Selesaikan persamaan linear serentak berikut.
2x + y = -5
3x - 4y = 9
Answer:
(-1;-3)
Step-by-step explanation:
[tex]\left \{ {{4(2x+y)=4*(-5)} \atop {3x-4y=9}} \right. \ => \ \left \{ {{8x+4y=-20} \atop {3x-4y=9}} \right. \ => \ \left \{ {{11x=-11} \atop {2x+y=-5}} \right. \ => \ \left \{ {{x=-1} \atop {y=-3}} \right.[/tex]
Can we get enough salt distributed out to the residents of Utah before the zombies over take all of Utah?
options:
Yes, by the time Morton's salt distributes 5,700,000 cans of salt the zombie population will only be 3,670,016
No, by the time Morton's salt distributes 3,300,000 cans of salt the zombie population will be 3,670,016 and the zombies will have taken over
Not enough information is given to know if the zombies will infect all of the residents of Utah.
All of the above
Answer:
C
Step-by-step explanation:
... thanks for the points btw. Ummm... people ain't zombified... yet?
Answer:
Not enough information is given to know if the zombies will infect all of the residents of Utah?
please help I dont understand
Answer:
Step-by-step explanation:
Find the slope between (9 , 75) and (13 , 95)
How many groups of 24 can we make with 324 foil beads?
Answer:
13.5
Step-by-step explanation:
324/24=13.5
find the measure of each angle indicated.
Answer:
where are the angles...........
Lillian's bedroom door is 9 feet tall and 3 feet wide. A new door would cost $3.00 per square foot. How much would a new bedroom door cost in total?
Answer:
$81.00
Step-by-step explanation:
First find the square feet:
9*3= 27
Then find total cost:
27*3= 81
Hope this helps! :)
Edward has a hot dog stand. Last week he spent $13 for hot dogs and
supplies. He earned $25. What was his profit? answer:
9. A cup of tea costs x pence. Coffee costs 20 pence more. Hermes buys 2 cups of tea and one cup of coffee. In total Hermes pays £3.80. Work out the cost of a cup of tea.
Answer:
£1.20Step-by-step explanation:
Given:
Tea = xCoffee = x + 0.2Comparing the total cost, work out the value of x:
2x + x + 0.2 = 3.803x = 3.60x = 1.20m/5=3(2m+1) verbal expression
Answer:
m = -15/29
Step-by-step explanation:
1) Distribute
[tex]\frac{m}{5} =6m+3[/tex]
2) Subtract 6m from both sides of the equation
[tex]\frac{m}{5} -6m=6m+3-6m[/tex]
3) Simplify
a. Find common denominator
[tex]\frac{m}{5} +\frac{5(-6)m}{5} =6m+3-6m[/tex]
b. Combine fractions with common denominator
[tex]\frac{m+5(-6)m}{5} =6m+3-6m[/tex]
c. Multiply the numbers
[tex]\frac{m-30m}{5} =6m+3-6m[/tex]
d. Combine like terms
[tex]\frac{-29m}{5} =6m+3-6m[/tex]
e. Combine like terms
[tex]\frac{-29m}{5} =3[/tex]
4) Multiply all terms by the same value to eliminate fraction denominators
[tex]5 *\frac{-29m}{5} =5*3[/tex]
5) Cancel multiplied terms that are in the denominator
[tex]-29m=5*3[/tex]
6) Multiply the numbers
[tex]-29m=15[/tex]
7) Divide both sides of the equation by the same term
[tex]\frac{-29m}{29} =\frac{15}{-29}[/tex]
8) Simplify
a. Cancel terms that are in both the numerator and denominator
[tex]m=\frac{15}{-29}[/tex]
b. Divide the numbers
[tex]m=-\frac{15}{29}[/tex]
Suppose you graph the point's time and distance and your friend graphs distance time how will your grass be different
Answer: ABC EASY AS 123
Step-by-step explanation:
Factor the expression
Answer:
(2x+1)(x−2)(2x−5)
Step-by-step explanation:
(3x−6)(4x2−1)−(2x−4)(4x2+4x+1)
4x3−16x2+11x+10
=(2x+1)(x−2)(2x−5)
What is the square root of 18 plus the square root of 2? And is it rational or irrational?
Which equation represents a line that has a slope of 1/3 and passes through point (-2,1)?
Answer:
The equation would be y - 1 = 1/3(x + 2)
Step-by-step explanation:
In order to find this, we simply plug the values we have into point slope form.
y - y1 = m(x - x1)
y - 1 = 1/3(x - -2)
y - 1 = 1/3(x + 2)
Step-by-step explanation:
Answer:
Step-by-step explanation:
Slope = m = 1/3
(-2 , 1)
[tex]y - y_{1}= m(x - x_{1})\\y - 1 = \dfrac{1}{3}(x -[-2] )\\\\y - 1 = \dfrac{1}{3}(x + 2)\\\\y - 1 =\dfrac{1}{3}x + \dfrac{1}{3}*2\\\\y=\dfrac{1}{3}x+\dfrac{2}{3}+1\\\\y=\dfrac{1}{3}x +\dfrac{2}{3}+\dfrac{3}{3}\\\\y=\dfrac{1}{3}x +\dfrac{5}{3}[/tex]
The location of the vertex Q after the dilation is (-2,-2). What is the location of vertex M after the dilation?
The location of vertex M after the dilation by a factor of 1/4 is at (-4, 3)
Dilation is a way of moving an object from a point on a plane to another location.
From the diagram attached, the coordinate of the vertex Q is at (-8, -8).
If the vertex Q after the dilation is (-2,-2), this means that the original coordinate is dilated by a factor of 1/4.
The vertex of coordinate M from the diagram is (-16, 12). Dilating the coordinate using a scale factor of 1/4 will give;
M' = (-16/4, 12/4) = (-4, 3)
Hence the location of vertex M after the dilation is at (-4, 3)
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can someone please help me
Answer:
x = 1 and it's undefined yaaaaaaaaaaa
First person to answer will be marked brainliest
Answer:
b is the answer ........
Simone wrote that 2 + 5.8 = 6.
Use the drop-down menus to explain why 6 is incorrect.
Answer:
2 + 5.8 cannot be 6 because 2 + 5.8 is 7.8.
Six is a correct sum to the expression 0.2 + 5.8, not 2 + 5.8.
twenty four less than two times a number x.. pls help.
Answer:
24-2x
Step-by-step explanation:
Answer:
The equation is written as follows:
2x-24
Make life easier and answer this please
Answer:
She has 8 grandchildren
Each grandchild gets 50 cents
Step-by-step explanation:
She has $8, split between 4 sons is $2 each.
Each son splits $2 between their 4 children
2 divided by 4 is 0.50
cuanto es un numero elevado a la veinte?
Answer:
2?
Step-by-step explanation:
Using the quadratic formula, which of the following are the zeros of the quadratic equation below?
y=x²-x-5
Answer: The answer is the option A.
x=(5±)/4
Step-by-step explanation: The quadratic formula has the following form for a quadratic equation ax²+bx+c:
x=(-b±))/(2a)
We apply the quadratic formula and we obtain:
x=(-(-5)±))/(2(2))
x=(-(-5)±))/(4)
x=(-(-5)±))/(4)
Which of the following is equivalent to –(4 + (–7))?
–4 + 7
–4 + (–7)
4 + (–7)
–4 – (–7)
Answer:
-4+7, -4 - (-7)
Step-by-step explanation:
The given expression can be simplified:
-(4+(-7)) = -(4-7) = -(-3) = 3
The equivalent choices will all equal 3. Testing each choice:
-4+7 = 3
-4+(-7) = -4-7 = -11
4+(-7) = 4 - 7 = -3
-4 - (-7) = -4 + 7 = 3
Only the first and last choice are equivalent to the original expression.
2x2 + 2x-4?
Which expression is equivalent to
2x2 - 4x + 2
X+2
X-1
X-2
o – 2
x+2
X-2
If the fraction 396/x-10 is equivalent to -22, find the value of x
Answer:
-33
Step-by-step explanation:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
396/x-10-(-22)=0
Answer:
-33
Step-by-step explanation:
my work is done in the image below
The Elsie Dairy uses a machine that fills 28 cartons of milk an hour. How many will be filled in 6.5 hours?
Answer:
About 182 cartons will be filled in 6.5 hours.
Step-by-step explanation:
Multiply 6.5 by 28 to get 182
Answer:
The answer is 182
Step-by-step explanation:
28 x 6.5 = 182. if the machine fills 28 cartoons in a hour and you leave it running for 6.5 or 6 hours and 30 minutes that will be 182 cartoons filled in that amount of time.
Please help, i’m very confused. Thanks
Answer:
can't help sorry try chrome plz I hope it help you good
You are driving to a city that is 23 miles away. So far, you have driven 10 miles. How many more miles do you have to drive?
Answer:
13
Step-by-step explanation:
23-10=13 you have 13 miles more to drive.
Solve b/6 > -7 please help
Answer:
A. b > -42would be your answer.
Answer:
A. b > -42 would be the answer
Kylie is excited to learn how to ski. She went to Snowy Heights Mountain, rented a pair of skis for $35, and took 5 hours of group skiing lessons. Kylie paid $175 in all. How much does Snowy Heights charge for each hour of group skiing lessons?
Answer:
5x + 35 = 175
$28
Step-by-step explanation:
She paid 35 for 1 pair of skis. She paid a certain amount(x) for 5 hours (5x + 35). Therefor making the expression 5x + 35 = 175.
Then, solve the equation with inverse operations.
5x + 35 = 175
Step 1: Subtract 35 from both sides.
5x = 140
Step 2: Divide 5 from both sides.
x = 28
Therefore, Kylie paid $28 each hour of the group skiing lessons.
A pack of 24 crayons costs the manufacturer $0.05 to make and is sold to the stores for $0.25. The
stores sell the crayons for $0.50 during Back to School week.
An equation that represents the mark up cost by the manufacturer is (Select]
. An equation that represents the store mark up cost is (Select]
. A
V
composition of these two functions is (Select)
. It represents
[ Select]
The answers is P(C)=2c P(C) =5c P(C) =10c
We want to find equations for the different markups for the manufacturer and the stores that sell the crayons.
We know that a pack of 24 crayons costs $0.05 to make.
Is sold to stores for $0.25
The stores sell it for $0.50
Now we want to get the markup equation for the manufacturer, this is:
Markup = 100%*(price - cost)/(cost) = 100%*($0.25 - $0.05)/$0.05 =400%
For the store it is:
Markup = 100%*($0.50 - $0.25)/($0.25) = 100%
For the composition of these two I assume you refer to the total markup (notice that these are not functions, we can't make a composition if we do not have a variable).
Comp = 100%*($0.50 - $0.05)/($0.05) = 900%
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