Given:
The system of equation is
[tex]2x+y=8[/tex]
[tex]x-y=10[/tex]
To find:
The value of the system determinant.
Solution:
If two equations of a system of equations are [tex]a_1x+b_1y=c_1[/tex] and [tex]a_2x+b_2y=c_2[/tex], then the system determinant is
[tex]D=\left|\begin{matrix}a_1&b_1\\a_2&b_2\end{matrix}\right|[/tex]
[tex]D=a_1b_2-b_1a_2[/tex]
The given two equations are [tex]2x+y=8[/tex] and [tex]x-y=10[/tex].
Here, [tex]a_1=2,b_1=1,c_1=8, a_2=1,b_2=-1,c_2=10[/tex].
[tex]D=\left|\begin{matrix}2&1\\1&-1\end{matrix}\right|[/tex]
[tex]D=(2)(-1)-(1)(1)[/tex]
[tex]D=-2-1[/tex]
[tex]D=-3[/tex]
The value of the system determinant is -3. Therefore, the correct option is C.
Answer:
-3
Step-by-step explanation:
2x+-3=8
x-3=10
Solve for x. Enter the solutions from least to greatest.
x2 + 16x + 63 = 0
lesser x =
greater x =
Answer: less= -9.41
Greater= -6.59
Step-by-step explanatio. it is
Answer:
Step-by-step explanation:
what is 2838 divisible by?
Answer:
have calculated all the numbers that 2838 is evenly divisible by. The numbers that 2838 is divisible by are 1, 2, 3, 6, 11, 22, 33, 43, 66, 86, 129, 258, 473, 946, 1419, and 2838. You may also be interested to know that all the numbers that 2838 is divisible by are also known as the factors of 2838.
Your checking account balance is $50. You spend $11 and then deposit $27.
What is your current balance?
Answer:
66$
Step-by-step explanation:
50$-11$+27$
66$
Answer:
$66
Step-by-step explanation:
$50- $11= $39
$39+ $27= $66
Tell whether the ordered pair is a solution.
y=4x
(1,4)
Answer:
It’s a solution
Step-by-step explanation:
2x + 8 = 14 solve the equation you may find using algebra tiles to be helpful
Answer:
x = 3
Step-by-step explanation:
2x + 8 = 14
2x = 6
x = 3
Answer:
3
Step-by-step explanation:
subtract 8 from both sides
then divide 2 from both sides to get x = 3
* You may use a calculator on this question.
A circle has a radius of 23.85 inches.
What is the circumference of this circle?
Use 3.14 for pi. Round your final answer to the nearest tenth.
74.9 inches
1786.1 inches
149.8 inches
Please help
The circumference formula is 168.6
where r is the radius given to us as 26.85, and pi is to be 3.14. In our formula then, we have
.
Doing that multiplication and rounding to the nearest tenth leaves us with a circumference of 168.6 inches.
1. (10 points) Explain how to factor the following:
A: 3m2 + 4m +1 = 0
B: 16n- 25
C: 20n3 - 15n2 + 4n - 3
D: 864.3 + 4
Answer:
A. 3m² + 4m + 1 = 0
3m² + 3m + m + 1 = 0
3m (m + 1) + 1 (m + 1) = 0
( 3m + 1 ) (m + 1) = 0
B. 16n - 25
16n = 25
n = 25/16
Which of the following is a perfect square?
A.) 115
B.) 169
C.) 154
D.) 279
Answer:
B (169)
Step-by-step explanation:
In the isosceles triangle ABC
AB=AC
angle B = (3x 32)º
angle C =(87-2x)"
Work out the value
of x.
Answer:
x = 4.5
Step-by-step explanation:
Angle B = angle C because it is an isosceles triangle.
3x32 = 87-2x
96 = 87-2x
reduce:
9 = 2x
x = 4.5
An isosceles triangle is one with two equal-length sides. The value of x is 11.
What is an isosceles triangle?An isosceles triangle is one with two equal-length sides. It is sometimes stated as having exactly two equal-length sides, and sometimes as having at least two equal-length sides, with the latter form containing the equilateral triangle as a particular case.
Since in an isosceles triangle, the angle made by the equal sides and the base are equal, therefore, we can write,
∠B = ∠C
3x + 32 = 87 - 2x
3x + 2x = 87 - 32
5x = 55
x = 11
Hence, the value of x is 11.
Learn more about Isosceles Triangle:
https://brainly.com/question/2456591
#SPJ1
Is this line an accurate line estimate of
best fit for the data?
Yes
No
Answer:
no.........................
URGENT!!!!
Find Perimeter of the square with the side 15 in.
Use formula P=4s
100 in
60 in
225 in
30 in
Answer:
It's 60 in
Step-by-step explanation:
P = 4s
P = 4 x 15
P = 60 in
Need help with this question
Answer:
C. x = 3
Step-by-step explanation:
8x - 8 = 2x + 10
get the x on it's own
8x - 8 + 8 = 8x
2x + 10 + 8 = 2x + 18
8x = 2x + 18
8x - 2x = 6x
2x + 18 - 2x = 18
6x = 18
now divide each side by 6
6x / 6 = x
18 / 6 = 3
x = 3
X=3
Explanation
8x-8=2x+10
6x=18
x=3
Item 5
Find the area of the circle. Round your answer to the nearest hundredth.
area: about
cm2
HELP!!
Which of the following statements is TRUE if angle 4 has a measure of 127°?
А
<1 = 53°
B
<2 = 53°
с
<3 = 127
D
<3 = 180°
HELP!!
Answer:
A
angle 1 + angle 4 is equal to 180
if angle 4 = 127, angle 1 must equal 53
Step-by-step explanation:
geometry, can u help????
who is This Help me
Find the 11th term of the geometric sequence 6, -18, 54,
Answer:
354294
Step-by-step explanation:
a₁ = 6 = 6 * (-3)⁰
a₂ = -18 = 6 * (-3)¹
a₃ = 54 = -18 * (-3) = 6 * (-3)²
a₁₁ = 6 * (-3)¹⁰ = 354294
AAAAAAAAAAAAAAAAA HELP
Please answer! I’ll make brainliest
Answer:
16 feet
Step-by-step explanation:
We are Given that
We have a 34 foot ladder leaning against a 30 foot buildingWe are asked to find the distance of the bottom ladder from bottom of the building.A ladder leaning against a object makes the ladder slanted so that means 34 is our hypotense.
The building height And distance of the bottom of ladder and building is our legs so our formula we use is
[tex] {30}^{2} + {x}^{2} = {34}^{2} [/tex]
[tex]900 + {x}^{2} = 1156[/tex]
[tex] {x}^{2} = 256[/tex]
[tex]x = 16[/tex]
Find the difference of 58.2–27.674.
a. 30.652
b. 30.526
c. 35.026
d. 35.620
Answer:
B
Step-by-step explanation:
You just subtract
f(x)=-x^2-14 find f(9)
Answer:
Step-by-step explanation:
f(x) = -x² - 14
f(9) = -9² -14 = -81-14 = -95
Find the range of each function for the given domain-
Answer:
42
90
Step-by-step explanation:
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PLS I NEED HELP QUICKLY
Answer:
b + b + h + h and since you have two of each you can say 2b + 2h.
Can somebody help me with this math question, all you have to do is answer the equation, then it's described, and then it draw it out I'll give you 100 points and a Brainliest
Answer:
x=-2
Step-by-step explanation:
add 18 to both sides, simplify, add 6x to both sides, simplify, divide both sides by -12.then simplify again... I hope that helps...
chords with inscribed angles
Answer:
A:
i) ∠ABC is an inscribed angle
ii) ∠ATC is a central angle
B: ∠ABC = 150/2 = 75°
C: ∠ATC = 150°
Somebody help ASAP hurry
Answer:
540 divided by 9
Over estimated
Please mark as brainliest!
Please can i have the correct answer this is a important test
I will mark you brainliest
I just need part B only
Answer:
thin think back to wen you were l lerning about it come on you can do it
BEST ANSWER GETS BRAINLIEST, THANKS ON ANSWER, AND THANKS ON YOUR PROFILE!
Answer:
I thinks it's the third one
Which of the following could be classified as a census?
A.) a survey of a percentage of each state’s population about voting choices
B.) a survey of each student in a school about school lunch options
C.) a survey of all the children in a supermarket to determine the favorite cereal brands of the general population
D.) a survey of all the women on Main Street to determine the current movie preferences of all people over age 20
Answer:
the answer should be c..
Find the volume of the prism.
5 ft
3 ft
5 ft
4 ft
Answer:
you have to show the prism