Answer:
Step-by-step explanation:
A bag contains yellow and blue blocks in the ratio 1:3
Sum of Proportion = 1 + 3 = 4
There are 8 more blue blocks than yellow blocks.
b = y + 8
y = b - 8
(a) How many yellow blocks are there?
For yellow block
= 1/4 × x = ( b - 8)
(b) How many blue blocks are there?
3/4 × x = ( y + 8)
3(x-4)+3=9
Who Can do this Linear equation
Answer:
x=6
Step-by-step explanation:
i used an app called math-way hope this helps.
Answer:
x = 6
Step-by-step explanation:
3(x-4) + 3 = 9
3x - 12 + 3 = 9
3x - 9 = 9
3x = 9 + 9
3x = 18
x = 6
What inequality does the number line graph represent?
Answer:
3
°•°°•••°°•••••••••°•○○○●••
How do you do this?
Answer:
78 degrees
Step-by-step explanation:
We know that these triangles are congruent
Angle N is the same as angle W since the triangles are congruent
Angle N = 78 degrees
Therefor angle W = 78 degrees
Find the sum of the first 24 terms in the following arithmetic
series:
9+13+17+21+..
Answer:
1212
Step-by-step explanation:
can someone help me i need to find the value of x that will make a||b
X= 54
hope it helps
The manager at a grocery store took a survey to determine the price of milk at 10 other stores in the area. The prices are shown in the table.
$2.99
$3.19
$3.29
$2.99
$3.19
$2.79
$2.89
$2.99
$2.99
$2.99
The price of milk at another grocery store is $4.49. What does this outlier do to the data?
A.
It increases the median.
B.
It increases the mode.
C.
It skews the data to the right.
D.
It decreases the interquartile range.
Answer:
C it skews the data to the right
Step-by-step explanation:
When we add the outlier $4.49, the two true options are A and C.
What does this outlier do to the data?
First, we have the set of data:
{$2.99, $3.19, $3.29, $2.99, $3.19, $2.79 ,$2.89, $2.99, $2.99, $2.99}
If we add the outlier $4.49, the median increases (because the value added is on the larger side).
The mode does not change, as it is the value that appears the most times, which in this case is $2.99.
Notice that again, $4.49 is the largest value of the data set. So it would skew the data to the right (the largest values are on the right side).
Then the correct options are:
A and C.
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1. By selling an article at N600.00, a
trader makes a profit of 20%. Find the
cost price.
Answer:
500
Step-by-step explanation:
SP = 600.00
profit= 20%
SP = CP + 20% of CP
or, 600.00 = CP + 20/100 × CP
or, 60000= 120CP
or, CP = 60000/ 120
CP = 500
6.
Which expression is equivalent to
4x +3 - 3x + (-2)?SHOW WORK
Answer:
x + 1
Step-by-step explanation:
no way number three?!
Padma makes two investments of $700 each for a term of 1 year, where investment A is linear and will increase at a constant rate of change, while investment B is exponential will increase by a common ratio.
Answer:
See the explanation below
Step-by-step explanation:
Given data
Amount invested= $700
Time = 1 year
Say the percent increase for both investments is
The representation of the linear investment A is given by the linear function
y=mx+c
here m= the percent increase
x= the time taken and
c= the invested amount
By linear increase, any increment in x that is the time will lead to a corresponding increase in the y value which is the final amount
The representation of the exponential investment A is given by the linear function
y=ab^x
here a= the invested amount
b= the rate
x= the time
By exponential increase, any increment in x that is the time will lead to a "non-compliant"/ non-corresponding increase in the y value which is the final amount
Find each product of the equation. I need help please
Answer:
1. 15x-10
2. x²-x-12
3. x²-8x+12
4. 2x³+4x²-30x
5. 6x³- 12x²+6x
6. 4x³+12x²-20x
Step-by-step explanation:
4.2x(x+5)(x-3)
= 2x(x²-3x+5x-15)
= 2x(x²+2x-15)
= 2x³+4x²-30x
How do you find the radios and the height for this problem?
Answer:
radius=2, height=3
Step-by-step explanation:
diameter= 2x the radius therefore 4/2=2=radius
cylinder volume formula=πr^2h
volume=12π
height= v/πr^2=12π/π*2^2=12π/π*2^2=12π/4π=3
hope this helped!
Helpppppppppppppppppppppppppppppppppppppppppppppppp
Answer:
the answer is A
Step-by-step explanation:
A is the answer my dear
Alicia and Thea are in charge of determining the number of T-Shirt to order to sell in the school store. Each Student collected sampled data from the population of 300 students. Alicia surveyed 50 students in the cafeteria. Thea surveyed the first 60 students who arrived at school one morning. Use Alicia's data to estimate the number of T-Shirts they should order
Answer: 360
Step-by-step explanation:
Since we are informed from the question that Alicia surveyed 50 students in the cafeteria from the population of 300 students, it simply means that she surveyed 50/300 = 1/6 of the students.
Since Thea surveyed the first 60 students who arrived at school one morning, the number of T-Shirts taht they should order will be:
= 1/6 × x = 60
x = 60 × 6.
x = 360
They should order 360 t-shirts for the students.
Answer: Look at the explanation. Note that this is from the book.
Step-by-step explanation:
Alicia: 30/50 = x/30
x=180
They should order about 180 T-shirts.
Thea: 51/60 = x/300
x = 255
They should order about 255.
Note that we got the 300 from what the question said of the population being 300 students.
Hope this helps you!
If x=7 and y=−2, evaluate the following expression:7(2x−3y)
Answer:
140
Step-by-step explanation:
7(2x-3y)
7(2*7-3(-2))
7(14+6)
7(20)
140
The ratio of the corresponding sides of two similar squares is 1 to 4. What is the ratio of the area of the
smaller square to the area of the larger square?
1) 1:3
2) 1:9
3) 1:16
4) 1:25
Answer:
1:16
Step-by-step explanation:
The ratio of the sides of similar figures is actually called a scale factor. The ratio of the areas is the scale factor squared
scale factor= 1:4
ratio of areas=1^2:4^2
=1:16
always search up for more info
the model represents the equation - 3 =10. Which is the value of x in the equation x - 3 = 10?
Answer: C
Step-by-step explanation:
13-3=10
In a rhombus, an altitude from a vertex of an obtuse angle bisects to opposite side. Find het measures of the angles of the rhombus.
Answer:
The angles are : 30° , 90° , 60° and 120°
Step-by-step explanation:
In a rhombus the obtuse angles measure up to 120° while the acute angles measure up to 60°
In other to find the net measure of the angles
we will draw altitude from the vertex to form a right angled triangle and it will as well bisect the opposite side.
let the base of the right angled triangle ( opposite the obtuse angle ) = 1/2 x
side( hypothenuse ) of rhombus = x
sine = opposite / hypothenuse
hence sine x = 1/2 x / x
∴ sin x = 1/2
therefore to determine the value of x
sin^-1 ( x ) = sin^-1 ( 1/2 )
hence ; x = 30
given that the sum of the angles in a triangle = 180 . hence the third angle ( the acute angle ) = 180 - 90 - 30 = 60°
Given that the acute angle and the obtuse angle of a rhombus is supplementary
hence the value of the obtuse angle = 180° - 60° = 120°
What is 9/20 minuets 5/20
Answer:
I'm confused on what you're trying to ask
Answer:
[tex]\frac{9}{20} -\frac{5}{20} =\frac{1}{5}[/tex].
Step-by-step explanation:
When subtracting fractions with the same denominator, you keep the base the same and subtract the numerators. In this case, [tex]\frac{9}{20} -\frac{5}{20} =\frac{4}{20}[/tex], and [tex]\frac{4}{20}[/tex] can be simplified into [tex]\frac{1}{5}[/tex], so [tex]\frac{9}{20} -\frac{5}{20} =\frac{1}{5}[/tex].
HELPPPPPPPPPPP PLSSSSSSS URGENTTTTT PLS I ACTUALLY NEED HELPPPPP ILL MARK BRAINLIET ONLY IF YOU ACTUALLY HELP MEEQuestion 2 (2 points)
A survey asked 800 students to choose their favorite school subject. The results are shown in the table. Which of the options below is the better
representation of the portion of students who prefer math?
Favorite School Subject
Number of
Subject
Students
Science
224
Math
176
Literature
240
Social studies 160
O a
Oь
Oc
Both would be good representations of the portion of student who prefer math.
Neither would be good representations of the portion of student who prefer math.
Favorite School Subject
Social
studies
Science
28%
20%
Literature Math
30%
22%
Od
Favorite School Subject
250
Number of
students
150
100
50
0
Science
Math Literature Social
Answer:
C
Step-by-step explanation:
When you compare it to the other one it just looks better yk. I don't really have a fancy explanation for this, the pie chart just makes the numbers look more even.
All of the following are true of betas and correlation coefficients EXCEPT: Group of answer choices Both betas and correlation coefficients can tell you something about the strength of a relationship. Betas describe the relationship between two variables exactly as correlations coefficients do. Betas from an analysis can be compared with other beta coefficients from the same analysis just as correlation coefficients can. Both betas and correlation coefficients can tell you something about the direction of a relationship.
Answer:
yes look at the eslotp uudh
Both betas and correlation coefficients can tell you something about the direction of a relationship. The corect option is D.
What is coorelation coefficient?The coefficient of variation is a ratio which is used to show the level dispersion of values or treatments around the mean of a set of values.
The coefficient of variation is the ratio of the standard deviation to the mean of a set of numbers or treatments. The higher the coefficient of variation the higher the dispersion from the mean.
The coefficient of variation is the best measure of risk for an isolated single asset. Beta is the a measure of how volatile a particular stock is compared to the market.
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13 Calculate circumference of the circle. ( use t = 3.14) r=41 cm
Answer:
257.48 cm
Step-by-step explanation:
circumfrence of circle = 2*pi*radius
2 *3.14*41
257.48 cm
don't forget the unit
Which of the following is a true statement based on the graph shown ?
Answer: I feel like it's the last one
Step-by-step explanation: ahhh I could be wrong I've had this problem before and I'm certain I chose the last one but I could be wrong if I'm wrong then I'm very sorry
Whoops i dont know how to undo a question
3. Robin drove 80 miles in 1.6 hours.
At what rate was Robin driving?
A 80 miles per hour
B 70 miles per hour
C 65 miles per hour
D 50 miles per hour
Answer quick plzzz no website
Answer:
The answer is 50 miles per hours.
Mrs.Ramirez worked with her personal trainer to help develop a nutrition plan. The circle graph shows the recommended percentages for her daily intake. If she will start week 1 eating 1,800 calories, then how many should be from proteins?
Daily food intake:
Fruit: %15
Grains: %15
Protein: %35
Dairy: %10
Vegetables: %25
Answer choices:
A.450
B.350
C.630
D.270
(Please help!)
Answer:
C
Step-by-step explanation:
[tex]\frac{35}{100}*1800\\35*18\\[/tex]
630
The portion of protein will be 630.
What is pie chart?The “pie chart” is also known as a “circle chart”, dividing the circular statistical graphic into sectors or sections to illustrate the numerical problems.
Given that a pie chart showing the distribution of the calories of 1800 in different nutrients, we need to find the portion of protein,
Here the portion of protein = 35%
So,
35 / 100 × 1800 = 630
Hence the portion of protein will be 630.
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2. Which equation represents a line that passes through the points (4, 5) and (6, 9)?
Answer:
y=2x-3
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(9-5)/(6-4)
m=4/2
m=2
y-y1=m(x-x1)
y-5=2(x-4)
y=2x-8+5
y=2x-3
Solve this system by elimination 5x=y+6;5x+2y=3
Answer:
5x-6=y
5x+2(5x-6)=35x+10x-12=3 15x=15 x=1Now
5(1)-6=y -1=yHELPPPPPPPPPPPPPPPPP
Answer:
x=25
Step-by-step explanation:
155-(90+65)=x
Answer:
x = 25
Step-by-step explanation:
The sum of interior angles in a triangle is equal to 180
The given is a right triangle
which means one of the angle has a measure of 90
so if we add up all the angles
65 + 90 + x = 180 add like terms
155 +x = 180 subtract 155 from both sides
x = 25
The salary of college professors from more than 25,000 universities and colleges in USA is normally distributed with a mean, $85,900 and its standard deviation, $11,000. If you collect a random sample from 35 professors, find the probability that the sample mean is between $70,000 and $100,000?
Answer:
The answer is below
Step-by-step explanation:
The z score is used to determine by how many standard deviations the raw score is above or below the mean. The z score is given by the formula:
[tex]z=\frac{x-\mu}{\sigma} \\\\where\ x=raw\ score,\mean,\ \sigma=standard\ deviation.\\\\For \ a\ sample\ size(n):\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} }[/tex]
Therefore given that μ = $85900, σ = $11000, n = 35.
For x > 70000:
[tex]z=\frac{x-\mu}{\sigma/\sqrt{n} } =\frac{70000-85900}{11000/\sqrt{35} } =-8.55\\[/tex]
For x < 100000
[tex]z=\frac{x-\mu}{\sigma/\sqrt{n} } =\frac{100000-85900}{11000/\sqrt{35} } =7.58[/tex]
From the normal distribution table, P(70000< x < 100000) = P(-8.55 < z < 7.58) = P(z < 7.58) - P(z < -8.55) = 1 - 0 = 1 = 100%