-4x+y=23 and 4x-9y=-15

Answers

Answer 1

Answer:  x= -6; y= -1

Step-by-step explanation:

-4x + y = 23

4x - 9y = - 15

-4x + y = 23

      y = 23 + 4x     [Add 4x to both side]

4x - 9(23 + 4x) = - 15

4x - 207 - 36x = - 15

-32x - 207 = -15

-32x = 192             [Add 207 to both side]

    x = -6                [Divide -32 from both side]

-4x + y = 23

-4(-6) + y = 23          [Plug in -6 for x]

24 + y = 23              [Subtract 24 from both side]

       y = -1


Related Questions

A line that includes the point (9, 10) has a slope of -1/9 what is its equation in point-slope
form?

Use the specified point in your equation. Write your answer using integers, proper fractions,
and improper fractions. Simplify all fractions.

Answers

You need to add by the root and then you will get the answer

Given g(x) = -x – 4, solve for x when g (x)= -4

Answers

This answer for this is 0 because they will cancel each other out

question : Find 23% of 700kg

Answers

Answer:

[tex]700kg \times \frac{23}{100} \\ = 161[/tex]

Answer:

161 kilograms

Step-by-step explanation:

change 'of' into a multiplication sign

23% × 700kg

change 23% into a decimal

0.23 × 700kg= 161

A rectangular prism has a length of 7 feet, a height of 17 feet, and a width of 4 feet. What is its volume, in
cubic feet?

Answers

Answer: 476 ft³

Step-by-step explanation:

Volume = width x hight x length

        V = 4 ft x 17 ft x 7 ft

        v  = 476 ft³

Solve for x. Round answers to the nearest tenth.

Answers

Answer:

Step-by-step explanation:

sin54=22/x

xsin54=22

x=22/(sin54)

x=27.2

x = 27.2
please mark brainliest

What is 591x37+125-16
Instant brainliest to HXH fans, proof if you name the 6 most important characters and the full name of the show

Answers

Answer:

Leorio, Gon, Killua, Kurapika, Hisoka, and Ging

Step-by-step explanation

Answer:

It's 21976 Gon! >:3

well- in my opinion i think its u, lol me killua, Leorio //side note: ofc the doctor//coOk kURAPIKA, HISOKA- //bUNGee gUM// i dont gaf about my brother illumi so the lost father //gINg// is it >:3

Step-by-step explanation:

:3

Consider this expression. x-4/2(x+4)

Answers

Answer:

Option A

Step-by-step explanation:

We will simplify the expressions given in the options first,

x² - 16 = (x - 4)(x + 4)

2x + 8 = 2(x + 4)

x² + 8x + 16 = (x + 4)²

Option A

[tex]\frac{x^2-16}{2x+8}[/tex] × [tex]\frac{x+4}{x^2+8x+16}[/tex]

= [tex]\frac{(x+4)(x-4)}{2(x+4)}\times \frac{(x+4)}{(x+4)^2}[/tex]

= [tex]\frac{x-4}{2(x+4)}[/tex]

Option B

[tex]\frac{2x+8}{x^2-16}[/tex] ÷ [tex]\frac{x^2+8x+16}{x+4}[/tex]

= [tex]\frac{2(x+4)}{(x+4)(x-4)}[/tex] ÷ [tex]\frac{(x+4)^2}{(x+4)}[/tex]

= [tex]\frac{2}{(x-4)}\times \frac{1}{(x+4)}[/tex]

= [tex]\frac{2}{x^2-16}[/tex]

Option C

[tex]\frac{x^2-16}{2x+8}[/tex] ÷ [tex]\frac{x+4}{x^{2}+4x+16}[/tex]

= [tex]\frac{(x-4)(x+4)}{2(x+4)}\times \frac{(x+4)^2}{(x+4)}[/tex]

= [tex]\frac{(x-4)(x+4)}{2}[/tex]

Option D

[tex]\frac{2x+8}{x^2-16}\times \frac{x^2+8x+16}{x+4}[/tex]

= [tex]\frac{2(x+4)}{(x-4)(x+4)}\times \frac{(x+4)^2}{(x+4)}[/tex]

= [tex]\frac{2(x+4)}{(x-4)}[/tex]

Therefore, Option A is the answer.

Brianna has six bags of soil filling one flower pot requires 1/3 of a bag of soil how many flower pots can be filled with the six bags

Answers

Answer:

well, 1/3 of a bag per pot means 3 pots per bag, so 6 bags times 3 pots per bag.

3 x 6= 18 pots

Find the Perimeter of the parallelogram with endpoints A(0, 2), B(2,5), C(5,0), and D(3,
-3).

Answers

Answer:

6 + 4 + 6 + 4 = 20

Step-by-step explanation:

Using the end points is very helpful from 1 end point to the other count as much as the squares as possible along the line until it reaches the other endpoint.

Find the distance between the points (-2, -4) and (-6, -8). Round your answer to to the nearest tenth.

Answers

Answer:

d=5.7

Step-by-step explanation:

[tex]d=\sqrt{(x2-x1)^{2} +(y2-y1)^{2} }[/tex]

[tex]d=\sqrt{-6(-2)^{2}+(-8-(-4)^{2} }[/tex]

[tex]d=\sqrt{(-6+2){^{2}+(-8+4)^{2} } }[/tex]

d=[tex]\sqrt{(-4)^{2}+(-4)^{2} }[/tex]

d=[tex]\sqrt{16+16}[/tex]

d=[tex]\sqrt{32}[/tex]

d=5.656 =5.7

Suppose a normal distribution has a mean of 266 and a standard deviation of
12. What is P(x>278)?

Answers

Answer:

I think the answer is P(x>178)

Step-by-step explanation:

Answer: 0.16

Step-by-step explanation: Quizzed


A father is 28 years older than his daughter. In six years' time, he will be three times her age. Find their present ages.


Please include your working out!!

Answers

Answer:

Daughter's age = 6Father's age = 34

Step-by-step explanation:

Let the age of daughter be x

Then the age of father will be x + 28

In 6 years time:-

The age of father = x + 28 + 2 = 30 + x

The age of daughter = x + 6

According to the question,

Father will be three times the age of his daughter.

30 + x = 3(x + 6)

30 + x = 3x + 18

x - 3x = 18 - 30

-2x = - 12

x = - 12/-2

x = 6

So therfore,

Daughter's present age = 6 years

Father's present age = 34 years

Hope this helps :)


A father is 28 years older than his daughter. In six years' time, he will be three times her age. Find their present ages.


Please include your working out!!

-(4-x)=3/4(x-6)
solve for x
show work please!!!
(not test, this is hw)

Answers

-4+x=3/4x-4.5

x=3/4x-.5

.25x=.5

x=2

If you help me u are the best ;)​

Answers

Answer:

Area = (8 + 2x)² mi²

Step-by-step explanation:

Length of the side of a park = 8 mi

Width of the road around the park = x mi

Length of one side of the park with the road = (8 + 2x) mi

Area of the park with road = (side)²

                                            = (8 + 2x)²

Therefore, combined area of the park and road is (8 + 2x)² square miles.

Pls help asap I have 10 min left to answer :(

Answers

Answer:

A. 1 foot

Step-by-step explanation:

Answer:

your answer will be A.1 foot

Step-by-step explanation:

hope it helps you

have a great day

Four baby socks can be made from 1/3 skein of yarn. How many baby socks can be made from a whole skein?

Answers

Answer:

12

Step-by-step explanation

4x3=12

Answer:

1-1/3=0.66666666....….

0.67*4= 2.68

***Question is on the picture ​

Answers

Answer:

M(4, -3)

Step-by-step explanation:

Reflecting over the x-axis is simple:

If the x is positive, the reflection would be negative and vice versa.

In this case, the y isn't affected since it's only reflecting over the x-axis.

So, M is at the coordinates (4, -3)

Jamie writes -2°C > -5°C to compare the temperature on two January days. Explain why you agree or disagree with him

Answers

Answer:

I agree with Jamie

Step-by-step explanation:

Given the inequality expression -2°C > -5°C, to compare both temperatures, we are to determine whether we agree or disagree with him.

Note that negative values that are closer to zero on the number line are greater than those that are far from zero. Hence, since -2 is closer to zero on the number line than -5, this means that -2 is greater than -5 hence I agree with Jamie's temperature value comparison.

(b) What is 35% of 60?

Answers

Answer:

21

Step-by-step explanation:

its just... 21 its pretty simple

The answer is 21

Here’s how to solve it:
Convert the percent into a decimal by moving the decimal 2 places to the left.
Then multiply the decimal (.35) by 60 and you get your answer
21 !

SOMEONE PLEASE HELP ME WITH THIS ILL GIVE YOU BRAINLY IF YOU GET IT RIGHT ALSO PLEASE EXPLAIN HOW YOU GOT THE ANSWER!!!

Answers

answer

B - 1/4

explanation

246 rounds up to 250. 1000/250=4, meaning 1/4 of the people surveyed liked green.

because 1/4 of the people surveyed so far liked green, it’s most likely that the next person will like green.

can anyone help this is due todaaaaaaay

Answers

Answer:

A. 15

Step-by-step explanation:

Use 1/3 multiply length times width times height then divide

solve 3x+4x= totally not free pointz

Answers

The answer is 8x for this question

6+x^2)^2. Please solve for me

Answers

Answer:

36 + x^4

Step-by-step explanation:

6^2 + x^2^2

36 + x^4

Hope that helps!

If the volume of the cone is 250 feet, what is the missing length?
Use 3.14 for it and round the answer to the nearest hundredth.
1
1
h=?
r=6 feet
feet.
The missing length is

Answers

Answer:

6.63

Step-by-step explanation:

Investors buy a studio apartment for $240,000. Of this amount, they have a down payment of
$48,000. Their down payment is what percent of the purchase price? What percent of the purchase
price would a $12,000 down payment be?
Their down payment is
% of the purchase price.

Answers

Answer:

Part A

The down payment of $48,000 is 20% of the purchase price

Part B

A $12,000 down payment will be 5% of the purchase price

Step-by-step explanation:

A percentage is the expression of the product of the ratio of two numbers and 100

The amount the investors buy the studio apartment = $240,000

The amount the investors have as down payment = $48,000

Part A

The ratio of the down payment the investors have and the amount the investors buy the apartment = 45,000/240,00 = 0.2

Therefore, their down payment is 0.2×100 = 20% percentage of their purchase price

Their $48,000 down payment is 20% of their purchase price

Part B

The percentage of the purchase price a $12,000 down payment would be is given as follows;

12,000/240,000 × 100 = 5%

Therefore, a $12,000 down payment will be 5% of the purchase price.

I need help ASAP
questions:
1. what is the measure of angle K?
2. What is the measure of angle M?
3. what is the value of "x"?​

Answers

1) k is 180*-120*=60*
2)M is 180*-40*=140*

An interpretation of data is?

Answers

Answer:

Data interpretation refers to the implementation of processes through which data is reviewed for the purpose of arriving at an informed conclusion. The interpretation of data assigns a meaning to the information analyzed and determines its signification and implications.

Step-by-step explanation:

Answer:

The interpretation of data assigns a meaning to the information analyzed and determines its signification and implications.

Step-by-step explanation:

Hope that helps :)

please help me find the value of x

Answers

Answer:

[tex]10 \sqrt{3} [/tex]

Step-by-step explanation:

Given Question,

To find the value of x.

Solution:

According to Pythagoras Theorem-

[tex] {20}^{2} = {10}^{2} + {x}^{2} [/tex]

[tex] = > 100 + {x}^{2} = 400[/tex]

[tex] = > {x}^{2} = 400 - 100[/tex]

[tex] = > {x}^{2} = 300[/tex]

[tex] = > x = \sqrt{300} [/tex]

[tex] = > x = 10 \sqrt{3} [/tex]

Result:

Hence, the required value of x is

[tex] 10\sqrt{3} [/tex]

Write as a square of a binomial

4.8xy+36y^2+0.16x^2

Answers

(15y+x)^2

That’s your answer. I hope i helped!

Help pls it’s just one simple question <3 just anwser 3

Answers

haven’t done this in a while but i’m pretty sure it’s answer C shawty. If you need an explanation i’m happy to give one but yes
Answer C
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