Answer:
x=10
y=15
Step-by-step explanation:
Since we know y in terms of x, we can use substitution and say instead of-
5x-4y=-10
5x-4(2x-5)=-10
5x-8x+20=-10
-3x=-30
x=10
Substitute x into the equation-
y=2x-5
y=2(10)-5
y=20-5=15.
If y varies directly with x, write an equation for the direct variation. Then find each value,
if y = 6 when x =30, find y when x = 15
PLEASE HELP ME PLEASE !!!!!
Answer:
y = 1.25x + 6
m = 1.25
b = 6
Step-by-step explanation:
Anyone can help plewse! If you can’t read it please tell
Answer:
Look below! Branliest please!
Step-by-step explanation:
To find the volume, we multiply 12 by the height and then by 3.14. So for 1, we get 1*12 which equals 12, then we multiply that by 3.14 and we get 37.68. So we do that for all of them.
1*12*3.14 = 37.68
3*12*3.14 = 113.04
5*12*3.14 = 118.4
7*12*3.14 = 263.76
In a class, the ratio of girls : boys is 5:3.
What fraction of the class are boys?
please answer urgent , high points up for grabs , please give good explanation
If the NCUA charges 3.3 cents per 100 dollars insured and Credit Union M pays $5,995 in NCUA insurance premiums, approximately how much is in Credit Union M’s insured deposits?
Answer:
c
Step-by-step explanation:
What does 3/4 mean in ordered pairs.
Answer:
Basically it is an x and y axis type of equation. The 3 could be how many steps to the right and the 4 could be how many steps forward.
Step-by-step explanation:
Start from the center of the grid which is called the origin and jump 3 times to the left. Then, you move 4 steps forward and then you have your ordered pair
3. a. Carla buys a minivan for $20,500. She writes a proportion to find the selling price is S Is Carla's method correct? Explain.
Answer:
Yes Carla is correct.
Step-by-step explanation:
HELPPPP!!! ITS DUE TODAY!!
Answer:
Step-by-step explanation:
2x+4y=82
x=41
y=20.5
hope this helps!
GYMNASTICSLOVE
PRONOUNS (SHE/THEY)
✨ Easy points for those who are good at finding slope ✨
( The question is “Which Graph Matches the Following Equation” )
Answer:
2nd one
Step-by-step explanation:
y=2x-1 meaning start off at -1 rise 2 run 1. not sure if that makes sense but yea the answer is the second one.
6x1/4= ? (fractions)
3x2/3 = ?
Answer:
6*1/4 = 1 2/4 or 6/4
3*2/3 = 2 or 6/3
Step-by-step explanation:
I need help on these ASAP
Help please... I need help
Step-by-step explanation:
3x = 12 - 18
3x = (- 6)
X = (-6)/3
x = (-3)
The store price of an electronic gadget is $100. If the markup percent set by the store is 45%. Calculate the markup price set by the store on the electronic gadget.
Answer:
145$ is the markup price i think
Step-by-step explanation:
100$+ 45%=x
100/100%=1
45%*1=45
100$+45$= 145$
plz help what’s the answer to this
Jerry is saving his money. He started with $15.00. If he adds $10.00 to his savings
each month, how much will he have saved after 2.5 months?
Answer:
$40
Step-by-step explanation:
use y = mx + b
y = amount saved = ?
m = amount saved per week = $10
x = time (in months) saving = 2.5
b = money jerry started with = $15
plug in:
y = (10)(2.5)+15
y = $40
What is another way to express 9⁴?
Answer:
6561
Step-by-step explanation:
Simplifying 9⁴ gives 6561
You can multiply exponents to get certain values, so it can also be expressed as:
[tex](9^{2})^2[/tex]
What is y=2/3x + 4 writen in standard form ? Write using integer coefficients
Answer:
2/3x-y=-4
Step-by-step explanation:
In the adjoining figure, find the values of X and Y.
Answer:
x=5 cm,y=12 cm
Step-by-step explanation:
We are given that
RQ=3 m
PQ=4 cm
RP=x cm
RS=13 cm
SP=y cm
We know that Pythagoras theorem
[tex](Hypotenuse)^3=(base)^2+(perpendicular\;side)^2[/tex]
In right triangle RQP
Using Pythagoras theorem
[tex]RP^2=RQ^2+PQ^2[/tex]
Substitute the values
[tex]x^2=3^2+4^2[/tex]
[tex]x^2=9+16[/tex]
[tex]x^2=25[/tex]
[tex]x=\sqrt{25}=5[/tex]cm
Now,
In triangle RPS
[tex]RS^2=RP^2+SP^2[/tex]
[tex](13)^2=5^2+y^2[/tex]
[tex]169=25+y^2[/tex]
[tex]169-25=y^2[/tex]
[tex]144=y^2[/tex]
[tex]y=\sqrt{144}=12[/tex] cm
5
Which expressions are equivalent? Select all that apply.
A 3(x + 2) + 4x and 7x + 6
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B 2(x + 3) + 2x and 4x + 3
C -2 + 4(x + 3) and 4x + 10
D 3x + 5(x-1) and 8x-5
E
5x - 2(x + 4) and 3x + 8
F
4 - 5(x + 2) and 5x-6
Answer:
A
Step-by-step explanation:
3(x+2)+4x=3x+6+4x=7x+6
0.77 m = how many cm
Answer:
77 cm
Step-by-step explanation:
Answer:
0.77 meters=77 centimeters.
Step-by-step explanation:
you have to multiply the length value by 100
i hope this helps. :)
Which expressions are equivalent to 3(x + 3y + 2x − y )?
3(3x + 2y) and 9x + 6y
3(3x + 4y) and 9x + 12y
3(x + 4y) and 3x + 12y
3(x + 2y) and 3x + 6y
Answer:
3(3x + 2y) and 9x + 6y
Step-by-step explanation:
3(x + 3y + 2x - y)
= 3 (x + 2x) + (3y - y)
= 3 (3x + 2y)
= (3 • 3x) + ( 3 • 2y)
= 9x + 6y
"write an equation of the perpendicular bisector or the segment with endpoints Q(-2,0) and R(6,12). what does y equal?
Answer:
The equation of perpendicular bisector of QR is:
y = -\frac{2}{3}x+\frac{22}{3}y=−32x+322
Step-by-step explanation:
Given points are:
Q(-2,0)\ and\ R(6,12)Q(−2,0) and R(6,12)
First of all, we have to find the slope of the given line
So,
m = \frac{y_2-y_1}{x_2-x_1}m=x2−x1y2−y1
Here
(x1,y1) = (-2,0)
(x2,y2) = (6,12)
Let m1 be the slope of QR:
Then
\begin{gathered}m_1 = \frac{12-0}{6+2}\\= \frac{12}{8}\\= \frac{3}{2}\end{gathered}m1=6+212−0=812=23
Let m2 be the slope of perpendicular bisector
We know that the product of slopes of two perpendicular lines is -1
\begin{gathered}m_1.m_2 = -1\\\frac{3}{2}.m_2 = -1\\m_2 = -1 * \frac{2}{3}\\m_2 = -\frac{2}{3}\end{gathered}m1.m2=−123.m2=−1m2=−1∗32m2=−32
The bisector will pass through the mid-point of QR
\begin{gathered}M = (\frac{x_1+x_2}{2} , \frac{y_1+y_2}{2})\\M = (\frac{-2+6}{2}, \frac{0+12}{2})\\M = (\frac{4}{2}, \frac{12}{2})\\M = (2,6)\end{gathered}M=(2x1+x2,2y1+y2)M=(2−2+6,20+12)M=(24,212)M=(2,6)
Slope-intercept form of equation is:
y = m_2x+by=m2x+b
Putting the value of slope
y = -\frac{2}{3}x+by=−32x+b
Putting (2,6) in the equation
\begin{gathered}6 = -\frac{2}{3}(2)+b\\6 = -\frac{4}{3}+b\\b = 6+\frac{4}{3}\\b = \frac{18+4}{3}\\b = \frac{22}{3}\end{gathered}6=−32(2)+b6=−34+bb=6+34b=318+4b=322
So,
y = -\frac{2}{3}x+\frac{22}{3}y=−32x+322
Hence,
The equation of perpendicular bisector of QR is:
y = -\frac{2}{3}x+\frac{22}{3}y=−32x+322
Spiral Review A chili cook-off has adult tickets a and child tickets C. A group of visitors buys 3 adult tickets and 2 child tickets and pays a total of $26.
Another group buys 5 adult tickets and 3 child tickets and pays $42. Write and solve a system of equations to find the price of each type of ticket.
Enter the correct answers in the boxes.
Equation 1:?
Equation 2:?
adult: $ 6
child: $ 4
I just need help on making equations
Equation 1 would be: 3a+2C
Equation 2 would be: 5a+3C
The system of equations are solved and the cost of adult ticket and child tickets are $ 6 and $ 4 respectively
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the equation be represented as A
Now , the value of A is
Let the adult tickets be a
Let the child tickets be c
Group A buys 3 adult tickets and 2 child tickets and pays a total of $26
So , 3a + 2c = 26 be equation (1)
And , Group B buys 5 adult tickets and 3 child tickets and pays $42
So , 5a + 3c = 42 be equation (2)
On simplifying , we get
Multiply equation (1) by 5 and equation (2) by 3 , we get
15a + 10c = 130 be equation (3)
15a + 9c = 126 be equation (4)
Subtracting equation (4) from equation (3) , we get
c = $ 4
Therefore , the cost of child ticket is $ 4
Substituting the value of c in equation (1) , we get
3a + 2 ( 4 ) = 26
3a + 8 = 26
Subtracting 8 on both sides , we get
3a = 18
Divide by 3 on both sides , we get
a = $ 6
Therefore , the cost of adult ticket is $ 6
Hence , the system of equations are solved
To learn more about equations click :
https://brainly.com/question/19297665
#SPJ5
About 80% of e-waste is shipped outside of the US. Which of the following statements about e-waste is false? A) E-waste is routinely shipped to China. B) Shipments are received by unprotected workers who break the shipments down, retrieve valuable materials, and reuse the materials. C) E-waste is shipped to countries under trade agreements. D) The cost of exporting e-waste is covered by the country accepting the waste.
Answer:
D)
Step-by-step explanation:
Right on Edge 2021
Answer:
D) The cost of exporting e-waste is covered by the country accepting the waste.
Step-by-step explanation:
edge :D
What is the slope intercept ?
PLEASE HELP ME ITS URGENT !
Answer:
y=mx+b
Step-by-step explanation:
that is the equation
Answer:
5 over -3 is the correct answer
Please Help. Given trapezoid ABCD, Prove ΔBEC ~ ΔDEA
Answer:
AAA (or AA)
Step-by-step explanation:
Prove ΔBEC ~ ΔDEA
(using three angles is unnecessary because you can just use Angle Angle to prove similarity)
First, m∠BCE = m∠EAD because of alternate interior angles.
Then, m∠ADE = m∠CBE because of alternate interior angles.
m∠BEC = m∠AED because of vertical angles
Thus, ΔBEC ~ ΔDEA because of Angle Angle Angle [AAA] (or AA if you only chose to use 2 angles)
Help please, Ill try to give branliest if it is right :)
Answer:
3x3= 9
9-3=6
3+3=6
Step-by-step explanation:
For every car you sell, you get a 6% commission. If your total sales for the month are $125, 650 , what is your commission ?
Answer:
=> 125,650 x 6% = $7,539
Step-by-step explanation:
What is the value of x?
(2x + 5) = 27
Answer:
x=11
Step-by-step explanation:
2x+5-27
step 1 subtract 5 from each side
2x=22
step 2 divide each side by 2
x=11
Answer:
2x=27-5
2x=22
2x/2=22/2
x=11
I need help with this problem-1 1/5 + (-3/5)
Answer:
-1 4/5
Step-by-step explanation: