Answers
Answer:
We need to solve this system of equations by substitution:
-6x-2y =20
3y=x
Yu can do it with the letter you decide
You can get the x from the second equation and replace in the first:
3y = x
-6x - 2y = 20 -> -6(3y) - 2y = 20 --> -18y - 2y = 20 --> y=-1
Then we can replace in the second one:
3*(-1) = x ---> -3 = x
So the answer is x = -3, y = -1
Solved by substitution method:
Related Questions
The average ant is about 7.5x10^-2 inches in length. The average adult human is about 6.72x10^1 inches tall. About how many times bigger is the human than an ant?
Answers
Answer:
Step-by-step explanation:
The average ant is about 7.5x10^-2 inches in length. The average adult human is about 6.72x10^1 inches tall. About how many times bigger is the human than an ant?
help me please i don’t understand
Answers
Answer:
please go through the steps
how many solutions does x=-2 have
Answers
Answer:
One solution
Step-by-step explanation:
In a one- variable equation has infinitely many solutions when solving results in a true statement, such as 2=2
In a one- variable equation has one solution when solving results in one value for the variable, such as x = 5
In a one - variable equation has no solution when solving results in an untrue statement, such as 2=3
So, in this case the result x = -2 belongs to the 2nd sentence where it says one solution.
Hope this helps :)
Hayhay#5682
add me plz
4 x 6 = 24
Answers
I will later
Your answer is 24
May nilbin be with you
Write a small statement to convince others of the importance of food safety
Answers
Answer:
Food is what fuels our bodies. Food is what keeps us alive, but when food is not kept fresh and safe, it can cause us to get sick or even die from food poisoning.
PLEASE HELP ITS MATH!!!!
This triangle has one side that lies on an extended line segment. Based on this triangle, what statement about x is true? A. x = 27 because 180−109−44=27 B. x = 65 because 109−44=65 and 44 + 65 = 109 C. x = 71 because 180−109=71 D. x = 153 because 109 + 44 = 153 and 153−44=109
MEASUREMENTS (down below)
A triangle with base on an extended line. Two angle measures are given. Top interior angle is forty-four degrees. Lower right exterior angle is one hundred nine degrees. Lower left interior angle is labeled x degrees.
Answers
Answer:
B. x = 65 because 109−44=65 and 44 + 65 = 109
Step-by-step explanation:
Given :
The triangle below :
Sum of interior angles of a triangle :
(44° + x + (180 - 109) = 180°
44° + x + 71° = 180
115° + x = 180°
x = 180° - 115°
x = 65°
If 2^2x = 2^3, what is the value of x?
Answers
Answer:
X = 3/2.
Step-by-step explanation:
Please refer to the attachment given above.
The value of x in the equation 2[tex]^{(2x)}[/tex] = 2³ is 1.5.
To find the value of x in the equation 2[tex]^{(2x)}[/tex] = 2³, we can use the property of exponents that states: If two exponential expressions have the same base and are equal, then their exponents must be equal.
In this case, we have 2[tex]^{(2x)}[/tex] = 2³. Since the bases are the same (both are 2), we can equate the exponents:
2x = 3
Now, to solve for x, divide both sides by 2:
x = 3/2
So, the value of x is 3/2 or 1.5.
To know more about equation
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Class A has 20 pupils and class B has 22 pupils.
Both classes sit the same maths test.
The mean score for class A is 40.
The mean score for both classes is 47.
What is the mean score (rounded to 2 DP) in the maths test for class B?
Answers
40×20=800 i just gest so if you wana delite my answer go then
Solve for x: x/7 - 3 ≥ 8.
Answers
Answer:
x is more than or equal to 77
Step-by-step explanation:
Find the product of (x − 8)2 and explain how it demonstrates the closure property of multiplication.
A. x2 − 64; is a polynomial
B. x2 − 16x + 64; is a polynomial
C. x2 − 64; may or may not be a polynomial
D. x2 − 16x + 64; may or may not be a polynomial
Answers
Answer:
B
Step-by-step explanation:
(x-8)^2=(x-8)(x-8)=x^2-8x-8x+64=x^2-16x+64
Answer:
x2 − 16x + 64; is a polynomial
Please answer this question
Answers
Answer:
THIS QUESTION IS VERY COMPLICATE SO I CAN'T ANSWER THIS QUESTION
a) Show that the equation x^3 + 6x - 5 = 0 has a solution between x = 0 and x = 1
Answers
Answer:
Since [tex]f(0) < f(x) < f(1)[/tex], there is a solution for [tex]f(x)[/tex] between [tex]x = 0[/tex] and [tex]x = 1[/tex].
Step-by-step explanation:
A solution of the polynomial is a root such that sign of dependent value changes, either from positive to negative or from negative to positive. Let [tex]f(x) = x^{3} + 6\cdot x - 5[/tex], [tex]x[/tex] is a solution of the equation if and only if [tex]f(x) = 0[/tex]. We proceed to evaluate the function at each bound:
x = 0
[tex]f(0) = 0^{3}+6\cdot (0) - 5[/tex]
[tex]f(0) = -5[/tex]
x = 1
[tex]f(1) = 1^{3}+6\cdot (1) - 5[/tex]
[tex]f(1) = 2[/tex]
Since [tex]f(0) < f(x) < f(1)[/tex], there is a solution for [tex]f(x)[/tex] between [tex]x = 0[/tex] and [tex]x = 1[/tex].
(02.02 MC) Triangle ABC is shown. A is at negative 2, 1. B is at negative 1, 4. C is at negative 4, 5. If triangle ABC is reflected over the x‐axis, reflected over the y‐axis, and rotated 180 degrees, where will point B' lie? (−1, 4) (1, −4) (4, −1) (−4, 1)
Answers
Answer:
(-1,4)
Step-by-step explanation:
Point B in the pre-image is at (-1,4).
If triangle ABC is reflected over the x‐axis, the y-coordinate changes to its negative value, thus we have the transformation:
Next, if the point (-1,-4) is reflected over the y‐axis, the x-coordinate changes to its negative, Thus, we have the transformation:
Finally, a rotation by 180 degrees will give the coordinates of B' as:
The point B' will lie in (-1, 4) [ the same place as B].
The coordinates of point B' are [tex](-1,4)[/tex]. So, the first option is correct.
Given:
The vertices of a triangle ABC are [tex]A(-2,1), B(-1,4)[/tex] and [tex]C(-4,5)[/tex].
Triangle ABC is reflected over the x‐axis, reflected over the y‐axis, and rotated 180 degrees.
To find:
The point B'.
Solution:
If a figure reflected over x-axis, then
[tex](x,y)\to (x,-y)[/tex]
[tex]B(-1,4)\to B_1(-1,-4)[/tex]
If a figure reflected over y-axis, then
[tex](x,y)\to (-x,y)[/tex]
[tex]B_1(-1,-4)\to B_2(-(-1),-4)[/tex]
[tex]B_1(-1,-4)\to B_2(1,-4)[/tex]
If a figure rotated 180 degrees about the origin, then
[tex](x,y)\to (-x,-y)[/tex]
[tex]B_2(1,-4)\to B'(-(1),-(-4))[/tex]
[tex]B_2(1,-4)\to B'(-1,4)[/tex]
So, the coordinates of point B' are [tex](-1,4)[/tex].
Therefore, the first option is correct.
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It takes 3 1/2 spoons of chocolate syrup to make 3 2/5 gallons of chocolate milk. How many spoons would it take to make 4 gallons of chocolate milk?
Answers
Answer:
4 2/17
Step-by-step explanation:
It takes 3 1/2 spoons of chocolate syrup to make 3 2/5 gallons of chocolate milk
3 1/2= 3 2/5
7/2= 17/5
1 gallon = 7/2÷17/5
= 7/2 × 5/17
= 35/34
Therefore the number of spoons required to make 4 gallons
= 4 × 35/34
= 140/34
= 70/17
= 4 2/17
50:15
There are 12 boys and 16 girls in a classroom. Which represents the simplified ratio of girls to students in the classroom?
O 3 to 4
О 4 to 3
0 4 to 7
O 7 to 4
Answers
Answer:
12:16 is boys to girls
16 : 28 is girls to everyone so..
4 to 7, the third answer
Brainiest plz? :)
Need help with this (10 points)
Answers
Answer:
5 is greater than equal to 5. So f(5)=5+8=13
Step-by-step explanation:
¿conjunto de fuerzas aplicado sobre un objeto de manera que la linea de accion de todas las fuerzas convergan en un mismo punto?, ¿ cual es el conjunto de esas fuerzas? . agradecería mucho si lo contestan porfis uwu
Answers
Answer:
Fuerzas Convergentes
Fuerza Resultante
Adam is selling cookies for a fundraiser. The cookies cost him $1.49 a box. He is selling them for $2.25 a box. Adam sold 209 boxes of cookies. How much profit did Adam earn?
Answers
f(2) if f(x) = 2x - 5
Answers
Answer:
The answer is 4.
Step-by-step explanation:
Answer:
f(2) = -1
Step-by-step explanation:
Plug in 2 for x in the equation: f(2) = 2(2) - 5
Remember order of operations/ PEMDAS
f(2) = 4-5
f(2) = -1
This figure is 1/4 of a circle.
What is the best approximation for the perimeter of the figure?
Use 3.14 to approximate pi.
A 4.7 cm
B 7.7 cm
C 10.7 cm
D 18.8 cm
Answers
Answer:
7.7
oof oof oof oof oof oof oof oof oof oof oof
Answer:
10.7
Step-by-step explanation:
What is a dot plot and how do you read it? Check all that apply.
O A dot plot is a simple plot that displays data values as dots above a number line
O Dot plots show the frequency with which a specific item appears in a data set.
O 3 students spent 4 hours on homework.
O 5 students spent 2 hours on homework.
O Dot plots show the distribution of the data.
O Students spent 1 to 6 hours on homework.
Answers
Answer:
I need help on the same exact question.I'll figure it out for you though
Step-by-step explanation:
So I think it's the first one, the fourth one, and the last one, and the second one.
I hope it helps you!
The soccer club has planned a trip to a tournament. The cost of the van is
$231. When 3 students who are not members of the club join the trip, the
transportation cost per person drops by $4.50. How many soccer club
members are going to the tournament?
O A. -14, 11
B. 11
C. -14
D. 14
Answers
Answer:
d
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
At a baseball game, a vender sold a combined total of 208 sodas and hot dogs. The number of sodas sold was three times the number of hot dogs sold. Find the number of sodas and the number of hot dogs sold.
Answers
Answer:
sodas = 135 hot dogs = 45
Step-by-step explanation:
(S stands for sodas and H stands for hot dogs)
S + H = 180
3H+H = 180
4H = 180
H = 45
S = 45*3
S = 135
Show work for full credit please.
Answers
Answer:
x = 7.5
Step-by-step explanation:
This can be solved via cross multiplying.
6x = 5 × 9 | Multiply the denominators by the respective nominators.
6x = 45 | Multiply 5 × 9
x = 7.5 | Divide 45 ÷ 6 (Division Property of Equality)
Answer:
x=7.5
Step-by-step explanation:
for this you would cross-multiply to get x
6x=9(5)
6x=45
x=7.5
can y'all pls help me I don't want to fail and I will mark.
Answers
Answer:
the slope is 2/3
Step-by-step explanation:
Find four consecutive integers such that 8 times the sum of the first and the third is 40
greater than 10 times the fourth.
Answers
express the given number 5,120,000 in scientific notation
Answers
Answer:
5.12 * 10^6
Step-by-step explanation:
Plea look at the photo of Parallelogram properties.
Question: Find the measurement indicated in each parallelogram.
Please explain it you can:)
Answers
Answer:
1. 45
2. 105
3. 95
4. 85
Step-by-step explanation:
For problems 1 and 4:
Consecutive angles are supplementary in a parallelogram, which means they equal 180.
180 - 135 = 45
180 - 95 = 85
For problems 2 and 3:
Opposite angles are congruent or equal each other in a parallelogram,
Ned wrote the following statement:
"You can only draw one unique isosceles triangle that contains an angle of 80º."
Which statement is true? (1 point)
Answers
Answer:
You didnt show the statements...
Step-by-step explanation:
Help me help me help me
Answers
Answer:
The ratio is 5:4 and the only one that fits is 25,20 so that's the answer.
Step-by-step explanation: