All categories

3 years ago

Evaluate 5x2 – 2y3 when x = 2 and y = 4

Mathematics

1 answer:

egoroff_w [7]3 years ago

6 0

Answer:

-4

Step-by-step explanation:

(substitute in x=2 and y=4 soo...)

5 x 2 x 2 = 20

2 x 4 x 3 = 24

20 - 24 = -4

You might be interested in

How can you reduce 2 15/24

Diano4ka-milaya [45]

2 5/8, you dived 15 and 24 by the gcf, 8

8 0

3 years ago

Read 2 more answers

Write the equation using function notation f(x). then find f(0)<br><br> 2x^2 - 3y = 6

Grace [21]

$\quad \huge \quad \quad \boxed{ \tt \:Answer }$

$\qquad \tt \rightarrow \: f(0) = -2$

____________________________________

$\large \tt Solution \: :$

$\qquad \tt \rightarrow \: 2 {x}^{2} - 3y = 6$

$\qquad \tt \rightarrow \: 3y + 6 = 2 {x}^{2}$

$\qquad \tt \rightarrow \: 3y = 2 {x}^{2} - 6$

$\qquad \tt \rightarrow \: y = \cfrac{2 {x}^{2} - 6 }{3}$

$\qquad \tt \rightarrow \: y = \cfrac{2 {}^{} }{3} {x}^{2} - 2$

[ here, y can be replaced with f(x) because y is a function of x ]

$\qquad \tt \rightarrow \: f(x) = \cfrac{2 {}^{} }{3} {x}^{2} - 2$

$\large\textsf{Find f(0):}$

$\qquad \tt \rightarrow \: f(0) = \cfrac{2 {}^{} }{3} {(0)}^{2} - 2$

$\qquad \tt \rightarrow \: f(0) = 0 - 2$

$\qquad \tt \rightarrow \: f(0) = - 2$

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

8 0

2 years ago

Julio has started his very own floral business. He sells centerpieces for $19.50 each. His fixed costs are $500 per month, and e

Phantasy [73]

The total cost, C, is the sum of the cost to produce the centerpieces and the fixed cost. The equation for C is C = 8n + 500.

The total revenue, R, of Julio's floral business is the product of the cost per centerpiece and the number of centerpieces sold. The equation for R is R = 19.50n.

8 0

3 years ago

Read 2 more answers

Please help :) thank you!

const2013 [10]

Answer:

Step-by-step explanation:

just plug in the formula

5 0

3 years ago

A laptop has a listed price of $892.99 before tax. If the sales tax rate is 8.75%, find the total cost of the laptop wi the sale

Gnesinka [82]