Answers
Answer:
x=2,y=7
Step-by-step explanation:
Using elimination method:
Add both equations
8x=16
x=2
Put x=2 into equation 2
3•2+6y=48
6y=42
y=7
Related Questions
Order of Operations - Use PEMDAS. Evaluate the expression. Show all work please!
18 - 2 (1 + 10 / 5)
Answers
Explanation:
18-2(1+10/5)
18-2(1+2)
18-2(3)
18-6
12
18-2(1+10/5)
First if all divisions
18-2(1+2)
Open bracket
18-2-4
18-6
12
12 final answer
Select all sets in which the number - 1/7
is an element.
A.
integers
B.
rational numbers
C.
whole numbers
D.
natural numbers
E.
irrational numbers
F.
real numbers
Answers
-1/7 belongs to B. Rational numbers and F. Real numbers.
What is a set ?A set is a collecting of well defined objects one form of writing a set is in roaster method where we write the elements with commas and close them with second brackets.
According to the given question we have to select all the sets in which the number - 1/7 is an element.
-1/7 is a rational number as it can be written in p/q form where q ≠ 0.
This also contain in the set of real numbers as in -1/7 there is no imaginary part.
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if a canoe travels with a speed of a mph for 3 hours, and then with a speed of b mph for the rest of the way, how long does it take to travel c miles?
Answers
Answer:
3+b=c
Step-by-step explanation:
Answer:
3+b=c
Step-by-step explanation:
plz help! will mar brainliest.
Answers
Answer:
From -2<x<-1, the function F(X) is increasing. (B)
Really, it increases all from around -2.5<x<0.5
C is also the second answer, as it increases til around 2.5
It is decreasing from -4<x<-3. But increases right after. It then starts to slow down around x = 1 and go down again.
Which means (B) is your answer.
If you want to get fancy, its a polynomial and if you take the derivative for instantaneous rate, you will see f prime is increasing if you make an example function.
Answer:
-2,5 < x < 1
is the simplified and truncated value
Step-by-step explanation:
Hey guys so I have a question. How do you determine the appropriate center of measure? I know that you have to find the mean median and mode but once you find the mean median and mode, how do you determine the center of measure? I'm confused.
Answers
Answer:
The two most widely used measures of the “center” of the data are the mean (average) and the median. To calculate the mean weight of 50 people, add the 50 weights together and divide by 50 . To find the median weight of the 50 people, order the data and find the number that splits the data into two equal parts.
help a girl out?
17 - 12m = -11(m-2)
Answers
Answer:
m= -5
Step-by-step explanation:
remove the parentheses
move the terms
collect light terms
calculate
change the signs
17-12m=-11m+22
17-12m+11m=22
-12m+11m=22-17
-m=22-17
-m=5
m=-5
answer pls its ixl yes
Answers
Answer:
90.5
Step-by-step explanation:
Diagonal length of the base = √(8²+8²) = 8√2
height = 8,
so area = 8√2 × 8 (since the diagonal and the height makes the rectangle JFHL
so, 8√2 × 8
= 64√2
= 90.5
Answered by GAUTHMATH
Which expression is equivalent to _?
Answers
Answer:
2^-1
Step-by-step explanation:
2^2 *2 / 2^4
We know that 2^2 * 2 = 2^2 *2^1
a^b*a*c = a^(b+c) so 2^2*2*1 = 2^(2+1)+ 2^3
2^3 / 2^4
We know that a^b / a^c = a^(b-c)
2^3 /2^4 = 2^(3-4) =2^-1
The equivalent of the given expression 2² × (2/2⁴) when simplified is; 2⁻¹
How to simplify exponents?We are given the exponents expression;
2² × (2/2⁴)
Let us first multiply out the numerator to get;
2² × 2 = 2³
Thus, our overall expression is;
2³/2⁴
According to laws of exponents;
a^(b)/a^(c) = a^(b-c)
Thus;
2³/2⁴ = 2³⁻⁴
⇒ 2⁻¹
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Rachel bought 2.5 pounds of cookies for $13.40. Her friend buys 4.5 pounds of crackers for $24.75. Which is less
expensive per pound? By how much? (HINT: Find the unit rate for each, then find the difference)
Answers
Last month David, a sales representative, sold $5000 worth of medicines and received a commission of 30% on his sales. How much money did David earn as commission last month?
A.$3,000
B.$2,000
C.$1,500
D.$1,000
Answers
Answer:
C.
Step-by-step explanation:
30% of 5,000 is 1,500.
solve by factoring
x^2-x -30=0
Answers
Step-by-step explanation:
use the formula if things get to difficult
Answer:x=6 x=-5
Step-by-step explanation:
SOLVE OR SIMPLIFY THIS!! 4(2x+7)=12-2(10-2x)
Answers
Answer:
-3
Step-by-step explanation:
8x+28=12-20-4x
8x+4x=-8-28
12x=-36
x=-3
PLS MARK AS BRAINLIEST
8x+28= 12-20+4x
simplify
8x+28=4x-8
subtract 4 and subtract 28 to get them on opposite sides
4x= -36
divide by 4
X= -9
Please help! Thank you! I will appreciate it!
Answers
Step by step on how to do this plz
Answers
Answer:
4xy exponent 7/2xy exponent 6
Answer:
Step-by-step explanation:
First expand the numerator by distributing in the 2 outside the parenthesis to get
[tex]\frac{16x^6y^4}{2x^6y}[/tex] and now, working on one thing at a time, we will divide:
16 x⁶ y⁴
2 x⁶ y
I separated each set of like expressions to make it easier to see. First divide the numbers, 16 by 2:
8 x⁶ y⁴
x⁶ y
the x's cancel out (divide to a 1):
8 y⁴
y
and by the rules for dividing like bases, we will subtract the exponents, lower from upper to get, finally:
8y³
A rectangular photograph measuring 2 inches by 4 inches is enlarged by a scale factor of 8. What are the new dimensions of the photograph? Can ya explain how you got the answer too?
Answers
Answer:
original: 2x4
scale factor: 8
new dimensions:
2x8=16
4x8=32
(To get the new dimensions all you have to do is multiply the sides by the scale factor)
Step-by-step explanation:
The new dimensions of the photograph is [tex]64 \ in^{2}[/tex]
What is a scale factor?The scale factor is a measure for similar figures, who look the same but have different scales or measures. Suppose, two circle looks similar but they could have varying radii. The scale factor states the scale by which a figure is bigger or smaller than the original figure.
According to the question
[tex]S_{1} =2\times4=8[/tex]
[tex]S_{2} =8S_{1} =8\times8=64[/tex]
The new dimensions of the photograph is [tex]64 \ in^{2}[/tex]
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please hlep me its ixl
Answers
Answer:
D
Step-by-step explanation:
D is the answer I did the math.
Hope this helps!
Answer:
d
Step-by-step explanation:
Solve for u, Simplify your answer as much as possible
52=5u-8
Answers
u = 12
Step-by-step explanation:
52 = 5u - 8
Step 1. Add 8 to both sides
60 = 5u
Step 2. Solve for u
5u = 60
u = 60/5
u = 12
Answer:
12 = u
Step-by-step explanation:
52=5u-8
Add 8 to each side
52+8=5u-8+8
60 = 5u
Divide each side by 5
60/5 = 5u/5
12 = u
6th grade Geometry, please help it's due soon!
Answers
Answer:
1. ABO, 2. OCD
Step-by-step explanation:
Since they have the same degrees of angles.
EX: <OA, <BO, <CO, <DO.
(IF I AM NOT RIGHT OR I AM LOSING THE DETAIL WANTED, PLEASE LIST OUT IN THE COMMENT BELOW THE ANSWER AND I WILL CHANGE IT.)
: ) Just to make it look bolder.
since they use the same angles they are congruent
:))
Jordan flipped a coin 218 times. Which of the following would be a good estimate of the number of times the coin landed on heads?
A. 168
B. 104
C. 209
D. 34
Answers
Ans: (1/2)218 = 109
----
Closest to that is 104
Answer:
B. 104
Step-by-step explanation:
It would make the most sense if it were somewhere in the middle since flipping a coin has a 50% chance of being heads.
B. 104 is closest to the absolute middle of 218, therefore, it would be the most accurate.
the product of 4 and y
Answers
Answer:
4y
Step-by-step explanation:
product means multiply
4y
Answer:
4y
Step-by-step explanation:
Write two equivalent ratios using four different types of music in the data table showing. How do you know the ratios are equivalent?
rock-12
classic rock-4
county-18
jazz-2
heavy metal-6
Answers
These are equivalent because in a way they equal each other with division
Please Help Will Give Points
Answers
Answer:
2
Step-by-step explanation:
The expression below shows how to convert 12 gallons to cups with one part missing
Which value completes the expression?
Answers
Hdjdjndjdndnndndndnndn
Answer:
c
Step-by-step explanation:
Kindly Please Help....
You will need to make make a frequency distribution table and represent it in a bar graph creatively. (5 different forests in India)
Answers
Answer:
1st- thorn forest - forest which have many thorns it is in rajasthan
2nd- evergreen forest - a forest whose trees are green in any season
3rd- Amazon forest - in Amazon forests there are many venomous/ poisonous amphibians and stuff like anacondas and wild animals.
Step-by-step explanation:
so sorry this is all i could find
An adult ticket is twice the cost of a child's ticket. Angela paid $ 28 for two adult tickets and three children's tickets. Which of the
following equations could be used to find the price of a child's ticket?
(A) x + 2x = 28
(B) 3x + 2(2x) = 28
(C)3(2x) + 2x = 28
(D) 3x + 2x = 28
Answers
The following equations could be used to find the price of a child's ticket, 3x + 2(2x) = 28, the correct option is B.
What is an Equation?An equation is a mathematical statement formed when two expressions are equated using an equal sign.
The equations are useful in determination of unknown parameters.
The equations are of various types, such as Trigonometric equations, quadratic equations.
The system of equations are used to solve complex problems.
Let the cost of child ticket is $x
An adult ticket is twice the cost of a child's ticket.
Let the cost of adult ticket is $2x
The total amount Angela paid is $28 for two adult tickets and three children's tickets.
The equation that will be formed is
4x + 3x = 28
It can also be written as 3x + 2(2x) = 28.
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What is the shape of the distribution shown below?
Choose 1 answer:
A) The distribution is symmetrical
B) The distribution is not symmetrical
[SCREENSHOT IS INCLUDED]
Answers
Answer:
The answer would be B if its reffering to the photo and A if its reffering to the scale.
Need Help ASAP!!!!!!!!!!!!!!!!
Answers
Y=3
Valeria bought a 9-foot length of ribbon from which she wants to cut 3-foot pieces. How many pieces can she cut? What will be the length of the leftover piece of ribbon?
help plz
Answers
Answer:
She can cut 3 pieces of ribbon.
None will be left over.
9/3 = 3 with no remainder/leftover
A bottle of hot sauce is 3/4
full. Leigh uses 2/9
of the remaining hot sauce for lunch. How much of a full bottle of hot sauce did Leigh use for lunch?
Answers
Answer: 1/6
Step-by-step explanation:
Step by step plz on how to do this
Answers
Answer:
x=3
Step-by-step explanation:
Step 1: you have to replace y with x-6 to make it all one equation (as seen in the picture below)
Step 2: write it all together so: x-6= -2x+3
Step 3: add 2x on both sides to cancel out the negative so: x+ 2x and -2x+2x
Step 4: add 6 on both sides to cancel out the negative so: -6+ 6 and 3+6
Step 5: divide 3 by 3x and 9 to get x
