Answers
Answer:
[tex]\begin{bmatrix}2 & -1 & -4 & 7\\ 0 & -30 & 20 & -50\\ 0 & 30 & 24 & 6\end{bmatrix}[/tex]
Step-by-step explanation:
Given matrix is,
[tex]\begin{bmatrix}2 & -1 & -4 & 7\\ 0 & 3 & -2 & 5\\ 0 & 10 & 8 & 2\end{bmatrix}[/tex]
Operations performed,
-10R₂ → R₂
[tex]\begin{bmatrix}2 & -1 & -4 & 7\\ 0 & -30 & 20 & -50\\ 0 & 10 & 8 & 2\end{bmatrix}[/tex]
3R₃ → R₃
[tex]\begin{bmatrix}2 & -1 & -4 & 7\\ 0 & -30 & 20 & -50\\ 0 & 30 & 24 & 6\end{bmatrix}[/tex]
Answer:
the multiple choice is A
Step-by-step explanation:
Related Questions
what is the smallest two digit positive integer such that the product of its two digits is one-half the integer
Answers
Let x be the tens and y be the ones digits.
The product of the number is then: 10x + y
The product is 1/2, so you need to multiply the product by 2 and the number:
10x + y = 2(x+y)
10x + y = 2x + 2y
Subtract 1 y from both sides
10x = 2x + y
Subtract 2x from
Both sides
8x = y
X has to be 1 , which would make y 8
The product number becomes 18
Since the product is 1/2, multiply by 2:
18 x 2 = 36
3 x 6 = 18
The answer is 36
Second attempt at getting this answered Please check the attachment
Answers
Answer:
Step-by-step explanation:
-18x+240 , the length of PA is 9x + 120 the length of AQ is 9x +120
The length of PQ is -18x+240
if it is 2:30 what time would it be 1 hour and 30 minutes
Answers
Answer:
4:00
Step-by-step explanation:
Javier used the expression below to represent his score in a game of mini-golf.
3x + x + 5 – 2x
If he simplifies the expression, which statements are true about the parts of the simplified expression? Select three options.
Answers
Answer:
I don't get it
Step-by-step explanation:
A rectangle has an area of 102cm2. The length of the rectangle is 17 cm. What is the perimeter of the rectangle
Answers
Answer:
36
Step-by-step explanation:
To find the with divide 102 by 17, we get 6. Then add 6+6+17+17 because we know this is a rectangle and it has 2 with sides and 2 length sides. We get the answer of 36.
1. Jack is 30 years old and Alice is 35 years old. What percent of Alice's age is Jack, rounded to the nearest tenth of a percent?
Answers
What is 15 to the 7 power divided by 15 to the 4 power equal to?
Answers
Answer:
3375
Step-by-step explanation:
A class has 30 boys and 20 girls. The average age of
boys is 12 yrs and girls 12 yrs. What is the
average age of the whole class."
Answers
Answer:
class has 30 boys and 20 girls the average age of boys is 12yr and girls 12yrwhole age of class is 12 + 12 ÷2
= 24÷2
= 12
Step-by-step explanation:
so the average of whole class is 1214x – 34 = 11x + 29
x=
Answers
Answer:
-1.31
Step-by-step explanation:
14x - 11x - 29x = 34
-26x = 34
x = 34/ -26
x= -1.31
Solve the compound inequality 2.1 – 3 < 7 and 5 - 3 < 8
Answers
Step-by-step explanation:
2.1--3<7.
--0,9<7
true
5--3< 8
2<8
true
How to find if it is a function or not:
The set of ordered pairs (Z,A) where z is the zip code, and A is the street address.
Answers
Answer: It is not a function.
Step-by-step explanation:
A function is something that "eats" an input and transforms it into an output.
We write them as y = f(x)
Where x is the input, and y is the output.
Now, a function has an important rule, for each input x, the function can only "transform it" (or map it) into only one possible output.
This means that, for example, if we have, for x = x1.
And a single
f(x1) = y1
f(x1) = y2
where y1 and y2 are different values.
Then this is not a function, because it is mapping the value x1 into two different outputs.
In this case, we would have:
f(Z) = A.
So Z is the input, but we know that a ZIP code works for an entire city, and in a given city we have lots of different street addresses, then for a single value of the input, Z, we have a lot of possible values of the output.
This means taht the set (Z, A) can not represent a function.
Need Help!! because im confused
Answers
Answer:
3g+20
Step-by-step explanation:
Because Milena wants to have 3 cups per each guest and then she wants an additional 20 more.
Answer:
C. 3g+20
Step-by-step explanation:
The answer here is 3g+20.
Their will be an additional 20 cups of punch, which is addition.
what is 50 divided by 1
Answers
Please help will mark brainliest 15 points answer ASAP.
Use the graph below to fill in the blank with the correct number: (1 point)
f(1) =
Answers
Answer:
f(1) = -2
Step-by-step explanation:
Remember that when dealing with functions, it is written in the form of f(x)
We know that f(1) is the value of the function when the value of x is equal to 1
In this problem, look on the graph to see
for x = 1
the value of the function is f(1) = -2
Answer:
-2
Step-by-step explanation:
The density of a substance can be found by dividing the mass of the substance by the volume of the substance. A sheet of pure iron has a mass of 500 grams and a volume of 4 in3. Write an equation of the form m=dv, where m represents the mass of a sheet of iron in grams, v represents the volume of a sheet of iron in cubic inches, and d is a constant, the density of iron in grams per cubic inch
Answers
Answer:
D=375g/cubic inch
Step-by-step explanation:
D=500 divided by 4/3
Is 29.9 a rational, integer, whole number or all of the above?
Answers
Answer:
It is in integer
Step-by-step explanation:
An integer is any number positive or negative. A whole number would not have a decimal and if it were a rational number it could be written as a ratio.
Read the word problem below.
Answers
Answer:
Step-by-step explanation:
Number 4if x represent the numbers of pencils per box solve the equation 8x4=196so,she put 4 in each boxSimplify: 6-8+7-2-8+13
Answers
Answer:
The answer is 8.
Step-by-step explanation:
6-8+7-2-8+13
= (6 +7 + 13) - (8+2+8)
= 26 - 18
= 8
Help on these questions?
Answers
12 people can comfortably fit in a 4x4 foot square. Use this value to estimate the size of a crowd that is 10 feet deep on both sides of street along a 2 mile section of a parade route
Answers
hope this helps you out if i doesnt just comment and ill see what i can do
Find the distance between the points (-4, 6) and (3, -7)
Answers
Answer:
the distance between (-6,4) and (3,-8) is 15 units
2xy-xz=4 solve for x
Pls help due today
Answers
Hey there!
[tex]Answer:\boxed{x=\frac{4}{2y-z}}[/tex]
[tex]Explanation:[/tex]
[tex]2xy-xz=4[/tex] Solve for X
x(2y - z) Factor out the variable x
x(2y - z)/2y - z = 4/2y - z Divide both sides by 2y - z
x = 4\2y - z
Hope this helps!
Write 9.1 as a mixed number and as an improper fraction.
Do not try to simplify your answers.
Answers
Answer: 9 1/10 91/10
Step-by-step explanation:
Answer:
9 1/10 and 91/10
Step-by-step explanation:
hope it helps :)
brainliest pls? have a good day/night
Solve.
4 + x/7 = 2
A) -14
B) 10
C) 12
D) 42
Answers
Answer:
the answer is A
-14
Step-by-step explanation:
subtract 4 in both sides
Answer:
X= -14
Step-by-step explanation:
SUBTRACT 4 FROM BOTH SIDES OF THE EQUATION.
SIMPLIFY
Multiply all terms by the same value to eliminate fraction denominators
Cancel multiplied terms that are in the denominator
Multiply the numbers
THEN AFTER YOU DO THESE STEPS YOU WILL GET THE SOLUTION ABOVE.
here are the first four terms in a sequence: 6, 10, 14, 18
the number 102 is NOT a term in this sequence. explain why.
thanks :)
Answers
Answer:
common difference = 4
if 102 is a term in sequence n should have non decimal value
a +(n-1)d = 102
0r 6 + (n-1)4= 102
0r, 4(n-1) = 96
or n-1 =24
n =25
102 is in a sequence
Step-by-step explanation:
Write "twenty-four and seventy thousandths" using base-ten numerals.
Answers
Answer:
24.070
Step-by-step explanation:
twenty-four and seventy thousandths
24
and means change from integers to fractions
24 70/1000
or as a decimal
24.070
Solve for f.
Round your answer to 2 decimals.
9f = {(12f – 2)
Answers
Answer:
f=0.67
Step-by-step explanation:
Let's solve your equation step-by-step by isolating f.
9f=12f−2
Step 1: Subtract 12f from both sides.
9f−12f=12f−2−12f
You get:
−3f=−2
Step 2: Divide both sides by -3.
−3f/−3 = −2/−3
You get:
f= 2/3, or f= 0.67
Hope this helps! :)
A globe has a diameter of 14 inches. Find the volume of the globe. Round your answer to the nearest tenth.
Answers
Answer:
1436.8 in³ (nearest tenth)
Step-by-step explanation:
A globe is in the shape of a sphere.
[tex]volume \: of \: sphere = \frac{4}{3} π {r}^{3} [/tex]
Diameter= 2 ×radius
radius of globe
= 14 ÷2
= 7 inches
Volume of globe
[tex] = \frac{4}{3} π {(7}^{3} ) \\ = 1436.8 \: in^{3} \\ (nearest \: tenth)[/tex]
Step-by-step explanation:
We have given that diameter of globe (sphere) is 14 inches,Then it's radius is 14/2 = 7 inches :]To find the volume of sphere we have to use the given below formula :]
[tex] \boxed {\underline{ \underline{\bigstar\:\: \sf Volume \: of \: sphere = \dfrac{4}{3} \pi r^3 \: \: \bigstar}}} \\ \\ [/tex]
☯ [tex]\underline{\boldsymbol{According\: to \:the\: Question\:now :}} [/tex]
[tex]:\implies \sf Volume \: of \: sphere = \dfrac{4}{3} \times 3.14 \times 7 \times 7 \times 7 \: \: \bigg \lgroup \bf{putting \: \pi = 3.14} \bigg \rgroup \\ \\ [/tex]
[tex]:\implies \sf Volume \: of \: sphere = \dfrac{4}{3} \times 3.14 \times 343 \\ \\ [/tex]
[tex]: \implies \underline{ \boxed{ \sf Volume \: of \: sphere = 1436.0267 \: cubic \: inches}} \\ [/tex]
4 b + 19 can be translated as "nineteen more than the product of 4 and a number." TrueFalse
Answers
Answer:
True
Step-by-step explanation:
Step-by-step explanation:
4b+19
If 19 is added to 4b, then yes, it is 'nineteen more than...'
4b is a multiplication expression in itself and the term 'product' means the answer to a multiplication problem.
So the answer is true.
hope it helps!
Need help asap please! Thanks!
Answers
6/9=9/15
If this proportion is true, it means the triangles are similar. If this proportion is impossible, it means the triangles are no similar.
To calculate this, we use cross multiplication.
6/9=9/15
6*15=9*9
90=81
90 does not equal 81 making this proportion impossible, which concludes that these two triangles are not similar.
I hope this helps! Please comment if you have any questions.