Mathematics High School

The rivers depth is three meters greater than its width. two time the rivers depth is equal to six meters more than twice its width.
PLZ write a system of equations and show ALL work
WOULD APPRECIATE A LOT

Answers

Answer 1

Answer:

d = w + 3 (first equation)

2d = 2w + 3 (second equation).

The second equation is equivalent to the first one.

In other words, two equations carry the same information as the first one, not more.

In the language of linear algebra, the system is dependent

Related Questions


What is the value of 16.43 – 1.043

Pls show the work of how you did it

Answers

Answer:

15.387

Explanation:

16.43
- 1.043
————
15.387
Decimals are cool because you can add zeros to the end of them, and they will still be the same number.

16.43 = 16.430

I add the zero to the thousandths place because I am subtracting a number from 16.430 that has a number in the thousandths place. When you line the two numbers up to subtract you want to make sure they have an equal amount of decimal places.

1 6. 4 3 0 <— you now are ready to subtract.
- 1 . 0 4 3 I lined up the numbers in the
—————— ones, tenths, hundredths + Thousandths place. I drop the decimal point down.

Start from the rightmost digit.
You can’t subtract 3 from 0, so you borrow ten from the left.
3-1 =2. Cross out 3 and write 2 above it.
You add 10 to 0. 10+0=10. Cross out 0 and write 10 above it.
You can subtract 3 from 10 now. 10-3=7.

2 10
1 6. 4 3 0 You now have this.
- 1 . 0 4 3
——————
. 7

You can’t subtract 4 from 2, so you borrow from the left again.
4-1=3. Cross out 4 and write 3 above it. 2+10=12. Cross out 2 and write 12 above it.
12 - 4 = 8.
This is what that looks like:

12
3 2 10
1 6. 4 3 0 You now have this.
- 1 . 0 4 3
——————
. 8 7

3 - 0 = 3.
6 - 1= 5.
1 - 0 (as there is no digit in the tenths place) = 1

12
3 2 10
1 6. 4 3 0 You now have this.
- 1 . 0 4 3
——————
1 5. 3 8 7

So 16.43-1.043= 15.387

Help plssss lolllllll

Answers

Answer:

8

Step-by-step explanation:

you want to set it up like this

8/20   and   6/2x-1

then you cross multiply

so 8(2x-1)  = 16x-8

and 20*6 = 120

then you do 120= 16x-8

add 8 to both sides   (you want x by it's self so to get rid of a -8 you have to add 8)

128= 16x  

(divide both sides by 16)

128/16= 8

8=x

Answer:

what they said↑↑↑

Step-by-step explanation:

12. Triangle ABC is shown on the coordinate plane. If it is translated 4 units to the left and 3
units up, what are the coordinates of the vertices of the image?


A. A (1.1), B'(6,0), C (1.4)
B. A'(-1,1), B'(0,6), C (-4,-1)
C. A' (1.-1), B'(6,0). C'(-4,1)
D. A'(-1,-1), B'(0.6), C'(4-1)

Answers

Answer:

Sorry about that I didn't read the question correctly but the answer is B.

Step-by-step explanation:

All you are doing is moving the points 4 units to the left and 3 units up. Hope this helped! :)

SOLVE QUICK PLEASE!! 20 POINTS

Answers

Answer:

SA = 384 in²

Step-by-step explanation:

Assuming we're finding surface area:

SA of top of large cube: 8(8) - 4(4) = 48 in²

SA of sides of large cube: 4(8)(8) = 256 in²

SA of exposed faces of small cube: 5(4)(4) = 80 in²

Total = 48 + 256 + 80 = 384 = ∑SA

Rewrite 0.361 as a fraction in lowest terms.

Answers

Answer:

361/1000

Step-by-step explanation:

this should be the answer

I need help, I’ve been stuck on this question plz

Answers

Answer:

when distributing the first equation 1/4(8y+24) it is actually 2y+6 because 1/4*24= 6 not 8

Step-by-step explanation:

Write an equation that you can use to solve for x.

Enter your answer in the box.

Answers

Answer:x= 40

Step-by-step explanation:

x+80+60= 180 (angles on a straight line)

Worth a lot of points!
Express the following equation in the form ax^2+bx+c=0:
(4a+3)^2=(a+5)(a−2)

Answers

Answer:

15a² + 21a + 19 = 0

Step-by-step explanation:

Given

(4a + 3)² = (a + 5)(a - 2)

(4a + 3)(4a + 3) = (a + 5)(a - 2 ) ← expand both sides using FOIL

16a² + 24a + 9 = a² + 3a - 10 ( subtract a² + 3a - 10 from both sides )

16a² - a² + 24a - 3a + 9 + 10 = 0 ← collect like terms

15a² + 21a + 19 = 0

Factoring Trinomials is the opposite of Multiplying two binomials together?

True or False

Answers

that would be false.
I think it’s false hope this helps

Kate has 10 stickers. One half of them are purple. How many of Kate’s stickers are purple?

Answers

Answer:

5

Step-by-step explanation:

Half of ten is five  so Kate’s has five purple stickers

Help please
Find the value of x. *

Answers

Answer:

Step-by-step explanation:

Answer:

[tex]x=\sqrt{10^{2}-y^{2}}[/tex]

Step-by-step explanation:

[tex]x^{2} +y^{2} =10^{2} \\x^{2} =10^{2}-y^{2}\\x=\sqrt{10^{2}-y^{2}}[/tex]

What is the area, in square feet, of the trapezoid below?

Answers

Answer:

A=54

Step-by-step explanation:

A=a+b /2 h=8+13.6 /2/ ·5=54

please help me Find the quotient of 24 and 12.

Answers

Answer:

2

Step-by-step explanation:

24/12 = 2

Answer:2??????? Are you dividing 24 by 12????

Step-by-step explanation:

HELP!!! Andre reads 2 1/2 pages in 1/4 hour. What is the complex fraction and unit rate?

Answers

Answer:

20

Step-by-step explanation:

2 1/2 = 5/2

5/2 x 4/1 = 20/1 = 20

(We are dividing fraction)

(keep change flip)

The dimensions of the top of a rectangular rag are (2x + 1) feet and (3x +4) feet. Which equation represents the area of the top of the rug, A, in square feet?

Answers

Answer:

A=2(2x+1)(3x+4

Step-by-step explanation:

Look at the number line.
+++
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5
Which absolute value expression represents the distance
shown on the number line?
OA) 12.5 + 5
OB) 12.5 - 5
OC) 12.50 – 151
OD) 12.5] + 151

Answers

This is so confusing. I don’t understand it

HELPHELPHELPHELPHELPHELPHELP​

Answers

Answer:

the answer is 75

Step-by-step explanation:

225 ÷ 3

75

Answer:

75

Step-by-step explanation:

no.of candles he make in 3 hrs = 225

no. of candles he make in 1 hr = 225/3

= 75 candles

Evaluate the expression: 3x + 5 = ? when x = 2.

A. 8
B. 9
C. 10
D. 11

Answers

When x = 2

Then f(x) = 3x + 5

3 × 2 + 5

6 + 5 = 11 Ans. ( Opt. D )

A student solved the equation 2x+6=12 using algebra tiles. incorrectly says the solution is 9. Solve the equation. What mistake might the student have​ made? btw giving brainliest!

Answers

Instead of subtracting 6 from 12 then dividing they added 6 to 12 & ended up with 18. 18 by 2 is 9.

Select all of the following that can be a counterexample for the statement below.
If x is an integer, then x + 2 > 7.

Answers

I can't see pictures, but I'm assuming you want it solved.

x+2>7.

Cancel out the 2 by subtracting 2 from both sides.

x+2>7

 -2   -2

x>5

So the inequality is x>5.

---

hope it helps

sorry if it doesn't

20 points!!

Which of the following coordinates are exactly 5 units from (2, -1)? Select all that apply.

(-2, 2)
(5, 3)
(-3, -1)
(3, 4)

pls i need this done soon :) !

Answers

hey! it would be the third one (-3,-1)

PLEASE HELP ME ASAP I'LL GIVE BRAINLIEST

Answers

Answer:

Y = 6

Step-by-step explanation:

Rearrange terms

4+ =10

+ 4 = 10

Subtract 4  from both sides of the equation:

+ 4 =10

+ 4 −4 = 10 − 4

Simplify: Subtract Numbers:

Solutions is y= 6

please help will be marking Brainliest

Answers

Answer:

A or b not to sure

Step-by-step explanation:

help me please it's due today

Answers

Answer:

15, 16,31

Step-by-step explanation:

The rule is that each time you add by 7, like in the first 2.  4+7=11 and 7+7=14

hopefully this helps! 8-15 16-23 24-31

please help me


The lengths of a triangle are 50 m, 120 m, and 130 m. Which formula could be used to show that the triangle is a right triangle?

A. 502 + 1302 = 1202
B. 1202 + 502 1302
C. 1302 + 1202 = 502
D. 502 + 502 1202​

Answers

Answer:

Step-by-step explanation:

1302 + 1202 = 502

Answer:

1302 + 1202 = 502

Step-by-step explanation:

Cant really explain. 1302 + 1202 = 502

If f(x) = 5x – 2 and g(x) = x+1, find (f = g)(x).
OA. 5x - x-3
B. 5x2 +1
O C. 5x® - X-1
D. 5x4 - 2

Answers

Answer: Choice A) 5x^3 - x - 3

=================================================

Work Shown:

We subtract the two functions like so

(f - g)(x) = f(x) - g(x)

(f - g)(x) = ( 5x^3-2 ) - ( x+1 )

(f - g)(x) = 5x^3 - 2 - x - 1

(f - g)(x) = 5x^3 - x - 3 ..... choice A

Note: be sure to remember to distribute the negative to every term inside (x+1), and not just to the x only.

Solve for x
0.5x = 20

1. x = 40
2. x = 10
3. x = 2.5

Answers

Answer:

It's the first answer. 40

Step-by-step explanation:

divide both sides by 0.5

Answer:

1. x=40

Step-by-step explanation:

x=20÷0.5

x=40

The LM = 3x - 2, LN = 2x + 1, and MN = 5x - 2.

Answers

the answer would come out to be 26

Solve for c, giving brainliest. please show your work/explain, i got to the point of square rooting 185, but i don't understand where to go from there if it cannot be simplified. Thanks.

Answers

Answer:

13.6 in

Step-by-step explanation:

Please refer to the attachment




Emily is entering a bicycle race for charity. Her mother pledges $0.40 for every 0.25 mile she bikes. If Emily
bikes 5 miles, how much will her mother donate?

Answers

5/.25 = 20
20x0.4= $8
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