Cramer's rule is an explicit formula for the solution of a system of linear equations. That has many equations as unknowns and valid whenever the system has a unique solution.
Answer:
Cramer's rule is an explicit formula for the solution of a system of linear equations with as many equations as unknowns, valid whenever the system has a unique solution.
Helppppppppp meeeeeeeeeeeeeeee
Answer:
x = 16
Step-by-step explanation:
(5x + 14)° + (x + 19)° + (2x + 19)° = 180°
8x + 52 = 180
8x = 128
x = 16
find the area of the circle use 3.14 for it d = 10 cm a = ? cm^2
NO TROLLS TY
Answer:
78.5 cm²
Step-by-step explanation:
GIVEN :-
Diameter of the circle (d) = 10 cmπ = 3.14TO FIND :-
Area of the circle (a)FORMULAES TO BE USED IN THIS QUESTION :-
[tex]Radius = \frac{Diameter}{2}[/tex][tex]Area = \pi \times (Radius)^2[/tex]SOLUTION :-
[tex]Radius\: (r) = \frac{Diameter}{2} = \frac{10}{2} = 5 cm[/tex]
[tex]=> Area = \pi r^2[/tex]
[tex]= 3.14 \times (5)^2[/tex]
[tex]= 3.14 \times 25[/tex]
[tex]= 78.5 \: cm^2[/tex]
Given(a*b)*c=a*(b*c) what property does this represent
Answer:
The associative property allows us to change groupings of addition or multiplication and keep the same value. (a+b)+c = a+(b+c) and (a*b)*c = a*(b*c).
Step-by-step explanation:
in mathematics, either of two laws relating to number operations of addition and multiplication, stated symbolically: a + (b + c) = (a + b) + c, and a(bc) = (ab)c; that is, the terms or factors may be associated in any way desired.
Answer:
Associative
Step-by-step explanation:
Adam builds model rockets. Where he lives, his backyard is 12 feet below sea level. When he ignites his rocket, it flies a maximum of 350 feet straight up into the air before releasing its parachute. What is the altitude of Adam’s rocket at its highest point, as measured from sea level
Answer:
338 feet
Step-by-step explanation:
350 - 12 = 338
Help me to do this question plz
2x+10 = x+25 (being vertically opposite angle)
2x-x = 25-10
x = 15
Answer:
x = 15
Step-by-step explanation:
The 2 angles are vertical angles and congruent, then
2x + 10 = x + 25 ( subtract x from both sides )
x + 10 = 25 ( subtract 10 from both sides )
x = 15
cept WHP
There is a line whose y-intercept is -2 and whose slope is 10. What is its equation in
slope-intercept form?
Write your answer using integers, proper fractions, and improper fractions in simplest form.
y =
Work out angle bxc give a reason for each angle you work out
Answer:
is there a pic to go along?
Step-by-step explanation:
? i need a pic
Please help me lovee<3
Which of the following equations
has - 4 as a
as a possible value of p
Answer:
You need to add the eqautions
Step-by-step explanation:
Bal Bharti Vidyalaya is located in the Karauli district of Rajasthan. The school decided to go for a plantation drive for 2 days on the occasion of Vanmahotsava. The Principal of the Vidyalaya asked the forest department to provide plants. It was decided that each student has to plant an equal number of trees on both days. On the first day, all the participants planted 5 trees each. The number of boys and girls who participated was in the ratio 5:4. (i) If the number of trees planted by the students on the first day was 5400, how many boys participated? [1] (ii) Find the total number of students who participated in this program? [1] (iii) If the total number of trees planted on the second day was 7560, then how many trees were planted by each one of them
Answer:
i). 600 Boys
ii). 1080 Students
iii). 7 Trees each students On Second day
Step-by-step explanation:
According to the Question,
Given, Bal Bharti Vidyalaya is located in the Karauli district of Rajasthan. The school decided to go for a plantation drive for 2 days on the occasion of Vanmahotsava. The Principal of the Vidyalaya asked the forest department to provide plants. It was decided that each student has to plant an equal number of trees on both days. On the first day, all the participants planted 5 trees each. .The number of boys and girls who participated was in the ratio of 5x:4x.i). If the number of trees planted by the students on the first day was 5400.
We Know, Each Student Has Planted 5 Plants on First day So, Girls And Boys Ratio are 5x : 4x , Thus Total Students Are 9x .NOw, This 9x Planted 9x × 5 ⇒ 45x Trees on First Day.
45x = 5400 ⇔ x=120
So, The Number Of Boys Are 5x = 5 * 120 ⇒ 600Boys
And, The Number of Girls Are 4x = 4 * 120 ⇒ 480Girls
ii). the total number of students who participated in this program is 600 boys + 480 Girls = 1080 Students.
iii). If the total number of trees planted on the second day was 7560. We Know Every Student Plant Equal Number Of trees on each day.
So, 1080 Students Planted 7560 Plants
Therefor, each Student Planted 7560/1080 = 7 Trees Each On Second day.
Square root of 556516 by long division method.
Please any Mathematics Moderator:(
Help me please!:(
Step-by-step explanation:
hear is your answer but I am not moderator
answer is 746
What is the value of the expression below?
2[3(4+1)]-2
Answer:
28
Step-by-step explanation:
2[3*5]-2
2*15-2
30-2
28
During a sale, a store offered a 20% discount on a stereo system that originally sold for $320. After the sale, the discounted price of the stereo system was marked up by 20%.
Answer:
354 $ is correct
Step-by-step explanation:
your v id dead
!!I NEED AN ANSWER QUICKLY!!
Answer:
Step-by-step explanation:
Ans:A.
6×5÷2×11=165
Answer:
A
Step-by-step explanation:
The volume (V) of the tent is calculated as
V = Al ( A is the area of the triangular end and l is its length )
A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the height )
Here b = 5 and h = 6 , so
A = [tex]\frac{1}{2}[/tex] × 5 × 6 = 15 ft² , then
V = 15 × 11 = 165 ft³ → A
Representa en lenguaje algebraico el siguiente enunciado: La mitad de un número aumentado en seis unidades
Question 3 of 10
of the way from
What is the location of the point on the number line that is
A = 5 to B = 23?
O
A. 8
B. 9
C. 10
D. 7
Answer:
B. 9
Step-by-step explanation:
solve it and u will find out
Which expressions are equivalent
27x/9x
Answer:
3x
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
You have [tex]\frac{27x}{9x}[/tex]
You can factor out the x in the numerator and denominator to get [tex]\frac{27}{9}[/tex]
You can further simplify this by factoring out a 9 => [tex]\frac{3(9)}{(9)}[/tex]
Thus getting 3
I need help...........
Answer:
4
Step-by-step explanation:
Break down the shape into a rectangle and a triangle
To find the base of the triangle subtract
(3x-1)-(x+1)= 2x-2
which means the area of the triangle is
.5(2x-2)(x-1)= x²-2x+1
Let's then find the area of the rectangle
(x+1)(x-1)= x²-1
Take the sum and set this equal to 40
(x²-2x+1)+(x²-1)=40
simplify...
2x²-2x-40=0
x²-x-20=0
(x-5)(x+4)=0
Reject the negative answer and get x=5
Then it's just a matter of plugging in x=5 for the height (x-1)
5-1=4 which is the final answer
Answer:
4 cm.
Step-by-step explanation:
Area formulas:
A(Rectangle) = bh
A(Triangle) = 1/2bh
A(Trapezium) = A(Rectangle) + A(Triangle)
Use the information given and substitute the values to solve for the missing height:
A(Rectangle) + A(Triangle) = A(Trapezium)
bh + 1/2bh = 40
(x + 1)(x - 1) + 1/2(2x - 2)(x - 1) = 40
x² - 1 + x² - 2x + 1 = 40
2x² - 2x = 40
2x² - 2x - 40 = 0
Use Quadratic Formula to solve for x:
a = 2, b = -2, c = -40
x = (-b ± √(b² - 4ac))/2a
x = (-(-2) ± √((-2)² - 4(2)(-40)))/2(2)
x = (2 ± 18)/4
x = 5 and x = -4
Since we cannot have a negative height, we use x = 5:
h = (5) - 1 = 4
Therefore, the height of the trapezium is 4 cm.
A and B are the subsets of a universal set U. If U = {1,2,3,4,5,6,7,8,9,10} A={1,2,3,5,7,9} and B ={1,2,3,6}, show that AUB complement=AΠB complement
Answer:
AUB= {1,2,3,5,6,7,9}
AnB={1,2,3}
complete the table of values for y=2x+3
Question 1 of 10
Look at this table.
Hours of
Training
10
20
30
40
50
60
70
Monthly
Pay
1250
1400
1550
1700
1850
2000
2150
According to the table, how many hours of training would you
need to have a monthly pay of $2450?
Answer:
90 hours of training would you need to pay
Answer:
90hours
Step-by-step explanation:
Addition of 10 hours= Addition of 150$
an=a+(n-1)d
2450=1250+(n-1)(150)
120/15=n-1
8+1=n
n=9
and 9x10=90 (each n=10hours)
Thus:
B. 90 hours
Brianliest please
The length of the base of an isosceles triangle is x. The length of a leg is 3x−7. The perimeter of the triangle is 77. Find x.
help me..........
only 12......
Answer:
Step-by-step explanation:
Step-by-step explanation:
the answer is in the image above
how to find the area of triangle?
Answer:
[tex](i). \\ { \tt{area = 2(\frac{1}{2} \times base \times height}} )\\ = 4 \times 3 \\ = 12 \: sq \: units \\ \\ (iii). \\ = \frac{1}{2} \times 8 \times 6 \\ = 24 \: sq \: units \\ \\ (ii). \\ = \frac{1}{2} \times 12 \times 5 \\ = 30 \: sq \: units[/tex]
Mary took 8 tests in science and received the following scores: 87,60,76,92,63,91,88,75
Answers:
mean = 79mode = nonemedian = 81.5=================================================
Explanation:
To get the mean, you add up the numbers and then divide by n = 8, since there are 8 scores
Adding the scores gets us: 87+60+76+92+63+91+88+75 = 632
Divide that over n = 8 to get 632/n = 632/8 = 79
The mean is 79
You have the correct answer. Nice work.
---------------
The mode is the most frequent value.
In this data set, we don't have any repeated values. Each unique number is listed one time only. So that tells us we don't have a mode here.
---------------
To get the median, we need to sort the items from smallest to largest
{87,60,76,92,63,91,88,75} sorts to {60,63,75,76,87,88,91,92}
Because we have n = 8 values, which is an even number, this tells us that the median is between slot n/2 = 8/2 = 4 and slot 5
The values 76,87 are in slots four and five in that order. Add them up and divide by 2: (76+87)/2 = 163/2 = 81.5 is the median
In the right triangle shown in the diagram below,
what is the value of x to the nearest whole number?
Answer: (3) 21
Step-by-step explanation: 20.78 rounded to 21
seratus di tambah dua puluh berapa?
Answer:
120Step-by-step explanation:
▶️ Penyelesaian:
100
20 +
120 ✅
Answer:
what?
Step-by-step explanation:
find the Hcf of 15 30 90
Answer:
15=3*5
30=5*6
90=5*3*5*2*3
So, HCF=15
Step-by-step explanation:
Hope it helps
Step-by-step explanation:
Hey there!
HCF stands for highest common factor. When you are asked about to find the HCF of any number find the factors and take common from all the factors of the numbers.
The given numbers are: 15,30,90.
15 = 3*5
30 = 2*3*5
90 = 2*3*3*5
Now, from the above solutions take all the common factors.
From the factors of all three numbers, 3*5 are common.
Therefore, the HCF of the numbers is 3*5 = 15.
Hope it helps!
PLEASE HELP QUICKLY LIKE IN THE NEXT 5 mins plz !!) The function MX) = -x - 4x + 5 is shown on the graph.
Which statement about the function is true?
12
(-2,9).
O The domain of the function is all real numbers less
than or equal to -2
O The domain of the function is all real numbers less
than or equal to 9
The range of the function is all real numbers less
than or equal to -2.
The range of the function is all real numbers less
than or equal to 9.
12
12
-10
Step-by-step explanation:
you did not show us the graph, and your problem description is a bit gibberish - I am sure there are some important parts missing.
therefore it is impossible to answer this.
The pair of triangles below have two corresponding parts marked as congruent. What additional information is
needed for a HL congruence correspondence?
A. ∠M≅∠H
B. LM≅JK
C. LM≅JH
D. LN≅JK
(there is a line above the letters besides a)
Answer:
C. LM ≅ JH
Step-by-step explanation:
The criteria that needs to be satisfied before two right triangles can be said to be congruent to each other is by the Hypotenuse-Leg Theorem are:
1. Both must have a corresponding leg that are congruent to each other.
In the diagram given above, NM is congruent to KH. They are corresponding legs that are congruent.
2. The hypotenuse of one triangle must be equal to that of the other.
We are not given if the hypotenuse of one, LM is congruent to the hypotenuse of the other, JH.
Therefore, the additional information required would be:
LM ≅ JH