Answer:
x = -4
Step-by-step explanation:
8x - 3 = 5(2x + 1)
8x - 3 = 10x + 5
8x - 10x = 5 + 3
-2x = 8
x = 8/-2
x = -4
what is the lowest common multiple of 3 , 4 and 2
I need help with this if you get it right I will mark you
x - 4y = 1 and 3x + 2y = -11. What is the solution to the system of equations?
Answer:
x=-3 y=-1
Step-by-step explanation:
The solution is
The value of x = -3
The value of y = -1
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the first equation be = A
Now , the value of A is
x - 4y = 1 be equation (1)
Let the first equation be = B
Now , the value of B is
3x + 2y = -11 be equation (2)
Now , on simplifying both equations , we get
Multiply equation (1) by 3 , we get
3x - 12y = 3 be equation (3)
Subtracting equation (2) from equation (3) , we get
-12y - 2y = 3 - ( -11 )
-14y = 14
Divide by -14 on both sides of the equation , we get
y = -1
So , the value of y = -1
Substitute the value of y in equation (1) , we get
x - 4y = 1
x - 4 ( -1 ) = 1
x + 4 = 1
Subtracting 4 on both sides of the equation , we get
x = -3
So , the value of x = -3
Hence , the value of x is -3 and value of y is -1
To learn more about equations click :
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You take a 325 milligram dosage of ibuprofen. During each subsequent hour, the amount of medication in
your bloodstream decreases by about 29% each hour
Answer:
oka so now what
Step-by-step explanation:
help me, please!!!!!!!
9514 1404 393
Answer:
2
Step-by-step explanation:
Alex has 10 money units. Annie has 5 money units. The ratio of amounts is ...
Alex : Annie = 10 : 5 = 2 : 1
Alex has 2 times as much money as Annie.
A rectangular has an area of 12 ft.² and a length of 5 feet what is the width
Answer:
12/5
Step-by-step explanation:
Width times Length = the area
w*5 = 12
w = 12/5
Answer:
w=2.4ft
Step-by-step explanation:
plz help my friend plz and thank you
Answer:
8.7 ≈ 9
Step-by-step explanation:
2πr = 55, so r = 55/(2*3.14) ≈ 8.7579...
A movie theater charges $12.00 for adults and $4.50 for children under the age of ten. A group of adults and children went to the movies and spent $75.00 on 10 tickets. How many adults and how many children went to the move?
Answer:
4 Adults and 6 Children went to the movies.
Step-by-step explanation:
(Children) $4.50 x 6 = $27.00
(Adults) $12.00 x 4 = $48.00
$48.00 + $27.00 = $75.00
please answer my question because it is worth a lot of points
Answer:
Triangular prism
Step-by-step explanation:
a bag contains 3 red balls 3 green ball and 1 blue ball.a ball is chosen at random and then placed back in the bag. a second ball is chosen at random. Find the probability that :a) the first ball is red?
Answer:
its a three out of seven then it stays the same
Step-by-step explanation:
what is the me big of fraction
Answer:
me big of fraction? what is that? :(
Step-by-step explanation:
Josh bought 2 pairs of $15 jeans. He also bought three shirts that were $10 each minus a $1 clearance
discount on each shirt. Finally he made a stop to get cookies for his party. The cookies cost $3 per dozen and
he needed 6 dozen. Which expression represents Josh's purchases? What was Josh's total money spent?
Answer:
Answer: $75 Equation: (15×2)+3(10-1)+(3×6)=75
Step-by-step explanation:
Whole page for 81! Good luck!
Answer:
Prime number: A prime number has factor of only 1 and itself.
Ex: 3: 1 and 3 are the only ways to compose 3.
A whole number that has factors other than 1 and itself is called a composite number.
Ex: 8: the factors of 8 include 1,2,4,8
Circle 5,7,2,19,3,11
Box 18,20,22,16,15,30,26,38,45,10,21,6,14
To determine the prime factorization of a number, you must break down a number into its factors. (im not sure?)
Continute until all of the factors are (im not sure)
Prime factorization is written exponential form (im not quite sure)
30= 2x3x5
30= 2^1 3^1 5^1
24=2 × 2 × 2 × 3
24= 2^3 x 3
sorry idrk if they are all right
The second one Thank you
What is the multiplier for a decrease of 38%?
Answer:
Step-by-step explanation:
times .62
Natalie wants to know how much money her computer costs each day if she never turns it off. She uses a meter to record the amount of energy her computer uses each day for 30 days. After recording the cost for 30 days, she determined the cost to run her computer is equal to the function /(d), where f(d) = 0.40d, where d is the number of days What is the value of '(d) at f(30)? dollars 4. What is the value of f(30) in context? I Running a computer for 30 days will cost her $ in electricity.
Answer:
Step-by-step explanation:
f(30) = 0.40×30 = $12
Running the computer for 30 days will cost $12 in electricity.
which is more, 6 miles or 31,678 feet ?
Answer: 6miles
Step-by-step explanation: 6miles = 31680ft so 31680>31678
help its pre algebra
Answer:
Burger = $15
Hot Dog = $10
Step-by-step explanation:
b=35-2h
4(b-2h)+6h=120
4(35-2h)+6h=120
140-8h+6h=120
140-2h=120
-2h=120-140
-2h=-20
h=10
b=35-2h = 35-20 = 15
Answer what you can. You don’t have to show your work but please do.
Answer:
I'll help with the first 2
( 12/4x7-18=
12/4=3
3x4=12
12-18= -6 )
( 8[tex]{2}[/tex] - 22/2x7=
8x2=16
22/2=11
11x7=77
16-77= -61 )
Step-by-step explanation:
PEMDAS
P-( ) Parenthesis
E- Ex[tex]x^{2}[/tex] (Exsample-2[tex]{2}[/tex] = 2x2=4 )
M=Multiplication X
D-Division
A-Add +
S-Subtraction
I need to write fractions as mixed numbers 36/6 20/10 15/8 13/6
36/6 = 6
20/10 = 2
15/8 = 1 7/8
13/6 = 2 1/6
Hope this helped!
Answer:
6, 2, 8 7/8, 2 1/3
Step-by-step explanation:
36/6 represents a division: 36 divided by 6
answer: 6
20/10 also division: 20 divided by 10
answer: 2
15/8 also division (long division...) 15 divided by 8
you will have a remainder (that will become your numerator)
the decimal of that division is 1.875 as a fraction that is a mixed number:
8 AND 875/1000 but!! you are not done yet (that fraction has to be simplified)
If you divide the fractional portion by the greatest common factor (125) you can simplify your fraction to 8 7/8
13/6 is 13 divided by 6 = 2 with a remainder of 2 = 2 2/6 simplified = 2 1/3
Answer these questions please:
What step did the error come in?
What did they do wrong ?
Answer:
Step 1, 4=3(d+1)-5 should be 4=3d+3-5
Step-by-step explanation:
13. How much money will 8820 Vield in investa
+ 5%. for 3 years and compounded
continuosly and semiannually and determine
which eams more?
9514 1404 393
Answer:
10,247.38 from continuous compounding10,228.50 from semiannual compoundingcontinuous compounding earns moreStep-by-step explanation:
The formula for the account balance from continuously compounded interest at annual rate r for t years is ...
A = Pe^(rt) . . . . P = principal invested
A = 8820e^(0.05·3) ≈ 10,247.38 . . . continuous compounding
__
The formula for the account balance from interest compounded semiannually at annual rate r for t years is ...
A = P(1 +r/2)^(2t)
A = 8820(1 +.05/2)^(2·3) ≈ 10,228.50 . . . semiannual compounding
Continuous compounding earns more.
Ratio 7/11 two other ways
Answer:
Isn't it 7:11 and 7 to 11
Step-by-step explanation:
A hotel has two different ice machines that fill buckets of ice independently of each other. Let A represent the amount of ice in a bucket filled by machine A, and let B represent the amount of ice in a bucket filled by machine B. Which of the following choices explains the meaning of independent random variables in context?
C.) The independence of the two ice machines means that knowing how much one machine fills does not help us predict how much the other fills.
5 x 5/10 as a fraction
2. Three fourth of the students and an additional 18 students at the school purchased a spirit shirt during the last fundraiser. If 336 shirts were ordered, how many students are there in the school?
Step-by-step explanation:
The correct answer is 237
Answer:257
Step-by-step explanation:
guys i need help on this problem I'm stuck
Answer:
y=mx+b is slope intercept form
Step-by-step explanation:
letter B :)
PLSSS HELP ASAP I BEG WILL MARK BRAINLIEST
Answer:
The awsner is C
Step-by-step explanation:
C is the awnser
In A QRS, ZRTQ - STR.
R
S
Which relationship proves that ZQRS is a right angle?
Answer:
A
Step-by-step explanation:
hhjjjjkkkdaa vhjkkjddgj hjkjcgh
Can someone help me please
Answer:
"I can find the maximum or minimum by looking at the factored expression of a quadratic function by reading off its roots and taking the arithmetic average of them to obtain the [tex]x[/tex]-coordinate of the quadratic function, and then substituting that value into the function."
Step-by-step explanation:
Because of the symmetry of quadratics (which is the case here because we have two factors of degree 1, so we are dealing with a polynomial of degree 2, which is a fancy way of saying that something is a quadratic), the [tex]x[/tex]-coordinate of the extremum (a fancy way of saying maximum or minimum) is the (arithmetic) average of the two roots.
In the factored form of a quadratic function, we can immediately read the roots: 3 and 7. Another way to see that is to solve [tex](x-3)(x-7)=0[/tex], which gives [tex]x-3=0 \vee x-7=0[/tex] (the 'V' stands for 'or'). We can take the average of the two roots to get the [tex]x[/tex]-coordinate of the minimum point of the graph (which, in this case, is [tex]x=\frac{3+7}{2} = \frac{10}{2} = 5[/tex]).
Having the [tex]x[/tex]-coordinate of the extremum, we can substitute this value into the function to obtain the maximum or minimum point of the graph, because that will give the [tex]y[/tex]-coordinate of the extremum.
