Solve for y.

2x+3y=20
-2x+y=4

The splitted bill of  £180 into a 7 : 5 ratios are  £105 and  £75 respectively.

A ratio is a comparison between two similar quantities in simplest form.

Proportions are of two types one is the direct proportion in which if one quantity is increased by a constant k the other quantity will also be increased by the same constant k and vice versa.

In the case of inverse proportion if one quantity is increased by a constant k the quantity will decrease by the same constant k and vice versa.

Given, A bill has to be split £180 in the ratio of 7 : 5.

∴ One part is (7/7 + 5)×180.

= (7/12)×180.

= 105.

Another part is (5/7 + 5)×180.

= (5/12)×180.

= 75.

learn more about proportion here :

https://brainly.com/question/7096655

#SPJ2

Answer:

1- 72 miles

2-$3

3- 50(0.50 x c)

Step-by-step explanation:

For Number 1 we have to do 55 divided by 60 which is about 0.90 and then we multiply that by 1 hour and 20 minutes which in minutes is 80. 0.90 x 80 = 72 exactly.

For Number 2 we have to divide 36.25 by 11.5 rounded is 36/12 whish is 3.

For number 3 c stands for number of channels

Hope i could help! :DD

Answer:

you are correct 1/2 is the correct answer

Question:What is the probability of flipping a coin 2 times and getting 2 heads?

Answer: 1/2

Answer:

What figure lol

Step-by-step explanation:

Answer:

50

Step-by-step explanation:

180 - 150 = 30(the vertical angles)

30 + 50 + 2x = 180

=> 2x = 100

=> x = 50

Answer:

the answer is 14 units

Step-by-step explanation:

you're welcome

Answer:

m=-5

Step-by-step explanation:

distribute -3: -3m+6=21

subtract 6 from both sides: -3m=15

divide by negative three: m=-5

Answer:

m = -5

Step-by-step explanation:

-3(m-2)=21

-3m + 6 = 21

-3m = 15

         15

m = --------

         -3

m = -5

Answer:

its choice 2

Step-by-step explanation:

6b is the amount of bracelets that were bought, times the cost of 1 bracelet. 3s is the cost of 1 pair of socks times the amount of socks bought. when you add together 6b+3s it should =300

Answer: 15,712.15 ft^3 ;)

Answer:15712.2

Step-by-step explanation:

Answer:

x = ±11/4

Step-by-step explanation:

Rewrite -16x^2+121=0 as 16x^2 - 121=0 and then as 16x^2 = 121.

Take the square root of both sides.  This returns 4x = ±11, and so:

x = ±11/4

Answer:

71.3

Step-by-step explanation:

trust me.. delta 2021

Answer:

113.04

Step-by-step explanation:

the formula for the lateral surface area of a cone (all i mean is the area up the sides and not the area of the circle on the of the cone) is the

slant height times r times pi        

so put in the variables(diameter/2 = r so 12/2 = 6)

6*6*3.14 = 113.04

Answer:

28.6

Step-by-step explanation:

Pathagorem therom

Answer:

B:b=-2

Step-by-step explanation:

Answer:

18.4 km^2

Step-by-step explanation:

Surface area of a square pyramid = A=a²+2a√ h²

a = side length

h = slant height

3² + 2(3) x√ (9/4) x 3²

Answer:

undefined

Step-by-step explanation:

(-7, -7) and (-7, 1)

To find the slope of the line, we use the slope formula: (y₂ - y₁) / (x₂ - x₁)

Plug in these values:

(1 - (-7)) / (-7 - (-7))

Simplify the parentheses.

= (1 + 7) / (-7 + 7)

Simplify the fraction.

8/0

= undefined

Our line is a vertical line, which has an undefined slope.

Hope this helps!

Answer:

p ≥ 1500

Which means:

p is equal to or larger than 1500.

Step-by-step explanation:

We know that the player needs to get, at least, 1500 points.

So if p represents the number of points that the player has, the minimum value of p needs to be 1500. (But P can be larger)

So we already know that we need to use the symbol ≥, because p = 1500 is also a possible solution.

Then the inequality that represents this is:

p ≥ 1500

Which means:

p is equal to or larger than 1500.

this trangle is square angle trangle 90

19+24=43

90-43=47 answer is 47

Answer:

tan 24 degrees = perpendicular/ base

tan 24= x/19

0.445= x/19

0.445×19 = x

x = 8.445, answer

Answer:

So talk in here

Step-by-step explanation:

Answer:

The given shape is known as Trapezium or Trapezoid.

Area of trapezium = ½(Sum of parallel dides) × Height

Area = ½ (3 + 6) × 4

Area = (3 + 6) × 2

Area = 9 × 2

Area = 18 m²

[tex] \\ [/tex]

Answer:

Probability (Fraction, Decimal, Percentage)  = 1/8 , 0.125 , 12.5%

Step-by-step explanation:

Total cards = 8 ; numbered 'three, four, five, six, seven, eight, nine, ten'

Prob (Card with number three) = card with no. three / total cards = 1/8

Prob (Card with number four) = card with no. four / total cards = 1/8

Similarly , Prob (A Card with any other number) = 1/8

Fraction Probability = 1/8 ; Decimal Probability = 0.125

Percentage probability = 1/8 x 100 = 12.5%

Answer:

103.75 %

Step-by-step explanation:

[tex] \frac{265.6}{256} \times 100[/tex]

Take 265.6 and divide it by your original number of 256. Now multiply this resultant by 100 to see your final answer rounded to the nearest 10th.

Answer:

256:265*100 =

(256*100):265 =

25600:265 = 96.6

Step-by-step explanation:

Percentage solution with steps:

Step 1: We make the assumption that 265 is 100% since it is our output value.

Step 2: We next represent the value we seek with $x$x.

Step 3: From step 1, it follows that $100\%=265$100%=265.

Step 4: In the same vein, $x\%=256$x%=256.

Step 5: This gives us a pair of simple equations:

100%=256(1)

x%=256(2)

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS

(left hand side) of both equations have the same unit (%);

100%/x% = 256/256

Step 7: Taking the inverse (or reciprocal) of both sides yields

x%/100%=256/256

-->x=96.6%

Therefore, 256 is 96.6% of 265

3/1 tama poyong unna nag answer

Answer: stay safe !

Step-by-step explanation:

Answer:

it was 9

Step-by-step explanation: