Which of the following statements is true?
A.
The rational number system is not closed under multiplication, because the product of two rational numbers is not always an irrational number.
B.
The rational number system is closed under multiplication, because the product of two rational numbers is always a rational number.
C.
The rational number system is not closed under multiplication, because the product of two rational numbers is not always a rational number.
D.
The rational number system is closed under multiplication, because the product of two rational numbers is always an irrational number.
Answers
Answer:
its c i tink but im not completly sure
Step-by-step explanation:
Answer: B. The rational number system is closed under multiplication, because the product of two rational numbers is always a rational number.
The explanation is in the photo below:
Related Questions
In triangle ABC, the measure of angle B is 50 degrees. Select all possible values for the measures of A and C if ABC is an acute triangle. m\angle∠A= 58 degrees; m\angle∠C= 72 degrees m\angle∠A= 100 degrees; m\angle∠C= 30 degrees m\angle∠A= 80 degrees; m\angle∠C= 50 degrees m\angle∠A= 60 degrees; m\angle∠C= 70 degrees m\angle∠A= 90 degrees; m\angle∠C= 40 degrees m\angle∠A= 105 degrees; m\angle∠C= 25 degrees
Answers
Answer:
Step-by-step explanation:
Sum of angle in a triangle = 180°
<A+<B+<C = 180
Given <B = 50°
Substituting into the formula
<A+50+<C = 180
<A+<C = 180-50
<A+<C = 130°
Since the ∆ABC is an acute triangle, the angles <A and <C must be angles less than 90° since acute angles are angles less than 90°
The possible values of <A and <C that will be acute and give a sum of 130° are;
∠A= 58° and ∠C= 72°
∠A= 80° and ∠C= 50°
∠A= 60° and ∠C= 70°
You can see that all the Angles are less than 90° and their sum is 130°
X^2 +6x+30 in vertex form
Answers
Answer:
Step-by-step explanation:
Factoring x2-6x-30
The first term is, x2 its coefficient is 1 .
The middle term is, -6x its coefficient is -6 .
The last term, "the constant", is -30
Step-1 : Multiply the coefficient of the first term by the constant 1 • -30 = -30
Step-2 : Find two factors of -30 whose sum equals the coefficient of the middle term, which is -6 .
-30 + 1 = -29
-15 + 2 = -13
-10 + 3 = -7
-6 + 5 = -1
-5 + 6 = 1
-3 + 10 = 7
-2 + 15 = 13
-1 + 30 = 29
Which multiplication expression is equivalent to 5/8 divided by 1/6 ?
Answers
Answer:
5/8 * 6/1
Step by Step Explanation:
Answer:0.625x0.16
Step-by-step explanation:
HELP ASAP!!!
Is ___ greater than, less than or equal to 5? Explain.
Look at picture to understand
Answers
what's the number of electron for Fe?
Answers
Answer:
The answer 26, given that it’s atomic number is 26, and the atomic number is equal to the number of protons, which is equal to the number of electrons. Assuming that it has a neutral charge, the answer would be 26.
Step-by-step explanation:
A fair coin has 2 sides (heads and tails) that are equally likely to show when the coin is flipped.
What is the theoretical probability that a fair coin lands on heads?
Answers
Answer:
50%
Step-by-step explanation:
if there are two sides and are equally likey to land on the same side 100%/2 = 50% boom have a good friday
What conclusion can be made based on this multiplication problem?
7x3=21
Seven is 3 times the size of 21.
Seven is 21 times the size of 3.
O Twenty-one is 7 times the size of 7.
O Twenty-one is 7 times the size of 3.
Answers
Answer:
I believe it is twenty-one is 7 times the size of 3
Step-by-step explanation:
Thomas wants to put a fence around a rectangular garden that is 12 feet long and 7 feet wide.
How much fencing he will need?
Answers
Answer:
84 feet
Step-by-step explanation:
he will need 84 ft to cover the entire garden
Answer:
38 ft of fencing
Step-by-step explanation:
The perimeter of a rectangle is 2L + 2W, where L and W are the length and width, respectively. The dimensions of the garden are given, 7 x 12 ft.
The amount of fencing needed is 2(7) + 2(12) = 14 + 24 = 38 ft of fencing
Which of the following statements are always true about matrices?
Two matrices are equal if they are both square matrices.
Two matrices with different sizes cannot be equal.
A 2 x 3 matrix has 2 rows and 3 columns.
Two matrices are equal if their corresponding elements are equal.
Answers
Answer:
B, C, D
Step-by-step explanation:
edge 2023
Sean has two single accounts at Corona Bank. One account has a balance of $174,898.09 and the
other has a balance of $277,999.99. What is the sum of Sean's balances?
Answers
HELP what is 0.8120^-2=y16
Answers
Answer:
1.6280
Step-by-step explanation:
. Move all terms not containing y y to the right side of the equation.
The following scores were obtained by 11 footballers in a goal-competition 536878311632. The median score was?
Answers
Answer:
3
Step-by-step:
1,1,2.2.3.3.3.5.6.6.7.8.8
more 3s than other numbers
median is 3
The new cookie recipe has 1 1/2 cups of flour for every 1/2 cup of chocolate chips.
Enter the slope.
Answers
Answer:
3
Step-by-step explanation:
1 1/2 cups for every 1/2 cup
im not exactly sure about the slope but i know the rate is 1:3
so i think they might be the same thing
Find the difference.
50 - (-27)
Answers
Find the coeficcient of the x4y3 term in the expansion of (2x+y)7
Answers
By the binomial theorem,
[tex]\displaystyle (2x+y)^7 = \sum_{k=0}^7 \binom7k (2x)^{7-k} y^k=\sum_{k=0}^7 \binom7k 2^{7-k} x^{7-k} y^k[/tex]
where
[tex]\dbinom nk=\dfrac{n!}{k!(n-k)!}[/tex]
is the binomial coefficient.
We get the x⁴y³ terms with k = 3, for which the coefficient would be
[tex]\dbinom73 2^{7-3}=\dfrac{7!}{3! 4!} 2^4=\boxed{560}[/tex]
Who can find the area
Answers
I did this by subtracting 7 (from the triangle) from 20 to find the the rectangle width!
20-7= 13
Area of rectangle
13•7 =91
Area of triangle
(7•7)/2= 24.5
But it asked the area of the figure so you’ll add both of them together
24.5 + 91 = 115.5
Jorge read that 0.72 of his favorite cereal
was whole grain wheat. Find what fraction
of his cereal is whole grain wheat. Write in
simplest form.
Answers
Answer:
72%
Hope this helps
This is for 10 points! Plz
Answers
Answer:
...
Step-by-step explanation:
Table e
5:2
10:4
20:8
Table F
180:5
36:1
216:6
What is 78,900,000,000 expressed as scientific notation?
Answers
Answer:
7.89 x 10<superscript=10>
Step-by-step explanation:
4 x + 6 < − 6...............................................................
Answers
Answer:
x < - 3
Step-by-step explanation:
Given
4x + 6 < - 6 ( subtract 6 from both sides )
4x < - 12 ( divide both sides by 4 )
x < - 3
Tim's mom filled the gas tank in her SUV and spent $72.00 for 22.5 gallons of gasoline .what is the constant of proportionality that relates the cost in dollars ,y, to the number of gallons of gas,x
A.$0.31 per gallon
B.$3.13 per gallon
C.$3.20 per gallon
D.$0.32 per gallon
Answers
Answer:
itś c
Step-by-step explanation: because you divide 72.00/22.5= 3.2
P(x)=5x^2-3x+7(x=1)
Pls
Answers
Answer:
9
Step-by-step explanation:
Given
p(x) = 5x² - 3x + 7 ← substitute x = 1
p(1) = 5(1)² - 3(1) + 7 = 5(1) - 3(1) + 7 = 5 - 3 + 7 = 9
please help!! giving 20 points ! What is the area of this rectangle?
Answers
Answer:
C
Lucky guess if this is wrong i am truly sorry.
what does figure number 4 equal
Answers
Answer:
12
Step-by-step explanation:
bc at the bottom them r halfs so all the have to do its put them to together than it would be 12
Identify the factors of the expression 6y(x+z).
Answers
Answer:
6, y, and (x+z)
Step-by-step explanation:
A factor is something in the expression that is multiplied by something else. In this expression 6 and y are getting multiplied by each other and (x+z) are getting multiplied by 6y.
X=y than y=x what’s the property of equality
Answers
Answer:
Symmetric Property
Step-by-step explanation:
Symmetric Property, because it tells that the both sides of the equal sign are actually equal, regardless of which side of the equal sign.
If [tex]x = y[/tex], then [tex]y = x[/tex].
Transformation of functions
Answers
f(x-4)
6.25% of 1200 is what number
Answers
Answer:
75
Step-by-step explanation:
Answer:
Step-by-step explanation:
6.25/100*1200
=75
Round 624.914 to the nearest whole number.
Answers
5(x-6) = 2x - 18 + 2x
Answers
Answer: x = 4/3
Step-by-step explanation: