help me please somebody

Answer:

y=3x-2..... i

x-y=4...... ii

x-4=y

Substituting the value of y in equation i,

x-4=3x-2

2-4=3x-x

-2=2x

x=-1.

From ii,

-1-4=y

y=-5.

x=-1, y=-5

Step-by-step explanation:

brainest please

Answer:

9/100

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

9%/100=9

so it should be 9.

Answer:

x = 0

Step-by-step explanation:

Answer:

Microsoft = 89.5 million

Time Warner = 77.5 million

Yahoo = 82.5 million

Google = 34.5 million

Step-by-step explanation:

Given

z − u = 3(x − y) + 12

x + y = 50 + z + u

x − y + z − u = 48.

From the question, we also understand that

u + x + y + z = 284

Required

Solve for u, x, y and z

Substitute 3(x - y) +12 for z - u in the third equation

x − y + z − u = 48.

(x - y) + 3(x - y) = 48

4(x - y) = 48

Divide both sides by 4.

x - y = 12

Make z + u the subject of formula in u + x + y + z = 284

z + u = 284 - (x + y)

Substitute 284 - (x + y) for z + u in the second equation

x + y = 50 + z + u

x + y = 50 + 284 - (x + y)

(x + y) + (x + y) = 50 + 284

2(x + y) = 334

Divide both sides by 2

x + y = 167

Make x the subject of formula

x = 167 - y

Substitute 167 - y for x in x - y = 12

167 - y - y = 12

167 - 2y = 12

-2y = 12 - 167

-2y = -155

2y = 155

y = 77.5

Solve for x in x = 167 - y

x = 167 - 77.5

x = 89.5

Recall that:

z − u = 3(x − y) + 12

z + u = 284 - (x + y)

Substitute the values of x and y in the above expressions.

z − u = 3(x − y) + 12

z - u = 3(89.5 - 77.5) + 12

z - u = 3(12) + 12

z - u = 36 + 12

z - u = 48

Make z the subject

z = 48 + u

Similarly,

z + u = 284 - (x + y)

z + u = 284 - (89.5 + 77.5)

z + u = 284 - 167

z + u = 117

Substitute 48 + u for z

48 + u + u = 117

48 + 2u = 117

2u = 117 - 48

2u = 69

u = 34.5

Substitute 34.5 for u in z = 48 + u

z = 48 + 34.5

z = 82.5

The size of audience of each of the four companies at the end of that year are;

Micro-soft = 89.5 million

Time Warner = 79.5 million

Yah oo = 34.5 million

Goo gle = 82.5 million

We are given the equations;

z − u = 3(x − y) + 12 ----(1)

x + y = 50 + z + u   ----(2)

x − y + z − u = 48    ----(3)  

Now, we are told that the combined 4 audience is 284 million users. Thus;

u + x + y + z = 284    ----(4)  

Put 3(x − y) + 12 for z - u in the eq 3 to get;

(x - y) + 3(x - y) = 48

x - y + 3x - 3y

4x - 4y = 48

Divide both sides by 4 to get;

x - y = 12   ----(5)

Make z + u the subject of formula in eq 4 to get;

z + u = 284 - (x + y)  ---(4b)

Put 284 - (x + y) for z + u in the eq 2;

x + y = 50 + 284 - (x + y)

x + y = 334 - x - y

Add x + y to both sides to get;

x + y + x + y = 334

2x + 2y = 334

Divide both sides by 2 to get;

x + y = 167 -----(6)

Add eq 5 to eq 6 to get;

2x = 167 + 12

2x = 179

x = 179/2

x = 89.5

Put 89.5 for x in eq 6 to get;

89.5 + y = 167

y = 167 - 89.5

y = 77.5

Put the values of x and y in eq(1) and eq(4b) to get;

z - u = 3(89.5 - 77.5) + 12

 z - u = 48  ---(7)

Also,

z + u = 284 - (89.5 + 77.5)

z + u = 117   ---(8)

Add eq 7 to eq 8 to get;

2z = 165

z = 165/2

z = 82.5

Put 82.5 for z in eq 8 to get;

82.5 + u = 117

u = 117 - 82.5

u = 34.5

Read more at; https://brainly.com/question/14526969

Answer:

A. x-axis

Step-by-step explanation:

Beacuse the 0 is in the x spot, (x,y)

Answer:

Pie Chart

Step-by-step explanation:

The pie chart is a circular representation of data. It is divided into slices in order to show the distribution of data presented.

In a pie chart, the angle subtended by each slice is proportional to the magnitude of data represented.

Pie charts are most useful in the representation of categorical data such as the region of the country in which a student lived prior to enrolling in the university.

Answer:

9

Step-by-step explanation:

Answer:

7:43

Step-by-step explanation:

Answer:

100

Step-by-step explanation:

because... LOGIC

Answer:

446.15

Step-by-step explanation:

C + 273.15 = K

So 173C + 273.15 = 446.15K

Answer:

(a) He would need 76 feet of fencing

(b) Kevin should buy the packaged box of 90 feet of fencing for $950.

(c) How much does he save?

For every 1 feet of packaged fencing Kevin buys, he saves $1.94 naira.

Step-by-step explanation:

(a) At the outside edge of the pool is a protective fence. How many feet of fencing would be needed to surround the pool area?

From the question, we are told that the swimming pool measures:

14-1/2 feet wide and 23-1/2 feet long.

Perimeter of a fence = 2(L + W)

= 2( 14-1/2 + 23-1/2)feet

= 76 feet

This means he need 76 feet of fencing.

(b) Kevin discovers that he can buy a packaged box of 90 feet of fencing for $950 or he can buy cut-to-order fencing that costs $12.40 per foot. Which type of fencing should he buy?

If : For cut to order fencing

1 foot = $12.40

76 feet =

Cross Multiply

= 76feet × $12.40/1 foot

= $942.4

This means that the cut to order fencing would cost him $942.40

The packaged box of fencing cost $950 for 90 feet of fencing. This is cheaper than the cut to order fencing and he would have extra feet of fencing(14 feet) .

Therefore, Kevin should buy the packaged box of 90 feet of fencing for $950.

How much money does he save?

For the cut to order box

1 feet = $12.40

For the packaged fence,

90 feet = $950

1 feet = x

= 950/90

= $10.555555556

≈ $10.56

Hence, 1 feet of packaged fence = $10.56

Subtracting $10.56 from $12.40

= $12.40 - $10.56

=$ 1.94

Therefore, for every 1 feet of packaged fencing Kevin buys, he saves $1.94 naira.

This means:

1 feet (packaged fence) = $10.56

76 feet = x

= 76 × $10.56

= $802.56

Answer:

3+12i

Step-by-step explanation:

The difference of 5+3i and 2 + 1999 can be calculated as follows

= 5+3i - 2+9i

Collect the like terms

= 5-2+3i+9i

= 3+12i

Hence the difference of 5+3i and 2+9i is 3+12i

Answer:

The Great Bath is one of the well-known structures among the ruins of the ancient Indus Valley Civilization at Mohenjo-daro in Sindh, Pakistan. Archaeological evidence indicates that the Great Bath was built in the 3rd millennium BCE

Answer:

the first line

Step-by-step explanation:

because the second line should be -3x=30

Answer:

I believe he kept 160 pennies.

Step-by-step explanation:

10% of 200 is 20 (200 divided by 10) so 20% is 40 pennies. 200 minus 40 is 160 (pennies)

Answer:

-3 2/3 < -3 5/8 so -3 2/3 is lesser

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

kcf

8/9 x 9/2= 72/18

=4

Answer:

well 10,000 is not grater than 23,879?

Step-by-step explanation:

the diffrence between them is 13879 so the correct answer is A

HOPE THIS HELPS

Answer:

1105km

Step-by-step explanation:

d=s×t

=65kmh^-1×7

=1105km

Answer:

Then we divide that amount by the original older value and get 1.3035. Now we must convert that number

Answer:

depends on how much it cost

Step-by-step explanation:

but id asuume shed owe some money

Answer:

60 dollars

Step-by-step explanation:

if there is a 60 dollar bill he will pay 60 dollars

Answer:

B and E

Step-by-step explanation:

^^^^^

Answer:

5,6 i tink

Step-by-step explanation:

Answer:

(-1,5)

Step-by-step explanation:

mid point formula Is x + x divided by 2 and. y + y divided by 2

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

[tex]y = \frac{1 + 9}{2} [/tex]

The answer fam is........-5(x-4)

Answer: Choice [D]

Step-by-step explanation:

Hii, do you need to factor the expression "-5x+20"? Let me help you out! (:

Note that -5x and 20 have a -5 in common. Let's factor it out! (:

To factor it out, we first need to divide -5x and 20 by -5.

is what we obtain

Next we put parentheses around -x+4

is what we obtain

Now, we put 5 outside the parentheses

[tex]\Large\boldsymbol{\therefore,\qquad\ Choice\:\:\:\:[D]\;is\;correct}[/tex]

--

Hope I helped! Best wishes.

⚜Reach far. Aim high. Dream big. ⚜

[tex]\underbrace[/tex]

Answer:

38.46 (Rounded: 38.5)

Step-by-step explanation:

67.32-2(14.43)=38.46

Answer:

your answer would be idspkdijajsljfpajs[r

Step-by-step explanation:

because if u add  [tex]2/3 +5 = 17[/tex]  it would be idspkdijajsljfpajs[r