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2 years ago

The temperature increased 12°F between 9 AM and noon. It decreased 9°F ° between noon and 6 PM.

Mathematics

2 answers:

bixtya [17]2 years ago

5 0

Answer:

Step-by-step explanation:

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Sergio [31]2 years ago

3 0

Answer:

The answer is brainly.com/question/12494496

Step-by-step explanation:

brainly.com/question/12494496

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Does it help to remember and/or list out your square roots

lubasha [3.4K]

Yes, because you need to remember and/or list out your square roots no matter what.

4 0

2 years ago

Read 2 more answers

Hi. Please I need help with this :

ki77a [65]

Answer:

1.79553

Step-by-step explanation:

Step 1: Write expression

log₁₀(√(69.5² - 30.5²))

Step 2: Evaluate square root

log(√(4830.25 - 930.25))

log(√3900)

log(62.45)

Step 3: Find log

log₁₀ (or log)

log(62.45) = 1.79553

-------------------------------------

To use the table method. we find values that are easily evaluated by log₁₀

log₁₀(10) = 1

log₁₀(50) = 1.69897

log₁₀(100) = 2

So we know that log₁₀(62.45) is between 1 and 2 and greater that 1.69897.

3 0

2 years ago

A1 + Y2 + X2 + R5 + X3

bekas [8.4K]

A1 +Y2 + x5 + R5

x2 + x5

7 0

1 year ago

3. Anna has a large bag of coins. After counting the coins, she recorded the counts in the table below. She then decided to draw

Sergio [31]

Answer:

(a) P = 0.2821

(b) P = 0.3718

(c) P = 0.7179

(d) P = 0.6538

(e) P = 0.4231

Explanation:

There is a total of 78 coins in the bag because:

22 + 27 + 11 + 18 = 78

From those 78 coins, 22 are quarters, so the probability that Anna obtains a quarter on the first draw is:

P = 22/78 = 0.2821

Since Anna replaces each coin before the next draw, the probability for each draw is independent. Therefore, the probability that Anna obtains a penny or a dime on the second draw is calculated as:

P = (18 + 11)/78 = 0.3718

Because there are 18 pennies and 11 dimes in the bag.

In the same way, Anna will obtain at most 10 cents worth of money if she obtains a penny, a dime, or a nickel. So, the probability is equal to:

P = (27 + 11 + 18)/78 = 0.7179

The probability that Anna does not get a nickel on the fourth draw is:

P = (22 + 11 + 18)/78 = 0.6538

Finally, Anna obtains at least 10 cents if he obtains a dime or a quarter, so the probability is:

P = (22 + 11)/78 = 0.4231

Therefore, the answers are:

(a) P = 0.2821

(b) P = 0.3718

(d) P = 0.6538

(e) P = 0.4231

7 0

10 months ago

The axis of symmetry for the graph of the function f(x)=3x2 bx 4 is x equals three-halves. what is the value of b? −18 −9 9 18

rewona [7]

Using the vertex of the quadratic equation, it is found that the value of b is of -9.

<h3>What is the vertex of a quadratic equation?</h3>

A quadratic equation is modeled by:

$y = ax^2 + bx + c$

The vertex is given by:

$(x_v, y_v)$

In which:

$x_v = -\frac{b}{2a}$

$y_v = -\frac{b^2 - 4ac}{4a}$

The axis of symmetry is $x = x_v = -\frac{b}{2a}$ .

Considering the coefficient a, we have that:

If a < 0, the vertex is a maximum point.

If a > 0, the vertex is a minimum point.

In this problem, we have that the function is defined as follows:

$f(x) = 3x^2 + bx + 4$

We have that $a = 3, x_v = \frac{3}{2}$ , hence the value of b is found as follows:

$x = -\frac{b}{2a}$

$\frac{3}{2} = -\frac{b}{6}$

b = -6 x 3/2

b = -9.

More can be learned about the vertex of a quadratic equation at brainly.com/question/24737967

#SPJ4

7 0

1 year ago