EQUATIONS AND INEC
Worked examples
a) Solve these simultaneous equation by eliminating by subtraction.
5a + 2b = 16 equation 1
3a + 2b = 12 equation 2​

Answers

Answer 1

Answer:

a=2 and b=3

Step-by-step explanation:

5(2) +2(3) = 10 +6 =16

3(2) + 2(3) = 12


Related Questions

area of the base of a pentagonal prism with a volume of 50 cubic centimeters and a height of 7.5 centimeters

Answers

Answer:

Step-by-step explanation:

V = B * h

50 cm^3 = B * 7.5 cm

B = 50 / 7.5

B = 6.67 cm^2

Answer:

375

Step-by-step explanation:

Area= b*h

50*7.5=375

What is a pair of complex numbers called?

Answers

Answer:Complex numbers in the coordinate plane. Each complex number x + yi corresponds to a number pair (x, y) in the plane, so we may say that the complex numbers form a two-dimensional collection. The two coordinates of the pair (x, y) are called the real part and the imaginary part of the complex number.

Step-by-step explanation:

The property taxes on a house were $2610. What was the tax rate if the house was valued at $290,000? Follow the problem-solving process and round your answer to the nearest hundredth of a percent, if necessary.

Answers

Hi

2 610  /  290  000  *100 = 0.9 %

Less than 1%

The tax rate if the house was valued at $290,000 was Less than 1%.

What is the fundamental principle of multiplication?

Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

We are given that property taxes on a house were $2610.

We need to find the tax rate if the house was valued at $290,000.

Therefore,

2610  /  290 000  x 100 = 0.9 %

Hence, the tax rate if the house was valued at $290,000 was Less than 1%.

Learn more about multiplications;

https://brainly.com/question/14059007

#SPJ5

Simplify the following.
a) 3x*y * 2xy

Answers

Simplify the expression.

6x^2y^2

travels only on Saturdays and Sundays and has miles this month. Travels every weekday and has miles this month. If they each travel about the same number of miles each​ day, who travels more miles per day for this​ month?

Answers

Complete question :

William travels only on Saturdays and Sundays and has flown 400 miles this month. Jason travels every weekday and has flown 500 miles this month. Who travels more miles per day for this month

Answer:

WILLIAMS ; 50 miles per day

Step-by-step explanation:

Given that :

Williams travel times = Saturdays and Sundays

Total distance traveled = 400 miles

Jason travel times = Every weekday

Total distance traveled = 500 miles

Number of weeks in a month = 4

Hence, saturdays and Sundays = 4 * 2 = 8 days

Weekdays = 5 * 4 = 20 days

Miles traveled per day:

Williams :

Total distance / number of days

= 400 miles / 8 days

= 50 miles per day

Jason :

Total distance / number of days

= 500 miles / 20 days

= 25 miles per day

50 > 25

Hence, Williams travel more miles per day than Jason

2m² +2m- 24=0
Alguien me podría ayudar a decirme gracias .

Answers

Answer:

Required Answer:-

[tex]{:}\longrightarrow[/tex][tex]\sf 2m^2+2m-24=0 [/tex]

[tex]{:}\longrightarrow[/tex][tex]\sf 2m^2-6m+4m-24=0 [/tex]

[tex]{:}\longrightarrow[/tex][tex]\sf 2m (m-6)+4 (m-6)=0[/tex]

[tex]{:}\longrightarrow[/tex][tex]\sf (2m+4)(m-6)=0 [/tex]

[tex]{:}\longrightarrow[/tex][tex]\sf (2m+4)=0{\quad}or\: (m-6)=0 [/tex]

[tex]{:}\longrightarrow[/tex][tex]\sf 2m=-4=0 {\quad}or\: m=6 [/tex]

[tex]{:}\longrightarrow[/tex][tex]\sf m={\dfrac {4}{-2}}{\quad}or\: m=6 [/tex]

[tex]{:}\longrightarrow[/tex][tex]\sf m=-2 {\quad} or\:m=6 [/tex]

[tex]\therefore[/tex][tex]{\underline{\boxed{\bf m=-2,6}}}[/tex]

Click on the supporting detail that correctly explains what
happens during reduction firing.
Answer:the third one

Answers

Answer: sorry i’m late ..

but the answer is : in reduction firing, the amount of oxygen is reduced as the fuel burns. So, different chemical reactions take place

Step-by-step explanation:

i took the lesson on iReady “understanding technical and scientific texts - tutorials- part 2- Level d” !!

What is the value of b? b+4 b+38 b-19​

Answers

Answer: For the first one b can be a higher or lower number

for the second one b can be a higher or lower number and the last one must be a higher number

Step-by-step explanation:

hope this helps :D


Tim made a tuna sandwich using bread
that measured 9 cm by 12 cm. He cut the
sandwich in half along a diagonal. What
is the length of the diagonal cut that he
made?

Answers

Answer:

Step-by-step explanation:

I looked this up on google. There is an answer key if u look up this exact question the 1st link is the answer key!

Hi I need help can you guys look at the screenshots thanks if the answer is correct I will give Brainliest if the answer is correct.

Answers

Answer:

D. -60 + (-30) = -30

Step-by-step explanation:

Put the word problem into an equation: -60 + (-30) = -30

I hope this helped, please mark Brainliest, thank you so much!!

The answer is C= -60+30=-30

Drag the tiles to match each equation to its number of solutions. Each tile may be used only once.

Answers

Answer:

Hello! Brainly is used for help on homework not for joking around. Next time you ask a question please make sure to add something your confused with you will most likely get help!

                                                                                 BrainlyMiddleSchool

Answer:

1- one solution  2- many solutions 3- no solution

Step-by-step explanation:

what is (10 - 3 x 2) to the power of 2?
Please help!

Answers

Answer:

The answer is 16

Step-by-step explanation:

Multiply  -3 by 2

(10-6)^2      ^2=power

subtract 6 from 10

4^2

Raise 4 to the power of 2

 16

.

Answer:

16

Step-by-step explanation:

= (10 - 3 x 2) ^ 2

= (10 - 6) ^ 2

= 4 ^ 2

= 16

HOPE THIS HELPS

PLZ MARK BRAINLIEST

Plis answer me this question is do tomorrow

Answers

Answer:

133? i just did 400 divided by 3 lol

Step-by-step explanation:

Answer:

60

Step-by-step explanation:

first, make sure that is the entire graph because if not this answer is wrong

20 people total and 3 picked science so 3/20=x/400 so 20x20=400 so 3x20 means the number of students 400 who picked science probably based on this and it is 60

Write a rule for the translation of ABC to A' B' C'

Answers

Answer:

(x-2,y-4)

Step-by-step explanation:

Here, we want to calculate the rule for the translation

From the question, we can see that the new image was just formed as a movement of the old image by some particular units

The x-axis was move sideways while the y-axis was moved further down

The number of units is thus;

Y from 12 to 8

A movement of -4

For the x-axis

we have a movement of two units toward the left

So the rule is;

(x,y) to (x-2, y-4)

Will mark brainliest pls help

Answers

Answer:

18

Step-by-step explanation:

Add all the sides. But you are missing two sides. Soo since the top is 4, the bottom is two bc half is two. then the right side is 5 and the left, half is 2 so the other half is 3. 3+2=5! soooo the perimeter is 18.

Answer:

18

Step-by-step explanation:

We add up the side lengths,

[tex]5+4+3+2+2+2= 18[/tex]

by finding missing side lengths with subtraction and logic

and I'm pretty sure this is correct, but I like double-checking things.

This figure is made out of 2 rectangles,

2x5 and 3x2

The perimeter of each is 14 and 10

[tex]14+10-3-3=18[/tex]

the two 3's are the over lapping sides

We also get 18.

could someone help me with this ? i need to find m

Answers

the three angles of a triangle always add up to 180 degrees.

So, add the three angles together!

2x - 12 + 2x + 17 + 9x - 7 = 180

Group the similar numbers together.

13x -2 = 180

13x = 182

x = 14

Plug x in to 2x + 17

14*2 + 17 = 45

mX = 45 degrees

Answer:

m∠X = 45°

Step-by-step explanation:

All angles in a triangle add up to 180°

2x - 12 + 2x + 17 + 9x - 7 = 180

13x = 180 - 17 + 12 + 7

13x = 182

x = 14°

m∠X = 2x + 17

sub x = 14° into m∠X

2(14) + 17

m∠X = 45°

What is the slope ? M=

Answers

Answer:

-3/2

Step-by-step explanation:

The slope is found by

m = ( y2-y1)/(x2-x1)

Using the points (-4,11) and ( 0,5)

m = ( 11-5)/( -4-0)

  = 6/-4

  = -3/2

help? brainliest if i can..

Answers

Answer:

C y=2x-6

Step-by-step explanation:

the diffrence in each one is two by using two as slope you get -6 as y intercept.

Answer:

y = 2x - 6 (Third option)

Step-by-step explanation:

(-6, -18), (-1, -8)

m = (-8 - (-18)) / (-1 - (-6))

m = (-8 + 18) / (-1 + 6)

m = 10 / 5

m = 2

-8 = 2(-1) + b

-8 = -2 + b

b = -6

y = 2x - 6

Hope this helps!

can someone help with these two problems?​

Answers

Answer:

a and b

Step-by-step explanation:

just trust =) ive done this before

Answer: The first one i think is C and the second one is B

Find the value of f(-3).

Answers

Step-by-step explanation:

the value is -5 hope that is good

Write two division equations for each multiplication equation.

1. 15 ⋅ 2/5 = 6

2. 6 ⋅ 4/3 = 8

3. 16 ⋅ 7/8 = 14

Answers

1. 2/5 = 6/15
2. 4/3 = 8/6
3. 7/8 = 14/16

Which runner lost the race?

Answers

Answer:

I would say charlie because why did it suddenly curve and then continue again?

Step-by-step explanation:

Hopefully this helps? Have a nice day/night! :)

Answer:

Charlie is the loser I believe sorry if I'm wrong

Step-by-step explanation:

Hope it helps!

Have a good day/night :)

Brainliest pls?

Find the product: a) (5 – 2h) (3 + h) b)4p ^2 q ^2 (p ^2 – q ^2)

Answers

Answer:

A.) -8h

Step-by-step explanation:

a.) . (5 – 2h) (3 + h)  

a.) (5 – 2h) (3 + h)  

(5+3) (h-2h)

8(-h)

-8h

Which expression is equivalent to 6x2 – 19x – 55?

Answers

Answer:  (x - 5)(6x + 11)

Step-by-step explanation:

Let's factorie the given expression using middle term splitting method.

Thus, we have ;

=> 6x² - 19x - 55

=> 6x² - 30x + 11x - 55

=> 6x(x - 5) + 11(x - 5)

=> (x - 5)(6x + 11)

Hence,

The equivalent expression of 6x² - 19x - 55 is :

(x - 5)(6x + 11).

Cj has $50 more than Jordan has. Together they have $100. How much does Jordan have?

Answers

Answer:

25

Step-by-step explanation:

take C as what Cj has, and J what Jordan has.

Cj has $50 more than Jordan has, so:

C = 50 + J

Together they have $100, so:

C + J = 100

is a system of 2 equations with 2 unknown (C and J):

C - J = 50

C + J = 100

Adding both equations:

2C = 150 ⇒ C = 75

From second equation: J = 25

Find the sum of the prime numbers less than 21

Answers

Answer:

1;3;5;7;11;13;17;19 add all the number

Answer:

Step-by-step explanation:

Prime numbers less than 21 are

2, 3,5,7,11,13,17,19

Sum= 79

A segment of length 94 cm has been rotated degrees around a center . What is the length of the rotated segment?

Answers

Answer:

Rotation does not change lengths.

Please hurry I need this fast

Answers

C. It’s C because those are vertical angles and not alternate Interior angles

Answer:

c

Step-by-step explanation:

A slug travels 3 centimeters in 3 minutes. A snail travels 6 centimeters in 6 minutes. Both travel at constant speeds. Mai says, “The snail was traveling faster because it went a greater distance.” Do you agree with Mai's reasoning

Answers

Answer:

yes

Step-by-step explanation:

a,p,e,x

Janna and Anthony walk home from school on Monday Wednesday and Friday their mother picks them up on Thursday and they ride the bus on Tuesday what fraction of time do they walk hom from school

Answers

Answer: 3/5

Step-by-step explanation:

Out of 5 school days, Janna and Anthony walk home on Monday, Wednesday and Friday.

This means they walk home on 3 days out of 5.

The fraction of time they walk home from school is;

= 3/5

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