Mathematics High School

(x - 12y = -4
( x - 9y = 7

Answers

Answer 1

9514 1404 393

Answer:

  (x, y) = (40, 11/3)

Step-by-step explanation:

The variable x can be eliminated by subtracting the first equation from the second.

  (x -9y) -(x -12y) = (7) -(-4)

  3y = 11 . . . . . . .simpify

  y = 11/3 . . . . . .divide by 3

  x -9(11/3) = 7 . . . . substitute for y in the second equation

  x = 40 . . . . . . . add 33

The solution is (x, y) = (40, 11/3).

(x - 12y = -4( X - 9y = 7

Related Questions

A triangle has two sides that are 4 in. And 10 in. What could be the length of the third side of the triangle? Select all that apply.

Answers

Answer:

see explanation

Step-by-step explanation:

Given 2 sides of a triangle then the range of the third side x is

difference of 2 sides < x < sun of 2 sides , that is

10 - 4 < x < 10 + 4

6 < x < 14

Thus the third side can be 7, 8, 9, 10, 11, 12, 13

help with question 20 DUE IN 10 mins

Answers

Question 20 is 2/11 i believe

wich set of numbers is areanged in decreasing order? I need help thanks ​

Answers

Answer:

Send a pic of the problem.

Step-by-step explanation:

write some thing good in answer.
Fro. there I will choose one and I will mark one person as a Brilliant.
So write fast it is valid till 15 days.​

Answers

Answer:

You’re awesome.

Answer:

some thing good in answer.

Number of minutes Number of bacteria
1 1
2 4
3 9
4 16
how many bacteria will there be after 20 minutes? Explain your answer please

Answers

the number of bacteria is the square of the number of minutes. so after 20 mins, there will be 400 bacteria

Can someone just explain to me how to find “u” Thanks!

Answers

Answer:

u = 4 yards

Step-by-step explanation:

Step 1:  Find u using sin

[tex]sin(x) = \frac{opposite}{hypotenuse}[/tex]

[tex]sin(30)=\frac{u}{8}[/tex]

[tex]8*sin(30)=u[/tex]

Step 2:  Plug into a calculator

[tex]8*sin(30)=u[/tex]

[tex]8 * \frac{1}{2} = u[/tex]

[tex]4 = u[/tex]

Answer:  u = 4 yards

Please help with number 1? It’s urgent!!!!

Answers

Answer:

b

Step-by-step explanation:

Please help Divide: 0.52/4.42

Answers

this is karma for spamming random stuff on peoples questions if you want people to help you dont go trying to get free points by commenting jr3nfrhgvberhvrucv

John's rate of pay is £12.60 per hour. One day he gets payed £119.70 John works 9 hours 50 mins that day

Answers

Answer:

Proof of conceptual & numerical relationship between Total Pay, Pay rate per hr, No of hrs

Step-by-step explanation:

Total Pay = Pay rate per hr x No of hrs

No of hrs = Total Pay / Pay rate per hr

No of hrs = 119.70 / 12.6

No of hrs  = 9.5

Hence Proved

Tina's college tuition is $7,500. She pays 25% down and takes out a
loan for the balance. How much of a loan does Tina take out?

Answers

Answer:

9,375

Step-by-step explanation:

7,500*.25= 1,875

7,500+1,875=9,375

A local bakery sells cupcakes for $3.50 each. The fixed monthly cost totals $275 which includes rent, utilities, and wages. Each cupcake costs the bakery 0.90 to make.

Answers

Answer: 110 cupcakes

Step-by-step explanation:

Assuming this question is asking for the breakeven point, you can find that by using the formula:

= Fixed cost / Contribution margin

Contribution margin = Sales price - variable cost (amount to make one cupcake)

= 3.50 - 0.90

= $2.60

Breakeven point = 275 / 2.60

= 109.77

= 110 cupcakes

In Triangle PQR, p = 36 cm, q = 21 cm and r=17 cm. Find the measure of ZQ to the
nearest 10th of a degree.

Answers

Answer:

20.8

Step-by-step explanation:

If your using delta math ..

Answer:

20.8

Step-by-step explanation:

delta

What does the remainder tell you about the
relationship between the dividend and the divisor when dividing polynomials?

Answers

Answer:

The remainder is the number left when you completely divide out your number to its max (Dividend = Divisor × Quotient + Remainder)

Step-by-step explanation:

I hope this helped

Can someone answer these for me please really need help

Answers

Answer: 602.9 ft^2
Have a good day :D

5. What method can be use to prove the triangles below are congruent?

(look at photo for answer options)

Answers

Answer:

Congruent by HL

Step-by-step explanation:

I know this, im doing it in integrated math

Hope this helped! Have a nice day! Plz mark as brainliest!!! :D

-XxDeathshotxX

the answer is HL hope this helps did this before

(
What is the measure of angle xº?

Answers

X will equal to 30 degrees

Answer:

its 30 and i think we go to the same school..

Step-by-step explanation:

find the measure of angle 6

Answers

Answer:

∠6 = 125°

Step-by-step explanation:

__________________________________________________________

FACTS TO KNOW :-

When any 2 lines intersect each other at any point , the vertical angles are always equal to each other .

__________________________________________________________

According to the figure ,

∠6 is present vertically opposite to the angle whose measure is 125°.

∴ Hence ∠6 = 125°.

125 trust me lol btw yw it’s like 5am and i stayed up all night

The cost of 3 quarts of milk is $6.75. How many quarts can you buy with $20.25?

Answers

Answer: 9 quarts

Explanation: 20.25/6.75 = 3 x 3 = 9

NEED HELP ASAP
The floor area of a rectangular room is represented by x2 + 3xy – 10y2. What could the length and width be?

Answers

Answer:

The length is x + 5y

The width is x - 2y

But see below.

Step-by-step explanation:

Remark

The point of this question is to factor the trinomial. It can be factored.

(x  5y)(x  2y )

has to be the beginning of the factoring process.

(x - 5y)(x + 2y) The signs are right. The factoring isn't. The middle term has to be plus.

(x + 5y)(x - 2y)

The length is x + 5y

The width is x - 2y

x must be larger than 2y, otherwise you will get a negative width. That  cannot be right.

Tyler's family has 4 children. How many ways can they line up to get their flu shot at the doctor?

Answers

Answer:

16 if im correct

Step-by-step explanation:

4x4=16.

aaaaaa im sorry i did not know that I did not know this :C ill try

At 7:00 am, the temperature was -4℉. At 9:00 am, it was 8° warmer. What was the temperature at 9:00 am? *

Answers

4℉.

What we know about Degrees is that there is a Positive type and a negative type.

(i.e: 30℉ is positive and -30℉ is negative.)

If the temperature was -4℉ at 7AM, then it is negative. If it goes up by an amount that is more than 4 then that negative will go up to a positive temperature. In this case: At 9AM it was 8° warmer.

Warmer is a keyword. If it is warmer by an amount, Negative temperatures will go up to a positive and positive temperature will just go up. If it gets cooler, negative temperatures will go down further and positive temperatures will go down to a negative.

So lets work out this problem with our newfound knowledge.

-4° F at 7AM

8°  warmer at 9AM

-4 + 8 = 4.

The temperature was 4°  at 9AM.

-Snooky

7x -2(x-11)=-103
what is x

Answers

Answer:

the answer is x=−25

Step-by-step explanation:

hoped I helped:)

Answer:

7x-2x+22=-103

5x. =-103-22

5x =-125

X.=-25

24, 12, 10, 15, 10, 22, 12
mean:
median:
mode:
range:
3) 14, 9, 20, 5, 17, 13
mean:
15
median:
mode:
range:
4) 21, 15, 16, 25, 13, 18
mean:
median:
mode:
range:
5) 20, 17, 10, 31, 25, 18, 12
mean:
median:
mode:
range:​

Answers

Answer:

ok

Step-by-step explanation:

7mean

12median

12mode

14range

15 range

no mode

13.5median

13mean

range 12

18 mean

17 median

no mode

no mode

19 mean

18 median

21 range

name the quadrilateral

Answers

Answer:

Step-by-step explanation:

Quadrilaterals

Square

Rectangle

Rhombus

Trapezoid

Parallelogram

Which of the following is equivalent to
8/9

Answers

the answer is b ! ;)

What does b equal -3b-15 > -24

Answers

Step-by-step explanation:

Ans: b<3. I hope this helps.

What is the measure of angle b in degrees?

Answers

Angle b should be 119 degrees

Answer:

119

Step by Step:

180-112=68, 68+51=119, 180-119=61, 180-61=119

The volume of the rectangular prism is 295.68 in. What is its width?
6.4 in.
11 in.

Answers

Answer: 4.2 in³

Step-by-step explanation: We already know the Height, Length, and he volume, but we don't know the width. To find the width:

1. Find the values. 295.68, 6.4, and 11 are all the values.

2. Multiply the Length and Height.

6.4 × 11 = 70.4

3. Calculate the Width by dividing the volume by the product of the length and height

295.68 ÷ 70.4 = 4.2

Hence, 4.2in³ is the missing width.

Let me know if you have any questions.

~ Lily, from Brainly.

Given the first term and the common ratio of a geometric
sequence find the first five terms and the explicit formula.
a1 = - 4, r = 6

Answers

Answer:

331776

Step-by-step explanation:

The formula for geometric

sequence is given below

ar^n-1

Where a= first term, r= common ratio

From the question, a1 = - 4, r = 6 , n= 5

Then if we substitute, we have

ar^n-1

5th term= ar^n-1

= (-4×6)^(5-1)

=-24 ^ 4

=331776

Hence, the first five terms is =331776

The formula is 5th term= ar^(5-1)

Simplify the following expression: 6c - 9c - 8
pls show work so i can write down

Answers

Answer:

[tex] - 3c - 8[/tex]

Step-by-step explanation:

1) Collect like terms.

[tex](6c - 9c) - 8[/tex]

2) Simplify.

[tex] - 3c - 8[/tex]

Therefor, the answer is -3c - 8.

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