89.09% of books will weigh 11 pounds or more, then the number of books will be 129.
What is a z- score?The z-score is a numerical measurement used in statistics to refer to how much a given value differs from the standard deviation.
The weights of books in a bookcase are normally distributed with a mean of 11.6 pounds and a standard deviation of 1.3 pounds. There are 136 books on the bookshelf.
Then the z-score when the books will weigh 11 pounds or more will be
[tex]z= \frac{11-13.5}{2.3} \\\\z= -1.0869[/tex]
Then the probability will be
[tex]P(x > 11) = 1-P(x < 11 ) = 0.8909[/tex]
89.09% of books will weigh 11 pounds or more, then the number of the books will be
=145 × 0.8909
=129.1805 ≈ 129
More about the z-score link is given below.
brainly.com/question/15016913
#SPJ1
a triangular sail with a height of 6 feet has a base that is 9 feet long what is the area of the sail
Answer:
54 I think
Step-by-step explanation:
you multiply the width times the length and that’s the area
hope this helps!
What is this transformation called?
Answer:
It is translation
the car stays the same when it moves from BLUE to B"L"U"E"
Step-by-step explanation:
if it was a rotation, the car would be upside-down in the final product.
if it was a reflection, the car would also be upside-down.
if it was a dilation the final product would be smaller.
This is how we know is a translation.
Amy planted a flower garden with rows of blue flowers, b, and rows of yellow flowers, y. Each row of blue flowers has 5 flowers, and each row of yellow flowers has 7 flowers. Which expression represents the total number of flowers Amy planted?
A. 5 + r + 7 + b
B. 5b + 7y
C. 5 × 7 + b × y
D. 5y + 7b
This problem has two variables, b and y. The b value is the number of rows of blue flowers, and the y value is the number of rows of yellow flowers.
In every row of blue, there are 5 flowers.
In every row of yellow, there are 7 flowers.
Therefore, our expression would be 5b + 7y.
I hope this answers your question.
-Toremi
PLS help i need this ASAP
Answer:
I beleive your answer would be ∡B
Step-by-step explanation:
The principal at mcdermott middle school is planning to survey students at his school, but only wants the survey to contain statistical questions. the following list contains survey questions that he is considering.
determine whether each question is a statistical question. type "yes" or "no" to indicate whether or not it is a statistical question.
what is the school's mascot?
how many minutes long is third period?
how many clubs do you participate in?
how many electives do you want to take next year?
what is the school's mascot? no
how many minutes long is third period? no
how many clubs do you participate in? yes
how many electives do you want to take next year? yes
Help me please Anyone
Answer:
Step-by-step explanation:
How do you solve a rectangle word problem?
The area A of a rectangle is given by the formula, A=lw , where l is the length and w is the width. Given that, the area is 500 square feet and the width is 20 feet. So, substitute these values into the formula. Divide each side by 20 to isolate l .
which angles are congruent in the isosceles triangle
-8/7 / 5/4 as a fraction
Answer:
- 32/35
Step-by-step explanation:
-8/7 / 5/4 = -32/35
Select the correct answer.
ΔABC is reflected across the x-axis and then translated 4 units up to create ΔA′B′C′. What are the coordinates of the vertices of ΔA′B′C′ ?
A.
A′(-3, 3), B′(-1, 1), C′(-2, 3)
B.
A′(3, -3), B′(1, -1), C′(2, -3)
C.
A′(3, -5), B′(1, -7), C′(3, -5)
D.
A′(-3, 3), B′(-1, 1), C′(-2, -3)
Answer:
The correct to the question about is simply C. A is ruled out because it doesn't represent refections
Which object would weigh closest to 5 pounds A.Bee B. Flour C.Hat D.Football
I believe the answer is football.
The graph of g(x)=(x-12)^2 is the graph of f(x)=x^2 translated ____ units
[tex] \black{ \rule{1000pt}{5555555pt}}[tex] [/tex]
Find the median of the data in the box plot below.
dollars
Cost of each lunch for the month (in dollars)
8
9
10
7
4.
5
6
Сл
Report a problem
Stuck? Review related articles/videos or use a hint.
Find the values of the variables.
31
W
Х
V
у
68°
Z
Answer:
X=121, y=59, w=59, z=53
Step-by-step explanation:
To find w, we know that the interior angles of a triangle are 180°. Thus ↓
180-31-90=59
For y, we know that y and w are opposite angles. Therefore, y = w = 59.
To find x, we know that there is a one straight line, so therefore we use ↓
180-59=121
Lastly, to find z, we know that the interior angles of a triangle are 180°. Thus ↓
180-59-68=53
I've attached a photo for better understanding. Hope this helps =)
pleas help!!! no links! According to the line plot, what is the total distance run by the runners that each ran 1/5 of a mile and 1/2 of a mile?
1 3/10 miles
1 7/10 miles
4 miles
1 1/2 miles
17/10 miles
1/5*1+1/2*3=3/2+14/10=17/10
Answer:
1/5+3/2=2/10+15/10=17/10
I WILL GIVE BRAINLIEST 50 POINTS
Find x. Round your answer to the nearest tenth of a degree.
#b
[tex]\\ \rm\rightarrowtail tan47=\dfrac{b}{21}[/tex]
[tex]\\ \rm\rightarrowtail b=21tan47[/tex]
[tex]\\ \rm\rightarrowtail b=22.5[/tex]
#c
[tex]\\ \rm\rightarrowtail cos47=\dfrac{21}{c}[/tex]
[tex]\\ \rm\rightarrowtail c=21/cos47[/tex]
[tex]\\ \rm\rightarrowtail c=30.88[/tex]
Answer:
c = 30.8 (nearest tenth)
Step-by-step explanation:
Pythagoras' Theorem: a² + b² = c²
(where a and b are the legs, and c is the hypotenuse, of a right triangle)
Given:
a = 21b = 22.5Substitute given values into the formula and solve for c:
⇒ 21² + 22.5² = c²
⇒ 947.25 = c²
⇒ c = ±√(947.25)
⇒ c = ±30.8 (nearest tenth)
As distance is positive, c = 30.8 (nearest tenth) only
Pedro’s book weighs 194 pounds. blanca’s book weighs 177 pounds. use estimation to determine about how much more pedro’s book weighs than blanca’s.
(i dont know what you mean by that cause clearly just do 194 - 177 = 17 pounds)
Round 194 pounds to 190 ; 177 to 180
In estimation, Pedro's book weighs 190 - 180 = 10 pounds more.
190 : 180 = 1.06 times more.
What is the volume of this figure?
Enter your answer in the box.
Answer: 2080
Step-by-step explanation: formula for volume of trapezoid prism is bh. 10 times 19 is 190. formula for rectangular prism is lwh. 7 times 30 times 9 is 1890. add 190 and 1890 for both of their volumes.
if you answer correctly i will mark you brainliest
Answer:
200
Step-by-step explanation:
main steps in solving algebraic equations are number one we tie the up the equation. So basically expand any brackets or divide out any fractions.
4. Find the value of x.
to
90°
Answer:
90
Step-by-step explanation:
Measure of one arc = 90°
-> Measure of other arc = 360°- 90° = 270°
x° = 1/2 (270° - 90°)
-> x° = 1/2 * 180°
-> x° = 90°
-> x° = 90°
-> x = 90
WILL GIVE BRAINLIEST. Which of the following points is shown in the graph below?
(-1,5,3)
(1,5,3)
(1,5,-3) (1,-5,3)
Answer:
( -1, 5, 3 )
Step-by-step explanation:
First check the point on the X-axis and then match it on the Y-axis.
Answer:
A. (-1, 5, 3)
Step-by-step explanation:
Go step by step, (x, y, z) just like the alphabet. now that you know the order plug in those numbers where they belong. now you can find that (-1, 5, 3) is the only point the places directly on the grid (:
You and your friend are sharing three eighths of a bag of candy. How much of the bag will each of you get if you share it evenly?
Answer:
3/16
Step-by-step explanation:
3/8 / 2 = 3/16
Therefore you and your friend will each get 3/16.
4.
rhombus abcd has mlabc = 120° and
ab = 7. find diagonal length, bd.
Answer: 7
Step-by-step explanation:
brainliest and 50 points!
the dimensions of rectangle ABCD are shown below. (picture included)
A) 4.5
B) 7.5
C) 13.5
D) 19.5
Answer:
I believe the answer is 13.5
Step-by-step explanation:
because u need to find the area of a triangle which is Area= b*h*0.5 so fill in the blank b=9 h=3 b*3*0.5=13.5
Answer:
D). 19.5
Step by step answer:
Bigger triangle:
4 + 5 = 9 (Base)
Height = 3
A = 9 x 3 / 2 = 13.5
Smaller triangle:
Height = 3
Base = 4
A = 4 x 3 / 2 = 6
6 + 13.5 = 19.5
Please answer number 2. I don’t understand I’m very stressed right now I need help please.
Answer:
Smaller
Step-by-step explanation:
Because 7/8 is less than 1 and the sides are smaller which makes the volume smaller
:thumbsup:
2. A vanilla milkshake recipe calls for 3/8 cups of vanilla ice cream for every 1/3 cups of milk. How many cups of vanilla ice cream would be needed for 1 cup of milk?
(ಠ_ಠ)>⌐■-■. (⌐■-■)
Answer:
1 1/8 cups of vanilla for a cup of milk.
Step-by-step explanation:
v-3/8 m-1/3
v-6/8 m-2/3
v-1 1/8 m-1
Translating a phrase into a two-step expression
Translate this phrase into an algebraic expression.
Two more than the product of 17 and a number
Answer:
(17xa)+2
Step-by-step explanation:
Question 7 of 10
One spring, a group of students measured rainfall totals at their school. This
chart shows how many inches of rain the students measured each month.
How many more inches did it rain in May than in April?
RAINFALL
MONTH
March
April
May
5.7
3.2
7.3
Help me god
Answer:
9
Step-by-step explanation:
10
PLSPLSPLSPLSPLSPLSPLSPLS
Answer:
reason
1. symmetrical property
sides can be interchanged and its still true
statement
1. if triangle kjm is congruent to klm
then klm is congruent to klm
reason
2. reflexive property
triangle is congruent to itself
statement
2. triangle kjm is congruent to triangle kjm
reason
3. transitive property
if the 1st 2 triangles are congruent to each other and congruent to a third
then the first triangle is congruent to the third triangle
statement
3. if kjm is congruent to klm and
klm is congruent to abc then
kjm is congruent to abc
An settler on Mars measures the angle between the star Sero and the star Vega 3 to
be 22.4". If the Mars is approximately 93 million light years from the Sero and Vega 3
is approximately 67 million light years from the Sero (as measured by intergalactic
travelers), how far away is Vega 3 from the Mars?
The distance between Vega 3 and the Mars (MV) illustrates cosine function, and the distance is 29.1 million light years or 142.8 million light years
How to determine the distance between Vega 3 and the Mars?From the question, we have the following parameters
Angle between Sero and Vega, Ф = 22.4Distance between Mars and Sero, MS = 93 millionDistance between Vega and Sero, VS = 67 millionSee attachment for the illustration of the given parameters.
The distance between Vega 3 and the Mars (MV) is then calculated using the following cosine function
VS² = MS²+ MV² - 2 * MS * MV * cos(Ф)
This gives
4489 = 8649+ MV² - 171.96MV
Subtract 8649 from both sides
MV² - 171.96MV = -4160
Rewrite as:
MV² - 171.96MV + 4160 = 0
Using a graphing tool, we have:
MV = 29.1 and MV = 142.8
Hence, the distance between Vega 3 and the Mars is 29.1 million light years or 142.8 million light years
Read more about distance at:
https://brainly.com/question/16485848
Help me fast please 50 POINTS giving 50 points and brainliest its only 5 questions
Answer:
2x^2+1=5-2x
2x^2+1-5+2x
2x^2-4+2x=0
x^2-2+x=0
x^2+x-2=0
(x+2)(x-1)
x1= -2
x2= 1
Answer:
[tex]2x^2+1=5-2x2x^2+1-5+2x2x^2-4+2x=0x^2-2+x=0x^2+x-2=0(x+2)(x-1)x1= -2x2= 1[/tex]
Step-by-step explanation:
I hope this helps and have a good day!