -3 = -18 false its -14

19. 1/2 x 2 + 1/4 x 12 = 8 false its 4

Frank kept track of the amount of money he earned each day for 2 weeks.the amounts,in dollars,are listed below.
25,30,24,20,20,22.5,75,27,27,22,22,27,22.5,28
Find and calculate the measures of center and variability that best summarize frank's data.explain

Answers

Answer:

Step-by-step explanation:

Which set of numbers can represent the side lengths, in inches, of an acute triangle? 4, 5, 7 5, 7, 8 6, 7, 10 7, 9, 12 Which set of numbers can represent the side lengths, in centimeters, of a right triangle? 8, 12, 15 10, 24, 26 12, 20, 25 15, 18, 20

Answers

Answer:

1) 5, 7, 8

2) 10, 24, 26

Step-by-step explanation:

1) For an acute triangle, the square of the longest side is less than the sum of the square of the two smaller sides.

a) 4² + 5² = 16 + 25 = 41

7² = 49 > 4² + 5².  Therefore the triangle is not acute

b) 5² + 7² = 25 + 49 = 74

8² = 64 < 5² + 7².  Therefore the triangle is acute

c) 6² + 7² = 36 + 49 = 85

10² = 100 > 6² + 7².  Therefore the triangle is not acute

d) 7² + 9² = 49 + 81 = 130

12² = 144 > 7² + 9².  Therefore the triangle is not acute

2) For a right angled triangle, the square of the longest side is equal to the sum of the square of the two smaller sides.

a) 8² + 12² = 64 + 144 = 208

15² = 225 > 8² + 12².  Therefore the triangle is not a right triangle.

b) 10² + 24² = 100 + 576 = 676

26² = 676 = 10² + 24².  Therefore the triangle is a right triangle.

c) 20² + 12² = 400 + 144 = 544

25² = 625 > 20² + 12².  Therefore the triangle is not a right triangle.

d) 15² + 18² = 225 + 324 = 549

20² = 400 < 15² + 18².  Therefore the triangle is not a right triangle.

What is the solution of the equation 0.2x = 10?
Select one:
x=2
Ο α = 100
2= 20
x = 50

Answers

Answer:

x = 50

Step-by-step explanation:

0.2x = 10

Divide each side by .2

0.2x/.2 = 10/.2

x =50

Answer:

Step-by-step explanation:

x=50

0.2 x 50 = 10

statisticians for a roadside assistance company interviewed 50{,}00050,00050, comma, 000 randomly selected United States (US) households. Of those, 15{,}59515,59515, comma, 595 reported that they had traveled 505050 or more miles from home between December 232323 and January 444. If there are 115{,}000{,}000115,000,000115, comma, 000, comma, 000 US households, approximately how many of them do the interviews suggest traveled 505050 or more miles from home at that time

Answers

Answer:

The answer is "35,868,500 people".  

Step-by-step explanation:

In this question, the chance of people that have traveled above 50 miles is calculated. The chance of success is the probability.

[tex]n=50000\\\\ p=15595[/tex]

[tex]\to P(x\geq 50)=\frac{15595}{50000}=0.3119[/tex]

The population of the United States is at 1150000.

Let's determine that portion of the current population has gone more than 50 miles:

[tex]\to E(X)=np,N=115000000,p=0.3119\\\\=0.3119\times 115000000\\\\=35868500[/tex]

may I please have help from anyone thank you so much !

Answers

Surface area
Volume
Surface area
Volume
Surface area
Volume
(I’m pretty sure they’re all correct)

Answer:

1. SA

2. VO

3. SA

4. VO

5. SA

6. VO

SA=Surface Area

VO=Volume

how must m2 be changed to keep the lines parallel?

Answers

Answer:

bring the lines side by side ( example || )

Step-by-step explanation:

Find the length of AB. 6 30 AB=[?]in

Answers

Answer:

AB ≈ 3.14 in

Step-by-step explanation:

arc AB is calculated as

AB = circumference of circle × fraction of circle

     = 2πr × [tex]\frac{30}{360}[/tex]

     = 2π × 6 × [tex]\frac{1}{12}[/tex]

     = 12π × [tex]\frac{1}{12}[/tex]

     = π ≈ 3.14 in ( to the nearest hundredth )

Can I get some help please? Time is limited!!!

Answers

hi! i believe the third one cannot be solved by the square root method, because there’s an x without an exponent. hope this helped!

can someone help me with this

Answers

Answer:

they can ride 20 rides with the 40 dollars you just have to dived 40 by 2

Complete the Law Of Sines Select the value that belongs to the green box, please somebody!

Answers

Answer:  [tex]\frac{a}{\sin(A)} = \frac{b}{\sin(B)} = \frac{c}{\sin(C)}[/tex]

The sin(A) goes with 'a'

sin(B) goes with b

sin(C) goes with c

Each angle goes with the corresponding side to form the three fractions shown. You can break up that triple equation into smaller equations such as [tex]\frac{a}{\sin(A)} = \frac{b}{\sin(B)}[/tex] and [tex]\frac{b}{\sin(B)} = \frac{c}{\sin(C)}[/tex] and [tex]\frac{a}{\sin(A)} = \frac{c}{\sin(C)}[/tex]

Note: if you apply the reciprocal to all three sides, then you'll get an equivalent equation. I'm using the rule that A/B = C/D is the same as B/A = D/C.

Pls help :(
(It’s math)
Solve the system of equations

Answers

Answer:

(3,5)

Step-by-step explanation:

For this equation, you need to solve it like simultaneous equations. Both of these have a 4y, so that is relatively easy to do, once you know how to.

The signs in front of the 4y are different, so you add the 2 equations (to remove the ys all together).

This should be (2x+-8x)+(-4y+4y)=(-14+-4), or (2x-8x)+(4y-4y)=(-14-4).

This can be expanded to -6x+0=-18, or -6x=-18.

Dividing both sides by -6 leaves you with x=3.

To find y, substitute this x value into either equation (I picked equation 1 as it is simpler). This gives you 2(3)-4y=-14, expanded to 6-4y=-14.

From there, you subtract the 6 from both sides, to get the y alone (giving -4y=-20).

By dividing both sides by -4, you get y=5.

This means the answer is (3,5).

**This question involves simultaneous equations, so you might want to look at that. I'm always happy to help!

Please help with this math

Answers

[tex]x=2+½*\sqrt{10} [/tex]

or

[tex]x=2-½*\sqrt{10} [/tex]

Answer:

Solution given:

y=2x²-5x+6.....[1]

y=3x+3.........….[2]

solving equation 1&2

2x²-5x+6=3x+3

2x²-5x-3x+6-3=0

2x²-8x+3=0

comparing above equation with ax²+bx+c=0 we get

a=2

b=-8

c=3

by using quadratic equation

[tex]x=\frac{+8±\sqrt{(-8)²-4*2*3}}{2*2}[/tex]

[tex]x=\frac{+8±2\sqrt{10}}{4}[/tex]

taking positive

[tex]x=\frac{+8+2\sqrt{10}}{4}[/tex]

[tex]x=2+½*\sqrt{10} [/tex]

taking negative

[tex]x=2-½*\sqrt{10} [/tex]

Which triangles are congruent by ASA?

A). ABE= DEA
B) ADC=EBC
C) ADC=EDA
D) ABE=CDA

Please help?!!!

Answers

Answer:

c

Step-by-step explanation:

Circle D is inscribed in AABC as shown.
Point E marks the intersection of the two
shapes. Which of the following statements are
true?
Statement I: DE is the radius of the
inscribed circle.
Statement II: DE is perpendicular to AC.
Statement III: Point D is equidistant from
vertices A, B, and C.

Answers

Answer:

statement 1 and 2 are true

Please help!!! Answer ASAP and please show work

Answers

Edited:

(-1,3)

read the text wrong. but the method below holds :D

Step-by-step explanation:

The intersection of the AC line with the BD line is at (1,3)

method: hold an old receipt on my phone screen. would describe it as a graphically approach to the solution

on paper a ruler would be enough to draw the two mentioned lines.

do you need an algebraic way to do it?

2) A theater is designed so that the first row has 20 seats. Each additional row has 4 more seats than the previous row. How many seats will be in the 40th row?​

Answers

Answer:

there will be 176 seats in the 40th row

I will give BRAINLIEST to the correct answer
Find the measure of

Answers

Answer:

8p+102+4p+60 =90

12p+162-162 =90-162

12p. =-72

p =(-6)

CHT=8p+102

={8×(-6) }+102

=(-48)+102

=54

find the area of a circle if x=12 and y=3

Answers

Answer:

12.3693169

Step-by-step explanation:

x^2+y^2=r^2

(12)^2=(3)^2=sqroot(153)

=12.3693169

Someone pls help me ill give out brainliest pls don’t answer if you don’t know

Answers

Answer: X

Step-by-step explanation: The Square root of 68 is 8.246, meaning the closest point to that number is X.

Help me as quick as possible
11x+4y=12
9x-4y=8
Solve it with elimination method

Answers

Answer:

x = 1, y = 1/4

Step-by-step explanation:

[tex]11x + 4 y = 12 \ \ \ ---( 1)\\9x -4y = 8 \ \ \ - - - (2)\\\\(1) + ( 2 ) => 20x + 0 = 20\\\\[/tex]

            [tex]=> x = 1[/tex]

Substitute x = 1 in ( 1 ) :  

                            [tex]11 + 4y = 12\\4y = 12 - 11\\\\y =\frac{1}{4}[/tex]

Explain what the graph of a polynomial that has a degree of 4, zeros of -1, 7, 10,
and a leading coefficient that is negative would look like.

Answers

Answer:

6, -5 and 6. Assume the leading coefficient of f(x) is 1. Write the equation of the cubic polynomial in standard form.

In this swimming pool design, explain how to find the area of the pool’s surface.

Answers

Answer:

Subtract the area of the semicircle from the area of the rectangle

Step-by-step explanation:

Hi there!

1) Find the area of the rectangle

[tex]A=lw[/tex]

Plug in the given side lengths 10 and 8 and solve for the area of the rectangle. Disregard the semicircle.

2) Find the area of the semicircle

[tex]A=\pi r^2[/tex]

Divide 8 by 2 to find the radius and solve for the area of the circle. Divide this by 2 to represent the semicircle.

3) Subtract the area of the semicircle from the area of the rectangle

[tex]A_r_e_c_t_a_n_g_l_e-A_s_e_m_i_c_i_r_c_l_e=A_p_o_o_l[/tex]

I hope this helps!

I need help what’s the answers

Answers

Answer:

Quadratic

Step-by-step explanation:

The format for a quadratic function is: y= ax^2+bx+c.

This matches your equation.

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