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4 years ago

How to do this question plz answer me step by step plzz plz

Mathematics

1 answer:

aliya0001 [1]4 years ago

5 0

Answer:

adult cost £7, child cost £2

Step-by-step explanation:

let a represent an adult and c a child , then

2a + 3c = 20 → (1)

a + 4c = 15 → (2)

Multiplying (2) by - 2 and adding to (1) will eliminate a

- 2a - 8c = - 30 → (3)

Add (1) and (3) term by term to eliminate a, that is

- 5c = - 10 ( divide both sides by - 5 )

c = 2

Substitute c = 2 into either of the 2 equations and evaluate for a

Substituting into (2)

a + 4(2) = 15

a + 8 = 15 ( subtract 8 from both sides )

a = 7

The cost of an adult ticket is £7 and a child ticket is £2

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Verdadero o falso a) al reducir a comun denominador las fracciones se sustituyen por otras equivalentes

alexgriva [62]

Answer:

Verdadero

Step-by-step explanation:

Verdadero, cuando cambias dos fracciones para darles un denominador comun la fraccion entera se sustituye para otra que tiene el mismo valor numerico que la original. Por ejemplo tenemos una fraccion 2/6 en la cual tenemos que cambiarle el denominador a uno comun con otra fraccion que es 18. Entonces sustituyemos la fraccion por la siguente fraccion 6/18. Esta nueva fraccion es equivalente a la original y los dos tienen el mismo valor numerico...

2 / 6 = 0.333

6 / 18 = 0.333

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3 years ago

In the rhombus m<1 =160. What are m<2 and m<3? The diagram isn't drawn to scale

Zolol [24]

A rhombus is a parallelogram with four equal sides and two sets of equal angles.

If the m<1=160°, then the angle opposite (3) would also be 160°.

m<3=160°.

Becuase it is a parallelogram, the sum of the measurment of two angles that share a line would be 180 (supplementary).

m<2 and m<4 is 20°.

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3 years ago

Solve Ax+By=C for x. Provide below

Maru [420]

Answer:

x = $\frac{C-By}{A}$

Step-by-step explanation:

Given

Ax + By = C ( isolate the term in x by subtracting By from both sides )

Ax = C - By ( divide both sides by A )

x = $\frac{C-By}{A}$

8 0

4 years ago

Read 2 more answers

The point (3,-4) is on the terminal side of an angle 0. What is cos 0?

aleksandr82 [10.1K]

9514 1404 393

Answer:

C. 3/5

Step-by-step explanation:

The distance from the origin to the given point is ...

d = √(3² +(-4)²) = √(9+16) = 5

The cosine of the angle is the ratio of the x-coordinate to this value:

cos(θ) = x/d

cos(θ) = 3/5

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3 years ago

A cylinder has a base diameter of 16in and a height of 5in. What is its volume in cubic

VashaNatasha [74]

Answer:

1004.8 in³

Step-by-step explanation:

d = 2r => r = d/2 = 16in/2 = 8 inches

V = Ab×h

= π·r²×h

= 3.14·(8in)²×5in

= 1004.8 in³

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3 years ago

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How to do this question plz answer me step by step plzz plz ​

How to do this question plz answer me step by step plzz plz