System of equations!!!
Answer:
Step-by-step explanation:
1. x^2-x-20=3x-15
x=5, x=1 substitute
y=3*5-15 = 0
y=3*(-1)-15 = -18
Solution: (5,0) & (-1,-18)
2. x^2+2x+3=x+5
x=-2, x=1 substitute
y= -2+5 = 3
y=1+5 = 6
Solution: (-2,3) & (1,6)
PLEEEEEEEEEEZ HELP ME!!!.
A company has to buy computers and printers. Each computer, x, costs $525 and each printer, y, costs $315. If the company spends $7,770 and buys a total of 20 machines, how many of each did it buy?
Enter a system of equations to represent the situation, then solve the system.
The system of equations is ___ and ___ .
The company bought ___ computers and ___ printers.
pleas help I'm failing math and this quiz is due tomorrow
Answer:
The company bought 7computers and 13 Printers.
Step-by-step explanation:
Just plug in the numbers so you know I'm right. I don't know how to explain it just do it. Sorry
James paid an initial fee of $6.00 for a movie rental service. Each time he rents a movie he is charged $2.00. Sarah uses a different movie
rental service that charges based on the equation y = 3x + 4, where y is the total cost and x is the number of movies rented. At what point
are the prices of the two services the same?
606
Answer:
We have system of equations
James's total cost: Y = 2x + 6 (1)
Sarah's total cost: Y = 3x + 4 (2)
replace y = 2x + 6 and (2) => 2x + 6 = 3x + 4 => x = 2 => y = 10
So the total cost of renting movies by James And Sarah is equal
Step-by-step explanation:
19% of £394.22. Give your answer rounded to 2 DP.
Someone please quickly respond back! Thanks.
Answer:
3
Step-by-step explanation:
if you round it by the nearest 2 you get 3
Mitch puts $500.00 into an account to use for school expenses. The account earns 12% interest,
compounded annually. How much will be in the account after 8 years? Round your answer to
the nearest cent.
pls hurry it’s for a math test
Answer:
there will be 20 dollars
Step-by-step explanation:
500 multiplied by .12 and then timesed by 8 then subtracted by 500
What is the eqution of the following line?
y=4x−1
y=4x+4
y=−4x+4
y=−4x−1
HUrRiCAn KatrINa?? MORe liKE?
Answer:
Step-by-step explanation:
HUrRiCAn PepiNa
Linear Equations Digital Escape! Can you find the slope-intercept equation of each line and type the correct code?
Answer: I can if there’s a picture...
Step-by-step explanation:
Answer: cgia
Step-by-step explanation:
The Sugar Sweet Company is going to transport its sugar to market. It will cost $3500 to rent trucks plus $250 for each ton of sugar
transported. The total cost, C (in dollars), for transporting n tons is given by the following.
C = 3500+ 250n
What is the total cost of transporting 15 tons?
In the total cost is $8750, how many tons is the company transporting?
Answer: Equation relating C to S :
The total cost to transport 19 tons of sugar is $11, 250.
Step-by-step explanation:
Given : It will cost $6500 to rent trucks, and it will cost an additional $250 for each ton of sugar transported.
Total cost = $6500 + $250 x (amount of sugar transported ( in tons))
Let C represent the total cost (in dollars), and let S represent the amount of sugar (in tons) transported.
Then, the equation relating C to S would be :
When S= 19 , we get
Hence, the total cost to transport 19 tons of sugar would be $11, 250.
Find the slope between the points (2,9) and (3,1) *
Please I need help immediately
Answer:
1
Step-by-step explanation:
Distance between x's (Δx)
0
This field is calculated automatically, you cannot change it's value manually.
Distance between y's (Δy)
1
d = √(Δy2 + Δx2) = √(12 + 02) = √1 = 1
I NEED MEGA HELP WITH THIS QUESTION
Answer:
C. [tex]y = - \frac{1}{4} x - 2[/tex]
Step-by-step explanation:
To find slope using coordinates, use the formula above.
[tex](4, - 3) \: (0, - 2)→ \frac{ - 2 - ( - 3)}{0 - 4}→ \frac{ - 2 + 3}{ - 4} → - \frac{1}{4} [/tex]
Now, using the [tex]y = mx + b[/tex] formula, plug in [tex] - \frac{1}{4} [/tex] as [tex]m[/tex] (slope) and either coordinate as the [tex]x[/tex] and [tex]y[/tex] values. It looks like this:
[tex] - 3 = - \frac{1}{4}(4) + b[/tex]
To solve for [tex]b[/tex], continue to use PEMDAS.
[tex] - 3 = - \frac{1}{4}(4) + b→ - 3 = - 1 + b→ - 2 = b[/tex]
Now use [tex]m[/tex] and [tex]b[/tex] to solve for your equation:
[tex]y = - \frac{1}{4} x - 2[/tex]
The answer is C.
A line passes through the point (-8, – 4) and has a slope of 5/4 write an equation in point slope form
y=5/4x+6 is in slope intercept form I forgot how to do point slope
3.5x+2.5y=321
Pleeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeease help
Answer:
3.5x=-6y636477374747 88
-3x-y=9
y=-3x+9
(select the correct answer for the solution to the following system of equations)
A: (1,6)
B: (0,-9)
C: infinite solutions
D: no solution
Answer:
D: no solution
...because none of the answers work for both of the equations when you plug in the x and y values
Marie purchased a $49.00 gift for a baby shower. She uses a coupon that offer 20% off. how much will Marie SAVE on the gift card after the coupon
Answer: $39.2
Step-by-step explanation:
9.80 saved
Step-by-step explanation:
49.00 x .20 = 9.80
if you can please answer the first and other question bc i dont know if im right lol
Answer:
DB!
Step-by-step explanation:
Question 1: A rectangle's area is length x width. You add up all the portions for the full area.
Question 2: A rectangle's area is length x width. a is the width and the length is 2+3+4, so the area is a(2+3+4)
Hope I helped!
if line f passes through points (9 , 9) and (6 , 1) . Line g is perpendicular to line f. What is the slope of line g?
16. In order to get a thicker sauce, a restaurant owner combines a sauce that
is 70% tomato paste with the original sauce, which is 40% tomato paste.
How much of each should be used to make 5 L of the new 60% tomato
paste sauce?
hey can someone help:)?
A rectangular poster is 2/3 meter long and 1/2 meter wide. What is the area of the poster in fraction form
Answer:
1/3
Step-by-step explanation:
Cameron is 5 ft tall and casts a 12 ft shadow. At the same time of day, a nearby
building casts a 78 ft shadow. How tall is the building? Hint: Make a sketch and label all
measurements first.
Answer:
the building would be 32.5 feet tall.
Step-by-step explanation:
help Find value of ST, Geometry problem
Answer:
It would be 13.
Step-by-step explanation:
Is this a function?
need the answer asap pls
Answer:
C. {-9,-3}
Step-by-step explanation:
[tex]|k+6|=3[/tex] gives [tex]k+6=3[/tex] if [tex]k + 6 \geq 0[/tex]. This gives [tex]k=-3[/tex], which is valid.
It can also give [tex]-(k+6) = 3[/tex] if [tex]k + 6 < 0[/tex]. This gives [tex]k=-9[/tex], which is valid.
Hence the solutions are [tex]k=-9 \vee k=-3[/tex].
Imagine making slices through the solid parallel to the bases. What two-dimensional shapes are formed
Answer:
shape as that of the base of the solid
Step-by-step explanation:
A solid has a three dimensional shape. A three dimensional shape has both length, breadth and height. If the solid is being cut parallel to the base, a two dimensional shape (has length and width) is formed.
The shape of the two dimensional shape is the same as the shape of the base. Hence if solid is cut parallel to the bases, the shape formed would have the same shape as that of the solid base.
Given f(x) = 2 sin x, find the exact value of f (7pi/6) in simplest form with a rational denominator.
Answer:
[tex]\bold{f(\frac{7\pi}6)=-1}[/tex]
Step-by-step explanation:
[tex]f(\frac{7\pi}6)=2\sin(\frac{7\pi}6)=2\sin(\frac{7\pi}6)=2\sin(\pi+\frac{\pi}6)=-2\sin(\frac{\pi}6)=-2\cdot\frac12=-1[/tex]
In the figure, name the intersection of lines m and n.
B
m
H
K
j
DC
B
K
A
100 POINTS AND BRAINLIEST
What is the rule for the function that is graphed?
y = 2 x + 2
y = 3 x + 2
y = 2 x
y = x – 2
Answer:
Y=2x+2
and tbh it's simple for most people
Step-by-step explanation:
Hope it helps
Answer:
y = 2 x + 2
Step-by-step explanation:
I did the assignment, so I hope it helps (A like helps me if you have time)
Find f (-12) if f (x) = -12x + 100
f(-12) = -12(-12) + 100 = 144 + 100 = 244
Answer:
244
Step-by-step explanation:
Substitute -12 as x.
f (-12) = -12(-12) + 100
f (-12) = 144 + 100
f (-12) = 244
I hope this helped! :)
DO ALL FOR A BRAINLIST AND A THANKS <333 pls help
Answer:
1. 11/12
2. 1/2
3. 2/3
4. 3/4
5. 1
6. 4/5
7. 9/10
8. 3/5
Step-by-step explanation:
1. 11/12
2. 5/10= 1/2
3. 4/6=2/3
4. 6/8=3/4
5. 3/3=1
6. 4/5
7. 9/10
8. 3/5
Answer:
1. 11/12
2. 3/3
3. 1/2
4. 4/5
5. 2/3
6. 9/10
7. 3/4
8. 3/5
Step-by-step explanation:
since the denominators are the same, you just add the top numbers together. in order to simplify, you find the greatest common factor for both the top and the bottom number.