Answer:
The elimination method for solving systems of linear equations uses the addition property of equality. You can add the same value to each side of an equation. So if you have a system: x – 6 = −6 and x + y = 8, you can add x + y to the left side of the first equation and add 8 to the right side of the equation.
Answer:
You can add the same value to each side of an equation. So if you have a system: x – 6 = −6 and x + y = 8, you can add x + y to the left side of the first equation and add 8 to the right side of the equation.
Step-by-step explanation:
Find the measure of angle x.
A.33
B.40
C.45
D.57
Answer:
A) 33 is answer is sure and fix
Step-by-step explanation:
answer of this qn is 33 option A
A teacher wants to investigate whether listening to music while taking a math test increases scores. He instructs half
of his 36 students to listen to music while taking a test and the other half to not listen to music during the test. To
determine who listens and who does not, the teacher identifies the two students who scored highest on the last test
and randomly instructs one to listen to music and one to not. The teacher does the same for the next two highest-
scoring students and continues in this manner until each student has their instructions. Which of the following best
describes this plan?
O This is a cluster sample.
O This is an observational study.
O This is a stratified random sample.
O This is an experiment with blocking.
O This is a completely randomized experiment.
For your question: "A teacher wants to investigate whether listening to music while taking a math test increases scores. He instructs half
of his 36 students to listen to music while taking a test and the other half to not listen to music during the test. To
determine who listens and who does not, the teacher identifies the two students who scored highest on the last test
and randomly instructs one to listen to music and one to not. The teacher does the same for the next two highest-
scoring students and continues in this manner until each student has their instructions. Which of the following best
describes this plan?"
The answer is D
8(3x-2)=2(8)+16 explanation how the order of operations is used. How the equation is kept balanced.
Answer:
See explanation
Step-by-step explanation:
Given;
8(3x-2)=2(8)+16
We clear the brackets
24x - 16 = 16 + 16
24x - 16 = 32
We add 16 to both sides
24x - 16 + 16= 32 + 16
24x = 48
We divide both sides by 24
24x/24 = 48/24
x =2
7TH GRADE MATH PLS HELPPPP,
About how many centimeters are in 6.25 inches if 1 inch is about 2.5 centimeters? Show your reasoning.
PL SHOW UR WORK, WILL GET BRAINLEST N POINTS IF YOU EXPLAIN!!!!
Answer:
15.625 cm
Step-by-step explanation:
1 in = 2.5 cm
6.25 in = x
x = 6.25 * 2.5
x = 15.625 cm
A grocery store sells a bag of 7 oranges for $6.65. What is the unit cost?
can you please help me solve the question pictured?
Answer:
2 x 10 to the 3rd power
Step-by-step explanation:
0.008/0.000004 = 2,000
2,000 = 2 x 10 3
Melody is solving the equation x +12=31. Find her mistake and correct it.
Consider right triangle
Answer:
i think its c?
Step-by-step explanation:
Alejandra’s fish tank hold 10 Liters of water. Every day her cat drinks 0.2 Liters of water from the tank when she away from home. The fish will get sick if the water drops below 4 Liters of water. Alejandra wants to know how many days she can go before having to refill the missing water. Write and solve an inequality that represents this situation. Explain clearly what the solution to the inequality means in the context of this situation.
Answer:
4b² is the volume of the fish tank.
Step-by-step explanation:
I think hope it helps
You buy two packages of almonds. One package is 10.47 kg and the other is 8.23 kg. What is the difference?
Answer:
2.04 kg
Step-by-step explanation:
Can you help me graph y = -7x - 1 ?
what is the measure of
Answer:
[tex]abd = 180 - 32 (linear \: pair)\\ = 148 [/tex]
2 , 19, 4, 1,8
median ???
Answer:
Median is 4
Step-by-step explanation:
Factor [tex]2x^2+13x-7[/tex]
PLS HELP 6TH GRADE MATH DUE IN 1 MIN
Answer:
second one is also done.
Debi walks laps around the mall for exercise during the winter months. The table represents the number of steps recorded on her pedometer as she walks laps around the mall one day.
Answer:
One lap around the mall is equal to 2,425 steps
Step-by-step explanation:
I got it right
Find the slope of the line that passes through (2, 12) and (9, 3).
Simplify your answer and write
as a proper fraction, improper fraction, or integer.
Answer:
The slope of line is [tex]-\frac{9}{7}[/tex].
Step-by-step explanation:
Given points are;
(2, 12) and (9, 3)
Here,
x1 = 2 and y1 = 12
x2 = 9 and y2 = 3
Slope of a line is given by the following formula;
[tex]m =\frac{y_2-y_1}{x_2-x_1}\\\\m = \frac{3-12}{9-2}\\\\m=\frac{-9}{7}[/tex]
Therefore,
The slope of line is [tex]-\frac{9}{7}[/tex].
If YZ= 55 millimeters, what would be the length of QR? Millimeters
Answer:
30 mmStep-by-step explanation:
Hope it helpFor her birthday, Bonnie's parents gave her $5,425.00 which they put into a savings account that earns 15% interest compounded annually. When Bonnie started college, she withdrew the entire balance of $16,642.00 and used it to pay for tuition. How long was the money in the account?
Answer:
15% of $5425.00 = 5425 x- 15% = 813.75
$16,642.00 ÷ 813.75 = 20.3 = 20
So approx. 20 years
Step-by-step explanation:
In triangle XYZ, let angle Y be a right angle, mZ = 54°, and YZ = 361. Find the area of the
triangle. Round to the nearest whole number.
Answer:
89,709
Step-by-step explanation:
∡Z= 54°
tan 54 = XY / 361
XY = 361 · tan 54°
XY = 497
A = 1/2 (361) (497)
graph the equation y = -3x on a graph
Put a dot on the -3 from the y-axis and draw a straight line from left to right.
Ben is playing a card game. The numbers of the cards in his hand are 2, 3, 4, 4, 5, 7, 9, and 10. Ben may only play one card at a time.
What is the probability the next card Ben plays will be an odd number?
343 fourths
121 half
383 eighths
14
Answer: Half
Step-by-step explanation:
FIND PERIMETER HELP PLS
can somebody help me with these two please and thank you. :)
*UNIT RATE AND PROPORTIONS*
the price for 4 pound of ribs is $28.00
*QUESTIONS* *what is the unit rate?* *how much would 6pounds cost?*
*how many pounds can be bought for $70* NEED HELP ASAP‼️‼️
Answer:
Unit rate is $7 per pound.
6 pounds will cost $42
You can buy 10 pounds for $70
Step-by-step explanation:
28/4 = $7 --> Unit rate is $7 per pound.
7 × 6 = $42 --> 6 pounds will cost $42
70/7= 10 --> You can buy 10 pounds for $70
cost
I-cost
I-cost
I cost
= 4 cost cact
verify
Answer:
yes
Step-by-step explanation:
PLZ!!!!!!!!!!!! Answer quickly
find range, domain, asymptote, and y-intercept of the equation f(x)=5^x
Answer:
i have no idea how to answer this
Step-by-step explanation:
it really works
What are the coordinates of point A?
Answer:
-4,-3
Step-by-step explanation:
Answer: I can't see the 4th answer but i and going to guess it's (-4,-3).
I think you answer is D. (-4,-3).
I hope it's right
Complete the table for the given rule.
Rule: y = x + 3
у
5
Answer:
Step-by-step explanation:
x=y-3 this is your main formula to find x
first y=4-3=1 , x=1
second y=8-3=5 , x=5
third y=5-3=2, x=2
How to find the derivative of the below question?
Given:
[tex]y=\dfrac{x}{\sqrt{x-1}}[/tex]
To find:
The derivative of the given problem.
Solution:
Chain rule : [tex]\dfrac{d}{dx}f(g(x))=f'(g(x))\cdot g'(x)[/tex]
Quotient rule : [tex]\dfrac{d}{dx}\left(\dfrac{f(x)}{g(x)}\right)=\dfrac{g(x)f'(x)-f(x)g'(x)}{[g(x)]^2}[/tex]
We have,
[tex]y=\dfrac{x}{\sqrt{x-1}}[/tex]
Differentiating with respect to x using chain rule and quotient rule, we get
[tex]\dfrac{dy}{dx}=\dfrac{\sqrt{x-1}\dfrac{d}{dx}(x)-x\dfrac{d}{dx}(\sqrt{x-1})}{(\sqrt{x-1})^2}[/tex]
[tex]\dfrac{dy}{dx}=\dfrac{\sqrt{x-1}(1)-x\dfrac{1}{2\sqrt{x-1}}\dfrac{d}{dx}(x-1)}{(x-1)}[/tex]
[tex]\dfrac{dy}{dx}=\dfrac{\sqrt{x-1}-\dfrac{x}{2\sqrt{x-1}}(1-0)}{x-1}[/tex]
[tex]\dfrac{dy}{dx}=\dfrac{\sqrt{x-1}-\dfrac{x}{2\sqrt{x-1}}}{x-1}[/tex]
[tex]\dfrac{dy}{dx}=\dfrac{\dfrac{2x-2-x}{2(x-1)^{\frac{1}{2}}}}{(x-1)}[/tex]
[tex]\dfrac{dy}{dx}=\dfrac{x-2}{2(x-1)^{\frac{3}{2}}}[/tex]
Therefore, the required derivative is [tex]\dfrac{dy}{dx}=\dfrac{x-2}{2(x-1)^{\frac{3}{2}}}[/tex].
