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3 years ago

Simplify 2x^2y+xy+5y^2-7x^2+4y^2

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

6 0

Answer:

2x^2y+9y^2-7x^2

Step-by-step explanation:

Just combine like terms.

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If apples cost $1.08 per pound, how much would 3.8 pounds cost?

DENIUS [597]

Answer:

4.10

Step-by-step explanation:

1.08 * 3.8 = 4.104

but money is 2dp so...

4.10

8 0

2 years ago

Please explain how to solve the problem.

EastWind [94]

Answer:

Part 1) $f(125)=6$

Part 2) $f(-64)=-3$

Step-by-step explanation:

we have

$f(x)=\sqrt[3]{x} +1$

Part 1) Find f(125)

we know that

f(125) is the value of the function f(x) when the value of x is equal to 125

For x=125

substitute in the function

$f(125)=\sqrt[3]{125} +1$

Remember that

$125=5^{3}$

substitute

$f(125)=\sqrt[3]{5^{3}} +1$

Applying the power of rule

$\sqrt[3]{5^{3}}=(5^{3})^{\frac{1}{3}}= (5)^{3*\frac{1}{3}}=5$

substitute

$f(125)=5 +1=6$

Part 2) Find f(-64)

we know that

f(-64) is the value of the function f(x) when the value of x is equal to -64

For x=-64

substitute in the function

$f(-64)=\sqrt[3]{-64} +1$

Remember that

$-64=-4^{3}$

substitute

$f(-64)=\sqrt[3]{-4^{3}} +1$

Applying the power of rule

$\sqrt[3]{-4^{3}}=(-4^{3})^{\frac{1}{3}}= (-4)^{3*\frac{1}{3}}=-4$

substitute

$f(-64)=-4 +1=-3$

5 0

4 years ago

PLEASE HELP!!

Alex

Answer:

$7.39

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

2/3 is less than 2/6

Alexandra [31]

False, 2/6 is less than 2/3

6 0

3 years ago

Read 2 more answers

A pound of rice crackers costs $2.88.Matthew purchased 1/4 pound of crackers.How much did he pay for the crackers?

vodomira [7]

A pound of rice crackers ... $2.88
1/4 pound of crackers ... $x = ?

If you would like to know how much did Matthew pay for the crackers, you can calculate this using the following steps:

1 * x = 1/4 * 2.88
x = 1/4 * 2.88
x = $0.72

Result: Matthew paid $0.72 for 1/4 pound of crackers.

6 0

3 years ago

Read 2 more answers