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3 years ago

I need helpppppppppppppppp

Mathematics

1 answer:

docker41 [41]3 years ago

4 0

Answer:

b 60 -4x 50 +2x=2,800 is 50 +. 2x

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What is rational number

Lorico [155]

I cap this from my book
Hope it can help u

3 0

3 years ago

Farida bought 20 stamps consisting of 20 sen stamps and 60 sen stamps. The total cost of the stamps is RM8.80. How many 20 sej s

krek1111 [17]

Answer:

# of 20cent stamps = 8

Step-by-step explanation:

Let the number 20cent stamps be = x

Let the number 60 cents stamps be = y

Total number of stamps => 20 = x + y ----------- ( 1 )

Total cost of the stamps = 8.80

That is, 0.20x + 0.60y = 8.80 ------------- ( 2 )

( 2 ) => 20x + 60y = 880

=> x + 3y = 44

=> x = 44 - 3y

Substitute x in ( 1 ) => x + y = 20

44 - 3y + y = 20

- 2y = 20 - 44

- 2y = - 24

2y = 24

y = 12

Substitute y = 12 in ( 1 ) => x + y = 20

x + 12 = 20

x = 8

3 0

3 years ago

Identify the graph of the equation (x−1)2+(y+3)2=9.

algol13

Answer:

5/2

Step-by-step explanation:

7 0

4 years ago

Read 2 more answers

what is the 4 called

IrinaVladis [17]

Answer:

The Index

Step-by-step explanation:

A radical expression is composed of three parts:

The Radicand - The number or term under the horizontal bar of the radical symbol.

Radical Symbol - The Radical Symbol √

Index - The number near the "check" part of the radical symbol.

In the given expression, 4 is the index. We are supposed to find the 4th root of x to the third power.

Hope this helps.

6 0

3 years ago

an adult elephant that is 10ft tall casts a shadow that is 15ft long. find the length of the shadow that a 8ft telephone booth c

nadya68 [22]

Answer:

The length of the shadow the telephone booth is 12 ft.

Step-by-step explanation:

Given:

An adult elephant that is 10 ft tall casts a shadow that is 15 ft long.

The length of the telephone booth is 8 ft.

Now, to find the length of the shadow the telephone booth casts.

Let the length of the shadow the telephone booth be $x.$

As given, an adult elephant that is 10 ft tall casts a shadow that is 15 ft long.

So, 10 ft is equivalent to 15 ft.

Thus, 8 ft is equivalent to $x.$

Now, to get the length of the shadow of the booth we get cross multiplication method:

$\frac{10}{15} =\frac{8}{x}$

By cross multiplying we get:

$10x=120$

Dividing both sides by 10 we get:

$x=12.$

Therefore, the length of the shadow the telephone booth is 12 ft.

3 0

4 years ago