Step-by-step explanation:
£1.32/11=.....a
...a*by7
9x - 6y = -21 and 6x - 12y = -6 How would I solve by substitution?
Answer:
(-3,-1)
Step-by-step explanation:
6x-12y=-6
6x=12y-6
x=2y-1
9(2y-1)-6y= -21
18y-9-6y=-21
12y= -12
y=-1
6x-12(-1)=-6
6x+12= -6
6x=-18
x=-3
Answer:
x = -3 ; y = -1
Step-by-step explanation:
Let 9x - 6y = -21 be eqn.1 & let 6x - 12y = -6 be eqn.2 .
Lets find the value of x from eqn.1
[tex]9x - 6y= -21[/tex]
[tex]=> 3(3x - 2y) = -21[/tex]
[tex]=> 3x - 2y = \frac{-21}{3} = -7[/tex]
[tex]=> x = \frac{2y - 7}{3}[/tex]
Now , lets put the value of x (which we got from eqn.1) in eqn.2 :-
[tex]6x - 12y = -6[/tex]
[tex]=> 6(x - 2y) = -6[/tex]
[tex]=> x - 2y = \frac{-6}{6} = -1[/tex]
(Putting x here)
[tex]=> \frac{2y - 7}{3} - 2y = -1[/tex]
[tex]=> \frac{2y - 7 - 6x}{3} = - 1[/tex]
[tex]=> -4 y - 7 = -1 \times 3 = -3[/tex]
[tex]=> -4y = 7 - 3 = 4[/tex]
[tex]=> y = \frac{-4}{4} = -1[/tex]
Now , lets find the value of x.
[tex]x = \frac{2y - 7}{3}[/tex]
Putting y = -0.5 gives ,
[tex]x = \frac{[2 \times (-1)] - 7}{3}[/tex]
[tex]=> x = \frac{-2 - 7}{3} = \frac{-9}{3} = -3[/tex]
4 .subtract the H.C. F of 8, 12 and
16 From the H.C. F OF 14 and 28.
Answer:
HCF 8, 12, 16 = 4
HCF 14, 28 = 14
14 - 4 = 10
The school is planing a file trip they have 81 busses .each bus has 62 seats how many students can go
Answer:
5,022 Students
Step-by-step explanation:
All you have to do it multiply!
Like so:
81*62= 5,022
suppose you had a new candy jar with the same ratio of jolly ranchers to jawbreakers as shown above, but it contained 100 jolly ranchers. how many jawbreakers would you have?
Answer:
100
Step-by-step explanation:
if its the same then its 100
Decide whether the relation is a function, and give the domain and range.
What is the constant in this expression 4x+5y-3? (3 points) a 4x b y c 5 d 3
Answer:
-3 is a constant.
Step-by-step explanation:
The given equation is :
4x+5y-3 ...(1)
The general equation is :
ax+by+c ...(2)
c is a constant
If we compare equations (1) and (2), we find that.
c=-3
Hence, the constant in this expression is -3.
Please help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
show your work
Answer:
61
Step-by-step explanation:
1/5 = .2
so you do 12.2 / .2 which gives you 61
Answer:
Your answer is 61
Step-by-step explanation:
Step 1. Convert 12.2 into a fraction. (I chose to put 12.2 over 10 so in the end it's 122/10.)
Step 2. Layout your problem
Remeber when dividing fractions it Keep, Change, Flip.
122/10 x 5/1
Step 3. Solve
122/10 x 5/1 = 61
That should be your answer to the problem :)
Kwahi had to buy a case of water for his teammates. The water was 4.99 for a 24-pack. What is the unit rate for one bottle of water
Answer:
Around 21 cents per bottle.
Good price!
Write an equation that represents the graph
Answer:3:40 ratio
Step-by-step explanation:
73+p=151 help addition and subtraction equations
Answer:
p=78
Step-by-step explanation:
73+p=151
73-73+p=151-73
p=78
your portfolio has grown from $2500 to $3800 what is the percent of growth rate
Answer:
52%
Step-by-step explanation:
HELP ASAP!!!!
PLEASE HELP
Answer:
b=7/33 c= 14/33
Step-by-step explanation:
Repeat all 21 they are repeating decimals
for b its 100x-x=21.21 repeating the 21 -0.21 repeating the 21 = 100x-1x=(21+0.21)-0.21= (100-1)x=21+0.21-0.21 [ stop repeating the 21's up to here] and 99x=21+0 = 99x=21 = 99x/99=21/99 both 99's cancel leaving 3x7 divided by 3x33 = x= cancel both 3's leaving 7 over 33 This should help you learn to solve c good luck
Part A
What is the y-intercept and what does it represent?
Part B
What is the x-intercept and what does it represent?
Answer:
a) The y-intercept is 160. It represents the initial distance Jayden was from his home.
b) The x-intercept is 4. It represents the amount of time taken for Jayden to reach his home.
Step-by-step explanation:
The y-intercept can be found by looking at the value of y when x=0. When x=0, y= 160. Since the x-axis is the amount of time in hours, x=0 would mean the initial time. The x-axis is the number of miles from Jayden's home thus, Jayden was 160 miles away from his home when x=0 hours.
The x-intercept can be found by looking at the x value when y=0. When y=0, x=4. This means that it took Jayden 4 hours to reach home or 4 hours to travel 160miles to his house.
The cost price of a car is 450 naira and the selling price is 504 naira what is the percentage again
Answer:
12%
Step-by-step explanation:
The car is sold at a gain because its selling price is greater than cost price
Profit = [(selling price - cost price) / cost price ] x 100
[tex]\frac{504 - 450}{450}[/tex] x 100
[tex]\frac{54}{450}[/tex] x 100 = 12%.
7 penguins for $188.88 ________ each
Answer:
$26.98 each
Step-by-step explanation:
Answer:
Approximately $26.98 each
Step-by-step explanation:
Divide 188.88 by 7 to get the cost for each. The round to the nearest hundredth.
At dinner, the meal cost $24 and the sales tax was $1.32. What was the tax rate? Write your answer as the percent with no % sign
Answer:
5.5
Step-by-step explanation:
Sales tax = tax rate × Cost of meal
Sales tax = $1.32
Tax rate = x%
Cost of meal = $24
Sales tax = tax rate × Cost of meal
1.32 = x% × 24
1.32 = x/100 × 24
1.32 = 24x/100
1.32 * 100 = 24x
132 = 24x
x = 132/24
x = 5.5%
= 5.5
X = 1 y = -8 Are the two linear equations parallel, perpendicular, or neither?
Answer: Perpendicular
Step-by-step explanation:
Janice rolls a fair number cube sixty times. She rolled the number four 12 times.
What is the experimental probability of rolling the number four?
Answer:0.5
Step-by-step explanation:
60➗12
Probability of an event is the measure of its chance of occurrence. The experimental probability of Janice rolling the number four is 0.2
What is experimental probability?Experimental probability calculates the probability of some event from the results of experiments.
For an event E, we get the experimental probability of that event
[tex]P_e(E) = \dfrac{\text{Number of times E occurred}}{\text{Number of times experiments was done}}[/tex]
where, [tex]P_e(E)[/tex] is denoting experimental probability of occurrence of E.
For this case, we're specified that:
The event in consideration is "Rolling the number 4"
The times she rolled the number 4 is: 12
She got four 12 times in 60 rolls of the considered cube.
Thus, we have:
E = Rolling the number 4 on the considered cubeNumber of times E occured = 12Number of times experiment was done = 60Thus, we get:
[tex]P_e(E) = \dfrac{\text{Number of times E occurred}}{\text{Number of times experiments was done}} = \dfrac{12}{60} = \dfrac{1}{5} = 0.2[/tex]
Thus, the experimental probability of Janice rolling the number four is 0.2
Learn more about experimental probability here:
https://brainly.com/question/2547434
5x = y +6
5x + 2y = 3
I forgot how to solve it I need help
Answer:
Y=3
X=9/5
Step-by-step explanation:
(1) 5x=y+6
(2) 5x+2y =3
Replace (1) to (2) => (y+6)+2y=3 => y=3
Replace y=3 to (2) => 5x = 3+6 => 5x=9 => x=9/5
Choose the correct equation for the line shown on the graph?
y = x - 1
y = - x - 1
y = x - 4
y = - x - 4
Answer:
y=-x-1
Step-by-step explanation:
What PERCENT is equivalent to 3 4/5?
3.6
36%
360%
Answer:
380%
Step-by-step explanation:
Turn into an improper fraction:
3x5=15 15+4= 19/5
You can do two ways
multiply by 20
19 x20 380
------ = ----------
5 x20 100
Other way: put into calculator
3,8
Turn into percent by multiplying by 100
=380
please help this was due
Answer:
maybe. hope this help....
Suppose y varies at a constant rate of change of 0.5 with respect to x (so that Δ y = 0.5 ⋅ Δ x ), and y = 1.5 when x = 3 .
Answer and explanation:
Given the above, we find y in terms x
change in y change in x = 0.5
The formula for a straight line is y= mx+b where m is slope of the line and b is the y intercept
We substitute given values above in the straight line equation:
y=mx+b
1.5= 0.5×3+b
1.5=1.5+b
b= 0
y in terms of x for the line is therefore given by the formula :
y=0.5x+0
if one face of a cube has an area of 6.75 square inches , what is the surface area of the entire cube ?
Answer:
40.5
Step-by-step explanation:
a cube has 6 faces so 6.75 x 6 = 40.5
PLEASE PLEASE PLEASE SOMEONE HELP!!!!!!
Answer:
8,3
Step-by-step explanation:
Helpppp pleaseeeee??????
Ray orders a sandwich at a deli
Club on white bread
Step-by-step explanation:
6x2-2x3+x4
Please help
Answer:
it's equals 7
Step-by-step explanation:
A company pays its employees $26 for every 4 hours of overtime worked in a day.
Mike works 9 hours of overtime and is paid $53.
Rachael works 8 hours of overtime and is paid $52.
Tom works 17 hours of overtime and is paid $442.
John works 16 hours of overtime and is paid $100.
Which employee receives an appropriate payment for the hours of overtime worked, according to the given rate?
A.
Mike
B.
Rachael
C.
Tom
D.
John
Answer:
it's answer is B
4 hours = $26
1 hour = $26/4 = $13/2
8 hour = $13/2 * 8
= 13 * 4 = $52
hope it helps you
Answer:
B. Rachael
Step-by-step explanation: each employee gets paid 26 dollars per 4 hours so Rachael's total was $52 so 26 times 2 = 52 . I hope this helps!!
Lease solve I will give brainliest
