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Veseljchak [2.6K]
3 years ago
6

Select all of the following that are quadratic equations. x3 - 4x2 + 3 = 0 x - 9 = 0 3x2 + 12x = 0 x2 + 9x -7 = 0 x2 - x = 8x +

2 x - 2 = 3x + 9
Mathematics
1 answer:
nika2105 [10]3 years ago
8 0

The quadratic equations:

3x^2+12x=0\\\\x^2+9x-7=0\\\\x^2-x=8x+2

The cubic equation: x^3-4x^2+3=0

The linear equations:

x-9=0\\x-2=3x+9

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7.
7nadin3 [17]

Answer:  A. 4p + $17.50 = $53.50; p = $9.00

1:  17.50+4p=  Nothing further can be done with this topic. Please check the expression entered or try another topic.

17.5 + 4 p

2:  4p=53.50-17.50=  4p=53.50-17.50

Step-by-step explanation:  9

The total bill: $53.50

17.50 + 4 x = 53.50

4 x = 53.50 - 17.50

4 x = 36

x = 36 : 4

x = $9

Answer: The price of each shrub is $9.

...............................................................................................................................................

Answer:

$9

Step-by-step explanation:

Let   be the price of each shrub.

4 shrubs at    each costs    dollars

Potting soil is $17.50

Hence, total cost is the expression  

We know that total bill is $53.50, so we can equate it to the expression:

This equation can be solved for    to find cost of each shrub.

Solving for    gives us:

So price of each shrub is $9

3 0
3 years ago
3 equivalent fractions for 9/7
yawa3891 [41]
To find three equivalent fractions of a fraction, simply multiply the fraction by a common factor.

For example, multiple both the numerator and denominator of 9/7 by 2.
This will give you a fraction of 18/14, which is equivalent.

You can do this with any number you like to create three equivalent fractions.

5 0
3 years ago
What is the value of x?​
guajiro [1.7K]

Answer:

x ≈ 8.66

Step-by-step explanation:

Using the sine ratio in the right triangle

sin60° = \frac{opposite}{hypotenuse} = \frac{x}{10}

Multiply both sides by 10

10 × sin60° = x, thus

x ≈ 8.66 ( to 2 dec. places )

4 0
3 years ago
One half a number decreased by 3 is 21 what is the equation for this statement
Liono4ka [1.6K]

Question:

What is the equation for the following statement,"One-half of a number decreased by 3 is 21.

Answer:

<em>half the number = x/2 </em>

<em>decreased by 3 </em>

<em>(x/2) -3 =21</em>

<em>=48</em>

5 0
3 years ago
Read 2 more answers
Can someone solve this, you don’t have to type an explanation, thank you.
iogann1982 [59]

Answer:

70

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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