I just need b please
please also explain, this is one of the last problems i need to do for this!
Answers
Answer:
[tex](\frac{3}{2} , -\frac{5}{4})[/tex]
Answer: They intersect at [tex](\frac{3}{2},-\frac{5}{4} )[/tex]
Step-by-step explanation:
x-2y = 4
7x + 2y = 8
We will solve the equations using the substitution method so we will solve for y in one of the equations and and substitute it into the other equation to solve for x.
x - 2y = 4
-x -x
-2y = 4 - 1x Divide both sides by -2
y = 1/2 x - 2 Now use substitution
7x + 2( 1/2x -2) = 8
7x + 1x - 4 = 8
8x -4 = 8
+4 +4
8x = 12
x = 12/8 and simplifies to 3/2
the value of x is 3/2 so plot it into one of the equations and solve for y.
7(3/2) + 2y = 8
21/2 + 2y = 8
-21/2 -21/2
2y = -5/2
y = -5/4
Related Questions
Represent 3kg 9gm using decimals
Answers
Answer:
I did not understand the questions well but If I try it out.
1. the difference b/w Kg and g is 1000,000.
2. as the 3 is kg I only convert the 9 grmas into Kg and it will look like this.
3.000009kgs.
There are four triangles and 16 squares what is the simplest was ratio of triangles to squares
Answers
AB=5 and BC=11. Find AC
Answers
Answer:
16
Step-by-step explanation:
B is between AC
AB = 5
BC = 11
5 + 11 = 16
A triangle has coordinates of A(1, 2), B(4, 6), and C(4, -3).
1. If the triangle is translated 2 units right, what are the new coordinates?
2. If ΔABC is reflected over the x-axis, what are the new coordinates?
Please show all work and not just the answer.
Answers
1 = (3,2) B= (6, 6) C = (6, -3)
Move two to the right since left and right deals with the x axis, add two to the x’s
2 = (1, -2) B = (4, -6) C = (4, 3)
Reflecting across the x axis means the formula is (x, -y) so switch the sign of the y’s
Answer:
1) A (3,2), B (6,6), C (6,-3)
2) A (1,-2), B (4,-6), C (4,3)
Step-by-step explanation:
1) Each of the x-values goes up two.
A (1,2) becomes (3,2)
B (4,6) becomes (6,6)
C (4,-3) becomes (6,-3)
2). I assume they mean the ORIGINAL ABC, not the one you just translated 2 units to the right.
To do this, you just multiply each y-value times negative one.
A (1,2) becomes (1,-2)
B (4,6) becomes (4,-6)
C (4,-3) becomes (4,3)
Which of the following lists has numbers arranged in INCREASING order?
Answers
Answer:
C
Step by step explanation:1/7 is greater than 1/8 so 1/7 must go after it. but negative is always less then positive so the correct order is
-1/8, -1/7, 1/8, 1/7
The numbers arranged in increasing order is
-1/8, -1/7, 1/8, 1/7
There are 4 values given:
1/7, 1/8, - 1/7, - 1/8
Negative figures are generally lesser than positive figures
1/7 is greater than 1/8
In negative values, the greater number becomes the smaller number
Therefore,
-1/8 is the the smaller number
Arrangements in increasing order =
-1/8, -1/7, 1/8, 1/7
Read more:
https://brainly.com/question/23774817
rotate the rectangle 90∘ clockwise about the cross
Answers
Answer:
[tex]\large \boxed{\mathrm{view \ attachment}}[/tex]
Step-by-step explanation:
The rectangle is rotated 90 degrees clockwise about the cross.
If you have a 4 pound bag of soil and you divide it into pots how muh did you put in one pot.
Answers
Answer:
1/2 pound
Step-by-step explanation:
8 pots / 8 equal to 1 pot.
4 lbs / 8 1/2 lbs
Answer:
1/2 pound per pot!
Step-by-step explanation:
4 pound to 8 pots
so we create a fraction 4/8
then reduce = 1/2
so 1/2 pound per pot!
Hope this helps! :)
IF DE = 10x + 12, EF = 4x - 15, and DF = 2x + 21, find DF. [In your solution, put
DF =YOUR ANSWER]
Answers
Answer:
Hey there!
10x+12+4x-15=2x+21
14x-3=2x+21
12x=24
x=2
DF= 2x+21
DF=4+21
DF=25
Let me know if this helps :)
How do you solve non-perfect squares to the nearest tenth
Answers
Answer:using math
Step-by-step explanation:
What is this 5n+6+(−7n)
Answers
Answer:
-2n+6
Step-by-step explanation:
5n+6+(-7n)
5n+6-7n
5n-7n+6
-2n+6
Hope this helps ;) ❤❤❤
Answer:
-2n + 6
Step-by-step explanation:
Combine like terms (terms with the same amount of variables).
Note the laws of signs:
Two additions signs: If there are two addition signs directly next to each other (which will not be shown very much), it means to add.
One addition sign & One negative sign: If there is one of each signs directly next to each other (as shown here), you must default it to negative and subtract.
Two negative signs: If there are two negative signs directly next to each other, you must default it to positive and add.
First, change the expression to signify how you should combine the terms:
5n + 6 + (-7n) = 5n - 7n + 6
Combine like terms:
(5n - 7n) + 6
-2n + 6
-2n + 6 is your answer.
~
the volume of the box is modeled by the function V (x) = 5x²+ 5x. whats the volume when x=4
Answers
Answer:
100
Step-by-step explanation:
V (x) = 5x²+ 5x
x=4
We plug in the x value:
V (x) = 5(4)²+ 5(4)
Now we sovle the equation:
5(4)² + 5(4)
5(16) + 5(4)
80 + 20
= 100
Hope that helps, and sorry if its incorrect
Answer:
100 cubic units
Step-by-step explanation:
just took the test on PLATO
which of the following transformations always create congruent figures?
select all the correct answers:
- reflections
- dilations
- rotations
- translations
Answers
Answer:
- rotations
Step-by-step explanation:
hope it help you
Describe a ratio in words about the coins that compares the whole coin collection to one part of it. Then write the ratio in at least two different ways.
Answers
Answer:
Kindly check explanation
Step-by-step explanation: A ratio which compares a whole coin collection to a part of it would be expressed in such a way that, the numerator will be the part of the coin which is being compared and the denominator being the value of the entire coin. Mathematically, It could be expressed in proportion form as ;
(Part or amount of the coin which is being compared / total value of entire coin)
A / B such that;
A = value or amount of coin which is being compared.
B = value of the entire coin.
Or in the form
A : B
part of coin being compared : blue of entire coins
Sam found $1.8 After finding the money in his pocket, Sekou finds an additional $0.75 in his backpack. Then he decides to buy a slice of pizza for $1.50. How many packs of gum will he be able to buy after this, if each pack costs $0.13? PLEASE HELP I WILL MARK YOU BRAINLIEST AND PLEASE EXPLAIN
Answers
Answer:
Hey there!
Sam's Money=1.80 dollars + 0.75 dollars.
1.80+0.75-1.50=1.05
1.05/0.13= 8.08.
He will be able to buy 8 pieces of gum.
Let me know if this helps :)
A customer at a Mexican restaurant placed a order for burrito bowls that cost $5 each and a plate of corn tocos that cost $13. How many burrito bowls did the costumer purchase if the bill was $23?
Answers
Answer:
the customer bought 2 burrito bowls and 1 corn taco.
Step-by-step explanation:
13+5=23
23+5=23
Simplify three to the negative ninth divided by three to the negative twelfth
Answers
Answer:
27
Step-by-step explanation:
sorry if i'm wrong
junior traveled 420 miles in 7 hours to visit his mother. how many miles per hour did he travel
Answers
Miles divided time gives you the miles per hour. Therefore 420 divided by 7 gives you 60mph.
A ceramics teacher divided 20kg of clay as equally as possible among the 29 students in her class. About how much clay did each student get?
Answers
Answer:
.69 rounded to the nearest hundredth
Step-by-step explanation:
-3 (n+6) + 10 = -8 pls help with this ASAP and show checked answer
Answers
Answer:
no solution/ns
Step-by-step explanation:
-3(n+6)+10=-8
-3n-18+10=-8
-3n-8=-8
-3n=o
ns
(-18)+(-7)+25 my answer was 36 but i just want to confirm
Answers
Answer:
0
Step-by-step explanation:
Note that + (- 7) = - 7 , thus
- 18 + (- 7) + 25 = - 18 - 7 + 25 = - 25 + 25 = 0
if 5 a solution of 3x + 30 = 9x?
Answers
Answer:
x = 5
Step-by-step explanation:
This equation can be rearranged in order to easily solve.
First, rearrange the equation by simply flipping it.
3x + 30 = 9x → 9x = 3x + 30
Then, you may solve for x.
9x = 3x + 30 subtract 3x from both sides of the equation
6x = 30 divide by 6 on both sides of the equation
x = 5
In a lab a 30% acid solution is being mixed with a 5% solution to create a 10% acid solution. What is the ratio of the amount of the 30% solution to the amount of the 5% solution used to create the 10% solution
Answers
Answer:
1:4
Step-by-step explanation:
30% solution = x 5% solution = ythen
10% solution = x + yAmount of acid:
0.3x + 0.05y = 0.1(x+y) 0.3x + 0.05y = 0.1x + 0.1y 0.2x = 0.05y 20x = 5y 4x = y x/y = 1/4So the ratio of 30% solution to the 5% solution is 1:4
b) Sajid makes a scale model of a lorry.
He uses a scale of 1:32
The length of Sajid's model lorry is 45 cm.
Chitra makes a scale model of the same lorry.
She uses a scale of 1:72
Work out the length of Chitra's model lorry.
Answers
Lines b and c are parallel. Which pairs of angles are supplementary?
Select all that apply.
1 and 8
2 and 4
3 and 5
6 and 7
Answers
Answer:
3 and 5
The angles that are vertically adjacent to the transversal.. when it cuts two parellel lines are always supplementary.. that is they make 180 degree.. hence, in the given pair 3 and 5 are supplementary..
as they lie on the transversal
Draw a diagram. Write the Segment Addition Postulate for the points described. Then solve for missing length.
9. T is between M and N if NT=x+5, MN=3x, and MT=7, what is MN?
Please show all work and not just answers.
Answers
Answer:
MN= 18
Step-by-step explanation:
NT=x+5
MN=3x
MT=7
MT+NT=MN
=>7+x+5=3x
=>12+x=3x
=>x-3x=-12
=>-2x=-12
=>x=12/2
=>x=6
MN=3x=3 * 6 = 18
Apothem = (the answer is a sqaure root)
Answers
Answer:
[tex]\sqrt{20}[/tex]
Step-by-step explanation:
To find the Apothem of a shape, we need to find how long the distance is from a vertex to the center of the shape.
We can see that they've already showed us how to do it: We need to find the length of the hypotenuse of the red triangle.
To do this, we can use the Pythagorean Theorem, which states that [tex]a^2 + b^2 = c^2[/tex].
We know that a is going to be half of 4, which is 2. We also know that b is going to be 4, so we can substitute inside the equation.
[tex]2^2 + 4^2 = c^2\\\\4 + 16 = c^2\\\\20=c^2\\\\c=\sqrt{20}[/tex]
Hope this helped!
What is the independence and dependent variable? Also label the (x) and (y) axis.
Answers
Answer:
The Independent Variable is the variable or thing that depends on nothing, nothing can affect it, nor can it be changed by any other variables, in this case the Independent variable is the Fish tank, the fish tank depends on nothing, and will stay the same.
The Dependent Variable is the variable or thing that depends on one or more variables in the equation, it be changed by any other variables, in this case the dependent variable is the fish, the fish depend on the water in the tank.
find the volume of rectangular box of length 4x, breath 6y power 2,height 2xy
Answers
Answer:
687
Step-by-step explanation:
Use the number line to find the coordinate of the point with a fraction
distance of 1/6 from A to B. *
10 points
A
B
-8-7-6-5-4-3-2-1
0
1
1
2
3
4
5
6
-5
-1
2
O 1
Answers
Answer:
-5
Step-by-step explanation:
Coordinate of A = -7
Coordinate if B = 5
Distance of AB = |-7 - 5| = |-12| = 12
We are asked to find the coordinate of the point that would be ⅙ from the A to B, which is ⅙ of AB.
Let's find what ⅙ of AB is.
AB = 12
Therefore, ⅙ of AB = ⅙*12 = 2.
From point A (-7), we move 2 points towards B which will give us ⅙ from A to B.
The coordinate = -7 + 2 = -5
-5 is the coordinate of the point with a fraction distance of ⅙ from A to B.
(IREALLY NEED HELP PLEASE! <3 ) Which numbers are a distance of 3.2 units from −4 on a number line? A number line with increments of .5 with a range of 0 to negative 7.5 Select each correct answer. −7.4 −7.2 −6.3 −4.2 −3.8 −0.8
Answers
Answer:
-0.8 & -7.2
Step-by-step explanation:
Answer: -0.8 & -7.2
Step-by-step explanation: