Answer:
use a calculator
Step-by-step explanation:
best trick
Which shows the best use of associative and commutative properties to make simplifying 3/4 - 5 + 9 -2/4 + 2 easier?
Answer:
(-5) + 9 + 2 + 3/4 + (-2/4)
Tickets to a fundraiser are $14 if purchased ahead of time, and $25 if purchased at the door. The total amount raised from all ticket sales was $788. If the number of tickets purchased ahead of time was five less than the number of tickets that were purchased at the door, how many tickets were purchased at the door?
Answer: 25(11)=275 which is the price of the 11 bought at the door
Two people are driving to work at different constant speeds. The graph below shows the distance traveled over time by driver 1.
The table (no graph included just the table) below shows the distance traveled over time by driver 2.
What is the difference between the speeds of the two drivers in mph?
Answer:
5 mph
Step-by-sep explanation:
To find of out the difference between the speed of the two drivers in miles per hour (not in miles per minute), first, calculate the unit rate or speed of driver 1 using the graph, and driver 2 using the table given.
Unit rate/speed = distance travelled/time = y/x.
Speed of Driver 1/unit rate:
The graph shows 1.5 miles (y) is travelled in 2 minutes (x).
Convert the 2 minutes to hour, you will have:
[tex] \frac{2}{60} = \frac{1}{30} hr [/tex]
Speed in mph = [tex] \frac{y}{x} = \frac{1.5}{\frac{1}{30}} = 1.5*\frac{30}{1} = 45 [/tex]
Speed of Driver 1 in mph = 45 mph
Speed of Driver 2/unit rate:
The table shows 2.5 miles (y) is travelled in 3 minutes (x).
Convert the 3 minutes to hour, you will have:
[tex] \frac{3}{60} = \frac{1}{20} hr [/tex]
Speed in mph = [tex] \frac{y}{x} = \frac{2.5}{\frac{1}{20}} = 2.5*\frac{20}{1} = 50 [/tex]
Speed of Driver 2 in mph = 50 mph
Difference between the speed of the two drivers = 50 - 45 = 5 mph
Cans of corn are on sale at 10 for $4. What is the cost of 15 cans
Answer:$6
10*1.5=15
4*1.5=6
Step-by-step explanation:
If 12 g of a radioactive substance are present initially and eight years later only 6 g remain, how much of the substance will be present after 11 years
Answer:
4.083g
Step-by-step explanation:
12 g of a radioactive substance are present initially and eight years later only 6 g remain, how much of the substance will be present after 11 years
Starting with half life, we want to find k.
In a 4 year period, t=8 and A quantity will be reduced to (1/2)*A.
(1/2)= e^k8
In(1/2)
How do you do this question?
Answer:
z = -ln│5eᵗ + C│
Step-by-step explanation:
dz/dt + 5eᵗ⁺ᶻ = 0
dz/dt = -5eᵗ⁺ᶻ
dz/dt = -5eᵗeᶻ
-e⁻ᶻ dz = 5eᵗ dt
e⁻ᶻ = 5eᵗ + C
-z = ln│5eᵗ + C│
z = -ln│5eᵗ + C│
are the triangles congruent ?
Answer:
yes its sss
Step-by-step explanation:
Answer:
SSS BECAUSE THE TRIANGLE IS GOING UP AND DOWN SO 5% of it so SSS
Which graph is this?
The Tigers, a football team, must gain 10 yards in the next four plays to keep possession of the ball. The Tigers lose 24 yards, gain 4 yards, and lose 10 yards. How many yards do they need to keep possession?
40
20
-20
-8
Answer:
B. The must gain 20 yards to keep possessionStep-by-step explanation:
Let the number of yards gained be positive
Let the number of yards lost be negative
Since the total that must be gained in the next four games is 10, hence the total is +10
If The Tigers lose 24 yards, gain 4 yards, and lose 10 yards in the first three rounds with x being the number of yards in the fourth round, this is expressed as;
-24 + 4 - 10 + x = 10
-20 - 10 + x = 10
-30 + x = -10
x = -10 + 30
x = 20
Hence they need 20 yards in the last round to keep possession
Help and show all work please
Answer:
all my work is in the picture but srsly pls u should make another question with more points... blank tho :( this took a rlly long time, pls?
For which inequality is x = 5 a solution ?
Answer:
C
Step-by-step explanation:
because x<2 is ... -1,0,1
x>9 is 100,11,12...
but x<18 is 17,16.. 6,5,4
x>42 is more than 42 so 43,44,45...
Find the point-slope equation of the line contains (-2,-3) and having slope m=4
Answer:
y + 3 = 4 x (x + 2)
Step-by-step explanation:
point slope formula is y-y1 = m(x-x1)
slope intercept form is y = 4x + 5
y=mx +b
m=4
The price of a can of beans is raised from 64 cents to 74 cents. Approximately what is the percent of increase in the price of the can of beans?
Answer:
15.6%
Step-by-step explanation:
The formula for the percent of change is
Original - new/ original
So
(74-64)/ 64 = 0.1562
Make that a percent
15.6%
which inequality is true?
Answer:
the answer is B
Step-by-step explanation:
1. A grid shows the position of a subway stop and your house. The subway stop is located at (-10, -1) and your house is located at (-18, -16). What is the distance between your house and the subway stop?
A.17
B.22
C.19
D.15
What is the perimeter of this figure?
Answer:210. 2/3
you would have to add all the numbers to get the answer even the fractions
Answer:
230.6 or 692/3
Step-by-step explanation:
365/6 + 326/6 + 356/6 + 337/6 = 1384/6 = 692/3 = 230.6
A rocket ship is travelling at an average speed of 1.75 × 104 miles per hour. How many miles will the rocket ship travel in 1.2 × 102 hours?
Answer:
The rocket ship will travel 2.1 × 10y miles.
Step-by-step explanation:
Mai has 4 CDs that she is going to give away. She lets her best friend choose 3 of the 4 CDs. How many different groups of 3 CDs are possible?
What’s the slope of the graph? (photo included)
giving out brainliest!
Answer:
Using the slope formula with points (0,-1) and (-4,4)
Step-by-step explanation:
Step 1: find the points, (0,-1) and (-4,4)
Step 2: Insert plot points into Slope formula: (tip: M means slope)
m(slope)= [tex]\frac{y_{2} - y_{1}}{x_{2}-x_{1}}[/tex] -> m(slope)=[tex]\frac{4-(-1)}{-4-0}[/tex]
Step 3: Solve:
m(slope)=[tex]\frac{5}{-4}[/tex]
Answer:
Slope is [tex]\frac{5}{-4}[/tex]
or m = [tex]\frac{5}{-4}[/tex]
OR (if your teacher wants the answer in decimal form rounded to the nearest 10th.) m = -1.3
I need the correct answer not the wrong answer or the I don’t know answer CORRECT..
Answer:
6 un
Step-by-step explanation:
2 22= 6
Answer:
1
Step-by-step explanation:
2devided
by 2 =1
A box contains 14 large marbles and 11 small marbles. Each marble is either green or white. 8 of the large marbles are green, and 5 of the small marbles are white. If a marble is randomly selected from the box, what is the probability that it is small or green?
Answer: 19/25.
Step-by-step explanation:
Given data:
Large marbles = 14
Small marbles = 11.
8 large marbles = green.
5 of small marbles = white.
Solution:
If 8 of large marbles are green, therefore the remaining 6 are white.
Likewise for the small marbles the remaining 6 are green marbles.
Total number of marbles = 14 + 11
= 25.
P(small or green) = P(small) + P (green) – P (Both)
= 11/25 + 14/25 – 6/11
= 19/25
Answer:
Answer is 0.7536
Step-by-step explanation:
Large Marbles = 14 Small Marbles = 11
Green LM = 8 Green SM = 6
White LM = 6 White SM = 5
QUESTION:
If a marble is randomly selected from the box, what is the probability that it is small or it is green?
Note the use of "or" and not "and".
SOLUTION:
In this case, the two events - small marble & green marble - are NOT mutually exclusive. This means that sometimes they occur together. We can have a marble that is both small and green!
The formula for this probability is hence
P(A or B) = P(A) + P(B) - P(A and B)
Let A = The event that the selected marble is small
B = The event that the selected marble is green
Total number of marbles = 14 + 11 = 25
P(A or B) = 11/25 + (8+6)/25 - [P(A) × P(B)]
P(A or B) = 11/25 + 14/25 - [11/25 × 14/25]
= 0.44 + 0.56 - 0.2464 = 1 - 0.2464 = 0.7536
what is 52.03 squared?
Answer:
It is 2707.1209
Step-by-step explanation:
Which graph shows a set of ordered pairs that represents a function?
Answer:
2nd Graph
General Formulas and Concepts:
Algebra I
Vertical Line Test - A function's x-values must have only 1 corresponding y-value. If the function fails this test, it is not a function.Step-by-step explanation:
When we apply the Vertical Line Test to the 1st graph, it does not pass (x = 1). Therefore, the 1st graph is not a function.
When we apply the Vertical Line Test to the 2nd graph, it does pass. Therefore, the 2nd graph is a function.
When we apply the Vertical Line Test to the 3rd graph, it does not pass (x = 2). Therefore, the 1st graph is not a function.
When we apply the Vertical Line Test to the 4th graph, it does not pass (x = -3). Therefore, the 4th graph is not a function.
Answer:
2nd graph is correct
Step-by-step explanation:
With 95% confidence, the researcher estimates the mean birth weight of all babies born to women who are over the age of 40 to be between 2935 and 3135 grams. The researcher wants to maintain the 95% level of confidence but report a confidence interval with a smaller margin of error. What should she do
This question is incomplete, the complete question is;
A medical researcher wants to estimate μ, the mean weight of babies born to women over the age of 40.
The researcher chooses a random sample of 100 pregnant women who are over 40. Using the mean birth weight of the 100 babies in the sample, the researcher calculates the 95% confidence interval for μ.
With 95% confidence, the researcher estimates the mean birth weight of all babies born to women who are over the age of 40 to be between 2935 and 3135 grams.
The researcher wants to maintain the 95% level of confidence but report a confidence interval with a smaller margin of error. What should she do
a) Redo the study and choose a different sample of size 100
b) Redo the study, but this time with a sample size 64
c) Redo the study, but this time with a sample 225
Answer:
Option C) is the correct answer.
C) Redo the study, but this time with a sample 225
Step-by-step explanation:
Given that;
A medical researcher wants to estimate μ, the mean weight of babies born to women over the age of 40.
n = 100
95% confidence interval is given ( 2935, 3135)
But the researcher wants to maintain the 95% level of confidence as well as smaller margin of error.
Therefore we have to reduce the margin of Error
and we know that if the sample size increases, the margin of Error decreases i.e it becomes smaller.
so the best option for the researcher is to redo the study with a larger sample size so the margin of Error becomes smaller.
Option C) is the correct answer.
c) Redo the study, but this time with a sample 225
Which expression is equivalent to 4 – (-7)
a 7+ 4
b 4 - 7
c-7 - 4
d -4 + 7
Answer:
A. 7 +4
Step-by-step explanation:
4 -( - 7 )
4 + 7
7 + 4
Answer:
a
Step-by-step explanation:
4 + 7 = 11. subtracting a negative number is the same as adding
Find... (look at the picture)
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KJI = KJY + YJI
Thus ;
[tex]168 =( 8x - 4) + (36x - 4)[/tex]
[tex]168 = 8x - 4 + 36x - 4[/tex]
Collect like terms
[tex]168 = 44x - 8[/tex]
Add sides 8
[tex]168 + 8 = 44x - 8 + 8[/tex]
[tex]176 = 44x[/tex]
Divide sides by 44
[tex] \frac{176}{44} = \frac{44}{44} x \\ [/tex]
[tex] \frac{16 \times 11}{4 \times 11} = x \\ [/tex]
[tex]4 = x[/tex]
[tex]x = 4[/tex]
So ;
[tex]YJI = 36x - 4[/tex]
[tex]YJI = 36(4) - 4[/tex]
[tex]YJI = 144 - 4[/tex]
[tex]YJI = 140°[/tex]
Done...
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Find the prime factorization of 32. Write in exponential form.
A. 2 × 2 × 2 × 2 × 2
B. 26
C. 2 × 2 × 2 × 2
D. 25
Answer:
find the prime factorization of 32. write in exponential form.
option A is correct
Jackson builds legos at a rate of 3 projects per hour. Write a function that represents the relationship between the amount of Legos built, b, and the number of hours he works, h.
Answer:b=3h
Step-by-step explanation:
Find f(-5) If f(x) = lx+ 1l.
What is the greatest place value in this number, 189?
Answer:
the 1 cause it's a 100
Step-by-step explanation:
100 + 80 + 9