Answer:
19xy + 16z
Step-by-step explanation:
combine like terms
7xy +1 2xy= 19xy
8z - 2z + 10z = 16z
(WILL GIVE BRAINLIEST IS CORRECT)
A. a prediction based on the data is not completely reliable, because the means of sample 2 and 3 are too close together.
B. A prediction based on the data is reliable, because there are no noticeable differences among the samples.
C. a prediction based on the data is not completely reliable, because the mean of sample 1 is noticeably lower than the means of the other 2 samples.
D. a prediction based on the data is reliable, because the means of samples 2 and 3 are very close together.
Answer:
I’m pretty sure it’s D.
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
PLEASE EHELP ASAP AGHHHHH
Answer:
8.3
Step-by-step explanation:
mark as brainliest!!
You roll a standard number cube 7 times Assume that each number is equally likely to come up each time you roll To the nearest tenth of a percent the probability that number less than 3 comes up exactly 4 of the 7 times
Answer:
0.4%
Step-by-step explanation:
If we are looking to have a number less than 3 rolled 4 out of 7 times.
Our winning numbers are 1 and 2. Our losing numbers are 3, 4, 5, and 6.
This means that our winning percentage is 33.3% and our losing percentage is 66.6%.
We need to multiply these numbers together taking our number of rolls into account.
.333 * .333 * .333 * .333 * .666 * .666 * .666 = 0.0036
which expressions are equivalent to -96/5
Answer:
irdk but papi u a rari
Step-by-step explanation:
PLEASE HELP!
Which interval indicates the answers most students gave?
Dominic has a bag that contains pineapple chews, cherry chews, and peach chews. He performs an experiment. Dominic randomly removes a chew from the bag, records the result, and returns the chew to the bag. Dominic performs the experiment 53 times. The results are shown below:
A pineapple chew was selected 39 times.
A cherry chew was selected 9 times.
A peach chew was selected 5 times.
Based on these results, express the probability that the next chew Dominic removes from the bag will be peach chew as a fraction in simplest form.
Answer:
5/53
Step-by-step explanation:
The length of an equilateral triangle is increased by 5 cm. The perimeter of the new triangle is 72 cm. What is the side length of the original triangle?
Answer:
19cm
Step-by-step explanation:
An equilateral triangle is a triangle where the length of the 3 sides are the same.
the perimeter is the sum of the 3 sides
for example, if the length of the side of the an equilateral triangle is 5, the perimeter is 5 x 3 = 15
let x = unknown length of side
length after increase = x + 5
(x + 5) x 3 = 72
divide both sides of the equation by 3
x + 5 = 24
subtract 5 from both sides of the equation
x = 24 - 5 = 19cm
show that the bowtie method can be used to multiply (2x -27)(-x +15)
( 2x − 27 ) ( −x + 15 )
= ( 2x + −27 ) ( −x + 15 )
= ( 2x ) ( −x ) + ( 2x ) ( 15 ) + ( −27 ) ( −x ) + ( −27 ) ( 15 )
= −2x^2 + 30x + 27x − 405
= −2x^2 + 57x − 405
A toy company used 18 pints to make 9 action figures, which is a rate of _ pints per figure
Answer:
For 1 figure, 2 pints are used
Step-by-step explanation:
9 figures = 18 pints
1 figure = 18/9
1 figure = 2 pints
Hope this helps!
which one is it? ill mark brainliest if correct
Answer:
D
Step-by-step explanation:
Mark as brainllest
find the area of the trapezoid?
Answer:
46,746 mm²
Step-by-step explanation:
½×(210+84)×318
= 46,746 mm²
George is planning to attend a public university after he graduates from high school in 1.5 years. He is devising a plan to save money each month to help with the expenses of attending the university. The cost of attending the public university for one-year is $31,800. His family has promised to contribute $16,500 each year he is in school. What is the minimum amount of money George must contribute to his savings per month for the next 1.5 years to have enough money to pay for his first year of tuition?
a
$625
b
$900
c
$850
d
$775
URGENT THIS IS FOR FINALS CAN SOMEONE PLZ SOLVE IT I will brain list
Answer:
were is the line
Step-by-step explanation:
Answer:
1- y=2x-5
2- y=-1/6x-5
Hope this helps you!!
your school is having a fundraiser in order to pay for t-shirts. They need to raise $882.69. They have already collected $92.85 in donations. Their goal is to have $190 donated each week. How many weeks do they need to fundraise?
There is 5 weeks do they need to fundraise.
What is the inequality?Inequality is a Mathematical statement that shows the relation between two expressions using the inequality symbol.
Your school is having a fundraiser in order to pay for t-shirts.
They need to raise $882.69.
They have already collected $92.85 in donations.
Their goal is to have $190 donated each week.
Let, x be the number of weeks do they need to fundraise.
The number of weeks do they need to fundraise is given by;
[tex]\rm 92.85 +190x > 882.69\\\\190x > 882.69-92.85\\\\ 190x > 789.84\\\\x > \dfrac{789.84}{190}\\\\x > 4.15[/tex]
Hence, there is 5 weeks do they need to fundraise.
Learn more about inequality here;
https://brainly.com/question/15140706
#SPJ2
Summer Storme is analyzing an investment. The expected one-year return on the investment is 20 percent. The probability distribution of possible returns is approximately normal with a standard deviation of 15 percent. a. What are the chances that the investment will result in a negative return? b. What is the probability that the return will be greater than 10 percent? 20 percent? 30 percent? 40 percent? 50 percent?
Answer:
suchh harddb
Step-by-step explanation:
a fair dice is rolled. work out the probability of getting a factor of 6. give your answer in its simplest form
Answer:
1 out of 60.
this is found by taking the one side of six and multiplying the total sides by 10.
Step-by-step explanation:
Ayuda plis, no le entiendo ni mais :"
Answer:
Entiendo tu idioma, hablas español, ¿no? Me encantaría ayudarte hablo inglés y español
Step-by-step explanation:
Help, and if you send a link I whole report
A 16 ft ladder leans against a wall so that the base of the ladder is 5 ft away from the base of the wall. How far up the wall does the ladder reach.
Answer:
The ladder would reach 15.2 feet up
PLEASE HELP EASY MATH!!!!!!!!!
Answer:
b
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
Can somebody help me on number 6 Please I need TO TURN IT IN ITS DUE IN A COUPLE OF MIN PLEASE!!
Answer:
Macaroni, spaghetti, and bow tie are all types of pasta.
• Which expressions are equivalent to 14a + 286?
Answer:
2(7a + 143)
what are the answers or are you asking us to find them
Answer:
2(7a + 4)
Step-by-step explanation:
How many solutions does the equation 4x+2(x-5)=3(3x-4) have?
Answer:
It has 1.
Step-by-step explanation:
x=2/3 or x=0.6.
Jeffrey's recipe for oatmeal muffins calls for 2 3/4 cups of oatmeal and makes one dozen muffins. If he makes 2 dozen muffins for a club meeting and 1 1/2 dozen muffins for a family reunion, how much oatmeal will he use?
Answer:
5
Jeffrey will use 9 __ cups of oatmeal
8
Step-by-step explanation:
2.75 cups of oatmeal per 1 dozen
2.75 x 2 = 5.5
2.75 + 2.75(1/2) = 4.125
add
5.5 + 4.125 =
9.625 cups of oatmeal
or
9 5/8 cup
HELPPPP!!!!!
Which of the following is a statistical question?
A. How many students in Marley's class like math?
B. How old are the students at this school?
C. How many teeth does Jessica have in her mouth?
D. How many baseball cards does Larry have?
Answer:
The correct answer is A!
Step-by-step explanation:
i got it right
PLEEEEASEEE HELP ASAP
In the diagram, the measures of ∠1 and ∠4 are 105°. The measures of ∠5 and ∠8 are 115°. Are lines c and d parallel
a p e x
Answer:
a
Step-by-step explanation:
Answer:
Option A
Step-by-step explanation:
I just got done with this same quiz and i got a 100 .
Someone please help me with this algebra question the formula for triangle is A = 1/2bh and for the trapezoid is a=1/2h(b1 + b2) if I’m not wrong
Answer:
Triangle: 63 square units Rhombus: 56 square units
Step-by-step explanation:
Rhombus formula: Base x Height
4 x 14 = 56
Triangle formula: 1/2 x Base x Height
6 x 21= 126
126 x 1/2 = 63
btw, this isn't algebra
A hospital recorded the weights, in ounces, of newborn babies for two weeks. The
results are listed below.
Weights of babies born during week one: 128, 105, 80, 82, 96, 98, 87, 100, 112, 126
Weights of babies born during week two: 75, 85, 90, 97, 89, 105, 110, 127, 129, 130
Which statement is true?
Answer:
The standard deviation for week two was about 3 ounces more than the standard deviation for week one
Step-by-step explanation:
Given
[tex]Week\ 1: 128, 105, 80, 82, 96, 98, 87, 100, 112, 126[/tex]
[tex]Week\ 2: 75, 85, 90, 97, 89, 105, 110, 127, 129, 130[/tex]
See attachment for options
Required
The true statement
Checking the standard deviation
For week 1
Calculate the mean:
[tex]\bar x = \frac{\sum x}{n}[/tex]
[tex]\bar x = \frac{128+ 105+ 80+ 82+ 96+ 98+ 87+ 100+ 112+ 126}{10}[/tex]
[tex]\bar x = \frac{1014}{10}[/tex]
[tex]\bar x_1 = 101.4[/tex]
Then standard deviation
[tex]\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n}}[/tex]
[tex]\sigma_1 = \sqrt{\frac{(128 - 101.4)^2 +............+ (126- 101.4)^2}{10}}[/tex]
[tex]\sigma_1 = \sqrt{\frac{2522.4}{10}}[/tex]
[tex]\sigma_1 = \sqrt{252.24[/tex]
[tex]\sigma_1 = 15.88[/tex]
For week 2, we have:
[tex]\bar x = \frac{75+ 85+ 90+ 97+ 89+ 105+ 110+ 127+ 129+ 130}{10}[/tex]
[tex]\bar x = \frac{1037}{10}[/tex]
[tex]\bar x_2 = 103.7[/tex]
Then standard deviation
[tex]\sigma_2 = \sqrt{\frac{(75 - 103.7)^2 +................+ (130- 103.7)^2}{10}}[/tex]
[tex]\sigma_2 = \sqrt{\frac{3538.1}{10}}[/tex]
[tex]\sigma_2 = \sqrt{353.81[/tex]
[tex]\sigma_2 = 18.81[/tex]
Compare the standard deviations
[tex]\sigma_1 = 15.88[/tex]
[tex]\sigma_2 = 18.81[/tex]
Calculate the difference:
[tex]d = \sigma_2 - \sigma_1[/tex]
[tex]d = 18.81 - 15.88[/tex]
[tex]d = 2.93[/tex]
[tex]d \approx 3[/tex]
This implies that option (b) is true
1½ hours is how much in seconds??
3/2=1.5 hour=5400 second
Hope it helps you
Answer:
5,400 seconds.
Solve log2 x = log5 3+1 by graphing. round to the nearest tenth
Answer:
the answer is 3.2
Step-by-step explanation:
x≈3.2