3 years ago

!!!! Help! I don’t know this I’m so bad at math please help !!!

Mathematics

2 answers:

Sedaia [141]3 years ago

8 0

Answer:

if X = -2 then

required answer is 41

LenaWriter [7]3 years ago

4 0

Answer:

Step-by-step explanation:

9x^2-4x-3 = ? when x=-2

9(-2)^2-4(-2)-3 = ?

9(4)-4(-2)-3 = ?

36+8-3=?

44-3=?

41=?

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soldier1979 [14.2K]

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3 years ago

What are the leading coefficient and degree of the polynomial? <br> 20-w^9+2w^3+12w

Ilya [14]

I assume you want the leading coefficient because there is only 1.

The leading coefficient is always in front of the term with the greatest exponent.

Leading coefficient = -1.

The degree of this function is 9. It is a ninth degree polynomial function. Why 9? It is a 9th degree polynomial because 9 is the greatest power.

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3 years ago

A 15 ounce alloy containing 30% gold was mixed with an alloy containing 5% gold to get an alloy containing 20% gold. How many ou

Studentka2010 [4]

Answer:

4.5 % alloy

Step-by-step explanation:

Let x = amt of 30% alloy

The resulting total is to be 25 oz, therefore:

(25-x) = amt of 5% alloy:

A typical mixture equation:

.30x + .05(25-x) = .20(25)

.30x + 1.25 - .05x = 5 .30x - .05x = 5 - 1.25

.25x = 3.75

x = 3.75%2F.25

x = 15 oz of 30% alloy required

then

25-15 = 10 oz of 5% alloy:

Check solution

.30(15) + .05(10) = .20(25)

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4 0

3 years ago

How much it will take for a bag to travel 5 meters across the floor of it is traveling at 1 m/s

tester [92]

Time = $\frac{distance}{speed}$

The distance the bag will travel is 5 meters, and the speed it is traveling at is 1 m/s. Plug these into the formula for time.

$\frac{5 m}{1 m/s}$ = 5 s
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It will take the bag 5 seconds to travel across the floor.

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3 years ago

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lutik1710 [3]

The legth is 3.6 :) it says it to the right

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3 years ago