1. Which of the following equations shows how substitution can be used to solve the following syster
y = 2x + 3
2x + 5y = 3

2x + 5y = 2x + 3
2x + 5(2x + 3) = 3
2(2x + 3) +5y = 3
y = 3

Answers

Answer 1
It would be the second option, 2x+5(2x+3)=3. Solving a system of equations by substitution is where you solve for one of the equations and plug it into the other. The top equations shows what y is equal to. And they plugged that equation in for y in the second.

Related Questions

A rectangle has a length of 12 meters and a width of 400 centimeters. What is the perimeter, in meters, of the rectangle?
Your answer:
16 meters
32 meters
48 meters

Answers

48 meters is the answer

Answer:

24 800cm.

Step-by-step explanation:

Length in metres =12×100=12000cm

Perimeter. =2[l+b]

Perimeter. =2[12000+400]

Perimeter. =2×12400

Perimeter. =24 800cm

Perimeter. =24 800cm÷100

Perimeter. =24.8m

PLEASE GIVE BRAINLIEST

prove that 5root7 is i
rrational

Answers

Answer:

See Explanation

Step-by-step explanation:

Let us assume that [tex] 5\sqrt 7[/tex] is a rational.

Therefore, it can be expressed in the form of [tex] \frac{p}{q}[/tex], where p and q are integers.

[tex] \implies 5\sqrt 7=\frac{p}{q}[/tex]

[tex] \implies \sqrt 7=\frac{p}{5q}[/tex]

[tex] \because [/tex] p and q are integers.

[tex] \therefore \frac{p}{5q}[/tex] is a rational number.

[tex] \implies \sqrt 7[/tex] is rational ([tex] \because [/tex] quotient of a rational number is rational)

But, it contradicts the fact that [tex]\sqrt 7[/tex]is irrational.

So, [tex]5\sqrt 7[/tex] is also irrational, because the product of rational and irrational is irrational.

This contradiction is arising out because of our wrong assumption that [tex] 5\sqrt 7[/tex] is rational.

Hence, [tex] 5\sqrt 7[/tex] is irrational.

a bus stops 5 people get off. then 11 people get on a bus now there are 19 people on the bus

Answers

The answer is P=13 P-5+11=19
P=13

. Mr. Jargon, the gold seller, ordered 2500 grams of silver, .80 kilograms of brass, and 1700 grams of copper. How many kilograms of metal did she order in all? _______ kilograms

Answers

Answer:

5 kilograms

Step-by-step explanation:

There is a thousand grams in one kilogram so divide the silver and copper by 1,000 to get 1.7 and 2.5 then add them all together.

Could I plz get a crown just two away from leveling up!!

5

A system of equations is shown.

y = 2x – 7

y = -x + 5

What is the solution to the system of equations?

Answers

Answer:

x = 4

Step-by-step explanation:

Eliminate y by setting the first equation equal to the second:

2x - 7 = -x + 5

Combining like terms, we get:

3x = 12, so that x must be 4.

Please need help hurry.

Answers

Answer:

1/1

Step-by-step explanation:

Please help me with a cherry, sprinkles AND gummy bears??
Thank you!

Answers

Answer:

Step-by-step explanation:

square- 48*32=1536

triangle- .5*12*48= 288

Answer:

ALI = 288 in²AIEN = 1536 in²ALIEN = 1824 in²

Steps:

ALI = 48×12/2 = 48×6 = 288 in²

AIEN = 48×32 = 1536 in²

ALIEN = ALI + AIEN

ALIEN = 288 + 1536

ALIEN = 1824 in²

Think about multiplying any two rational numbers. Based on this activity and your previous work, write a set of rules for finding the sign of the product based on the sign of the two numbers being multiplied.

Answers

Answer:

Positive (+) * positive (+) = +

Negative (-) * negative - = +

Negative (-) * positive (+) = -

Positive (+) * negative (-) = +

Step-by-step explanation:

How result of the product of two numbers are affected by the sign on each number being multiplied :

Signs on number values may be positive (+) or negative (-)

The rules goes thus :

Positive (+) * positive (+) = +

Negative (-) * negative - = +

Negative (-) * positive (+) = -

Positive (+) * negative (-) = +

Therefore for any tow rational numbers, the sin of their product will follow the rules above.

What is the value of x?
26°
to
X =
= [?]

Answers

Answer:

x = 154°

Step-by-step explanation:

The central angle and the angle between the tangents are supplementary, so

x + 26° = 180° ( subtract 26° from both sides )

x = 154°

I need help on this.


Answers

Answer:

This is very easy. Basically, the smallest angle is across from the smallest side. The largest angle is across from the largest side. ezpz

So number 9 ordered from smallest to largest would be

GE < GF < FE

Step-by-step explanation:

**EASY**
***picture included***
(Question on slope)

3x - 4y = 7

Answers-
A.) 4/3
B.) 3/7
C.) 3/4
D.) 7/3

((Answer d didn’t show on the picture btw))

Answers

The answer is C.) 3/4

Becky and Keith run for exactly 20 minutes on a treadmill keith's treadmill said he had run 10,000 ft Becky's treadmill had said she had run 2 miles who ran farther and how much farther?​

Answers

Answer:

Becky ran farther and farther by 560 ft.

Step-by-step explanation:

1 mile = 5280 ft

Becky: 2 * 5280 = 10560 ft

Keith: 10000 ft

10560 ft > 10000 ft, so Becky ran more distance than Keith.

10560 - 10000 = 560 ft, so Becky ran 560 ft more than Keith.

Which expression has a quotient of about 7?

Answers

Answer:

36/5

Step-by-step explanation:

Which does not belong? 21% 21/100 21:100 21

Answers

Answer:

B.21

Step-by-step explanation:

because it's the only whole number.

I think 21:100.



Explained:
Because the brackets just don’t make sense

HELP THIS IS DUE TODAY!!

Find the distance from the point P(4,1) to the line segment joining the points Q(1,-8) and R(-4,2). Show your steps.

Answers

Answer:

7,8

Step-by-step explanation:

Distance Formula:

The distance between two points is the length of the path connecting them. The shortest path distance is a straight line. In a 2 dimensional plane, the distance between points (X1, Y1) and (X2, Y2) is given by the Pythagorean theorem:

d=(x2−x1)2+(y2−y1)2−−−−−−−−−−−−−−−−−−√

Calculate Distance

To calculate the distance between 2 points, (X1, Y1) and (X2, Y2), for example, (5, 6) and (-7,11), we plug our values into the distance formula:

d=(−7−5)2+(11−6)2−−−−−−−−−−−−−−−−−√

combining terms inside parentheses we get:

d=(−12)2+(5)2−−−−−−−−−−−√

squaring both terms we get,

d=144+25−−−−−−−√

adding the 2 results,

d=169−−−√

finally,

d=13

find the area of this shape

Answers

Answer:

1496π square meters

Step-by-step explanation:

A=2πrh+2πr²

  =2π(17)(27)+2π(17)²

  = 918π + 578π

  =1496π

The two lines represented by the equations below are graphed on a coordinate plane. Which statement best describes
the two lines?
2x + y = 12
y-2 = 3(x - 2)
1) parallel
2) perpendicular
3) the same line
4) neither parallel nor perpendicular

Answers

Answer:

4

Step-by-step explanation:

2x+y=12

y=-2x+12

y-2=3(x-2)

If it’s parallel to each other: the slope has to be the same.

If is perpendicular to each other: the slope should be the reciprocal to each other.

The first equation has a slope of -2

The second has a slope of 3

Neither the condition meet. So the answer is 4

In the triangle below, what is the measure of R?
8
8
309
P
A. 60°
B. 30°
C. 90°
D. 45°

Answers

Answer:

∠R = 30°

Step-by-step explanation:

Because QP = QR, it is an isosceles triangle. So ∠R = ∠P

Answer:

B. 30°

Step-by-step explanation:

Side QP and QR are equal which makes the angles equal as well

help i'll give you a brainliest pls :)

Answers

Answer:

17%..................

Which statement is true of z11.7?
z11.7 is between 0 and 1 standard deviations of the mean.

z11.7 is between 1 and 2 standard deviations of the mean.

z11.7 is between 2 and 3 standard deviations of the mean.

Answers

Answer

z11.7 is between 1 and 2 standard deviations of the mean.

Step-by-step explanation:

Dillon works in a coffee mug plant. One of his main tasks is to randomly select finished mugs and test them to make sure that they are properly formed and hold the correct amount of coffee without dissolving the finish. Which job does Dillon most likely have?

A Occupational Health and Safety Specialist
B Environmental Science and Protection Technician
C Quality Control Analyst
D Product Safety Engineer

Answers

I believe that the answer is C- Quality Control Analyst

Answer:

I feel the answer is Quality Control Analyst

Step-by-step explanation:

The reason being that they test the quality of the product and make sure there is no flaws.

So if the following system of equations by substitution.

7x+2y= -13
-3x-8y= -23

A. (-3,1)
B. (-3,4)
C. (1,3)
D. (1,1)

Answers

Step-by-step explanation:

Option B is correct.

I'm sure (-3 , 4)

Answer:

x=-3, y=4. (-3, 4). B)

Step-by-step explanation:

7x+2y=-13

-3x-8y=-23

-------------------

4(7x+2y)=4(-13)

-3x-8y=-23

---------------------

28x+8y=-52

-3x-8y=-23

-------------------

25x=-75

x=-75/25

x=-3

7(-3)+2y=-13

-21+2y=-13

2y=-13-(-21)

2y=-13+21

2y=8

y=8/2

y=4

A, B, C, and D are points on a line with Ab=1, Bc=2, Cd=4. Find the length of the segment Ad. Consider all possibilities

Answers

Answer:

7?

Step-by-step explanation:

xd

Answer:

It could be 7, 5, or 1

Step-by-step explanation:

To find the length of segment AD you have to find all the possiblities you can get from adding other segments with A and D.

A rectangle has a perimeter of 32 feet
and an area of 63 square feet. Find the
dimensions.

Answers

Answer:

the dimensions are 7 inches and 9 inches

Pls help will give brainless

Answers

Answer:

56 trucks and 24 cars

Step-by-step explanation:

Multiply each by 8 to continue the linear relationship.

Answer:

The answer is C. 56 trucks and 24 cars

Step-by-step explanation:

24/3 = 8

8 x 7 = 56

(っ◔◡◔)っ ♥ Hope It Helps ♥

Pls help I only have 8 minutes left I need a detailed answer pls be quick

Answers

Answer: 2x+4 is the equation

the slope would be 2/1 and the y would be 4 (up) because thats where it is on the y axis

Solution or not a solution

and because

Answers

Step-by-step explanation:

X + Y = -3

X + 3x +5 = -3

X=-2

X+Y=-3

Y=-3+2

Y=-1

Max has $156. He spends 2/3 of his money on groceries. How much money did he have remaining? Explain.

Answers

Answer:

$52

Step-by-step explanation:

first 2/3*156 and you get 104

Then you do 156 -104 and you will have your answer

Answer:

Max has $52 remaining

Step-by-step explanation:

[tex]\frac{2}{3}*\frac{156}{1} = \frac{312}{3} \\[/tex]

simplify [tex]\frac{312}{3}[/tex] by 3 to get [tex]\frac{104}{1}[/tex]

Can Someone please help me out with this problem

Answers

Step-by-step explanation:

find the area as if it was a rectangle so do 14x12 then subtract the area of half a circle with a diamater of 12

What is the area?
9 yd
7 yd

Answers

It is 63 yards squared (63yd^2)

Step-by-step explanation:

9 x 7 = 63

Answer:63

Step-by-step explanation:

Area=LxW

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