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noname [10]
3 years ago
11

4x+7y=19 Y=x+9 U must solve it in substitution method

Mathematics
1 answer:
Hunter-Best [27]3 years ago
8 0
The answer is (-4, 5) x= -4 y= 5
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Layla and Olivia are going to buy supplies for a party they buy decorations for 47.$ off with a 20% off coupon and food for $281
bagirrra123 [75]

Answer: $242.25

Step-by-step explanation: 20% off  of .47 is around .32

$281.93-$40+.32= $242.25

4 0
3 years ago
How can you show that two objects are proportional with an equation
V125BC [204]
You can use a plot diagram to plot the points and if they all go straight through the origin then it is proportional :)
5 0
3 years ago
Which expression can be used to convert 22 Australian dollars to US dollars
PolarNik [594]
<h2>Answer</h2>

The expression is

AUD/1.38 = USD

<h2>Explanation</h2>

Step by step conversion is as following;

1 USD = 1.38 AUD, or its reciprocal

Where,

1.38 recent currency rate

AUD = Australian dollar

USD = US dollar

So, by rearranging

1 AUD = 1/1.38 USD

Then

22AUD/1.38 = 15.94 USD

The answer is

22A UD = 15.94 USD


7 0
3 years ago
8x – 9y = –61<br> x +9y = 43<br> what is the y coordinate?
marishachu [46]

Answer:

The answer is y=5

Step-by-step explanation:

9x=-18

x=-2

-2+9y=43

9y=45

y=5

4 0
3 years ago
If the length of a rectangular yard is represented by w+4 and the width by 2w+5, write a simplified expression in terms of w tha
adell [148]

Answer:

P = 6w + 18

Step-by-step explanation:

A rectangle is a plane shape having a LENGTH and a WIDTH.

Length (l) = w + 4

Width (w) = 2w + 5

To write a simplified equation in terms of w to represent the total length, let's used the idea of a PERIMETER of a RECTANGLE.

Perimeter (P) = 2 ( l + b)

Where l = length= w + 4

Where b = width = 2w + 5

P = 2( w + 4 + 2w + 5)

P = 2( 3w + 9)

P = 6w + 18

6 0
3 years ago
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