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3 years ago

X3 - 7x, f(x) = 8, 2x + 3, x < -3 - 3 < x < 3 x > 3

Mathematics

1 answer:

Elan Coil [88]3 years ago

3 0

Answer:

I did the math and I believe that answer is : -12x4-5x

Step-by-step explanation:

23, f(x) = 4x- 25, f(x) = x2-3x + 10 26. 27. f(x) 3x2 29, f(x) = 2x3-5x2 + 4x-1 30. f(x) = x3-3x2 31, f(x)--2x3-8x2 + 6x + 36 28, f(x) = x3-x2-x + 1 For each function use the leading coefficient test to determine whether y → oo or y →-oo as x → oo. 33, y=2x3-x2 + 9 35. y =-3x4 + 5 34. y=-3x + 7 36, y = 6x4-5x2-1 38, y = 5x-7x4 37. y=x-3x3 For each function use the leading coefficient test to determine whether y → or y →

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2 years ago

What is the answer of This,this is is rational numbers 3.3(6)=

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19.8

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3 years ago

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A bean plant grows at a constant rate for a month. After 10 days, the plant is 25 centimeters tall. After 20 days, the plant is

wariber [46]

Y = 2x + 5

If you take the height at 10 days, 25 centimeters, after 10 more days the height is 45 centimeters, meaning for those 10 extra days the been plant grown 20 centimeters. Since we're told the plant is growing at a constant rate, this shows the bean plant is growing 2 centimeters per day. We can represent this with y = 2x. (After 10 days, the bean plant will be 20 centimeters, after 20 days, the bean plant will be 40 centimeters, etc.)

However, this is not completely true yet. As you can see, after the first 10 days the plant is not 20 centimeter, it's 25 centimeters. We already know the rate in which the plant is changing, but now we need to find the height that the plant was originally, before it started growing.

After the first 10 days, the plant is 25 centimeters tall. Since we know that the plant is growing 2 centimeters per day, we can subtract 20 from 25 to find the original height of the bean plant.

25 - 20 = 5
The bean plant was originally 5 centimeters.

This makes our final equation y = 2x + 5.
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Hope this helps1!

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2 years ago

Which number is greatest?<br> O 2.89 x 10<br> O 1.997x102<br> O 8.9x104<br> O 5x10

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3 years ago

joe has a ring weighing 14 grams made of an alloy of 14 % silver and the rest gold. he decides to melt down the rings and add en

Nataliya [291]

With the help of the ratio method, we conclude that 72 grams of sugar should be added.

<h3>What is Ratio Method?</h3>

In the ratio method, we compare two quantities by equating their two ratios; this equation is also referred to as a proportion.
The cross-multiplication method will be used to solve it.

So, 'n=5' will be the number of rings.

'w = 18 grams' will be the weight of each ring.
Total weight: w₀ = n × w = 5 × 18 = 90 grams

Let 's' be silver. Then,

New weight: wₙ = s + 90
Old % of gold: p₀ = 90% = 0.9
New % of gold: pₙ = 50% = 0.5

Now, use the ratio method as follows:

$\frac{w_o}{w_n}=\frac{p_n}{p_o}$
$\frac{90}{s+90}=\frac{0.5}{0.9}$
90 × 0.9 = 0.5 × (s + 90)
81 = 0.5s + 0.5 × 90
81 = 0.5s + 45
81 - 45 = 0.5s
36 = 0.5s
36/0.5 = s
72 = s
So, s = 72

Therefore, with the help of the ratio method, we conclude that 72 grams of sugar should be added.

Know more about Ratio Method here:

brainly.com/question/26027272

#SPJ9

The correct question is given below:
A jeweler has five rings, each weighing 18 grams, made of alloys of 10% silver and 90% gold. He decides to melt down the rings and add enough silver to reduce the gold content to 50%. How much silver should he add?

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1 year ago