How can you tell when a quadratic equation has two identical, rational solutions?a) When the radicand is negative
b)When b in the quadratic formula is greater than the radicand
c)When the radicand equals zero
d)When the radicand is not a perfect square

Answers

Answer 1

Answer: when the radicand equals zero
because if it is zero, there is no plus mius anything, you are left with -b/2a

Answer 2

Answer: C, Because Of The Formula.

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7+ (-5)+(-2)=07+ (5)+(2)=07+(-4)+(-3)=07+(-6)+(-1)=0
Which of the following terms are like terms?a) 9x and 9y b)12ac^2 and ac^2 c)8xy and 8xz d)ab^2 and x^2y

In sunlight, a vertical stick 6 ft tall casts a shadow 2 ft long. At the same time a nearby tree casts a shadow 14 ft long. How tall is the tree? Round to the nearest tenth A) 42.0 ft 
B) 85.7 ft 
C) 18.0 ft 
D) 52.5 ft<br /

Answers

The nearby tree's height is 42.0 ft, which is A

Alrighty friend, let me explain you a math.
We're gonna want to start by setting up a fraction. We'll set up the fraction as height/shadow. The stick's height is 6 feet and the shadow is 2 feet, making the fraction 6/2. The second fraction only gives us the shadow, so the fraction is x/14.
Now, we're gonna do some cross multiplication m8. 6/2 x x/14. Multiply 6x14= 84 and 2x(x)= 2x ---> 2x = 84
Do you some basic algebra here, and divide both sides by 2.
Your final answer is 42, so the tree is 42 feet tall.

Diep bought a baguette loaf of bread 65 centimeters long. For lunch every afternoon, he cuts 15 centimeters of bread for his sandwich. Diep wants to determine the length of the loaf of bread, l, after d days. What is the equation of the scenario? Is the graph of the equation continuous or discrete?

Answers

Given that the original length of the baguette is 65, and for each day 15 gets cut off, we have the functionl(d) = 65 - 15dwhere d is a positive integer representing the nth day. As a matter of fact, the possible vaalues for d are 0, 1, 2, 3, and 4. Since on the 5th day, there won't be enough baguette anymore. This shows that the function l(d) is not continous since only certain points satisfy the condition.Thus, the function is l(d) = 65 - 15 where {d| 0 ≤ d ≤ 4} and it is discrete.

Which are correct statements regarding proofs? Check all that apply. In a paragraph proof, statements and their justifications are written in sentences in a logical order. A two-column proof consists of a list statements and the reasons the statements are true. A flowchart proof gives a visual representation of the sequence of steps without justifications. A paragraph proof is a two-column proof in sentence form. A two-column proof lists only the given information and what is to be proven. A flowchart proof includes a logical series of statements in boxes with connecting arrows.

Answers

Answer:

In a paragraph proof, statements and their justifications are written in sentences in a logical order.
A two-column proof consists of a list statements and the reasons the statements are true.
A paragraph proof is a two-column proof in sentence form.
A flowchart proof includes a logical series of statements in boxes with connecting arrows.

Step-by-step explanation:

The correct statements regarding proofs are :

In a paragraph proof, statements and their justifications are written in sentences in a logical order.
A two-column proof consists of a list statements and the reasons the statements are true.
A paragraph proof is a two-column proof in sentence form.
A flowchart proof includes a logical series of statements in boxes with connecting arrows.

And these two sentences are wrong statements:

A flowchart proof gives a visual representation of the sequence of steps without justifications.
A two-column proof lists only the given information and what is to be proven

The correct statements regarding proofs are;

A paragraph proof is a kind of written argument in which claims and their supporting evidence are presented in a series of paragraphs.
Statements and their supporting evidence are listed in separate columns in a two-column proof. This is further explained below.
A paragraph proof is a two-column proof in sentence form.
A flowchart proof includes a logical series of statements in boxes with connecting arrows.

What is proof?

Generally, proofs are simply defined as A piece of proof that proves a claim or assertion to be true.

In conclusion, Proofs are based on communicable facts on a subject.

Answers

Force is the product of mass and acceleration

The ratio m1/m2 is 1/3
The acceleration is 3/4

(a) The ratio m1/m2

Force is calculated as:

$F = ma$

For the first object, we have:

$F = m_1 * 3$

For the second object, we have:

$F = m_2 * 1$

The forces on both objects are equal.

So, we have:

$m_1 * 3 = m_2 * 1$

Divide both sides by 3m2

$(m_1)/(m_2)= (1)/(3)$

Hence, the ratio m1/m2 is 1/3

(b) The acceleration when the masses are combined

In (a), we have:

$(m_1)/(m_2)= (1)/(3)$

Make m2 the subject

$m_2 = 3m_1$

Recall that:

$F = ma$

So, we have:

$F =(m_1 +m_2) * a$

Substitute $m_2 = 3m_1$

$F =(m_1 +3m_1) * a$

$F =4m_1 * a$

Substitute $F = m_1 * 3$ --- because the force is the same

$m_1 * 3 =4m_1 * a$

Cancel out m1

$3 =4 * a$

Divide both sides by 4

$a = \frac 34$

Hence, the acceleration is 3/4

Read more about force and acceleration at:

brainly.com/question/13370981

a) using f=ma, F=m1 x 3.00 =3m1
also F=m2 x 1.00 = m2
as the Fs are the same: 3m1=m2
this means that the ratio of m1 to m2 is 3 to 1 as there are 3 m1s for every m2.
b) again using f=ma, the combination of the masses is m1 + m2 or 4m1 as there are 3m1s in m2. so F=4m1 x a = 3m1 (as F is the same for all of them).
a = 3m1/4m1 = 3/4ms^-2

When a volcano erupts, the height of the peak is reduced and the upper portion is removed. The height of a volcano after it erupted was 8,219.5 feet. This was 85% of the original height. What was the original height?

Answers

The height of the volcano is reduced after the eruption, then the original height of thevolcano is 9670 feet.

What is the Percentage?

The Latin term "per centum," which signifies "by the hundredth," was the source of the English word "percentage." Segments with a denominator of 100 are considered percentages. In other terms, it is a relationship where the worth of the entire is always considered to be 100.

As per the given information in the question,

Height of the volcano after eruption = 8,219.5 feet

Let the original height of the volcano is x.

85% of x = 8219.5

x = (8219.5 × 100)/85

x = 9670 feet.

To know more about percentages:

brainly.com/question/29306119

#SPJ5

Answer:

9,670

Step-by-step explanation:

8,219.5 ÷ 85% (0.85) = 9,670

A pool is being drained at a constant rate. The amount of water is a function of the number of minutes the pool has been draining, as shown in the table. Write an equation in slope-intercept form that represents the function. Then find the water in the pool after two and a half hours. Time (mi) 12--------20------50
Volumne (gal) 4962--4754--3974