A test consists of 10 problems and students are told to answer any 4 of these questions. In how many different ways can they choose the 4 questions?

Answer:

The correct option is 3.

Step-by-step explanation:

It is given that triangle ABC is similar to triangle XYZ.

The corresponding sides of similar triangles are proportional.

Since it is given that the triangle ABC is similar to triangle XYZ, so by using the definition of similarity triangles

[tex]\frac{AB}{XY}=\frac{BC}{YZ}=\frac{AC}{XZ}[/tex]

From first and third term, we get

[tex]\frac{AB}{XY}=\frac{AC}{XZ}[/tex]

Therefore the correct option is 3.

Answer:

b

im taking the same test 4 years later

Factoring out the Greatest Common Factor (GCF) simplifies the expression, making further manipulation and factoring simpler. It reduces complexity, much like simplifying fractions in arithmetic, and aids in revealing patterns for easier factoring. This step also minimizes calculation errors and assists in proper unit analysis during problem-solving.

Factoring out the Greatest Common Factor (GCF) is a critical step in the process of factoring algebraic expressions. This is important because it simplifies the remaining expression, making it easier to manipulate and factor further if necessary. It is similar to simplifying fractions before performing operations with them; the process becomes cleaner and more straightforward.

For example, when you have an equation with multiple terms, each with a common factor, factoring out this GCF reduces the complexity of the terms, possibly revealing a more obvious pattern or structure that can then be factored more easily. Additionally, removing the GCF early in the process can prevent calculation errors and make other factoring techniques, like the difference of squares or trinomial factoring, more apparent and easier to apply.

In cryptography, algorithms rely on the principle that multiplying large numbers is computationally simple, whereas factoring a large number into its prime factors is difficult. Similarly, in algebra, starting by factoring out the GCF simplifies the entire problem, making the next steps more manageable. In physics equations, where units are involved, ensuring that all factors are in proper form before solving can prevent unit conversion errors, thus factoring out can play a useful role in unit analysis as well.

the square root of 361 = 19

 so the negative square root would be -19

The negative square root of 361 is -19.

The negative square root of 361 is -19. This is because the square root of a number gives both a positive and negative result. In this case, the square root of 361 is 19, so the negative square root is -19.

The formula for discriminant is:

discriminant = sqrt (b^2 – 4 a c)
Where,

a = 1

b = 4

c = -32

Therefore:

discriminant = sqrt (4^2 – 4 (1) (-32))

discriminant = sqrt 144

discriminant = 12

Since the discriminant is a positive real integer, then there are 2 unequal roots or 2 distinct real roots.

for x multiply 6 by sin(45) = 3sqrt(2) = 4.2426

for y  since it is a right triangle with 45 degree angle both legs are equal

 so y = x

product means multiplication

88 is the product of 8 multiplied by a number

 so 88/8 =11

 jenny's score is 11

volume = PI x r^2 x H

you know the volume and the radius ( 12/2 = 6)

480.66 =3.14 x 6^2 x H

480.66 = 113.04 x h

h = 480.66/113.04 = 4.252

round off as needed.

288/3 =96

96-2 = 94

96+2 = 98

94 +96 +98 = 288

Answer:

94, 96, 98

Step-by-step explanation:

Let the smallest integer is x,

So, second larger integer = x + 2 (Because integer are even and consecutive),

And, largest integer = x + 2 + 2 = x + 4,

So, the sum of these integers = x + x + 2 + x + 4 = 3x + 6

According to the question,

3x + 6 = 288

3x = 282

⇒ x = 94

Hence, the integers are,

94, 94+2, 94+4

= 94, 96, 98

recalculate 3/7 to have the same denominator as 8/14 ( 14)

 so multiply both top and bottom by 2. 3/7 becomes 6/14

8/14 - 6/14 = 2/14 reduces to 1/7

 Hobbes made more snowballs by 1/7

recalculate 3/7 to have the same denominator as 8/14 ( 14)

so multiply both top and bottom by 2. 3/7 becomes 6/14

8/14 - 6/14 = 2/14 reduces to 1/7

Hobbes made more snowballs by 1/7

Final answer:

In mathematics, the order of operations dictates that multiplication should be performed before addition. This is a fundamental principle to follow when dealing with expressions involving both addition and multiplication. The commutative property of addition means that the order of adding whole numbers does not affect the result.

Explanation:

In the subject of mathematics, when solving operations that involve both addition and multiplication, the principle to follow is the order of operations, commonly known as BIDMAS or PEMDAS. This stands for Brackets, Indices (or Powers), Division and Multiplication (left-to-right), and Addition and Subtraction (left-to-right). According to this rule, multiplication comes before addition. Therefore, when you see a mathematical expression that includes both addition and multiplication, you should perform the multiplication first.

When working with whole numbers in addition, you should pay attention to the commutative property which states that numbers can be added in any order and the result will be the same. For example, 2 + 3 is the same as 3 + 2. In multiplication, when we work with exponents, the rule is to multiply the digit terms normally and add the exponents for exponential terms. When multiplying fractions, the general rule is to multiply the numerators together and the denominators together.

If k pencils cost c cents. Then the cost in cents of p pencils will be cp / k.

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

If k pencils cost c cents. Then the cost of each pencil is given as,

⇒ c / k

Then the cost in cents of p pencils is given as,

⇒ (c / k) x p

⇒ (cp) / k

If k pencils cost c cents. Then the cost in cents of p pencils will be cp / k.

More about the Algebra link is given below.

https://brainly.com/question/953809

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Step-by-step explanation:  In the given graph x-intercept is -8 and y-intercept is -4.

Also the graph is shaded up of the line for greater values of y's.

On the option 2x+4y ≥ -16 has x-intercept at -8 and y-intercept at -4.

Also all other inequalities has only less than or greater than sign.

In the given graph we have a solid line.

So, there should be greater than or equal to inequality sign for the inequality.

Only option 4 has greater than with equal to sign.

Therefore, correct option is 2x+4y ≥ -16

7 / x+4 = 5/x+1 =

5x+20 = 7x+7 =

20=2x+7

13=2x

x=13/2 = 6.5

6.5+4 = 10.5

6.5+1 =7.5

10.5+7.5 = 18

length of AC = 18

Answer:

  A.  -12h² - 22h + 14

Step-by-step explanation:

(-4h +2)(3h +7) = -4h(3h +7) +2(3h +7) . . . . . . . (a +b)c = ac +bc

  = (-4h)(3h) + (-4h)(7) + (2)(3h) + (2)(7) . . . . . . . a(b +c) = ab +ac . . . (twice)

  = -12h² -28h +6h +14

  = -12h² -22h +14 . . . . . . . . collect terms

Given the points (2,k) and (0,−6) for which values of k would the distance between the points be  √5 ?

We will find that there are two possible values of k;

k = -5 and k = -7.

We know that the distance between two points (x₁, y₁) and  (x₂, y₂) is given by:

[tex]d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}[/tex]

Here we have the points (2,k) and (0,−6), then the distance will be given by:

[tex]d = \sqrt{(2 - 0)^2 + (k - (-6))^2} = \sqrt{4 + (k + 6)^2}[/tex]

Now we want to find the value of k such that the distance is equal to √5, then we need to solve:

[tex]\sqrt{5} = \sqrt{4 + (k + 6)^2}[/tex]

removing the square root in both sides we get:

[tex]5 = 4 + (k + 6)^2\\\\5 - 4 = (k + 6)^2\\\\1 = (k + 6)^2[/tex]

Then we can see that (k + 6) = ± 1, solving these two equations (one for each sign) we get:

k + 6 = 1

k = 1 - 6 = -5

and

k + 6 = -1

k = -1 - 6 = -7

Then we found two possible values of k:

k = -5

k = -7

Below you can see the graph of the points A = (2, -5), B = (0, -6) and C = (2, -7)

If you want to learn more about distances, you can read:

https://brainly.com/question/5057237