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3 years ago

HELLLPPPPP I dont understand this!! Picture is attached!! THANKS

Mathematics

1 answer:

sergij07 [2.7K]3 years ago

8 0

Answer:

27 =x

Step-by-step explanation:

We can use proportions to solve this problem. Put the side of the small triangle over the same side of the large triangle.

x+8 10

------- = -------------------

2x-5 14

Using cross products

14 (x+8) = 10 (2x-5)

Distribute

14x+112 = 20x-50

Subtract 14x from each side

14x-14x +112 = 20x-50-14x

112 = 6x-50

Add 50 to each side

112+50 = 6x-50+50

162 = 6x

Divide by 6

162/6 =6x/6

27 =x

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Elanso [62]

Answer:

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Step-by-step explanation:

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4 years ago

Kiran's bank balance is $320. What is her new bank balance when she takes out $450

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Answer:

Take out means add so

Step-by-step explanation:

320 + 450 = 770$ her new bank balance

8 0

3 years ago

Two skiers are 30 kilometers apart and head towards each other. They meet in 2 hours. If the second skier is 5 kilometers per ho

DENIUS [597]

Answer:

Speed of first skier = 5 km/h

Speed of second skier = 10 km/h

Step-by-step explanation:

Given:

Distance between skiers = 30 km

Time after which they meet = 2 hours

Second skier is 5 km/h faster than the first skier.

To find speed of each skier.

Solution:

Let the speed of first skier be in km/h = $x$

Distance covered in km 2 hours will be = $Speed\times time=x\times 2=2x\ km$

Speed of second skier in km/h can be given as = $x+5$

Distance traveled by second skier after 2 hours will be = $Speed\times time=(x+5)\times 2=(2x+10)\ km$ [Using distribution]

Since, the skiers were 30 km apart initially, so the total distance covered by both of them when they meet after 2 hours will be = 30 km

Thus, we have:

$2x+2x+10=30$

Solving for $x$

$4x+10=30$

Subtracting both sides by 10.

$4x+10-10=30-10$

$4x=20$

Dividing both sides by 4.

$\frac{4x}{4}=\frac{20}{4}$

$x=5$

Speed of first skier = 5 km/h

Speed of second skier = $5+5$ = 10 km/h

8 0

4 years ago

I'm too lazy to figure this out so if u could help that be great! :D just tell me which one it is

vazorg [7]

It could be in meters or centimeters according to how long the desk is. But it's usually meters because cm is short

4 0

3 years ago

Read 2 more answers

Solving equations -2(x + 3)=3(2x-10)

nika2105 [10]

Answer:

x=3

Step-by-step explanation:

3 0

3 years ago