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2 years ago

13

Hello, i am taking math assignments and i was wondering could anyone help me. These problems are new and confusing to me so if y

ou could help i will give brainliest

1 answer:

fenix001 [56]2 years ago

7 0

Ask the question so someone can answer

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If x-y=9 and xy=2,find the value of (x square + y square)

kati45 [8]

Answer:

x² + y² = 85

Step-by-step explanation:

Using the expansion

(x - y)² = x² + y² - 2xy , then

x² + y² - 2xy = (x - y)² ( add 2xy to both sides )

x² + y² = (x - y)² + 2xy ← substitute given values

= 9² + 2(2)

= 81 + 4

= 85

3 0

2 years ago

What is the total number of 0.3 pound meatballs Thomas can make with 8.1 pounds of meat?

SCORPION-xisa [38]

27

Divide

8.1 / 0.3

27

Hope this helps :)

7 0

3 years ago

Find first derivative f(x)= x² - 4 /x³ + 9

vitfil [10]

Answer:

f'(x) = 2x + $\frac{12}{x^{4} }$

Step-by-step explanation:

differentiate using the power rule

$\frac{d}{dx}$ ( a $x^{n}$ ) = na $x^{n-1}$

Given

f(x) = x² - $\frac{4}{x^3}$ + 9 = x² - 4 $x^{-3}$ + 9 , then

f'(x) = 2x + 12 $x^{-4}$ = 2x + $\frac{12}{x^{4} }$

5 0

1 year ago

Read 2 more answers

What is the total weight, w, of 5 bags of soil?

Charra [1.4K]

Answer:200

Step-by-step explanation: I typed this and got it right

4 0

2 years ago

4vir4ik [10]

Answer:

1. 45

2. 24

3. 32

Step-by-step explanation:

One

Ashley= 3/4 * Steve

Ashley= 3/4 * 60

Ashley = 180/4

Ashley = 45

Two

60% of 40

60/100 * 40

2400/100 = 24

Three

40% 80 = 40/100 * 80 = 3200 / 100 = 32

5 0

2 years ago