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3 years ago

Help me please please please please

Mathematics

1 answer:

Monica [59]3 years ago

3 0

Answer:

-4r + 9

Step-by-step explanation:

Join the r terms, you get -4r, join the numbers, you get 9.

Hope it helps!

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Write rational numbers between 0 and 1

rewona [7]

Step-by-step explanation:

Multiply any number with their denominator

0/1×20=0/20

1/1×20= 20/20

Now,

3/20,5/20,6/20,15/20,18/20.....

3 0

3 years ago

Which linear equation can be derived from this proportion?

inn [45]

9514 1404 393

Answer:

D. 2x - 6 = 5x - 45

Step-by-step explanation:

To make the linear equation, we can multiply the given equation by 5(x-3).

$\dfrac{x-9}{x-3}=\dfrac{2}{5}\\\\\dfrac{(x-9)(5)(x-3)}{(x-3)}=\dfrac{2(5)(x-3)}{5}\\\\5(x-9)=2(x-3)\qquad\text{looks like }\textit{cross multiply}\\\\5x-45=2x-6\qquad\text{use the distributive property; matches D.}$

8 0

3 years ago

HELP DUE IN 10 MINS!

Anna007 [38]

Answer:

<u>Diagonals of a kite are perpendicular.</u>

x = 90° - 58° = 32°

y = 90° - 22° = 68°

3 0

3 years ago

Please help with this algebra question

zhannawk [14.2K]

Perimeter: P=24 ft
Lenght: L
Width: W

The length is 2 ft longer than the width:
(1) L= W+2 ft

Perimeter: P=2(W+L)
P=24 ft
2(W+L)=24 ft
Dividing both sides of the equation by 2:
2(W+L)/2 =(24 ft)/2
(2) W+L=12 ft

We have a system of 2 equations and 2 unkowns:
(1) L=W+2
(2) W+L=12

Using the method of substitution: Replacing L by W+2 in the second equation:
(2) W+L=12
W+(W+2)=12
W+W+2=12
2W+2=12

Solving foe W
2W+2-2=12-2
2W=10
Dividing both sides of the equation by 2:
2W/2=10/2
W=5

Replacing W by 5 in the first equation:
(1) L=W+2
L=5+2
L=7

Answers:
What is the width? 5 ft
What is the length? 7 ft

6 0

3 years ago

Red Bookstore wants to ship books from its warehouses in Brooklyn and Queens to its stores, one on Long Island and one in Manhat

arlik [135]

Answer:

red ships books from Brooklyn to long Island = 230

books from Queens to long Island = 1270

books shipped from Brooklyn to Manhattan = 770

books shipped from from Queens to Manhattan = 730

Step-by-step explanation:

Given:

Total books at Brooklyn warehouse = 1,000

Total books at Queens warehouse = 2,000

Books required = 1500 each

total transportation budget = $8460

Costs of shipping each book from Brooklyn to Long Island = $5

Costs of shipping each book from Brooklyn to Manhattan = $1

Costs of shipping each book from Queens to Long Island = $4

Costs of shipping each book from Queens to Manhattan = $2

let the books from Brooklyn to long Island = x

and, y books from Queens to long Island

Therefore,

books shipped from Brooklyn to Manhattan = 1000 - x

and,

books shipped from from Queens to Manhattan = 2000 - y

also,

x + y = 1500

x = 1500 - y ..............(a)

also

total transport = $5x + $1(1000-x) + $4y + $2(2000-y) = $8460

5x + 1000 - x + 4y + 4000 - 2y = 8460

4x + 5000 + 2y = 8460

4x + 2y = 3460

2x + y = 1730 ................(b)

on solving (a) and (b)

2 × (1500 - y) + y = 1730

3000 - 2y + y = 1730

-y = -1270

y = 1270

therefore,

x = 1500 - 1270 = 230

hence,

red ships books from Brooklyn to long Island = x = 230

books from Queens to long Island = y = 1270

books shipped from Brooklyn to Manhattan = 1000 - x = 1000 - 230 = 770

books shipped from from Queens to Manhattan = 2000 - y = 2000 - 1270

= 730

8 0

4 years ago