The right answer is Option A.
Step-by-step explanation:
Let,
x be the postcards
y be the large envelops
According to given statement;
14x+5y=12 Eqn 1
10x+15y=24.80 Eqn 2
Multiplying Eqn 1 by 3;
[tex]3(14x+5y=12)\\42x+15y=36\ \ \ Eqn \ 3[/tex]
Subtracting Eqn 2 from Eqn 3;
[tex](42x+15y)-(10x+15y)=36-24.80\\42x+15y-10x-15y=11.20\\32x=11.20\\[/tex]
Dividing both sides by 32
[tex]\frac{32x}{32}=\frac{11.20}{32}\\x=0.35[/tex]
Putting x=0.35 in Eqn 1;
[tex]14(0.35)+5y=12\\4.90+5y=12\\5y=12-4.90\\5y=7.10[/tex]
Dividing both sides by 5
[tex]\frac{5y}{5}=\frac{7.10}{5}\\y=1.42[/tex]
Therefore, one large envelope costs $1.42
The right answer is Option A.
Keywords: linear equations, subtraction
Learn more about linear equations at:
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Answer: A. $1.42
Step-by-step explanation: I did it on the test and got it right!
Solve for w.
3w=84
Simplify your answer as much as possible.
w = 1
We can't really use w = 1 in this equation because it would be a false equation.
3w = 84
3(1) = 84
3 ≠ 84
If we were to solve for w then we can divide 3 to both sides.
3w = 84
3w/3 = 84/3
w = 28
______
Best Regards,
Wolfyy :)
Hey there!
3w = 84
DIVIDE 3 to BOTH SIDES
3w/3 = 84/3
CANCEL out: 3/3 because it give you 1
KEEP: 84/3 because it give you the w-value
NEW EQUATION: w = 84/3
SIMPLIFY IT!
w = 28
Therefore, your answer is: w = 28
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
Question 1) Refer to the equation 2x-6y=12. A) Create a table of values for at least 4 points. Show your work. B) Use the table of values to graph the line. ( Question 2) I posted a picture of question 2. Will Mark Brainliest. Has to be turned in tonight
Answer:
Question 1)
Rearrange 2x-6y=12 to slope-intercept form by isolating y
y = (1/3)x - 2
Sub each x value to get the y value
x y
-3 -3
0 -2
3 1
6 0
y = (1/3)x - 2
y = (1/3)(-3) - 2
y = -3
Point (-3, -3)
y = (1/3)x - 2
y = (1/3)(0) - 2
y = -2
Point (0, -2)
y = (1/3)x - 2
y = (1/3)(3) - 2
y = 1
Point (3, 1)
y = (1/3)x - 2
y = (1/3)(6) - 2
y = 0
Point (6, 0)
See graph below
Question 2)
a) No, each support does not have the same starting coordinates. For example, the first support from the left starts at (0,0) and the second support from the left starts at (2,1).
b) No, each support does not have the same ending coordinates. For example, the first support from the left ends at (2,1) and the second support from the left ends at (6,3).
c) No, each support does not have the same change in x-values from the start to end.
The first support starts at the x-value 0 and ends at the x-value 2. It increased by 2.
The second support starts at the x-value 2 and ends at the x-value 6. It increased by 4.
d) No, each support does not have the same change in y-values from the start to end.
The first support starts at the y-value 0 and ends at the x-value 1. It increased by 1.
The second support starts at the y-value 1 and ends at the x-value 3. It increased by 2.
e) Yes, each support has the same change in the ratio of y-values over x-values. For the first support, the change is y-values is 1 and the change in x-values is 2. (1/2)
For the second support, the change in y-values is 2 and the change in x-values is 4. (2/4 = 1/2)
They both have the ratio of change in y-values over x-values 1/2.
A groundskeeper needs grass seed to cover a circular field 290 feet in diameter
A store sells 50 pins bags of grass seed. One pound of grass seed covers about 400 square feet of field.
What is the smallest number of bags the groundskeeper must buy to cover the circular field?
Answer:
165
Step-by-step explanation:
First we need to find the area of the field, A = r^2 * pi
The radius is 290 / 2 = 145 feet
A = 145 * 145 * 3.14 = 66018.5 sqr feet
One bag covers 400 sqr feet
Divide the Area by 400 sqr feet to find number of bags needed.
66018.5 / 400 = 165
He will need at least 165 bags to cover the field
Answer:
4 bags
Step-by-step explanation:
We need to find the area of the circular field. To do this, we use the formula
A=piR^2 (pi multiplied by radius squared)
The radius is going to be 290/2 which is 145 which we plug into the equation.
A=pi145^2
The next step is to square 145, getting 21025. But now we need to multiply that by pi (3.14). We get 66018.5 as the answer.
Now we need to figure out how many square feet one bag can cover. To do this, we multiply 400 by 50 (because one pound can cover 400ft and one bag has 50 pounds). We get 20000 as the amount one bag of grass seed can cover. Now we need to divide 66018.5 by 20000. We get 3.300925. But the groundskeeper can't buy a decimal of a bag so we have to round up to 4 bags of grass seed.
the ratio of cats to dogs at an animal shelter is 5:2. currently there is 63 cats and dogs are up for adoption. how many cats are up for adoption
Answer:
45 cats 18 dogs
Step-by-step explanation:
63/7 = 9
9*5=45
9*2=18
45+18=63
The number of cats up for adoption is 45.
Given that, the ratio of cats to dogs=5:2.
The total number of cats and dogs up for adoption is 63.
What are ratios?In mathematics, a ratio indicates how many times one number contains another.
Now, 5+2=7
Number of cats=5/7×63=45
Therefore, the number of cats up for adoption is 45.
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Harper works at an electronics store as a salesperson. Harper earns a 6% commission on the total dollar amount of all phone sales she makes, and earns a 5% commission on all computer sales. Harper made a total of $2600 in sales and earned $137 in commission. Write a system of equations that could be used to determine the dollar amount of phone sales Harper made and the dollar amount of computer sales she made. Define the variables that you use to write the system.
Answer:
The system of equations are
x + y = 2600 …….equation (1)
and, 6x + 5y = 13700 ……equation (2)
Explanation:
Let x = amount of sales of phone;
y = amount of sales of computer
For phone, 6% of sales is 6% of x, or 6% * x = 0.06x.
Similarly for computer,
5% of y = 0.05y
Given the total sales; x + y = 2600
And commission; 0.06x + 0.05y = 137; or 6x + 5y = 13700
Therefore the system of equations are
x + y = 2600 …….equation (1)
6 x + 5 y = 13700 ……equation (2)
Lance and Mary are buying a piece of property. The property cost $64,975. The bank is requiring a 20% down payment. About how much money will they need for a down payment?
Lance and Mary will need approximately $12,995 for a down payment on the property.
Explanation:To calculate the amount of money needed for a down payment, you need to find 20% of the property cost. In this case, the property cost is $64,975.
Step 1: Convert 20% to a decimal by dividing it by 100: 20/100 = 0.2
Step 2: Multiply the property cost by 0.2: $64,975 * 0.2 = $12,995
Therefore, Lance and Mary will need approximately $12,995 for a down payment on the property.
2/3y+1=1/6y+8 equals what
The cost function for a company is C(x) = 90x + 1,800, where x is the number of bicycles produced at a cost of $90 each. How many bicycles can be produced for $3,780?
Answer:
22
Step-by-step explanation:
If the total cost of production can be explained with the function [tex]C(X)=1.800+90X[/tex], then when this total cost equals $3.780, we know that [tex]3.780=1.800+90X[/tex].Subtracting 1.800 both sides of the equation yields [tex]1.980=90X[/tex].Finally, dividing both sides by 90 gives us the value of X=22.Then, with $3780 we can produce 22 bicycles.A box of cereal has a net weight of 42 ounces. If you buy three of these boxes, how much cereal will you have?
Answer:
126 ounces of cereal
Step-by-step explanation:
42*3=126
Answer:
7 lb and 14 oz
Step-by-step explanation:
42 oz × 3 = 126 oz
126 oz = 7 lb and 14 oz
Can someone help me with this problem? It’s Special Right Triangles: Decimal Answer. Round to the nearest tenth. Thank you ! 10 points
Answer:
h = 1.4
c = 2.8
Step-by-step explanation:
For each problem, remember the special triangle side ratios then use a proportion. To solve, isolate the variable.
For the triangle with the variable h:
Since two of the angles are 45, this is an isosceles triangle. All isosceles triangles have two equal sides that are not the hypotenuse.
In a right isosceles triangle, the ratio for regular side to hypotenuse is 1 to √2.
[tex]\frac{1}{\sqrt2} =\frac{h}{2} \\h = 2\frac{1}{\sqrt2} \\h = \frac{2}{\sqrt2} \\h = \frac{2\sqrt2}{2} \\h = \sqrt{2}[/tex]
h = √2
h ≈ 1.4
For the triangle with the variable c:
The is an equilateral triangle cut in half because the angles are 30 and 60.
The side ratio of altitude to hypotenuse is √3 to 2.
[tex]\frac{\sqrt{3} }{2} =\frac{c}{4} \\\sqrt{3} = \frac{c}{2}\\2\sqrt3 = c[/tex]
c = 2√2
c ≈ 2.8
A flock of 20 seagulls merges with a flock of cardinals. The new flock is bigger than either of the original ones, but still, it is no larger than 100 birds. How many birds were in the flock of cardinals?
There are 80 birds in the flock of cardinals.
Solution:Given:- A flock of 20 seagulls or we can say
Number of seagulls in a flock = 20
The new flock is no larger than 100 birds
So, let Total number of birds of new flock = 100
To find out the number of birds in cardinals we have to subtract number of seagull in flock from total number of birds of new flock.
Number of birds in cardinal = Total number of birds of new flock - Number of seagulls in a flock
Number of birds in cardinal = 100 – 20 =80
Hence there are 80 birds in the flock of cardinals.
The answer explains how to determine the number of birds in the flock of cardinals based on the given conditions.
The number of birds in the flock of cardinals can be calculated as follows:
Let x be the number of birds in the flock of cardinals.
Since the new flock is no larger than 100 birds, the total number of birds after merging is 20 (seagulls) + x (cardinals).
Therefore, the equation to represent this situation is x + 20 ≤ 100, and solving for x, we get x ≤ 80. Thus, there were at most 80 birds in the flock of cardinals.
I need help solving this
Answer:
Area = 374.1 sq. in.
Step-by-step explanation:
A trick to solve this would be to know the area of a hexagon formula and plug the known information.
First, of all, if we count the number of sides, we see that we have 6 sides.
6 sided polygon is a HEXAGON, which has area formula of:
[tex]A=\frac{3\sqrt{3} }{2} a^2[/tex]
Where
a is the side length
Given, the side length is 12 inches ( a= 12), we simply substitute into formula and find area of hexagon shown:
[tex]A=\frac{3\sqrt{3} }{2} a^2\\A=\frac{3\sqrt{3} }{2} (12)^2\\A=\frac{3\sqrt{3} }{2}(144)\\A = 374.12[/tex]
Rounded to nearest tenth (1 decimal place)
Area = 374.1 sq. in.
EXPERT ANSWER,WILL GIVE BRAINLEST
Answer:
yes you can look below for details
Step-by-step explanation:
one reason is because opposite sides are congruent, which means that it is a parallelogram.
another way is to see if the two triangles created by an diagonal is congruent:
construct AC to get two triangles ABC and ADC
AC =CA because of reflection
BA=DC because its given
BC=DA because its also Given
so
triangle ABC= triangle CDA because of SSS(side side side)
Brandi jogged 2 1\2 miles in 30 minutes. Sharma jogged 3 1\2 miles in 3\4 hour. who jogged at slower rate
Answer:
The speed of Sharma is slower than the speed of Brandi
I.e ∵ 4.67 miles per hour [tex]<[/tex] 5 miles per hour
∴ [tex]S_2[/tex] [tex]<[/tex] [tex]S_1[/tex]
Step-by-step explanation:
Given as :
The distance cover by Brandi = [tex]D_1[/tex] = 2 [tex]\frac{1}{2}[/tex] =[tex]\frac{5}{2}[/tex]
The Time taken by Brandi for jogging = [tex]T_1[/tex] = 30 minutes =[tex]\frac{1}{2}[/tex] hour
Let the speed of Brandi = [tex]S_1[/tex] = [tex]\dfrac{\textrm Distance }{\textrm Time}[/tex]
or, [tex]S_1[/tex] = [tex]\dfrac{\textrm [tex]D_1[/tex] }{\textrm [tex]T_1[/tex] }[/tex]
Or. [tex]S_1[/tex] = [tex]\frac{\frac{5}{2}}{\frac{1}{2}}[/tex]
∴ [tex]S_1[/tex] = 5 miles per hour
Again
The distance cover by Sharma = [tex]D_2[/tex] = 3 [tex]\frac{1}{2}[/tex] =[tex]\frac{7}{2}[/tex]
The Time taken by Sharma for jogging = [tex]T_2[/tex] = [tex]\frac{3}{4}[/tex] hour
Let the speed of Sharma = [tex]S_2[/tex] = [tex]\dfrac{\textrm Distance }{\textrm Time}[/tex]
or, [tex]S_2[/tex] = [tex]\dfrac{\textrm [tex]D_2[/tex] }{\textrm [tex]T_2[/tex] }[/tex]
Or. [tex]S_2[/tex] = [tex]\frac{\frac{7}{2}}{\frac{3}{4}}[/tex]
∴ [tex]S_2[/tex] = [tex]\frac{14}{3}[/tex] = 4.67 miles per hour
Now, ∵ 4.67 miles per hour [tex]<[/tex] 5 miles per hour
∴ [tex]S_2[/tex] [tex]<[/tex] [tex]S_1[/tex]
So, Sharma jogged at slower late
Hence The speed of Sharma is slower than the speed of Brandi Answer
y = x - 4
-2x + y = 18
Use elimination pls
Answer:
x = -22 , y = -26
Step-by-step explanation:
Solve the following system:
{y = x - 4 | (equation 1)
y - 2 x = 18 | (equation 2)
Express the system in standard form:
{-x + y = -4 | (equation 1)
-(2 x) + y = 18 | (equation 2)
Swap equation 1 with equation 2:
{-(2 x) + y = 18 | (equation 1)
-x + y = -4 | (equation 2)
Subtract 1/2 × (equation 1) from equation 2:
{-(2 x) + y = 18 | (equation 1)
0 x+y/2 = -13 | (equation 2)
Multiply equation 2 by 2:
{-(2 x) + y = 18 | (equation 1)
0 x+y = -26 | (equation 2)
Subtract equation 2 from equation 1:
{-(2 x)+0 y = 44 | (equation 1)
0 x+y = -26 | (equation 2)
Divide equation 1 by -2:
{x+0 y = -22 | (equation 1)
0 x+y = -26 | (equation 2)
Collect results:
Answer: {x = -22 , y = -26
Answer:
x = -22, y = -26Step-by-step explanation:
[tex]\left\{\begin{array}{ccc}y=x-4&\text{subtract}\ x\ \text{from both sides}\\-2x+y=18\end{array}\right\\\\\left\{\begin{array}{ccc}-x+y=-4\\-2x+y=18&\text{change the signs}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}-x+y=-4\\2x-y=-18\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad x=-22\\\\\text{Put the value of}\ x\ \text{to the first equation:}\\\\y=-22-4\\y=-26[/tex]
The table below shows the numbers of tickets sold at a movie theater on Friday.
NUMBER OF TICKETS SOLD
Day
Adult Tickets
Children's
Tickets
1,678
976
Friday
Saturday
The number of each type of ticket sold on Saturday is described below.
• Adult tickets-2 times as many as the number of adult tickets sold
on Friday
• Children's tickets-3 times as many as the number of children's
tickets sold on Friday
Complete the table above to show the numbers of tickets sold on Saturday.
What is the total number of tickets sold over these two days?
Answer:
Number of Adult's tickets sold on Saturday = 3,356
Number of Children's tickets sold on Saturday = 2, 928
Total number of tickets sold over these two days is 8,938.
Step-by-step explanation:
Here, the number of tickets sold on FRIDAY:
Adult Ticket sold = 1,678
Children's Tickets sold = 976
So, the total number of tickets sold on Friday
= Sum of ( Adult + Children's ) tickets = 1,678 + 976 = 2,654 .... (1)
The number of tickets sold on SATURDAY:
Adult Ticket sold = 2 times the number of adult tickets sold on Friday
= 1,678 x 2 = 3,356
Children's Tickets sold = 3 times the number of children's tickets sold on Friday.
= 976 x 3 = 2, 928
So, the total number of tickets sold on Saturday
= Sum of ( Adult + Children's ) tickets = 3,356 + 2,928 = 6, 284 .... (2)
Now, the total number of tickets booked in these two days :
Sum of tickets booked on (Friday + Saturday)
= 2,654 + 6, 284 = 8,938
Hence, total number of tickets sold over these two days is 8,938.
Image point B'(4,-8) was transformed using the translation (x - 2, y + 3). What were the coordinates of B?
Answer:
B(6, - 11 )
Step-by-step explanation:
Since the translation rule is (x - 2, y + 3 )
Then to go back the way do the opposite, that is
(x + 2, y - 3 ), thus
B(4 + 2, - 8 - 3 ) → B(6, - 11 )
Answer:(6, -11)
Step-by-step explanation:
ALOT OF POINTS IF YOU HELP ME PLEASE EXPLAIN
Answer:
Helena gave the answer as (7y²z + 6yz²- 5 - 3yz² + 2) which is equivalent to (7y²z + 3yz² - 3).
Step-by-step explanation:
Misha's group was asked to write an expression equivalent to
7y²z + 3yz² - 3
When Mr. Chen checked their answers, he found only one to be correct.
And she was Helena.
Helena gave the answer as (7y²z + 6yz²- 5 - 3yz² + 2) which is equivalent to (7y²z + 3yz² - 3).
Because, (7y²z + 6yz²- 5 - 3yz² + 2)
= 7y²z + (6yz² - 3yz²) - (5 - 2)
= 7y²z + 3yz² - 3 (Answer)
240 grams of a 25% alcohol solution was mixed with 160 grams of a 40% alcohol solution. What is the percentage of alcohol in the new solution?
Answer:31%
Step-by-step explanation:look the pic
Answer:
31%
Step-by-step explanation:
A women bought some large frames for $16 each and some small frames for $9 each at a close out sale. If she bought 16 frames for $165, find how many of each type she bought.
Answer:
3 large, 13 small
Step-by-step explanation:
large: x
small: y
x + y = 16
16x + 9y = 165
Multiply first equation by 9 and subtract the equations.
9x + 9y = 144
-(16x + 9y = 165)
-7x = -21
x = 3
Now substitute this x value into the first equation
x + y = 16
3 + y = 16
y = 13
we need to solve for Y
xy=5
Answer:
y=5/x
Step-by-step explanation:
Just divide by x on both sides to isolate y
Answer:
=2.5
Step-by-step explanation:
If f(x)=2x^6+x^5+32x+32, is (x+2) a factor of f(x).
Answer:
No
Step-by-step explanation:
By the factor theorem if (x + 2) is a factor of f(x) then f(- 2) = 0
f(- 2)
= 2[tex](-2)^{6}[/tex] + [tex]-2)^{5}[/tex] + 32(- 2) + 32
= 2(64) - 32 - 64 + 32
= 128 - 32 - 64 + 32
= 64 ≠ 0
Hence (x + 2) is not a factor of f(x)
Answer: By the factor theorem if (x + 2) is a factor of f(x) then f(- 2) = 0
f(- 2)
= 2(-2)^{6} + -2)^{5} + 32(- 2) + 32
= 2(64) - 32 - 64 + 32
= 128 - 32 - 64 + 32
= 64 ≠ 0
Hence (x + 2) is not a factor of f(x)
Plz help i can't figure this out for the life of me and it's due tmr
Answer:
D
Step-by-step explanation:
The diagram shows the rectangle with vertices at A(3,4), B(3,7), C(4,7) and D(4,4).
1. Rotate rectangle ABCD by 180° about the point (3,4) (vertex A). This rotation has the rule:
[tex](x,y)\rightarrow (6-x,8-y)[/tex]
So, the image points have the coordinates A'(3,4), B'(3,1), C'(2,1) and D'(2,4)
2. Dilate by a scale factor of 2 with the center of dilation at origin. This dilation has the rule:
[tex](x,y)\rightarrow (2x,2y)[/tex]
So, the image points have the coordinates A''(6,8), B''(6,2), C''(4,2) and D''(4,8)
3. Reflect it over the y-axis. This reflection has the rule:
[tex](x,y)\rightarrow (-x,y)[/tex]
So, the image points have the coordinates A'''(-6,8), B'''(-6,2), C'''(-4,2) and D'''(-4,8) that are exactly the coordinates of the second rectangle shown.
Thus, correct option is option D.
Name two pairs of congruent angles in the figure. Justify the answer.
Answer:
A and D
Step-by-step explanation:
Statement (A) and statement (D) are the two pairs of congruent angles in the figure.
What is the congruent figures?Congruent figures are those that are exactly the same size and shape. Congruent is represented by the symbol ≅ When the three sides and three angles of one triangle match the dimensions of the three sides and three angles of another triangle, they are said to be congruent.
It is given that:
The angles are shown in the picture.
It is required to name the two pairs of congruent angles in the figure.
From the figures:
According to the right angles congruent theorem, angle DIB and angle CIA
The right angles congruent theorem states that angle BIA and angle CIB are congruent.
Angle DIB and angle CIA according to the right angles congruent theorem
Angle BIA and angle CIB according to the right angles congruent theorem
Thus, statement (A) and statement (D) are the two pairs of congruent angles in the figure.
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A rubber of length 89m is cut into 3 equal pieces. What is the length of each piece.
a) 8 /3. b)24/9
c)4 1/9 d) 8/27
Answer: i dont see the answer listed. The answer is 29 ²/₃m
Step-by-step explanation:
89m long piece of rubber is cut into 3 pieces. In other words, divided into 3 pieces.
89m ÷ 3 = 29.66666666m
Which concerts to 29²/₃m
A taxi charges a base fee plus $0.75/km.
A 10-km trip costs $8.70.
a) What is the rate of change in this situation?
b) Write an equation for the cost of hiring a taxi in terms of length of the trip.
c) What does initial value represent in this situation.
a) The rate of change in this situation is 0.75 dollars/km
b) The equation for the cost of hiring a taxi in terms of length of the
trip is y = 0.75 x + b
c) The initial value represents in this situation is $1.2
Step-by-step explanation:
The given is:
A taxi charges a base fee plus $0.75/km.A 10-km trip costs $8.70∵ A rate of change is a rate that describes how one quantity
changes in relation to another quantity
∵ The unit cost of a taxi is 0.75 dollars for each 1 kilometer
∴ The rate of change = 0.75 dollars/km
a) The rate of change in this situation is 0.75 dollars/km
Assume that the cost of hiring a taxi is $y for length of a trip x km
and a base fee of $b
∵ The length of the trip = x km
∵ The cost per km = $0.75
∵ The base fee = $b
∵ The cost of hiring a taxi = $y
- Write an equation for the the cost of hiring a taxi
∴ y = 0.75 x + b
b) The equation for the cost of hiring a taxi in terms of length
of the trip is y = 0.75 x + b
∵ The length of the trip is 10 km
∴ x = 10
∵ The cost of the hiring a taxi is $8.70
∴ y = 8.70
- Substitute these values in the equation of part (b)
∵ y = 0.75 x + b
∴ 8.70 = 0.75(10) + b
∴ 8.70 = 7.5 + b
- Subtract 7.5 from both sides
∴ 1.2 = b
∵ b is the base fee
∴ b is the initial value
∴ The initial value = $1.2
c) The initial value represents in this situation is $1.2
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Answer:
a) $0.75/Km
b) [tex]F(x)=1.2+0.75x[/tex]
c) The fixed base charge
Step-by-step explanation:
We know the taxi charges $0.75 per km and we are told a 10-Km trip costs $8.70. We can clearly see there is a base charge and a variable charge
a) The rate of change tells us the variation of the charges with the distance of the trip. In this case, the rate of change is $0.75/Km
b) If x is the length of the trip in Km, the equation of the total fare F(x) is
[tex]F(x)=A+0.75x[/tex]
We know a 10-Km trip costs $8.70. Replacing those values would give us the value of A
8.70=A+0.75(10)
8.70=A+7.5
[tex]=> A=8.70-7.5= 1.2[/tex]
Using the value of A we have
[tex]\boxed{F(x)=1.2+0.75x}[/tex]
c) The initial value represents the charge a customer has to pay even if they don't travel any distance, i.e. the fixed base charge
you begin with $90 in your savings account and your friend begins
with $35 in her savings account. You deposit $10 in savings each
week, and your friend deposits $15 in savings each week.
a. Write and graph a system of linear equations that
represent the amounts in each of your savings
accounts
b. Your friend says that in 10 weeks you will both
have the same amount of money in your savings
accounts. Is your friend correct? Use the graph
from part (a) to explain your answer.
Answer:
F(f) = 15t + 35 represents the total amount of savings your friend would make in t weeks.
F(d) = 10t + 90 represents the total amount of saving you, darian, would make in t weeks.
When you graph the equations, plugging in different values for t, you can see that the graphs intersect at (11,200). This means that at 11 weeks, both you and your friend have the same amount of money saved up, $200. They will not have the same amount of money in 10 weeks.
Answer:
a. [tex]y=10x+90[/tex][tex]y=15x+35[/tex]
b. Your friend is wrong.Step-by-step explanation:
If you begin with $90 and add $10 each week, then we express it as
[tex]y=10x+90[/tex]
Where [tex]x[/tex] refers to weeks and [tex]y[/tex] refers to the total amount of money in you savings account.
On the other hand, your friend begins with $35 and deposits $15 each week, the equation that expresses your friend's savings is
[tex]y=15x+35[/tex]
Therefore, the sytem of linear equation that models this situation is
[tex]y=10x+90[/tex]
[tex]y=15x+35[/tex]
The graph attached shows this system. There you can notice that the solution is (11, 200), which means in 11 weeks both will have the same amount saved.
Therefore, your friend is wrong, because after 10 weeks you won't have the same amount.
Which situation has a unit rate of $7?
A
Trevor spent $49 on 2 theater tickets.
B
Sally bought a pack of 5 t-shirts for $35.
C
Brandon bought 7 gallons of gas for $14.
D
Gina bought nail polish for $5 and a pack of gum for $2.
Answer:
C is the answer.
Step-by-step explanation:
3) There are 60 total students in two of Mr. Weber's classes. 80% of them say he is
their favorite teacher. How many students think he is their favorite teacher?
Answer:
48 will be the answer.
Step-by-step explanation:
we can simply find the 80 percent of 60.
80 * 60 / 100 = 4800/100 = 48.
so 48 students think he is their favorite teacher.
all real numbers y that are less than 4 or greater than 9
Answer:
Y<4 or y>9
Hope this helps you out!