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KIM [24]
3 years ago
10

Use the value of the discriminant to determine the type of roots for x²-3x+1=0

Mathematics
1 answer:
nignag [31]3 years ago
7 0

Hi,

Δ = 9 - 4 * 1 * 1 = 5

the roots are :

x1 = (3 - √5) / 2

x2 = (3 + √5) / 2

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People use water to​ cook, clean, and drink every day. An estimate of 33.9​% of the water used each day is for cooking. If a fam
Lady_Fox [76]

Answer:

23 gallons of water

Step-by-step explanation:

People use water to​ cook, clean, and drink every day. An estimate of 33.9​% of the water used each day is for cooking. If a family uses 67.8 gallons of water a day for cooking​, how many gallons do they use every​ day?

This is calculated as:

33.9 % × 67.8 gallons of water

= 0.339 × 67.8 gallons of water

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5 0
2 years ago
Evaluate 0.3 y+\dfrac yz0.3y+ z y ​ 0, point, 3, y, plus, start fraction, y, divided by, z, end fraction when y=10y=10y, equals,
sergij07 [2.7K]

Answer:

  5

Step-by-step explanation:

Put the numbers where the corresponding variables are in the formula and do the arithmetic.

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The expression evaluates to 5.

6 0
3 years ago
1. Sarah and Maya both need notebooks and pencils. The equation that represents Sarah's
STALIN [3.7K]

Step-by-step explanation:

We have y = 13 - 3x and y = 7 - x.

=> 13 - 3x = 7 - x

=> 2x = 6, x = 3.

Then y = 7 - (3), y = 4.

Hence the price of a pencil is $3 and the price of a notebook is $4. (C)

8 0
3 years ago
Read 2 more answers
Please help and thank you.
pashok25 [27]

Answer:

s(x) is t(x) ...

  • horizontally compressed by a factor of 2,
  • reflected across the y-axis, and
  • translated downward 5 units.

Domain and Range

  • t(x) has a domain of x ≤ 0, and a range of y ≥ 0.
  • s(x) has a domain of x ≥ 0, and a range of y ≥ -5.

Step-by-step explanation:

t(x) is the square root function reflected across the y-axis and compressed horizontally by a factor of 2. That is, in f(x) = √x, the x has been replaced by -2x.

s(x) has the function t(x) <em>reflected back across the y-axis</em> and compressed horizontally by another factor of 2. It is also <em>translated downward by 5 units</em>, so that its origin (vertex) is at (0, -5).

_____

The graph shows you the domain and range of s(x). The domain is all numbers to the right of x=0, including x=0. That is ...

  domain: x ≥ 0

The range is all numbers -5 or above:

  range: y ≥ -5

___

For t(x), the argument of the square root function must not be negative, which means the value of x cannot be positive.

  domain: x ≤ 0

For non-negative values of radicand, the t(x) function will have non-negative values. So, the range is ...

  range: y ≥ 0

_____

<em>Comment on solving problems like this</em>

Your graphing calculator can be your friend.

6 0
3 years ago
A campsite is in the shape of a rectangle. The green region represents campsites with shade. The yellow region represents campsi
34kurt

A campsite is in the shape of a rectangle. The green region represents campsites with shade. The yellow region represents campsites without shade. The probability that your campsite has shade 1/2.

<h3>What is the probability?</h3>

Probability refers to a possibility that deals with the occurrence of random events. The probability of all the events occurring need to be 1.

The formula of probability is defined as the ratio of a number of favorable outcomes to the total number of outcomes.

P(E) = Number of favorable outcomes / total number of outcomes

A campsite is in the shape of a rectangle.

The green region represents campsites with shade.

The yellow region represents campsites without shade.

There are only two possibilities either shaded or not shaded So, the total number of outcomes would be 2.

The probability that your campsite has shade = 1/2

Learn more about probability here;

brainly.com/question/11234923

#SPJ1

5 0
2 years ago
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