Answer:
x = 4.4
Step-by-step explanation:
I'm going to assume you want to solve for x so here we go.
You need to work backwards for this equation, and whatever you do to the LHS, you do to the RHS.
First, you need to remove the minus 3, which means that on both sides, you add 3. Adding three on the LHS makes the -3 disappear, and adding 3 on the RHS makes the 19 go to a 22.
Your equation is now 5x=22.
Since 5x means 5 × x, to get rid of it, you need to divide 5x by 5. Doing it to the LHS will make the five disappear, and doing it to the RHS will make it go to 22 ÷ 5 which equals 4.4
Therefore, x = 4.4
One out of eight students wore white. What percent of the students wore white?
A. 18%
B. 12.5%
C. 9%
D. 0.125%
Answer:
B
Step-by-step explanation:
100/8 = 12.5
A dodecagonal pyramid has a surface area of 130 square inches. A similar dodecagonal pyramid has a surface area of 2080 square inches. If the larger pyramid has a height of 32, what is the height of the smaller dodecagonal pyramid?
Answer:
8 in.
Step-by-step explanation:
The ratio of the surface areas is equal to the square of the ratio of the heights
Let h = the height of the smaller dodecagonal pyramid
So, [tex]\frac{2080}{130} = \frac{32^{2}}{h^{2} }[/tex]
[tex]h^{2} = \frac{32^{2} * 130 }{2080}[/tex]
[tex]h^{2} = 64[/tex]
h = 8 in.
there are 400 3rd graders,4th,and 5th graders if 187 of the students are 3rd graders and 99 of the students are 4th graders,how many students are 5th graders
Answer:
144
Step-by-step explanation:
brainliest plz it would really help out
Answer: 114 5th graders
Step-by-step explanation:
400 total
187 3rd graders
99 4th graders
187 + 99 = 286
400 - 286 = 114
The average daily volume of a computer stock in 2011 was million shares, according to a reliable source. A stock analyst believes that the stock volume in 2014 is different from the 2011 level. Based on a random sample of trading days in 2014, he finds the sample mean to be million shares, with a standard deviation of s million shares. Test the hypotheses by constructing a % confidence interval. Complete parts (a) through (c) below. (a) State the hypotheses for the test. : mu equals million shares : mu not equals million shares (b) Construct a % confidence interval about the sample mean of stocks traded in 2014. The lower bound is nothing million shares. The upper bound is nothing million shares. (Round to three decimal places as needed.) (c) Will the researcher reject the null hypothesis?
Complete question :
The average daily volume of a computer stock in 2011 was p = 35.1 million shares, according to a reliable source. A stock analyst believes that the stock volume in 2014 is different from the 2011 level. Based on a random sample of 40 trading days in 2014, he finds the sample mean to be 30.9 million shares, with a standard deviation of s = 11.8 million shares. Test the hypotheses by constructing a 95% confidence interval. Complete parts (a) through (c) below. State the hypotheses for the test. Construct a 95% confidence interval about the sample mean of stocks traded in 2014.
Answer:
H0 : μ = 35.1 ;
H1 : μ < 35.1 ;
(26.488 ; 35.312)
Step-by-step explanation:
The hypothesis :
H0 : μ = 35.1
H1 : μ < 35.1
The confidence interval :
Xbar ± Margin of error
Xbar = 30.9
Margin of Error = Zcritical * s/sqrt(n)
Zcritical at 95% = 1.96
Margin of Error = 1.96 * (11.8/sqrt(40))
Margin of Error = 4.412
Lower boundary :
30.9 - 4.412 = 26.488
Upper boundary :
30.9 + 4.412 = 35.312
Confidence interval = (26.488 ; 35.312)
Since the population mean value exists within the interval, the we fail to reject the Null.
Which of the following could be a zero of f(x)=x4-10x3+35x2-50x+24
Answer:
this answer is
Step-by-step explanation:
Invisible
Find the circumference of the pizza. Round your answer to the nearest hundredth.
Answer:
40.84 inches
Step-by-step explanation:
C=πd
C=π(13)
C=13π
C=40.84
So the pizza has a circumference of about 40.84 inches.
. Jada is standing 10 feet from the base of a tree and spots a nest sitting on a branch. The angle of elevation from the ground where she is standing to the nest is 55 ° . Find the height of the nest.
PLZ PLZ PLZ HELP ME WILL MARK BRAINLIEST Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used. Match each division expression with the correct quotient.
1. (16x² + 48x) ÷ 8x
[tex]\implies \sf{\dfrac{8x(2x + 6)}{8x}}[/tex]
[tex]\implies \sf{2x + 6}[/tex]
2. (56x² - 14x) ÷ 7x
[tex]\implies \sf{\dfrac{7x(8x - 2)}{7x}}[/tex]
[tex]\implies \sf{8x - 2}[/tex]
3. (20x² - 32x) ÷ 4x
[tex]\implies \sf{\dfrac{4x(5x - 8)}{4x}}[/tex]
[tex]\implies \sf{5x - 8}[/tex]
4. (18x² + 15x) ÷ 3x
[tex]\implies \sf{\dfrac{3x(6x + 5)}{3x}}[/tex]
[tex]\implies \sf{6x + 5}[/tex]
Una pelota sale disparada desde el nivel del suelo, con una velocidad de 40 m/s y un ángulo de elevación de 50°. a) Calcule la altura máxima que alcanza la pelota
Respuesta:
Los 47.85m
Explicación paso a paso:
Altura máxima = u²sin²Ф / 2g
Dado
velocidad u = 40 m / s
Ф = 50 °
g = 9,81 m / s²
Sustituir'
H = 40²sin²50 / 2 (9,81)
H = 1600 (0,7660) ² / 19,62
H = 1600 (0,5868) /19,62
H = 938,8096 / 19,62
H = 47,85 m
Por lo tanto, la altura máxima es de 47,85 m.
hii i’ll give brainliest please help thanks :)
Answer:
b
Step-by-step explanation:
Which of the following is a statistical question?
A.
How many pages did Barry read last night?
B.
How many siblings does James have?
C.
How many miles does an elephant walk in a day?
D.
How old is Alisha?
Answer:
b
Step-by-step explanation:
Answer:
D.how old is Alisha
Step-by-step explanation:
A statistical question is something that can be answered by collecting data. For example how old am i? is not a statistical question.
Willl give brainlyist if quick its timedd
Answer:
feel like its C
Step-by-step explanation:
Which expression is equivalent to 4(3n -5)?
Answer:
12n-20
hope this helps
have a good day :)
Step-by-step explanation:
Answer:
sorry i dont know the answer
Step-by-step explanation:
Which General won the Battle of Gettysburg?
Answer: The Cautious Meade
Battle of Gettysburg: Aftermath and Impact
The Union had won the Battle of Gettysburg. Though the cautious Meade would be criticized for not pursuing the enemy after Gettysburg, the battle was a crushing defeat for the Confederacy.
Hope this helped<3.
18 cm
10 cm
15 cm
Find the area of the triangle.
[?] square centimeters
Which are the base and height of the triangle?
Answer: If 10 and 15 are base and height, then answer is 75 cm squared. If 15 and 18 are base and height, then answer is 135 cm squared. If 10 and 18 are base and height, then answer is 90 cm squared.
Answer:75
Step-by-step explanation:
Solve for the inequality for p. write it out in simplest form. Please help! :)
4p−1≤ 3p−10
Answer:
p≤ -9
Step-by-step explanation:
4p-1≤ 3p-10
4p-3p≤ 1-10
p≤ -9
If this helps please mark as brainliest would really appreciate it
Answer:
See the image below:)
Step-by-step explanation:
Leslie had 30 pieces of bubblegum. Each piece of bubblegum cost $.12 each. What was the total she paid for all 30 pieces of bubblegum?
Step-by-step explanation:
30 pieces of bubblegum
each piece: $.12
Total paid = 30 × $.12
Answer: $3.60
Shonda earns $10 per hour at Sneakers Plus. She is also paid a $2 commission on every pair of sneakers she sells. How much did Shonda earn if she worked 6 hours and sold 9 pairs of sneakers?
Answer:
78
Step-by-step explanation:
6*10=60
2*9=18
60+18=78
Can someone help me solve this pls
Answer: that’s an acute angle
Step-by-step explanation:
Simplify the expression below.
(xy)^8
A.
xy^8
B.
x^8y^8
C.
8xy
D.
8xy^8
measured the sides of a right triangle to be 15cm and 8cm. Find the length of the hypotenuse.
pleaseeeeee help
do not scam me
marking brainlist
Answer:
mirror x than mirror y i guess
Step-by-step explanation:
100 ÷ half of 20 = What is the answer and steps Half of 20 means 10 but in BODMAS rule of means multiplication So please tell steps also
Answer:
it's 10 but i do'nt know the rule i'm sorry
Step-by-step explanation:
frank needs to save $600 to buy a set of golf clubs. He plans to save $75 per month. Write an equation that Frank can solve to determine the amount of money he still has to save (y) in relation to the number of months (x) in which he saved money. what is the slope of that equation?
What is the range of the following graph? Please don’t put down any links.
Answer:
[-4, infinity)
Step-by-step explanation:
The range is all the y values. The minimum is -4, and the maximum is infinity because there are arrows pointing upwards.
which statement about 307° is correct?
a. sin 307° > 0
b. cos 307° < 0
c. tan 307°<0
Answer: C. tan 307°<0
Step-by-step explanation: Quizzed
Write an equation that you can use to find the value of x'.
Perimeter of triangle: 16 in.
Answer:
x= 16/3
Step-by-step explanation:
From the equation we know x is the same for all sides so the perimeter is:
p = x + x+ x we know the perimeter so it would be
16 = 3x (we add the x)
then we need to divide both sides by three to have an equation for x so it would be:
x= 16/3
a Cone
15.1: Which Has a Larger Volume?
The cone and cylinder have the same height, and the
radii of their bases are equal.
Do you think the volume of the smaller one is more or
less than the volume of the larger one? Explain your
reasoning
8
8
Answer:
The cylinder has the larger volume. this is because the formula for the volume of a cone and cylinder are the same but the cone has the fraction 1/3.
So, three cones can fit into the cylinder, so it is less then one half
Two sides of a triangle measure 7 feet and 19
feet. Write an inequality to represent the range
of lengths for the third side.
Answer:
12<x<26
Step-by-step explanation:
7 + 19 = 26
19 - 7 = 12
Always put the larger number before the smaller one while subtracting like I just did.
The inequality to represent the range of lengths for the third side as
{x} < 26.
What is a triangle?A triangle is a two - dimensional figure with three sides and three angles.
The sum of the angles of the triangle is equal to 180 degrees.
∠A + ∠B + ∠C = 180°
Given is that two sides of a triangle measure 7 feet and 19 feet.
It is aske to write an inequality to represent the range of lengths for the third side. It is given that two sides of a triangle measure 7 feet and 19 feet.
For a inequality, the sum of the lengths of the two smaller sides is greater than the length of the maximum side. So, write an inequality to represent the range of lengths for the third side as -
19 + 7 > x
x < 19 + 7
x < 26
So, we can conclude that the inequality to represent the range of lengths for the third side as {x} < 26.
Therefore, the inequality to represent the range of lengths for the third side as {x} < 26.
To solve more questions on triangles, visit the link-
https://brainly.com/question/2773823
#SPJ7
hello please help i’ll give brainliest
Answer:
1. 1
2. 6
3. 3 or 4
Step-by-step explanation:
Answer:
1. 8 families have 3 children
2. 25 families are represented in the dot plot.
3. 20 families have less than 4 children