How many solutions does the system have?
y = 5x+1
y = -2x-8
Choose 1 answer:
A. Exactly one solution
B. No solutions
C. Infinitely many solutions
Answers
Answer:
x= -9/7
y= -38/7
so it has A. exactly one solution
Step-by-step explanation:
Substitute into one of the equations: 5x+1= -2x-8
Rearrange unknown terms to the left side of the equation: 5x+2x=-8-1
Combine like terms:7x=-8-1
Calculate the sum or difference: 8x=-9
Divide both sides of the equation by the coefficient of variable: x=-9/7
Substitute into one of the equations:y=-2×(-9/7)-8
Write as a single fraction:y=2×9/7-8
Calculate the product or quotient:y=18/7 -8
Convert the expression into a fraction: y=18/7 -8/1
Expand the fraction to get the least common demominator:y=18/7-8x7/1x7
Calculate the product or quotient: y=18/7-56/7
Write the numerators over common denominator:y=18-56/7
Calculate the sum or difference: y=-38/7
Rewrite the fraction: y= -38/7
The solution of the system is:
x= -9/7
y= -38/7
Related Questions
A 12ft. ladder is leaned against a wall. If the base of the ladder is 5ft. from the wall, how high up on the wall does the ladder reach?
Answers
Answer:
use Pythagoras theorem
[tex] {a}^{2} + {b}^{2} = {c}^{2} \\ \\ a = 5 \\ b = (required \: lenth) \\ c = 12 \\ \\ { {5}^{2} } + {b}^{2} = {12}^{2} \\ {b}^{2} = {12}^{2} - {5}^{2} \\ b = \sqrt{119} \\ b = 10.90871211[/tex]
x^2 + 5^2 = 12^2
x^2 +25 = 144
x^2 = 119
x = √199 or 10.9087121146
Answer Please!!!!!!!!!!!!!!!!1
Answers
Answer:
Step-by-step explanation:
1. The information in the question explains that the groups are listed alphabetically and that four groups remain (A,B,C,D).
2. You can look at all four groups as being equal to 100% and each individual group as 25% of the total 100%. (The same concept as four quarters being equal to one dollar).
3. Because there are four groups left to present and any of the four can be selected at random this means that the answer is option D. Group A, Group B, Group C, Group D.
1. The information in the question
explains that the groups are listed
alphabetically and that four groups
remain (A,B,C,D).
2. You can look at all four groups as
being equal to 100% and each individual
group as 25% of the total 100%. (The
same concept as four quarters being
equal to one dollar).
3. Because there are four groups left to
present and any of the four can be
selected at random this means that the
answer is option D. Group A, Group B,
Group C, Group D.
eight times a number,decreased by 10 is equal to four times that same number, decreasing by 2. What is the number?
Answers
Answer:
see below
Step-by-step explanation:
8x-10=4x-2
subtract four
4x-10=2
add ten
4x=12
divide by four
x=3
Answer:
2
Step-by-step explanation:
Let’s write this as an equation.
(8*x)-10=4x-2
Now let us solve this:
1. 8x-10=4x-2
2.4x=8
3. x=2
can someone help me please
Answers
Select all of the expressions below that represent the additive inverse of 5/6
(Choose 2)
A. -(+5/6) B. -5/6 C. -(-5/6) D. 6/5
Answers
Marcy wants to know which type of book is most commonly checked out by visitors of her local public library. She surveys people in the children’s reading room between 1:00 and 2:00 on Saturday afternoon. Select all the statements about Marcy’s survey that are true.
1. Marcy’s sample is not representative because not all of the library’s visitors go to the children’s reading room.
2. Marcy’s sample is a representative sample of the population.
3. Marcy will get a random sample by surveying as many people in the children’s reading room as possible.
4. The population of Marcy’s study consists of all visitors of the public library.
5. The results of Marcy’s survey include a mode, but neither a mean nor a median.
Answers
Answer:
1
Step-by-step explanation:
enjoy write anything get points ill do more later
Answers
lolzzz...thx
hope you're doing good
hope it helps...!!!
Answer:
me! pls can i have brainliest answer pls i need brainly im trying to rank up!
thanks friend! :3
Step-by-step explanation:
Can someone please answer this and EXPLAIN how to solve it? ill mark brainliest.
Answers
Answer:
254.34 in^2
Step-by-step explanation:
Replace de values on the formula
[tex]a = \pi {r}^{2} \\ a = (3.14)(9)^{2} \\ a = 254.34[/tex]
PLEAS HELP ME OUT !!!!!!
Answers
I would be happy if someone helped me on this !
This is 6th grade math.
Thanks !
Answers
Answer:
the square pyramid has a base that is 4 units on each side. The height of each triangular face is 4 units.
Step-by-step explanation:
for the base count the boxes on one side. For the height count from the base of the pyramid to the point of the triangular faces.
Answer:
Blank 1: Four
Blank 2: Three
Step-by-step explanation:
You can solve both by looking at the graph, no formulas needed.
Blank 1: The base is the square in the middle (in this case). If you're ever unsure, the name of the shape usually names the base. It's called a "square pyramid" which means the base is square.
Now, we know it's just asking for how many units each side of the square is. Because this is a square, all sides are the same, so the amount of units is the same. If you count the units on one side, it's four.
Blank 2: The "triangular face" just means the triangle. The height of the triangle is found by counting the units of the tallest part. The tallest part is the middle. The middle is 3 units tall.
Hope this helped!
help asap, rlly need this
Answers
Answer:
the answer for this is toaintain
75 points and brainliest if im able to give it out.
Answers
Answer: The probability that at least 4 boys will find one that commutes to school with bicycle is 10% or 0.1 or 1/10
Given:
40% ride bicycle to school
4 boys have to pick 1
Step-by-step explanation:
40% ⇒ 40/100
[tex]\frac{percent}{boys} =probability[/tex] ⇒ [tex]\frac{40}{4}[/tex]
= 10 ⇒ 10% or 0.1 or 1/10
Answer this PLEASE!!!!
Answers
2. 60%
3. Less than
(Brainliest please)
Answer:
50% 60% less than
Step-by-step explanation:
your welcome
Fast brainley I give brainliest to correct answers only.
Answers
guyssssss helppppppppppppppppppppppppppppp
Answers
Answer:
ANSWER 1:- TO FIND THE AREA OF PARALLELOGRAM MULTIPLY THE BASE OF THE PERPENDICULAR OF ITS HEIGHT
14 × 16
224
please tell me what this is
Answers
Answer:7.2+z=10
Step-by-step explanation:if I am right you just have to do the equacion
question is in the picture below.
Answers
Answer:
0.2
Step-by-step explanation:
30/150 = 1/5 = 0.2
set as brainliest
y=4x+6
y−4x=−6
Which BEST describes the solution for the system of equations?
A
(0,6)
B
(0,−6)
C
No solution
D
Infinitely many solutions
Answers
At a football game, 12 people are wearing red jerseys and 15 people are wearing white jerseys. Write the ratio of red to white jerseys in three different ways.
Answers
Answer:
12:15 (simplified: 4:5)
12/15 (simplified: 4/5)
12 to 15 (simplified: 4 to 5)
Hope this helped!
12 to 15
12-15
All will simplify to 4:5
For every 4 red jerseys there are 5 white ones
( brainlies ) Can somebody help me with this?
Answers
Answer:
(a)
Area: 930 meters(m)
Perimeter: 122 meters(m)
(b)
Area: 616 centimeters(cm)
Perimeter: 116 centimeters(cm)
(c)
Area: 1008 millimeters(mm)
Perimeter: 128 millimeters(mm)
Explanation:
Area = length x width
Perimeter = length+width+length+width
Area for (a) is then 31 times 30 = 930
Area for (b) is then 44 times 14 = 616
Area for (c) is then 36 times 28 = 1008
Perimeter for (a) is 31+30+31+30=122
Perimeter for (b) is 44+14+44+14=116
Perimeter for (c) is 36+28+36+28=128
Answer:
P = 122 | A = 930P = 116 | A = 616P = 128 | A = 1008Solve(perimeter) ➕2 · (30 + 31) = 1222 · (14 + 44) = 1162 · (28 + 36) = 128[tex]\sf Formula[/tex]
P = 2 × ([tex]l[/tex] + [tex]w[/tex])
Solve(area) ❎31 · 30 = 93044 · 14 = 61636 · 28 = 1008[tex]\sf Formula[/tex]
A = [tex]w[/tex] × [tex]l[/tex]
Jenna wants to wrap a shipping box shaped like a rectangular prism. The box is 20 inches tall and has a square base with sides that each measure 3 inches. How much paper will she use?
Answers
Answer:
23 inches
Step-by-step explanation:
Explanation:
For this question, we are trying to find the surface area of the rectangular prism, not the area inside the rectangular prism because we are wrapping the box up.
So, If we break up the rectangular prism, we will get 4 rectangles that are 20 inches by 3 inches, and 2 squares (the base and the top) that are 3 inches by 3 inches.
What we have to do know is find the area of all these pieces, then add them together.
So for the 4 rectangles:
A = l x w
= 20 inches x 3 inches
= 60 inches
Since there’s 4 rectangles we do:
60 x 4 = 240 inches
For the 2 Squares:
A = l x w
= 3 inches x 3 inches
= 9 inches
since there’s 2 squares we do:
9 x 2 = 18 inches
Then we can add these totals up for the total surface area:
240 + 18 = 258 inches squared
Demos Assignment
Is It Fair?
Answers
Answer:
0.62 or 62%
Step-by-step explanation:
Please help! I keep on getting the wrong answer!
Answers
Answer:
A. 18.84
B. 28.26
C. 364.24
D. 120
E. 14
F. 21
G. 96
CODE: 1977.98
Step-by-step explanation:
a. C = 2πr
C = 2π(3)
C = 6π
C = 6(3.14)
C = 18.84
b. A = πr²
A = π(3)²
A = 9π
A = 9(3.14)
A = 28.26
c. C = 2π(58)
C = 116π
C = 116(3.14)
C = 364.24
d. 4x + 2x = 180
6x = 180
x = 30
4x = 4(30) = 120
e. 3x - 21 = x + 7
2x = 28
x = 14
f. angle JHK = 3x - 21 = 3(14) - 21 = 21
g. supplementary means 2 numbers add up to 180
180 - 84 = 96
CODE: E(C - D) - F(G - B) - A
14(364.24 - 120) - 21(96 - 28.26) - 18.84
= 14(244.24) - 21(67.74) - 18.84
= 3419.36 - 1422.54 - 18.84
= 1977.98
Even though we are all different in many ways, one thing that brings us together is ____________. emotion music art conversation
Answers
Answer:
Art
Step-by-step explanation:
just ask??
words problems involving length and money
Answers
Answer:
12
Step-by-step explanation:
Since 8 poster takes 48 inches of tape
48/8 = 6
each poster will take 6
if you have two posters
6x2=12
so 12
Answer:
12 pieces divide 48 by 8 getting 6 multiple that by two getting the answer
Step-by-step explanation:
What was the median number of items purchased? Show your work
Answers
Answer:
4
Step-by-step explanation:
Step 1: Arrange the numbers in ascending order
1,2,2,3,3,3,3,5,5,7,7,9,9,10
Step 2: Find the two middle numbers, m1 and m2
3, and 5
Step 3: Find the average of m1 and m2
(3+5)/2 = 4
(m1 + m2)/2. Where, m1 and m2 are the two middle numbers.
median is 4
the median number of the items purchased would be 4
REUPLOAD)
Please help with question 3. do not worry about question 2
Answers
Answer:
Lake A
Step-by-step explanation:
Lake A has values that are not as clustered together.
Asap pls
Nine cards have the letters A, B, C, or D as shown. One card is pulled randomly. Enter the probability of pulling a card with the letter A one the first pull.
Answers
What is the last step in constructing an angle?
Draw a horizontal ray.
Place the center of the protractor on the endpoint of the ray, and line up the ray with the zero line of the protractor.
Make a mark at the number of degrees you want the angle to be.
Connect the endpoint and the mark at the angle measure.
Answers
Answer:
Step-by-step explanation:
ceanter
Answer:
Connect the endpoint and the mark at the angle measure.
Step-by-step explanation:
. Connect the endpoint and the mark at the angle measure.
id love some help ive been stuck.
Answers
A=(b1+b2)•h/2
b1 is going to be 5 in
b2 is going to be 4 in
h is going to be 3in
Add 5+4 which is 9 times 3 which is 27
Now 27 divided by 2 is 13.5in
Therefore your answer is B