Li tried to evaluate an expression step by step. Find Li's mistake. What is the mistake he made. Is it A:step 1, B:step 2, C:step 3 or D: Li did not make a mistake ???
Answers
Answer: C Step 3
Step-by-step explanation: I passed
Related Questions
Fill in the table using this function rule.
y = -3x+5
x:
-4
-2
0
2
Answers
Answer:
x=5/3 or 2
Step-by-step explanation:
y-8= - * - 4
y=-*
4
(3,-5)
no solution
an infinite number of solutions
Answers
Given:
The system of equation is
[tex]y-8=-\dfrac{1}{3}x-4[/tex]
[tex]y=-\dfrac{1}{3}x-4[/tex]
To find:
The solution of given system of equations.
Solution:
The slope intercept form of a line is
[tex]y=mx+b[/tex]
Where, m is slope and b is y-intercept.
Write the given equation in slope intercept form.
The first equation is
[tex]y-8=-\dfrac{1}{3}x-4[/tex]
[tex]y=-\dfrac{1}{3}x-4+8[/tex]
[tex]y=-\dfrac{1}{3}x+4[/tex] ...(i)
Here, slope is [tex]-\dfrac{1}{3}[/tex] and y-intercept is 4.
The second equation is
[tex]y=-\dfrac{1}{3}x-4[/tex] ...(i)
Here, slope is [tex]-\dfrac{1}{3}[/tex] and y-intercept is -4.
Since the slopes of both lines are same but the y-intercepts are different, therefore the given equations represent parallel lines.
Parallel lines never intersect each other. So, the given system of equation has no solution.
Hence, the correct option is B.
what is the ratio for the
Answers
Answer:
15/17
Step-by-step explanation:
the cosine is the adjacent divided by the hypotenuse. The adjacent of a is 15 and the hypotenuse is 17 so the ratio is 15/17
Hope this helps and have a good day :)
Jason has 1/3 of a liter of milk. Jason divides the milk equally into 4 mugs of tea.
How much milk will Jason have in each mug?
Answers
Answer:
1/12 l
Step-by-step explanation:
Amount of milk = 1/ 3 l
No: of mugs = 4
Amount in each mug = 1/3 ÷ 4 = 1/3 x 1/4 = 1/12 l
(Hope its right!)
Answer:
They will have 1/12 of a liter of milk on each mug because you are dividing 1/3 into 4 so the denominator is multiplied by 4
please help, it's due in less then 30 minutes :')
Answers
Answer:
The answer is b. the range of Greta's graph is y<0
Step-by-step explanation:
-2 (x) = -2 ( x-14)
Answers
Answer:
There are no solutions.
Step-by-step explanation:
−2x=−2(x−14)
-2x=(−2)(x)+(−2)(−14)
-2x=−2x+28
-2x+2x=−2x+28+2x
0= 28
please do ALL 3 will give brainliest!! and a surprise!!!
Answers
Answer:
a) -2.5x+3.9+1.7x
circle: 2.5x and 1.7x
variables: x
b) 1 1/2+t+2/3s
no like terms
variables: s and t
c) 15k+2/3k+3m
circle: 15k and 2/3k
variables: k and m
plzzzzz guys help emergency plz really I got problem
if you do jpt then I will report
Answers
Answer:
[tex]let \: their \: points \: of \: intersection \: be \to \: x \\ since : \\ \: \overline{MN} \: intersects \: \overline{QL} \: at \: point \: x : \\ and\\ \overline{QL} \: also \: meets \: \overline{MN} \: at \: point \: x : \\ hence \: \overline{QL}\: and \: \overline{MN} \: bisects \: each \: other.[/tex]
Solve the simultaneous equations
2y - 5x = 9
4y + 3x = 5
Do not use trial and improvement
Answers
Answer:
y = 2, x = -1
Step-by-step explanation:
2y - 5x = 9
2y = 9+5x
y = (9+5x) /2
4y + 3x = 5
4((9+5x) /2) + 3x = 5
13x + 18 = 5
13x = -13
x = -1
y = (9+5x) /2
y = (9+5(-1)) /2
y = 2
Answer:
x = -1, y = 2
Step-by-step explanation:
2y - 5x = 9
4y + 3x = 5
eliminate one of the variables by multiplying the equations and then adding them together.
3(2y - 5x = 9)
5(4y + 3x = 5)
6y - 15x = 27
20y + 15x = 25
26y = 52
y = 2
now input the value of y into one of the original equations to find x.
8 + 3x = 5
8-5 = 3
x = -1
How do you make comparisons between an equation and a verbal description?
Answers
Answer:
equtions have mathematical signs and descritions are like riddles and you have to figure out the operation
Step-by-step explanation:
When The equations have mathematical signs and also descriptions are like riddles. Then we have to figure out the operation.
What are Equation and Verbal descriptions?Equation Verbal description
y = T-shirts are being
1.25x sold in a store for
$5.25 each.
A variable is a missive used to represent a value or unexplored quantity that can modify or vary in an expression or equation.
An utterance is a variety of variables, quantities, and mathematical functions; 4, 8 x, and b + 102 are all expressions.
An equation is an presentation set equal to another expression; a = 4, 1 + 23 = x + 9, and (2 + 3)1 = 2 c. are all equations. 1 3. 6. 1: Formation Processes from Context.
Find more information about Equation and Verbal descriptions here:
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Write the absolute vale of |3-5|
Answers
Answer:
2
Step-by-step explanation:
3-5 = -2
absolute value of -2 is 2.
The measure of angle Y is 45°, and the measure of angle Z is 70°.
Z
W
Y
What is the measure of angle W?
25°
65°
1150
120°
Answers
Answer:
115 degrees
Step-by-step explanation:
We know that angle y is 45 degrees and angle z is 70 degrees so to find x, you do 180-45-70 to get 65 degrees.
Because W plus X has to equal 180 degrees, 180-65=115, so the answer is 115 degrees
Answer:
choice 3) W = 115 degrees
Step-by-step explanation:
all triangle interior angles add up to 180 degrees
180 = 45 + 70 + X
X = 65 degrees
Angle W is supplemental to angle X (angle W and angle X add up to 180 degrees.)
W = 180 - 65 = 115 degrees
What type of triangle has exactly 2 equal sides and one right angle?
isosceles triangle
right isosceles triangle
obtuse isosceles
right triangle
Answers
Answer:
Right isosceles triangle
Step-by-step explanation:
I took the quiz and got it wrong, but it told me the correct answer
A right isosceles triangle has exactly 2 equal sides and one right angle.
Given that, a triangle has exactly 2 equal sides and one right angle.
Isosceles triangle: An isosceles triangle is a triangle that has two sides of equal length.
Right isosceles triangle: An isosceles right triangle is defined as a right-angled triangle with an equal base and height which are also known as the legs of the triangle.
Obtuse isosceles: An isosceles obtuse triangle is a triangle in which one of the three angles is obtuse (lies between 90° and 180°), and the other two acute angles are equal in measurement.
Right triangle: A right triangle is a triangle in which one angle is 90°.
Hence, right isosceles triangle has exactly 2 equal sides and one right angle.
To learn more about an isosceles triangle visit:
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what is 150 times 100
Answers
Answer:
100×150
it's the answer
Tell whether (3,5) is a solution of y = 5x – 10.
Answers
Answer:
yes it is
Step-by-step explanation:
plug x and y in
3 * 5 - 10 = 5 <== And this is true
Answer:
The answer would be yes.
A game is considered "fair" if the player can expect to win $0.
Which is a fair game?
A Game A
cost to play: $1
prize: $5
probability of winning: 0.2
Game C
cost to play: $3
prize: $20
probability of winning: 0.1
B Game B
cost to play: $2
prize: $10
probability of winning: 0.3
Game D
cost to play: $4
prize: $10
probability of winning: 0.5
Answers
Answer:
eeuu
Step-by-step explanation:
dijud
cost to play: $4
prize: $10
probability of winning: 0.5
Step-by-step explanation:
Malaya is following this recipe for bread rolls.
She uses 400 g of flour.
How much of the other ingredients does she use?
Recipe: Makes 14 bread rolls
700 g flour
14 g salt
7 g yeast
35 mL oil
420 mL water
Answers
Answer:
Step-by-step explanation:
400/700 = 4/7
salt: 4/7 × 14 g = 8 g
yeast: 4/7 × 7 g = 4 g
oil: 4/7 × 35 mL = 20 mL
water: 4/7 × 420 mL = 240 mL
if 15 of the 1001
cars in a parking
lot are white,
how many cars
are white?
Answers
Answer:
15...
Step-by-step explanation:
Is this the full question?
I guess the question is somewhat incomplete. Please check and post again.
1. The height of a missile t seconds after it has been fired is given by h=4.9t^2+44.1t. How many seconds will it take for the rocket to reach its greatest height?
Answers
Answer:
The rocket will take 4.5 seconds to reach its maximum height.
Step-by-step explanation:
The height of a missile t seconds after it has been fired is given by h=-4.9*t²+44.1*t
This function is a quadratic function of the form f (x) = a*x² + b*x + c. In this case a=-4.9, b=44.1 and c=0
To calculate how many seconds it will take for the rocket to reach its maximum height, I must calculate the maximum of the function. The maximum of a quadratic function is the vertex of the parabola. The x coordinate of the vertex will be simply: [tex]x=\frac{-b}{2*a}[/tex]. The y coordinate of the vertex corresponds to the function evaluated at that point.
In this case the x coordinate of the vertex corresponds to the t coordinate. In other words, by calculating the x coordinate of the vertex, you are calculating the maximum time t it will take for the rocket to reach its maximum height. So:
[tex]t=\frac{44.1}{2*(-4.9)}[/tex]
t=4.5
The rocket will take 4.5 seconds to reach its maximum height.
Antonio has a bag of mixed candies. He has 5 green, 7 yellow, and 4 red. What is the probability that Antonio will pick a yellow candy?
Answers
Answer: 43.75%
Good Luck!
Complete the statement. Round to the nearest hundredth if necessary.
15 lb ≈ ? kg
Answers
Answer:
6.82 kg
Step-by-step explanation:
set up a proportion based on 2.2 lbs in 1 kg
2.2/1 = 15/x
cross-multiply:
2.2x = 15
x = 6.82
The value of 15 lb in kg is 6.81 kg.
What is Multiplication?To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
We know that;
⇒ 1 lb = 0.454 kg
Hence, We get;
⇒ 1 lb = 0.454 kg
⇒ 15 lb = 15 × 0.454 kg
= 6.81 kg
Thus, We get;
⇒ 15 lb = 6.81 kg
Learn more about the multiplication visit:
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Will get brainliest if correct
Answers
Answer: 119°
Step-by-step explanation:
∠FAE + ∠CAF = ∠BAD (Vertical angles)
62° + 57° = 119°
∠BAD = 119°
PLEASE HELP I NEED THIS BEFORE 8:00 pm
Answers
Answer:
y = -27
Step-by-step explanation:
-3 * 3 = -9 * 2 = -18/9 = -27
Answer:
The answer is Y=-27
Step-by-step explanation:
Hope this helped
someone actually help please!!! how much is 7/9 of -3/14
Answers
Answer:-0.16666666666
Step-by-step explanation:
Helpppppppp helpppppppp
Answers
Answer:
D
Step-by-step explanation:
divide the fraction lol
Answer:
D
Step-by-step explanation:
gchchchxhccydhdjchhxxhxchxxhbddbxbdbhdxh
If 16 units of chlorine are needed for every 1250 gallons of water. How many units of chlorine are needed for 625 gallons of water? a. 12 units b. 10 units c. 8 units d. 5 units
Answers
Answer:
8 :)
Step-by-step explanation:
Please help slope!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
It is -1/6 so ye hope this helps
For which of the following is x = 5 NOT a solution
(a) 12 + 3x = -15
(b) 2x − 6x = -20
(c) 18 = 13 + x
(d) -4x = x − 25
Answers
Answer:
A) x= -9
B) x=5
C) x=5
D) x=5
Step-by-step explanation:
12 + 3(5) = -15
12 + 15 = -15
27 = -15
0 = -42
this is incorrect, making A your answer.
hope this helps!
Linda and Philip share £54 in the ratio 4:5. Find how much money each of them will recieve
Answers
Answer:
Linda has £24 and Philip has £30.
Step-by-step explanation:
Denote a variable to the amount of money Linda and Philip have:
Money Linda has = L
Money Philip has = P
L + P = 54
There is a ratio of 4:5 so for every £4 Linda has, Philip will have £5. When adding both values, 4+5, you get 9.
Divide the total amount of money by the sum of the ratio numbers so 54/9 which gives 6.
Multiply the number you get from the division by their respective ratios.
Linda = 6 * 4 = 24
Philip = 6 * 5 = 30
Add both numbers if you want to make sure the answer is correct.
Cassie simplified the composed function f(x)= cot(arcsin x). Her work is shown below.
In which step did Cassie make her first error?
step 1
step 2
step 3
step 4
She didn't make any errors
Answers
Answer:
1. C
2. A
3. A
4. D
Step-by-step explanation:
