homework 2 solving systems by substitution

Answers

Answer 1
Huh?? me is in confusion!!! ikd how do do this, but I would help

Related Questions

A balloon is floating above a lake and a sunken canoe is below the surface of the lake. The balloon’s vertical position is 12 meters and the canoe’s is -4.8 meters. The equation  represents this situation.

Answers

Complete question :

A balloon is floating above a lake and a sunken canoe is below the surface of the lake the balloons vertical position is 12 meters and the canoes is -4.8 meters the equation the equation 12+d= -4.8 represents the situation 1. What does the Variable d represent 2. What value of d make the equation true

Answer:

d = lake

d = - 16.8

Step-by-step explanation:

The scenario described is represented by the equation :

12 + d = - 4.8

The variable d in the equation would refer to the surface of the lake. Hence, the lake is represented as d ;

For the equation above to be true such that the position of canoe is - 4.8

The we solve for d in the equation given :

12 + d = - 4.8

12 + d - 12 = - 4.8 - 12

d = - 16.8

Find the value of x in each triangle with the given angle measures.

Answers

Answer:

15°

Step-by-step explanation:

Total degrees of a triangle is 180°

Angle 1: ?

Angle 2: 81°

Angle 3: 84°

180°- 81°- 84° = 15°

Determine which ordered pair is part of the solution set for the inequality.
3x + y ≥ 6
(4, 3), (-2, 4), (-5, -3), (3, -3)

Answers

the answer is :(4.3) and (3.-3)

Explanation:You just replace the values but first you start by sending the 3x to the other side

PLEASE EXPLAIN YOUR ANSWER!

Answers

Answer:

B

Step-by-step explanation:

Basically you are dividing X by 4, meaning the number of boxes, if you took all the mugs out of the boxes there are 55 mugs.

lolz helppp thank uuuuuu

Answers

Answer:

Step-by-step explanation:

Friend runs 32/2=16 miles per week

You run 24/3=12 miles per week

Your friend runs (16-12)=4 more miles than you each week.

Answer:

o

Step-by-step explanation:

Find the area of the figure below

Answers

Answer:

4.5 x 14 = 63

Explanation:

The area of a parallelogram is the product of any base and the altitude to that base: A = bh.

3. There are 45 balloons at a birthday party and only 15 of them have
prizes inside. If a student allowed to pop one balloon, what is the
probability she will not win a prize?

Answers

Answer:

2/3 she will not win a prize

Step-by-step explanation:

1 in 3 balloons have a prize therefore 2 in 3 balloons do not have a prize

14 cm
8 cm
8 cm
....

Answers

the answer is 88 because the area of the square is 64 and the area of the triangle is 24 and 64+24=88

Answer:

88cm²

Step-by-step explanation:

8 x 8 = 64

14 - 8 = 6

6 x 8 = 48

48 ÷ 2 = 24

64 + 24 = 88

PLZ HURY Jani sold several items in a garage sale. She spent one-half of the money she made on a new bicycle. Next she spent one-half of what was left on a portable stereo set. If Jani had $60.00 left, how much money did she make from the garage sale?


A. $120

B. $240

C. $360

D. $720

Answers

Step-by-step explanation:

The answer is letter B. $240

Answer:b

Step-by-step explanation:

i toke quiz and got a 100

Can someone help me with this please

Answers

Answer:

Try C

Step-by-step explanation:

I hope that this is right

There is a line that includes the point (4,8) and has a slope of 4 What is its equation in slope- intercept form

Answers

Answer:

y=4x-8

Step-by-step explanation:

1) The slope-intercept form of an equation looks like this:

y=mx+b

The m stands for the slope and the b stands for the y-intercept. We need two points on the line to write out this equation.

2)We have the slope you entered in, so we'll plug that in first:

y=4x+b

3) Now, let's plug in that point you entered in to solve for b:

​ y=4x+b

8=4(4)+b

8=16+b

8-(16)=b

-8=b

   

4) Now that we have both our slope, m, and our y-intercept, b, values, we can plug them in to get our equation:

y=mx+b

y=4x-8

​  


Help please
A cone has a height of 16 meters and a diameter of 18 meters. What is its volume?
Use = 3.14

Answers

Answer:

The volume of the cone is 1357.168026

Step-by-step explanation:

1/3 x 3,14 x 16 x 9^2
= 1356,48 m^3

what is 80% of 25 help me

Answers

(i have to make this 20 characters long)
80% of 25 is 20

What is the area of a circle with the radius of 3 inches

Answers

Answer:

28.27

Step-by-step explanation:

Solve the system of equations below.
{X – y= 7
{2 – y= -4
O (5,2)
O (2,5)
O Ø
O Infinite

Answers

Answer:

fewaaaaa

Step-by-step explanation:

Which expression can be used to find the volume
of the rectangular prism in cubic centimeters?
Image shows a prism with a base area of 245 square cm and a height of 85 cm.

A. 85 + 245 =

B. 85 x 85 x 245 = ?

C. 85 + ( 85 x 245 ) = ?

D. 85 x 245 = ?

Answers

Answer:

85x85x245

Step-by-step explanation:

Using the quadratic formula to solve 7x2 -x = 7, what are the values of x?

Answers

Answer:

x=-7

Step-by-step explanation:

7x2-x=7

7x2=14.

14-x=7

When you finished the last step, you will subtract 14 to both sides.

14-x=7

14-14-x=7-14

this will cancel out the 14 on the left.

And will leave you with:

-x=7-14

7-14 is -7.

and this will get you to

-x=-7

To finish this off, you have to turn the negative x/variable, into a positive x/variable.

So, you will divide both sides of the equation by the same term.

-x = -7

into

[tex]\frac{-x}{1} =\frac{-7}{1}[/tex]

and it will be -7.

I hope this helps      :)

Find the distance between (8,5)(-1,3). Round your answer to the nearest tenth.

Answers

Answer: 9.2

Step-by-step explanation:

d = sqrt ((x2-x1)^2 (y2-y1)^2)

d = sqrt (85)

d = 9.219544

Elena has a large container with a capacity of 96 fluid ounces of lemonade. How many cups of lemonade can she fill?

Answers

Answer:

12 cups

Step-by-step explanation:

Please help me solve.
x^2-11x+19= -5

Answers

Answer:

x = 3 or x = 8

Step-by-step explanation:

X^2-11x+19=-5
So at first this is a quadratic equation
So h have to make that the equation equal 0 so X^2-11x+19=-5
+5 to other side

X^2-11x+19+5=0
X^2-11x+24=0
Open to bracket
Solve by factorizing
(X-8) (x-3)
So x = 8 or x=3


what is the logarithmic form for
[tex]2 { }^{x - 4} = 32[/tex]

Answers

Answer:

[tex]2^x-4=32\quad :\quad x=\frac{2\ln \left(6\right)}{\ln \left(2\right)}\quad \left(\mathrm{Decimal}:\quad x=5.16992\dots \right)\\\\2^x-4=32 \\\mathrm{Add\:}4\mathrm{\:to\:both\:sides}\\2^x-4+4=32+4\\\mathrm{Simplify}\\2^x=36\\\\apply exponential rule\\x\ln \left(2\right)=\ln \left(36\right)\\x\ln \left(2\right)=\ln \left(36\right)\\x=\frac{2\ln \left(6\right)}{\ln \left(2\right)}[/tex]

hope it helps:)

the radius of a circle is 8 what is the area of the circle? pls show work

Answers

Answer:

201.06

Step-by-step explanation:

A=πr2=π·82≈201.06193

Answer:

201.14 ≈ 201 unit²

Step-by-step explanation:

Area of circle = πr², where π is either 3.14 or 22/7 or 355/113. Mostly it is 22/7.

=> area of circle = (22/7) (8)² unit²

=> area of circle = (22 x 64)/7 unit²

=> area of circle = 201.14 unit²

If we take π = 3.14

=> area of circle = (3.14)(8)² = 200.96 unit²

ANSWER CORRECTLY AND GET BRAINLIEST

Answers

Answer:

A = 250

B = 10

Step-by-step explanation:

Why A equals 250 is because 10 squared 5 equals 500 and 500 divided by 2 equals 250.

Why B equals  10 is because 10 minus 5 is 5 we do that first cause its in pentises and 10 squared times 2 equals 200 and 200 times 5 equals 1000 so 1000 divide 100 is 10

Hope i helped

Please help some math!!!! its not -2/3

Answers

Answer:

2/3

Step-by-step explanation:

negative divided by a negative is positive

Answer:

D. 2/3

Step-by-step explanation:

The y increases by 2 every time the x increases by 3. Use rise over run.

Find two mixed numbers so that the sum is seven wholes and two eights and the difference is two wholes and four eigths

Answers

Answer:

Step-by-step explanation:

x + y = 7 + 2/8 = 58/8

x - y = 2 + 4/8 = 20/8

Add the equations together

2x = 78/8

x = 39/8

y = x - 20/8 = 19/8

x = 39/8 = 4⅞

y = 19/8 = 2⅜

The two triangles are similar.

What is the value of x?



Enter your answer in the box.

x =

Answers

Answer:

x = 10

Step-by-step explanation:

The ratio of corresponding sides of similar figures is same:

3x/20 = (4x + 2)/(20 + 8)3x/20 = (2x + 1) / 143x(14) = (2x + 1)(20)42x = 40x + 202x = 20x = 10

Answer: x=10

Step-by-step explanation: correct test results

Triangle 1 has vertices at (A,B), (C,D), and (E,F). Triangle 2 has vertices at (A+1,B+3), (C+1,D+3), and (E+1,F+3). What can you conclude about triangle 2?

Answers

Given:

Triangle 1 has vertices at (A,B), (C,D), and (E,F).

Triangle 2 has vertices at (A+1,B+3), (C+1,D+3), and (E+1,F+3).

To find:

The conclusion about the triangle 2.

Solution:

From the given information it is clear that the x-coordinates of the vertices of triangle 2 are 1 more than the x-coordinates of the vertices of triangle 1.

Similarly, the y-coordinates of the vertices of triangle 2 are 3 more than the y-coordinates of the vertices of triangle 1.

So, the rule of translation is:

[tex](x,y)\to (x+1,y+3)[/tex]

It means the triangle 1 is shifted 1 unit right and 3 units up to get the triangle 2.

Therefore, triangle 2 is congruent to triangle 1 and triangle 2 is the translation of triangle 1 by 1 unit right and 3 units up.

PLEASE HELP ASAP!! ITS DUE VERY SOON AND THIS IS MY LAST QUESTION. ILL MARK YOU THE BRAINLIEST

Answers

Answer:

can you show it a bit closer?! i cant read it

Step-by-step explanation:

It should be the last answer.
8 x 16 = 128
3 x 8 = 24 / 2=12. But there are two triangles so the area would add up to 24
24 + 128 =152
152x6= 912

Luisa surveyed 25 students from her school and found that 1/5 of them had more than one hour of homework

Answers

Answer: See explanation

Step-by-step explanation:

Your question isn't complete but I'm guessing you want to know the number of people that had more than one hour of homework. This will be:

= 1/5 × 25

= 5 people

Those that have less than one hour of homework will be:

= 25 - 5

= 20 people

In an effort to catch a criminal; a superhero is going to leap over a building and take a shortcut down the ally. The function f(x)=−16x^2+150x gives the superhero's height in feet as a function of time. The building is 425 feet high. Will the superhero make it over the building?

A. Yes, the superhero always makes it!
B. No, the superhero can only jump half the height of the building
C. No, the superhero will crash into the building at 351 feet
D. No, the superhero can only jump 150 feet into the air

Answers

Answer:C

Step-by-step explanation:

I put it in Desmos calculator and he can only jump 351 ft high

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