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JulijaS [17]
3 years ago
6

Work out the value of: 5x - 2y when x = 3 and y = 4

Mathematics
2 answers:
Ira Lisetskai [31]3 years ago
8 0

Answer:

7

Step-by-step explanation:

KATRIN_1 [288]3 years ago
4 0
The expression is 5x - 2y
Use PEMDAS and work out the rest
x = 3 and y = 4
5 x = 5 x 3 = 15
2 y = 2 x 4 = 8
15( x ) - 8 (y) = 7
The answer is 7

Hope This Helps You!
Good Luck Studying :)
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A vendor at the State Fair has learned that, by pricing his deep fried bananas on a stick at $1.00, sales will reach 82 bananas
Tasya [4]

Answer:

Y=-40x+122

Step-by-step explanation:

hello

Due to the nature of the data, it is most convenient to model this problem as a linear function.

To solve this problem we must use the equation that defines a line, then start assigning the corresponding values

y1=82bananas per day

X1=1 dolar

y2=52bananas per day

x2=1.75dolar

line ecuation

y − y 1 = m(x − x 1 )

where

m=slope=\frac{y2-y1}{x2-x1} =\frac{52-82}{1.75-1}=-40

solving:

Y-82=-40(x-1)

Y=-40x+40+82

Y=-40x+122

let's try the result!

Price =1dolar

Y=-40(1)+122=82bananas per day

Price=1.75dolar

Y=-40(1.75)+122=52bananas per day

7 0
3 years ago
What is the answer to -4+x=5x+16
34kurt

Answer: x=-5

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
45 miles in 40 minutes
charle [14.2K]
Hi there!

45 mi to 40 min = 1.125 mi per min

45 ÷ 40 = 1.124

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8 0
3 years ago
A nutritionist planning a diet for a rugby player wants him to consume 3,650 Calories and 650 grams of food daily. Calories from
Tcecarenko [31]

Answer:

300

Step-by-step explanation:

because when multiply then divide all of them then find a percent 300 is your answer

8 0
3 years ago
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Will give brainliest for *BEST* answer!
Nataliya [291]
Use substitution and substitute y into the other equation. One of the equations already gives you y in terms of x, so use that and substitute it into the other equation. y = 3x - 4

Plug into the other equation: -3y = -9x + 12 
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-9x + 12 = -9x + 12
This is an identity. So that means that any value of x makes this equation true. So B.
8 0
3 years ago
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