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2 years ago

Two numbers are in ratio s:t .if the first is a,find the second

Mathematics

1 answer:

Whitepunk [10]2 years ago

7 0

Answer:

The second number is a*t/s

Step-by-step explanation:

s/t = a / x Let x be the second number.

sx = at divide by s

x = at/s

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Jacob is a plumber. Due to increased material costs, he puts all his prices up by 7%. He now chargers R320 per hour for her serv

Lorico [155]

Answer:

R290.1

Step-by-step explanation:

Let

x = charge before he put his prices up

New charge = R320

Percentage increase in price = 7%

x + 7% of x = 320

x + 0.07 * x = 320

x + 0.07x = 320

1.07x = 320

x = 320/1.07

x = 299.06542056074

Approximately

x = R290.1

Charge before he put his prices up = R290.1

4 0

2 years ago

Find the midpoint of (-5,12) and (3,-6)

exis [7]

Answer:

mid point: (4,5)

hope that helps :)

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Two cars leave town at the same time and travel in opposite directions. Speed of car A is 12 km/h more than car B. They are 312k

Zina [86]

Answer:

Speed of car B is 33 km/h and speed of car A is $45\,\,km/h$

Step-by-step explanation:

Let speed of car B be $x$ km/h

Speed of car A is 12 km/h more than car B.

Therefore,

Speed of car A = $(12+x)$ km/h

Distance = Speed × Time

Distance travelled by car A in 4 hours = $4(12+x)$ km = $(48+4x)$ km

Distance travelled by car B in 4 hours = $4x$ km

Also, cars A and B are 312km apart after 4 hours.

$48+4x+4x=312\\48+8x=312\\8x=264\\\\x=\frac{264}{8}\\\\x=33\,\,km/h$

Speed of car B is 33 km/h and speed of car A is $12+x=12+33=45\,\,km/h$

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2 years ago

What is the area of a rectangle on a graph<br> 60 units

stira [4]

Answer:

76 unit

Step-by-step explanation:

because added the rectangle size and added the 60 with 16

6 0

3 years ago

What is the length of x? What is the length of EF? Only enter numbers in the answer boxes below:

ioda

Focus on triangles DFC and DFE:

They are both right triangles because DF is perpendicular to EC

DC=DE

DF is a common side

So, the two triangles are congruent. It follows that CF=FE, and in particular

$8x=3x+15 \iff 5x=15 \iff x=3$

And since x=3, the length of EF is

$3x+15=3\cdot 3+15=24$

8 0

3 years ago

Two numbers are in ratio s:t .if the first is a,find the second​

Two numbers are in ratio s:t .if the first is a,find the second