Answer:
2:6
Step-by-step explanation:
2 banana nut, to, 6 chocolate chip
-5x-18y=-28 and -10x+9y=-11 solve elimination
Answer:
[tex]\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}[/tex]
[tex]x=2,\:y=1[/tex]
Step-by-step explanation:
Given the equations
[tex]-5x-18y=-28[/tex]
[tex]-10x+9y=-11[/tex]
solving the system of the equation by elimination method
[tex]\begin{bmatrix}-5x-18y=-28\\ -10x+9y=-11\end{bmatrix}[/tex]
[tex]\mathrm{Multiply\:}-5x-18y=-28\mathrm{\:by\:}2\:\mathrm{:}\:\quad \:-10x-36y=-56[/tex]
[tex]\begin{bmatrix}-10x-36y=-56\\ -10x+9y=-11\end{bmatrix}[/tex]
[tex]-10x+9y=-11[/tex]
[tex]-[/tex]
[tex]\underline{-10x-36y=-56}[/tex]
[tex]45y=45[/tex]
[tex]\begin{bmatrix}-10x-36y=-56\\ 45y=45\end{bmatrix}[/tex]
solve 45y=5 for y:
[tex]45y=45[/tex]
[tex]\frac{45y}{45}=\frac{45}{45}[/tex]
[tex]y=1[/tex]
[tex]\mathrm{For\:}-10x-36y=-56\mathrm{\:plug\:in\:}y=1[/tex]
solve [tex]-10x-36\cdot \:1=-56[/tex] for x:
[tex]-10x-36\cdot \:1=-56[/tex]
[tex]-10x-36=-56[/tex]
Add 36 to both sides
[tex]-10x-36+36=-56+36[/tex]
[tex]-10x=-20[/tex]
[tex]\frac{-10x}{-10}=\frac{-20}{-10}[/tex]
[tex]x=2[/tex]
[tex]\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}[/tex]
[tex]x=2,\:y=1[/tex]A classroom has 4 bookcases that weigh 174 pounds altogether. If they all weigh the same amount, how much does each bookcase weigh?
Answer:
43.5
Step-by-step explanation:
174/4= 43.5
10 + -6 please help me find the answer thanks everyone for helping
Answer:
4
Step-by-step explanation:
10+-6 is the same as 10-6.
You can see this because there is a addition and subtraction symbol in the middle. You can use the KCC (keep, change, change) method to change the symbols from 10+-6 to 10-6. (You keep the 10, change the subtraction and addition symbols).
Answer: its 4
Step-by-step explanation: Because if you put it on a number line from 0 to 10. go right 10 times. then for -6 you go back left 6 times. and get 4. or just 10 - 6 = 4
Which two division sentences result in the same quotient?
0.148 ÷ 0.02
1.48 ÷ 0.02
1.48 ÷ 0.2
148 ÷ 2
Answer:
the first and third one
Step-by-step explanation:
Divide: 2 divided 1/2
2
16
8
4
Answer:
4
Step-by-step explanation:
2 / 1/2. Flip it. 2*2 which is 4
Hope this helps plz mark brainliest if correct :D
please help question eleven
a pharmacist measured 70 mL of medication by difference starting with 100 mL. He noted that the graduate used contained 35 mL of glycerin. Calculate the percentage of error incurred in the measurement.
i dont have time to do it right now but here is the percent error equation!
find the slope of a line to the line perpendicular to the line containing the points (3,-7) and (4,-3)
Answer:
4
Step-by-step explanation:
m = y2 - y1/x2 - x1
y = -3 - -7 = -3 + 7 = 4
x = 4 - 3 = 1
m = 4/1
answer should be 4... If i am correct hope that helps
what is 1/8 as a percentage ?HELP
Answer:
12.5%
Step-by-step explanation:
Write 18 as a percent. Divide 1 by . Therefore, the fraction 18 is equivalent to 12.5% .
John is hanging 146 feet of Halloween lights on the sides of his rectangular fence that encloses his property. The length is five feet less than five times the width. Find the length of the fencing.
Answer:
1347 feet in the space of the suns house
Step-by-step explanation:
if y=4x+3 were changed to y=-4x+3, how would the graph of the new funtion compare to the original
Answer:
graph would go to the left 4 units instead of to the right 4 units then up 3
Step-by-step explanation:
read above
How long would it take the two trains to meet?
Answer: 2.5 hours.
Step-by-step explanation:
Please help I am struggling.
Answer:
16in
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
if you add one you get 15, and
In the diagram, ABCD is a parallelogram. The
diagonals of the parallelogram intersect at point T.
HELP
Answer:
A. 100 degrees
Step-by-step explanation:
Given:
[tex] m\angle ABC = 3y + 5 [/tex]
[tex] m\angle ADC = 5y - 45 [/tex]
Required:
[tex] m\angle BCD [/tex]
SOLUTION:
✍️First, create an equation that you will use to find the value of y.
[tex] m\angle ABC = m\angle ADC [/tex] (opposite angles of a parallelogram are congruent to each other)
[tex] 3y + 5 = 5y - 45 [/tex] (substitution)
Collect like terms
[tex] 3y - 5y = -5 - 45 [/tex]
[tex] -2y = -50 [/tex]
Divide both sides by -2
[tex] y = 25 [/tex]
✍️Next, find [tex] m\angle ABC [/tex] and [tex] m\angle ADC [/tex].
[tex] m\angle ABC = 3y + 5 [/tex]
Plug in the value of y
[tex] m\angle ABC = 3(25) + 5 = 75 + 5 = 80 [/tex]
[tex] m\angle ADC = 5y - 45 [/tex]
Plug in the value of y
[tex] m\angle ADC = 5(25) - 45 = 125 - 45 = 80 [/tex]
✍️Next, find [tex] m\angle BCD [/tex].
[tex] m\angle BCD + m\angle ADC = 180 [/tex] (consecutive angles in a parallelogram are supplementary)
[tex] m\angle BCD + 80 = 180 [/tex] (substitution)
Subtract 80 from each side
[tex] m\angle BCD = 180 - 80 [/tex]
✅[tex] m\angle BCD = 100 [/tex]
You want to enlarge the picture by a factor of 4 from its current size of 5 inches by 7 inches what is the size of the enlarged picture
Answer:
20 inches by 28 inches
Step-by-step explanation:
The current size of the picture is 5 inches by 7 inches
If we want to enlarge the picture by a factor of 4, the perimeter will also increase by the factor of 4.
New dimension = 4(old dimensions)
= 4(5 inches by 7 inches)
= 20 inches by 28 inches
Hence, the size of the enlarged picture is 20 inches by 28 inches.
Find the unit rate of 1/2 pounds : 5 days
Answer:
I believe the unit rate for this is 0.1 pounds per day
Step-by-step explanation:
you need to divide 1/2 and 5 to get your answer
Find the quotient of -36 / -6
Answer:
6
Step-by-step explanation:
-36/-6 = 6
Answer:
The answer is positive 6.
Step-by-step explanation:
Hope this helps!
help plsplspls !! :)
Answer:
I want to say it's -69/100
Step-by-step explanation:
Hope that helps!
12. An initial amount of 100 grams of the radioactive isotope thorium-234 decays according
to
A(t) = 100e^-0.02828t
where t is in years. How long will it be before half of the initial amount has disinte-
grated?
Answer:
Radioactive half-life An initial amount of 100 g of the radioactive isotope thorium-234 decays according to Q ( t ) = 100 e − 0.02828 t where t is in years.
Step-by-step explanation:
A graph of an inequality includes an open circle and an
arrow pointing left. Explain how you would use that
information to choose which symbol to use to write an
inequality
Answer: Since the circle is open, the symbol must be < or="">, because the boundary point is not included. The arrow points left, so the solution set includes all values less than the boundary point. I would use < in="" my="">
Step-by-step explanation:
Sample Response
The information that should be selected for symboling the equality function since the boundary point is not involved.
What is an inequality function?It is the relation type where it can graph and show any kind of relationship. rather drawing the lines for linking the dots here we have to shade the large areas for the graph.
Also, there is open circle so here the symbol should be like < or=""> since the boundary point is not involved. Also, the point of arrow should be in left hand side, so it should be lower than the boundary point.
Learn more about circle here: https://brainly.com/question/2031248
Which equation, when solved, glves 8 for the value of x?
5
7
3
3
OA. 2x+ź= 4x+14
OB. 1-9=34-12
OC 41-2=15-4
OD. *-7= x+14
Reset
Ne
Answer:
C.
Step-by-step explanation:
5/4x-2=3/2x-4
5/4x-3/2x = -4+2
(multiply both sides by 4)
5x-6x=-16+8
-x=-8
(multiply by -1)
x=8
Answer:
C
Step-by-step explanation:
[tex]\frac{5x}{2} +\frac{7}{2} =\frac{3x}{4} +14\[/tex] isolate the terms with the variable x
[tex]\frac{5x}{2} -\frac{3x}{4} =14-\frac{7}{2}[/tex] get the same denominator and combine like terms
[tex]\frac{10x-3x}{4} = \frac{28-7}{2}[/tex] solve
[tex]\frac{7x}{4} =\frac{21}{2}[/tex] crossmultiply and solve for x
[tex]x=\frac{4*21}{7*2} =6[/tex] so is not the first option
try second
[tex]\frac{5x}{4} -9=\frac{3x}{2} -12[/tex] same steps as before
[tex]\frac{5x-6x}{4}=9-12\[/tex]
[tex]\frac{-x}{4} =\frac{-3}{1}[/tex] so x=12 not the second option
try third option
[tex]\frac{5x}{4} -2=\frac{3x}{2} -4[/tex]
[tex]\frac{5x-6x}{4} =2-4[/tex]
[tex]\frac{-x}{4} =\frac{-2}{1}[/tex] so x=8
Find the x−and y−intercepts.
4x − 2y = −8
The x−intercept is
.
The y−intercept is
.
Answer:
(4,-8/5)
Step-by-step explanation:
.............
Answer:
x=y-4/2
Step-by-step explanation:2x-y=-4
2x-4=-8/2
2x=4+4
2x=4-4
Brandon bought a jacket on sale for $36. If the jacket originally cost $60, what was the percentage discount for the cost of the jacket?
Answer:
40% discount
Step-by-step explanation:
To find this remember the formula [tex]\frac{discount amount}{original price} = \frac{percent discount}{100}[/tex]
To find the discount amount subtract $36 from $60 which is $24.
[tex]\frac{24}{60} = \frac{x}{100}[/tex] next you have to cross multiply
24*100 = 2400 and 60*x = 60x
Now you have the equation 2400 = 60x
Divide both sides by 60 to isolate the variable
x = 40
Think About the Process You have 20 quarters. You find 40% more quarters in your room. Then
you go shopping and spend 75% of the total number of quarters. Write an expression to represent
the total number of quarters you take with you shopping. Calculate, in dollars, the amount of money
you have left.
What expression represents your total number of quarters?
O A. 20 +(20 - 0.75)
OB. 20+ (20 = 40)
OC. 20+ (20 x 40)
OD. 20+(20 x0.40)
Answer:
A. 1.4*20 quarters
B.14
Step-by-step explanation:
A: 1.you start with 20 quarters= 20*1
2.you find 40% of twenty quarters in your room= 4/100*20=0.4*20
3.20*1+20*0.4= 20*1.4
B:20*1.4=28
28*50/100=14
Ther are 5,290 students at Highline College. If each college classroom holds 50 students, how
many classrooms are needed at Highline College. This is an Order of operation question btw
The length of a rectangle is 6 ft longer than its width.
If the perimeter of the rectangle is 44 ft, find its area.
Answer:
112 ft square
Step-by-step explanation:
Perimeter=2l+2w
l=w+6
Perimeter=2(w+6)+2w
44=2w+12+2w
44=4w+12
32=4w
8=w
l=8+6
l=14
area=lw
area=14x8
area=112 ft square
What is the absolute value of the number indicated on the number line below?
A. -2 2/3
B. 2 2/3
C. -2 1/2
D. 2 1/2
Answer:
D, because in between -3 and -2 is -2 1/2, and absolute values are not negative, so the answer is 2 1/2, or D
Answer:
C.
Step-by-step explanation:
Determine whether each equation represents
proportional relationship. If it does, identify the
constant of proportionality.
a. y = 0.5x - 2
b. y = 1,000x
c. y=x+1
Answer:
b) y = 1,000x
If this incorrect sorry
Is the point (16,20) on line ℓ?
Answer:
YES
Step-by-step explanation:
Find the equation of the line written as, y = kx. The graph shows a proportional relationship between y and x.
Constant of proportionality/unit rate/slope (k) = rise/run = ⁵/4.
Substitute ⁵/4 in y = kx
We would have:
y = ⁵/4x.
Using the equation of the line, we can know if a given point is on the line by plugging the value of x and y coordinates of the point into the equation. If it makes the equation true, then it is a point on the line. If it doesn't make the equation true, then it isn't a point on the line.
Let's plug in (16, 20) into y = ⁵/4x.
Thus substitute x = 16 and y = 20, we have:
[tex] 20 = \frac{5}{4}(16) [/trex]
[tex] 20 = (5)(4) [/trex]
[tex] 20 = 20 [/trex]
It makes the equation true. Therefore, the point, (16, 20) is a point on line l.
You and a friend take pictures at a motocross event. Your camera can take 24 pictures in 3.75 seconds. Your friend's camera can take 36 pictures in 4.5 seconds. Evaluate the expression (36 divided by 4.5)/(24 divided by 3.75) to find out how many times faster your friend's camera is than your camera. GIVING BRAINLIST!
Answer:
bro
Step-by-step explanation:
bro i have no idea
