For every 21 liters of petrol a car can run for 80 km- 58.2 liters of petrol would be required to ensure the car has enough petrol of a trip that is 224 km unitary method
It is provided that to run 80km car requires 21 liters of petrol
To know how much petrol is required for a trip of 224 km, we first would require to know how much petrol is required to run 1 km
This is called unitary method
Petrol required by car to run 1 km would be petrol required by car to cover 80kms of distance divided by 80 km of distance = 21 liters of petrol/ 80 km distance
= 21/80
=0.26 liters
So, petrol required by car for a trip of 224 km= 0.26 liters ×224km
= 0.26× 224
= 58.24 liters
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how to factorise 3x + 6
Answer:
it is 3(x+2)
Answer:
3(x+2)
Step-by-step explanation:
You first find the common factor.
3x+6
3(x+2) solution.
Bo kept track of his cookie sales. He
discovered that 3 out of 5 people who
came into his bakery for cookies bought
chocolate chip cookies.
If 400 customers bought cookies at Bo's
Bakery last month, how many of them
bought chocolate chip cookies?
Answer:240
Step-by-step explanation:
400/5 = 80
80 x 3 = 240
240/400 people bought choc chip
HELP!!! Describe the distribution of points per game
Definition: n math, a graph can be defined as a pictorial representation or a diagram that represents data or values in an organized manner.
Given,
Points scored per game by 35 NBA players during the 2017 basketball season.
Context: Points scored per game by 35 NBA players
Shape: dotted, no gaps
Outliers: none
Center: 14(Median)
Spread: Data varies from somewhere between (12-14) to somewhere between (24-26)
context is about the graph
shape is about the representation
outliers is whether any point is farther
center is the median
spread is till where the graph is extended with gaps in between
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The midpoint of AB is M(-6, 4). If the coordinates of A are (-7, 2), what are the
coordinates of B?
The coordinates of B is (-5, 6).
In geometry, a coordinate system is a system that uses one or more numbers, or coordinates, to uniquely determine the position of the points or other geometric elements on a manifold such as Euclidean space
What is section formula ?
The section formula helps in determining the coordinates of a point which facilitates division of the line joining two points in a ratio. This takes place either internally or externally.
P (x, y)= (c*m + a*n)/(m + n) , (d*m + b*n)/(m + n ).
Given:
let the coordinates of B (x, y)
M is midpoint M(-6,4) and coordinates of A are (-7, 2)
Using section formula
-6 = (x -7)/2
-12 = x -7
x = -5
and, 4 = y+2/2
8 = y+2
y = 6
Hence, the coordinates of B is (-5, 6)
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What is the length of the line segment that joins
points (4, -1) and (7,5)?
A. 5 B. √13
C. √29 D. √45
Answer:
5 is the answer to that question
Answer:
D. √45
Step-by-step explanation:
(4, -1) (7, 5)
(x₁, y₁) (x₂, y₂)
d = √(x₂ - x₁)² + (y₂ - y₁)²
d = √(7 - 4)² + (5 - (-1))²
d = √(3)² + (6)²
d = √9 + 36
d = √45
I hope this helps!
Using the pencil,plot the point (-3,-6)
Answer:
-3 will be on the -x axis n the -6 will be on the -y axis so both will meet at a point.
Step-by-step explanation:
that is all I understand am not sure if I am ryt
Convert the following ratios into percentages.
2:3
Answer:
66%
Step-by-step explanation:
Answer:
66 %
Step-by-step explanation:
It is 66 % because to convert you have to follow these steps
Step 1: Identify the ratio.
Step 2: Express the ratio a:b in the form of a fraction a/b.
Step 3: Multiply the fraction by 100.
Step 4: Simplify and write the answer with the percent symbol (%).
Two factory plants are making TV panels. Yesterday, Plant A produced 4 times as many panels as Plant B. Three percent of the panels from Plant A and 2% of the panels from Plant B were defective. How many panels did Plant B produce, if the two plants together produced 980 defective panels?
Answer:
7000 panels.
Step-by-step explanation:
Let x be the number of panels produced by Plant B.
Therefore:
4x = number of panels produced by Plant A.x = number of panels produced by Plant B.Given information:
Defective panels from Plant A = 3%Defective panels from Plant B = 2%Total number of defective panels = 980Create an equation with the given information and defined variables, remembering to write the percentages in their decimal form:
[tex]\implies 0.03(4x) + 0.02x = 980[/tex]
To find the number of panels Plant B produced, solve the found equation for x:
[tex]\implies 0.03(4x) + 0.02x = 980[/tex]
[tex]\implies 0.12x + 0.02x = 980[/tex]
[tex]\implies 0.14x = 980[/tex]
[tex]\implies \dfrac{0.14x}{0.14} = \dfrac{980}{0.14}[/tex]
[tex]\implies x=7000[/tex]
Therefore, Plant B produced 7000 panels.
HELP WITH NUMBER 5 FOR 20 POINTS
Answer:
5
Step-by-step explanation:
that is hte anwers
2. Consider the graph of y = f(x) below.
YA
F
14
/2 -1 0
-1+
+
1 2
(a) Find all values for which f(x) is discontinuous.
(b) For each point in (a), describe where the 3-part definition fails.
(c) Classify each discontinuity as jump, removable, or infinite.
Answer:
Step-by-step explanation:
31
Can someone please help me. This is about indices
Answer:
x = 10/9
Step-by-step explanation:
Solve:
27^(3x-2) = 81
When solving equations in exponential form make sure the two bases on both sides are the same.
3^3(3x-2) = 3^4
Once the two bases are the same you cancel them out and used its exponent to solve the equation.
3(3x-2) = 4
9x-6 = 4
Add 6 to both sides.
9x-6+6 = 4+6
9x = 10
Divide both sides by 9.
x = 10/9
Therefore x = 10/9.
An herbalist has 50 oz of herbs costing $4 per ounce. How many ounces of herbs costing $1 per ounce should be mixed with these 50 oz of herbs to produce a mixture costing $2.50 per ounce?
The ounces of herbs costing $1 per ounce that should be mixed with these 50 oz of herbs to produce a mixture costing $2.50 per ounce?
is 50 ounces.
How to illustrate the information?Let x = the amount of herb that costs $1 per ounce.
Based on the information,the total weight will be:
x + 50 = y.
At $2.50, the cost of the mixture will be:
1x + 4(50) = 2.50y
x + 200 = 2.50y
x + 200 = 2.50(x + 50)
x + 200 = 2.50x + 125
Collect like terms
2.5x - x = 200 - 125
1.5x = 75
Divide
x = 75/1.5
x = 5.
Therefore, the correct option is 50
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enter the sum of numbers as a product of their GCF
15 + 90
Answer:
15+90=3×18
Step-by-step explanation:
GCF= 5
Sara has a rectangular shaped backyard. The backyard is 22.5 feet wide and 35.75 feet long. What is the area of the rectangular backyard?
The area of the rectangular backyard is 804.37
How to calculate the area of the rectangle ?
The area of a rectangle can be calculated by multiplying the length and the width
Area= length × width
Length= 35.75 feet
Width= 22.5 feet
Area= 35.75 × 22.5
= 804.37
Hence the area of the rectangular backyard is 804.37
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Trey Invested his savings in two Investment funds. The $12,000 that he invested in Fund A returned a 1% profit. The amount that he invested in Fund B returned a 6% profit. How much did he invest in Fund B, if both funds together returned a 3% profit?
The amount Trey invested in Fund B is $8,000.
Profit is a residual income, It is the gain amount from any kind of business activity. In short, if the selling price (SP) of the product is more than the cost price (CP) of a product, then it is considered as a gain or profit. while return is a total revenue. Profits may be negative, whereas returns, such as wages and interest are always positive.
amount invested in Fund A = $12,000 (given)
profit returned by Fund A = 1% of $12,000 (given)
= 1/100*$12,000
= $120
Let amount invested in Fund B = x (assumption)
profit returned by Fund B = 6% of x (given)
= 6/100*x
= $ 6x/100
Given that both funds A and B together returned a 3% profit, So the equation we get is
120+6x/100 = 3% of (12,000+x)
(12,000+6x)/100 = 3/100* (12,000+x)
12,000+6x = 3(12,000+x)
12,000+6x = 36,000+3x
6x-3x = 36,000-12,000 (bringing like terms on same side)
3x = 24,000
x = 24,000/3
x = $8,000
Therefore, we can conclude that the amount Trey invested in Fund B is $8,000
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Sixty-one percent of employees make judgements about their co-workers based on the cleanliness of their desk. You randomly select 8 employees and ask them if they judge co-workers based on this criterion. The random variable is the number of employees who judge their co-workers by cleanliness. Which outcomes of this binomial distribution would be considered unusual?
The unusual outcomes for the binomial distribution are given as follows:
0 or 1 employee making judgements.
What is the binomial probability distribution?It is the probability of exactly x successes on n repeated trials, with p probability of a success on each trial.
The expected value of the binomial distribution is:
E(X) = np
The standard deviation of the binomial distribution is:
[tex]\sqrt{V(X)} = \sqrt{np(1-p)}[/tex]
In the binomial distribution, a measure is considered unusual if it is more than 2.5 standard deviations from the mean.
For this problem, the parameters are given as follows:
n = 8, p = 0.61.
Hence the mean and the standard deviation are given by:
E(X) = np = 8 x 0.61 = 4.88.[tex]\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{8(0.61)(0.39)} = 1.38[/tex]The bounds of usual outcomes are:
4.88 - 2.5 x 1.38 = 1.43.4.88 + 2.5 x 1.38 = 8.33.Hence outcomes of less than 1 employee making judgements would be unusual.
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You have four cards: Jack, Queen, King, and Ace. What is the probability of drawing a face card, not replacing it, and then choosing another face card?
Write in fraction form!
Step-by-step explanation:
if I understand you correctly, then we have the 4 described cards. 3 of these 4 cards are face cards (Jack, Queen, King).
a probability is always desired cases over totally possible cases.
so, for the first pull we have a probability of
3/4 = 0.75
we have 4 total possibilities, and 3 of them are the desired outcome.
for the second pull we have then only 3 cards left (we did not replace the first pulled card). and because the first pulled card was in this scenario a face card, 2 out of these 3 cards are face cards.
so, the probability to pull a face card here is
2/3 = 0.66666...
when we combine these 2 events into one connected event (we are creating event 1 AND event 2), we multiply the probabilities, giving us
3/4 × 2/3 = 6/12 = 1/2 = 0.5
Which numbers are irrational?
A. √30
B. √16
C. √42
D. √169
Select all that apply.
Select the correct answer form each drop-down menu.
Given: m/WOZ = 90°
Prove: m/WOX = 90°
X
W
N
Complete the proof.
Suppose m/WOX # 90°. By the
✓ZWOXis supplementary to ZWOZ. Therefore,
m/WOX + m/WOZ = 180°. By the assumption and the substitution property of equality. 90° +m/WOZ 180°. Using the
subtraction property of equality, the measure of angle WOZ
✓90°, which contradicts the given. Therefore, the
assumption is not true, and m/WOX = 90°.
4
Reset
Next. Answer?
The complete proof are;
Suppose m ∠WOX ≠ 90°. By the definition of linear pair of straight line ∠ WOX is supplementary to ∠WOZ.
Therefore, m ∠WOX + m ∠WOZ = 180°.
By the assumption and the substitution property of equality.
90° + m ∠WOZ = 180°.
Using the subtraction property of equality, the measure of angle WOZ is equal to 90°, which contradicts the given.
Therefore, the assumption is not true and m ∠WOX = 90°.
What are Supplementary angles?
The two angles are called supplementary angles when sum of both angles are 180 degree.
Given that;
m ∠WOZ = 90°
Now, The proof of m ∠WOX = 90° is given as;
Suppose m ∠WOX ≠ 90°.
By the definition of linear pair of straight line ∠ WOX is supplementary to ∠WOZ.
Therefore,
⇒ m ∠WOX + m ∠WOZ = 180°.
By the assumption and the substitution property of equality.
⇒ 90° + m ∠WOZ = 180°.
Using the subtraction property of equality, the measure of angle WOZ is equal to 90°, which contradicts the given assumption.
Therefore, The assumption is not true and m ∠WOX = 90°.
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8^6x8^9= ?
64^15
64^3
8^15
8^54
Answer:
[tex]8^{15[/tex]
Step-by-step explanation:
Hello!
Use exponent rule: [tex]a^b * a^c = a^{b + c}[/tex]
Use the rule to simplify the exponential expression.
Simplify[tex]8^6 * 8^9[/tex][tex]8^{6 + 9}[/tex][tex]8^{15[/tex]The simplified form is [tex]8^{15[/tex].
A party planner purchased roses to decorate tables for an event. There were 15 tables and 5 roses were placed on each table. If the roses were $1.98 each, how much did the party planner spend on roses?
A. $148.50
B. $29.70
C. $9.90
D. $75.00
Answer: 148.50
Step-by-step explanation:
15*5=75
75*$1.98=$148.50
The average donut weighs approximately 50 g, and has approximately
11,000 mg of sugar. How much sugar is in three donuts? Answer in g.
Answer:
33 g
Step-by-step explanation:
the weight of the donut is a distractor number. if each donut has 11,000 mg of sugar, then 11,000 x 3 = 33,000 mg. In order to convert mg into g, we move the decimal over to the left 3 times.
33000. (0 times)
3300.0 (1 time)
330.00 (2 times)
33.000 (3 times)
Which of these questions is most likely to result in response bias?
OA. "What do you think of this dress?"
OB. "What is your opinion of this dress?"
O C. "How do you like this beautiful dress?"
OD. "How do you feel about this dress?"
Answer: C
Step-by-step explanation:
Options A, B and D are all unbiased since there is nothing in the question taht could nudge you into a specific thought, but in option C, they specifically call it beautiful to put it in your mind and you will be more likely to call the dress beautiful compared to anything else.
Write the equation of the line with slope 35 that passes through point (0,−3).
Answer:
[tex]y = 35x - 3[/tex]
Step-by-step explanation:
Based on the given conditions
[tex]m = 35[/tex]
Substitute and calculate
Substitute:
[tex]m = 35 \\ x = 0 \\ y = - 3[/tex]
Into:
[tex]y = mx + b[/tex]
Therefore, the equation of the line is:
[tex]y = 35x - 3[/tex]
Evaluate the expressions when x = 3; y = 4 & z = -2
(x + y) * z, 2y + 3z + 4y - xz =
comma = separate
Answer:
Sub in the numbers given to x, y, z and use calculator to solve
How do you write 0.00007112 in scientific notation?
Answer:
7.112 x [tex]10^{-5}[/tex]
Step-by-step explanation:
You need to re-write the number so that it is 1 or larger but less than 10. To do that, we need to move the decimal 5 spaces to the right. The actually number is smaller. The [tex]10^{-5}[/tex] is telling me how much smaller the number actually is. To get the number in standard notation I would have to take 7.112 and divide it by 100,000.
Find x for this equation
Show clear algebraic fraction
Answer:
x = [tex]\frac{8}{3}[/tex]
Step-by-step explanation:
[tex]\frac{2}{5x-2}[/tex] = [tex]\frac{3}{6x+1}[/tex] ( cross- multiply )
3(5x - 2) = (2(6x + 1) ← distribute parenthesis on both sides )
15x - 6 = 12x + 2 ( subtract 12x from both sides )
3x - 6 = 2 ( add 6 to both sides )
3x = 8 ( divide both sides by 3 )
x = [tex]\frac{8}{3}[/tex]
The line y = kx + 4 goes through the point (2, -2). Find the value of k.
k = -3 is the value in straight line.
What is straight line?
Simply put, a straight line is a line devoid of bends. A straight line is one that does not curve and reaches to infinity on both sides.
Different type
Horizontal Line Horizontal Lines.Crossing Lines.Lines that are parallel.On putting the values of the point in the equation of line, the value of X = 2 and Y = -8
When a line passes through a point, the point satisfies the equation of the line.
The line y = kx + 4 goes through the point (2, -2)
So, ( 2 , -2 ) must satisfy the equation of the line.
Put x = 2 y= - 2 in equation y = kx + 4
-2 = k * 2 + 4
- 2 = 2k + 4
-2 -4 = 2k
-6 =2k
k = -6/2
k = -3
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Bob invested his savings in two investment funds. The amount he invested in Fund A was $8000 less than the amount he invested in Fund B. Fund A
returned a 2% profit and Fund B returned a 7% profit. How much did he invest in Fund B, if the total profit from the two funds together was $1730?
a = amount invested at 2%
how much is 2% of "a"? (2/100) * "a", namely 0.02a.
b = amount invested at 7%
how much is 7% of "b"? (7/100) * "b", namely 0.07b.
We know that fund A is less than fund B by 8000, that is a = b - 8000.
we also know that the yielded amount in interest is $1730, so if we simply add their interest, that'd be 0.02a + 0.07b = 1730.
[tex]\boxed{a = b - 8000} \\\\\\ 0.02a~~ + ~~0.07b~~ = ~~1730\implies 0.02(\stackrel{a}{b-8000})~~ + ~~0.07b~~ = ~~1730 \\\\\\ 0.02b-160+0.07b=1730\implies 0.02b+0.07b=1890\implies 0.09b=1890 \\\\\\ b=\cfrac{1890}{0.09}\implies \blacksquare~~ b=21000 ~~\blacksquare[/tex]
A plane climbs from an altitude of 6000 ft to a cruising altitude of 39,000 ft. The plane ascends at a rate of 6600 ft/min. How long will it take to reach cruising altitude?
The time taken to ascend from the initial height to the final height; Time taken = 5 minutes
What is the time taken?We are given;
Initial Height = 6000 ft
Final height = 6600 ft/min
Speed = 6600 ft/min
Now, the time taken to ascend from the initial height to the final height;
Time taken = (39000 - 6000)/6600
Time taken = 5 minutes
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