Which of these are NOT expressions?
Check all that are true.
123
9 + 3 = 12
3(4x + 5)
6 − 5 − 4 = z
3z + 2x
HELP
Answer:
6-5-4=z
9+3=12
Step-by-step explanation:
Expressions has no equal sign
Find the area. Will mark brainliest.
Answer:
13.5 i think
Step-by-step explanation:
You multiply 1/2*base*height which is 1/2*4.5*6.That is equal to 13.5
hope this helps:)
Answer: home / math / area calculator
Area Calculator
Rectangle
Length (l)
Width (w)
Calculate
Triangle
Result
s =
a + b + c
2
=
4.5 + 6 + 7.5
2
= 9 yards
Area = √s(s-a)(s-b)(s-c)
= √9×(9 - 4.5)×(9 - 6)×(9 - 7.5)
= 13.5 yards2
Miguel has to take two quizzes tomorrow. He has only enough time to study
for one of them.
• The history quiz has 4 true-or-false questions.
• The science quiz has 3 multiple-choice questions.
Miguel calculates the probability that he will get all the questions correct by
guessing.
To get 100% correct:
P(guess is correct)
History
Answer 4 of 4 correctly.
0.5
Science
Answer 3 of 3 correctly.
0.2
Miguel will study for the quiz on which he is likely to do worse by guessing.
Which quiz should he study for?
O
A. History, because he must get more questions correct.
B. Science,
C.History,
Answer:
Option B is correct.
Miguel should study for the Science quiz as he will do worse in that quiz by guessing.
Step-by-step explanation:
Miguel has to take two quizzes
1) 4 true or false questions on History with a 0.5 chance of acing the quiz
Expected number of correct questions = np
n = number of questions
p = probability of acing the test
Expected number of correct questions = 4 × 0.5 = 2
2) 3 multiple choice questions on Science with a 0.2 chance of acing the quiz.
Expected number of correct questions = 0.2 × 3 = 0.6
It is evident that guessing would yield a worse result in the Science quiz with less than 1 question expected to be correct than history, where he is still expected to get 2 questions correctly by guessing.
Hope this Helps!!!
Answer:c
Step-by-step explanation:
This graph shows a proportional relationship. (2/3, 3/4)
What is the constant of proportionality?
Answer: Hi! I'd love to help you but I'd need to see the graph.
Step-by-step explanation: Can you add a picture?
100 pts!!!! PLEASE HELP!!!!!
Answer:
1)3/4
2)3
3)12 MILES
4)2.5 pounds
5)5/8 pounds
am not sure but hopefully it helps you!!!!!!
Answer:
the person above is correct
Step-by-step explanation:
Emily is a very good student. She is more likely to attend class than to miss class. Which could be the probability that she misses class tomorrow?
A
–0.4
B
0.1
C
0.7
D
1.2
Answer:
Im pretty sure it is c
Step-by-step explanation:
Find the mean? Read question rest is done.
Answer:
I believe its 8
Step-by-step explanation:
9 + 10 + 13 + 2 +6 = 40 / 5 = 8
If the probability of a chance event is 0.67, it is less likely to happen
than which of the following probabilities of another chance event?
Select one:
0.76
0.61
0.65
0
Answer:
.76
Step-by-step explanation:
John recorded the weight of his dog Spot at different ages as shown in the scatter plot below.
Part A:
Write an equation that would describe the line of best fit.
Part B:
Using the line of best fit, make a prediction of Spot's weight after 18 months.
Answer:
A) y = 1.875x + 1.25
B) 35 pounds
Step-by-step explanation:
A) We need two points to define a line. To find an equation that would describe the line of best fit, we can use one of the first points and one of the last points. Let's use (2, 5) and (10, 20).
General equation of a line:
y = mx + b
Slope of the line:
m = (20 - 5)/(10 - 2) = 1.875
y-intercept is found replacing a known point and the slope into the general equation:
5 = 1.875*2 + b
b = 5 - 1.875*2 = 1.25
The final equation is:
y = 1.875x + 1.25
where y represents weight (in pounds) and x represents age (in months)
B) At x = 18:
y = 1.875*18 + 1.25 = 35
ASAP!!!! I WILL MARK YOU BRAINIEST!!! Two men decide to drive to a distant town, taking the same route. The first leaves 2 hours ahead of the second and drives at 60 km per hour, while the second man drives at 90 km per hour. How many hours will it take the second man to catch up with the first man?
Answer:
4 hours.
Step-by-step explanation:
If the first guy is driving at 60 km, in 2 hours he is 120 km away. The second guy, leave two hours after. He will drive and in 2 hours he is 180 km. now if the second car keeps going then
120+ 60 + 60 +60 + 60 = 360
180 + 90 + 90 = 360.
So, the two hours for the guy going at 90 km and another 2 hours is 4 hours, so it will take 4 hours for the second driver to catch up.
The data below show the weights, in pounds, of a group of professional football players.
325, 310, 289, 288, 285, 285, 285, 280, 280, 273
The mean of the data set is 290 pounds. What is the mean absolute deviation of the data
set, to the nearest whole number?
26
18
11
5
Answer:
26
Step-by-step explanation:
The mean absolute deviation of the data is 11.
The mean absolute deviation (MAD) of a data set is the average distance between each data value and the mean.
To find the mean absolute deviation of the data, start by finding the mean of the data set. Find the sum of the data values, and divide the sum by the number of data values.
Given: The data below show the weights, in pounds, of a group of professional football players.
325, 310, 289, 288, 285, 285, 285, 280, 280, 273
The mean of the data set is 290 pounds.
How to find the mean absolute deviation of the data
set, to the nearest whole number?
The average absolute deviation is
[(325-290)+(310-290)+|(289-290)|+|(288-290)|+3|(280-290)|+21(280-290)|+|(273-290)|]/10
=> (35+20+1+2+5+5+5+10+10+17)/10
=> 11.
Learn more about mean on : https://brainly.com/question/16432219
#SPJ2
The points (-16,r) and (-4,11)lie on a line with slope 1/2. Find the missing coordinate r?
Answer: The missing coordinate R is 5.
Step-by-step explanation:
11=1/2(-4) + B
11=-2 +B
B= 13
B represents the y-intercept
so we will use the equation y=mx + B and we know the slope and y intercept.
r= 1/2(-16) + 13
r= 5
What is a reasonable estimate for the volume of a number cube:
8 cm3, 27 in?, or 1 ft??
Answer:
I think the 8 cm one :D
What equation is represented in this graph.
15 Points need ASAP.
Thanks!
Answer:
y = [tex]e^{x}[/tex]
Find the area. Will mark brainliest.
Answer:
a = 70
Step-by-step explanation:
a = h * b / 2
a = 10 * 14 / 2
a = 140/2
a = 70
At the end of the school year a school system has a table with the total absences and tardies in its 10 schools what is the best way to display these data?
A. Bar Graph
B.Circle Graph
C. Stem and leaf plot
D.Ogive graph
Answer:
A
Step-by-step explanation:
I have a random question. Is The Brain JUST A BOT? He never moderates or anything...
Answer:
i think that the Brain is not a bot because they help us a lot just think about it.
1. Jessie is buying a home for $198,000. The mortgage company requires a 20 percent down payment. What
is the amount of Sinclair's down payment?
Answer:
20% of 198,000 is $39,600
To set up the equation you would do:
198,000 * .2 (which is the 20%)
The answer is 39,600.
I hope this helps.
Enter the value of the 8 in the following number. 84,052.27
Answer:
80,000
Step-by-step explanation:
Answer:
80,000
Step-by-step explanation:
Solve for a.
Reduce any fractions to lowest terms. Don't round your answer, and don't use mixed fractions.
60a +64 > 80a - 92
Show Calculator
Stuck? Watch a video or use a hint.
Repo
Answer:
a≤39/5
Step-by-step explanation:
How much greater is 42 inches than
1 yard? Explain.
Answer:
6 inches
Step-by-step explanation:
1 yard =36 inches
36 inches< 42 inches
42-36 inches = 6 inches
Answer:
.1666676
Step-by-step explanation:
1 in = 0.0277778 yard
42 × 0.0277778 = 1.1666676
1.1666676 - 1 = .1666676
so 42 inches is .1666676 greater than 1 yard
Which value for x will make 3x + 10 > 75 correct?
Answer:
3x25+10=85
Step-by-step explanation:Answer is E
Hope this helped :)
Drag the tiles to the correct boxes to complete the pairs.
Match each quadratic equation with its roots.
Answer:
Step-by-step explanation:
An SUV costs $25,000. Their is 3% tax. How much will the SUV costs with tax?
Answer:
$25,750
Step-by-step explanation:
25000 x 3%=750
25000+750
Answer:
25,750.
Explanation:
Step one: Find what 3 percent of 25000 is.
25000 divided by 3 (tax percentage)
3% of 25,000 =750
Step two: add that to the original cost of the SUV.
25,000 (original cost) + 750 (3% of original cost) = 25,750
Please mark as brainliest,I need a few more :D
It's quadratic, linear or exponential?
Collete mapped her vegetable garden on the graph below. Each unit represents 1 foot.
Collete plants an 8-foot row of lettuce in the garden. Which points could tell where the row of
lettuce starts and ends?
(-1,-6) and (8, –6)
(-4, -1) and (-4,7)
(-6, -1) and (-6,8)
(-1,-4) and (7,-4)
Help pls
Answer:
(-4,-1) and (-4,7)
Step-by-step explanation:
If Collete planted a row of lettuce, that means their coordinates must have the same vertical coordinate, or the same horizontal coordinate. Another important characteristic is that between those points, there must have 8 units of separation, because it's an 8-foot row.
Only the first choice offers these characteristic to properly represent the row of plants with 8 feet distance between the first and the last plant.
Therefore, the answer is (-4,-1) and (-4,7)
Evaluate: 4+8= 2 x (6 - 3)
16
33
25
Answer:
I'm not so sure because there is no solution to that equation
Step-by-step explanation:
Always start by solving the parenthesis equation and multiply, divide, subtract, or add before you get into adding. Next you add those 2 numbers together and when you look at the answer on the left and on the right.. when they are different numbers, you know there is no solution. I'm not sure if this helped and if it didn't I'm sorry.. I tried.
top side is 6 just couldn’t fit in picture
Answer: [tex]6<z<18[/tex]
Step-by-step explanation:
Use the pythagorean theorem to find z first.
[tex]c^2=a^2+b^2\\c=\sqrt{a^2+b^2}[/tex]
a = 12
b = 6
c = z
[tex]c=\sqrt{(12)^2+(6)^2}\\ c=\sqrt{144+36}\\ c=\sqrt{180} \\c=13.4[/tex]
z is greater than a and b
what is the answer of a^2+b^2-(a-b)^2
Answer:
2ab
Step-by-step explanation:
a²+b²-(a-b)²=
=a²+b²-(a²-2ab+b²)
=a²+b²-a²+2ab-b²
=2ab
A snack mix recipe calls for 2 1/2 cups of pretzels, 4 1/2 cups of dry cereal, 2 1/4 or peanuts, and 3/4 cups of raisins.If you want to make servings of 3/4 cup each, how many can you have with those ingredients?
Answer:
13 1/3 cups
Step-by-step explanation:
find common denominator then add all of the fractions then divide by 3/4
