4.2x-1.4y= 2.1 what is Y plz i need help and i don't understand
Answer:
y = -1.5 + 3x
Step-by-step explanation
I'm sorry but I have no time, can someone comment me and explain? Thank you :)
Answer: y = -1.4(2.1 - 4.2x)
Step-by-step explanation:
4.2x - 1.4y = 2.1
Firstly you should move 4.2x over (by subtraction) so the new equation is:
-1.4y = 2.1 - 4.2x
Then you want to multiply everything by -1.4 to take it away from the y side. This will bring you to:
y = -1.4(2.1 - 4.2x)
This can be simplified down to
y = -2.94 + 5.88x
or
5.88x -2.94 = y
Please I don't understand this
Answer:
D
Step-by-step explanation:
To find volume: V = πr2h
V≈296.88
rounded: 296.9, but your answer would be the last one, D
. Liliana is renting a beach house for a family vacation. The house charges a $75 cleaning fee plus $95 per night. If Liliana wants to spend a maximum of $645 on the rental, which inequality represents “n”, the number of nights can she afford to rent the beach house?
Answer:
6 nights
Step-by-step explanation:
Set up your equation:
645=95n+75
then subtract the cleaning fee from the total to remove it from both sides
570=95n
then divid the remaining budget by the $95 per night charge
570/95= n =6
Meaning that she can afford 6 nights in the beach house at that price
Am I right do radio waves have the lowest frequency?
Answer:
yes you are correct
Step-by-step explanation:
Answer:
YES YOU ARE RIGHTStep-by-step explanation:
Radio wave, wave from the portion of the electromagnetic spectrum at lower frequencies than microwaves. The wavelengths of radio waves range from thousands of metres to 30 cm. These correspond to frequencies as low as 3 Hz and as high as 1 gigahertz (109 Hz).MARK ME BRAINLISTI will give brainly :)
Find the missing side of this right
triangle.
х
9
11
x = V[?]
Answer:
Uh-
Look below.
Step-by-step explanation:
[tex]11^2+9^2=x^{2} \\\\121+81=x^{2} \\202=x^{2} \\\sqrt{202}[/tex]
The measure of the side length (that is hypotenuse) of the right-angle triangle will be √202 units.
What is a Pythagoras theorem?The Pythagoras theorem states that the sum of two squares equals the squared of the longest side.
The Pythagoras theorem formula is given as
H² = P² + B²
Let the missing side of this right triangle be х.
Then the measure of the side length (that is hypotenuse) of the right-angle triangle will be
x² = 9² + 11²
x² = 81 + 121
x² = 202
x = √202
More about the Pythagoras theorem link is given below.
https://brainly.com/question/343682
#SPJ2
Help me please and thank you
Answer:
x = 20
y = 10
m∡8 = 110°
Step-by-step explanation:
m∡1 + m∡2 = 180
5x + y + 3x + y = 180
8x + 2y = 180
m∡1 = m∡8 (they are alternate-exterior angles and are congruent)
5x + y = 3x + 5y
2x = 4y
x = 2y
Substitute '2y' for 'x' in 8x + 2y = 180
8(2y) + 2y = 180
18y = 180
y = 10
x = 2(10)
x = 20
m∡8 = 3(20) + 5(10) = 110°
Find the slope of the line that passes trough(5,-10) and (5,-4)
Answer:
Answer Undefined
Step-by-step explanation:
This line is a vertical line because the x coordinate is the same on both points (5 is the x coordinate in both points). Vertical line's slopes are undefined because they go from up to down.
Answer:
Undefined
Step-by-step explanation:
Use the equation to find slope y2-y1/x2-x1
help me w this questions, i’ll give extra points!
Answer:
5
Step-by-step explanation:
5 × 5 × 5= 125 so 5 is the cube root
Answer:
5Step-by-step explanation:
I have this information memorized. The cube root of 125 is simply 5, because 5 x 5 x 5 = 125.
So your answer is 5.
(btw I'm actually 10 years old... I'm not kidding.)
Which expression means "the difference between two times six and five?"
A 2×6−5
B 2×(6−5)
C 2×6−2×5
D 2−6−5
Answer:
Step-by-step explanation:
B
The table compares actual lengths in a room to lengths in a blueprint of the room.
Blueprint length (in.) 2 4 6 8 10 12
Actual length (ft) 3 6 9 12 15 18
Complete the equation for the relationship, where y is the actual length in feet, and x is the blueprint
length in inches.y =
The length of a wall on the blueprint is 9 inches. Find the actual length of the wall.
The actual wall is
feet long.
A window in the room has an actual width of 1.5 feet. Find the width of the window in the blueprint.
The width of the window in the blueprint is
in.
Answer:
13.5 feets
1 inch
Step-by-step explanation:
Given :
Blueprint length (in.) __2 4 6 8 10 12
Actual length (ft) _____3 6 9 12 15 18
From the data:
Blueprint : actual
2 in : 3 feets
Length of wall on blueprint = 9 inches
Actual length of wall :
2 inches = 3feets
9 inches = x
Cross multiply
2x = 27
x = 27 /2
x = 13.5 feets
B.)
For actual width = 1.5 feets
2 inches = 3feets
x = 1.5 feets
3x = 2 * 1.5
3x = 3
x = 3/3
x = 1 inch
I need help on this. Please help me.
Answer:
c
Step-by-step explanation:
(x+5)(x-4)(x+2) is identical to x^3+ax^2
Answer:
a = 3
Step-by-step explanation:
Factorize (x+5)(x-4)(x+2)
(x+5)(x-4)(x+2)
= (x²-4x+5x-20)(x+2)
= (x²+x-20)(x+2)
= (x³+2x²+x²+2x-20x-40)
= x³+3x²-18x -40
Compare with x^3+ax^2
3x² = ax²
3 = a
Rearrange
a = 3
Hence the value of a that makes the expressions identical is 3
i need help simplifying these radicals. someone please help!!
First one: [tex]60\sqrt{7}[/tex]
Second one: [tex]160\sqrt{3}[/tex]
[tex]12 \sqrt{175} [/tex]
[tex] \sqrt{175 \times {12}^{2} } [/tex]
[tex] \sqrt{175 \times 144} [/tex]
[tex] \sqrt{25200} [/tex]
//
[tex]16 \sqrt{300} [/tex]
[tex] \sqrt{300 \times {16}^{2} } [/tex]
[tex] \sqrt{300 \times 256} [/tex]
[tex] \sqrt{76800} [/tex]
PLEASE HELP
Corresponding angles of similar figures are ___.
Question 3 options:
proportional
supplementary
complementary
congruent
What is 3x+6 if x =2
Answer:
12
Step-by-step explanation:
Answer:
The Answer would be 12
Step-by-step explanation:
This is because, if you replace x with 2, you will be able to compute the following:
y = 3(2) + 6
y = 6 + 6
y = 12
Please Mark Brainliest
15.5 - (4 ● 9) -(24÷3)
Answer:
no sé cómo hacer pero para la próxima lo intento
A bag contains 20 marbles, of which 10 are white.
What is the probability that a randomly selected marble will be white?
Write your answer as a fraction or whole number
P(white)
Use substitution to solve the system of equations.how many solutions are there?
1/2x-1/3y=5
X=2/3y+10
Answer:
one solution
x = 0
y = -15
Step-by-step explanation:
1/2x-1/3y = 5
x = 2/3y+10
substitute x
1/2(2/3y+10)-1/3y = 5
1/3y+5-1/3y = 5
5 = 5
x = 0
-1/3y = 5
-1/3y/-1/3 = 5/-1/3
y = -15
When using the given diagram to determine the area of the pentagon by decomposition, which statements are correct?:
Answer choices:
(A) Area of ∆ABC = 84 in²
(B) Area of ∆ABC = 42 in²
(C) Area of trapezoid = 1/2(14 ÷ 10)8
(D) The area of the pentagon is 180 in²
(E) The area of the pentagon is 138 in²
APPLY TO ALL THAT IS TRUE
Answer:
Options (B) and (E)
Step-by-step explanation:
Area of ΔABC = [tex]\frac{1}{2}(\text{Base})(\text{Height})[/tex]
= [tex]\frac{1}{2}(14)(6)[/tex]
= 42 in²
Area of trapezoid ADEC = [tex]\frac{1}{2}(b_1+b_2)h[/tex]
[Here, [tex]b_1[/tex] and [tex]b_2[/tex] are the parallel sides and 'h' is the height of the isosceles trapezoid given]
= [tex]\frac{1}{2}(10+14)(8)[/tex]
= 96 in²
Area of the pentagon = Area of triangle ABC + Area of trapezoid ADEC
= 42 + 96
= 138 in²
Therefore, Options (B) and (E) are the correct options.
How do you do this?
Answer:
Legs: [tex]x[/tex]
Hypotenuse: [tex]\sqrt{2}\cdot x[/tex]
Step-by-step explanation:
In this case, a 45-45-90 right triangle is a right triangle whose legs have the same length and hypotenuse is [tex]\sqrt{2}[/tex] times the length of any of the legs. Then, the dimensions of this triangle are, respectively:
Legs: [tex]x[/tex]
Hypotenuse: [tex]\sqrt{2}\cdot x[/tex]
plumber 2: y=105x+75
plumber1: (picture)
what do they equal?
Answer:
x= -185
Step-by-step explanation:
y=105x + 75
-75=105x
-75=x
-105
x= - 185
Khloe invests money in an account paying a simple interest of 7% per year. If she invests $140 and no money will be added or removed from the investment, how much will she have in one year, in dollars and cents?
Answer:
$149.80Step-by-step explanation:
It is going to be:
$140 + 7% of $140 =$140 + $140*0.07 = $140*1.07 =$149.80If the scale factor was 1.5 would that create an enlargement or reducti
of the original figure?
Homework, 20 points for whoever answers
Note: if you don’t know the answer or unsure of it, please do not say it or type “I don’t know” as the answer, it takes away my points and my time, thank you :D
Answer:
3) D
4) C
Step-by-step explanation:
1/2 + 1/4 = 3/4
17.6-4.4 = 13.2
help help help, i don't get this
Answer:
no tengo la menor idea
A die has 12 faces numbered 1 through 12. On the die, 5 of the faces show prime numbers, so the theoretical probability of rolling a prime number is 5/12. Which is the most likely prediction for the number of times a prime number will occur when rolling the number cube 300 times?
Answer:
5/12 * 300 = 125 times
explain:
I hope this answer can help
solve the answer below
first to get the answer right gets brainlyist
Answer:
undefined
Step-by-step explanation:
Answer:
x= -3
Step-by-step explanation:
hope this helps
May someone help me with this :)
Answer:
6 roll for 8.89
Step-by-step explanation:
4roll for 6.79 you pay 1.60 per roll and 6 roll for 8.89 you pay roughly 1.40 per roll
There are 3 seventh- grade boys,4 seventh-grade girls, 5 eighth grade boys, and 8 eight grade girls that have parts in the school play. One cast member will have the responsibility of introducing the play. That cast member will be chosen randomly. What is the probability that the student introducing the play will be a boy?
Answer:
40%
Step-by-step explanation: 3 + 5 = 8 boys total 4 + 8 = 12 girls total 8 + 12 = 20 kids total. To find out the probability of randomly choosing a boy you have to do the number of boys over the total amount of kids (8/20) which will equal 40%.
if the area of square 3 is 80 cm squared and square 2 is 100 cm squared what is the area of square 1
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