multiply the top equation by 3, multiply the bottom equation by 4, then subtract the bottom equation from the top equation
multiply the top equation by 3, multiply the bottom equation by -2, then add the equations
a car travels 180 miles in 3 hours what is the rate of it
Answer:
60mph
Step-by-step explanation:
Can someone do these problems, thank you :-)
Answer:
Step-by-step explanation:
1) 2^2 + 2^2 = c^2
4 + 4 = c^2
8 = c^2
c = sqrt8
2) 2^2 + 3^2 = c^2
4 + 9 = c^2
13 = c^2
c = sqrt13
3) 10^2 + 4^2 = c^2
100 + 8 = c^2
108 = c^2
c = sqrt108
4) 1^2 + 5^2 = c^2
1 + 25 = c^2
26 = c^2
c = sqrt26
5) 3^2 + 1^2 = c^2
9 + 1 = c^2
10 = c^2
c = sqrt 10
6) 9^2 + 9^2 = c^2
81 + 81 = c^2
162 = c^2
c = sqrt162
1. f(x) = 3x – 2; f(4)??
Answer:
the answer is 5
Step-by-step explanation:
f(4) = 3(4) -2
7 - 2 = 5
A bag contains 13 cups of cat food. Your cats eat 1 1/2 cups of cat food each day .Is there enough to last 2 weeks
Solve the inequality.
2(4+2x)25x+5
Answer:
[tex]100x^{2} +200x+5[/tex]
Step-by-step explanation:
Answer:
x ≤ 3
Step-by-step explanation:
Round to the nearest thousand 11,621
Answer:
12,621
Step-by-step explanation:
when rounding there asking for the thousands therefore you have to look at the hundreds place and since there's a six in the hundreds place the one is going to change to a 2 the answer is 12,621
Can someone help me out ? Please ?
Answer:B
Step-by-step explanation:mark me as brainliest
Please only answer if you truly know I’m giving about 100 points for this that’s a hell of a lot of points for one question so answer right thank you!
step 1, move -5 on the left side to the right side and change the sign then add up with 55
step 2, multiply 20 by (10 - 13x) by the associative property
step 3, add the coefficient of the variable x on the left side and move 20 to the right side by changing its sign
step 4, move -34x to the left side by changing the sign then add up with -17x
step 5, to find the x value, move the x coefficient to the right side and divide it, you get the value
Please Look at the picture
Please help will put brainliest
Answer:
e^2v/2a^3y^7
Step-by-step explanation:
Please and thank you
Tom counted a total of 45 birds and squirrels at the park. There were 4 times as many birds as squirrels. How many birds did Tom count?
Answer:
9 squirrels and 36 birds
Step-by-step explanation:
4x+x=45
5x=45
x=9
4*9=36
Select the line segment.
A.
B.
C.
D
For how many different positive integers n is each of n, n+2, and n+4 a prime number?
Answer:
3,5,7
Step-by-step explanation:
odd numbers is a multiple of three, at least one of them can't be prime
hope this helps there is 1 of them
If points A,B and C are collinear, determine the value of x in the diagram.
Answer:
x equal four-teen... I'm pretty sure brainliest plsss
How do I write an equation that would allow someone to find the value of R
Answer:
R+239=3501
Step-by-step explanation:
Add the three 1,167 values together and you get 3,501. Then, because we know a portion of the three blocks is equal to 239, add it so when we solve for R, 239 is subtracted from the total.
As for solving it,
Subtract 239 on both sides, and R is 3501-239 = 3262
add the sum of 296 and 173 to their difference
What does 3g=
In math 8th grade
Answer:
3g can mean several things, depending on the context of the problem. g can be a variable, but it can also mean "grams"
Step-by-step explanation:
Need help !!!!!! !!!!!
Answer:
C is your answer
The length of a quarter is 0.955 inch. Round the length of a quarter to the nearest tenth of an inch
Answer:
the answer to the question is 0.96.
Answer:
1 inch
Step-by-step explanation:
the 9 is in the tenths place. 5 or more you need to round up.
hello please help will give brainliest
Answer:
c
Step-by-step explanation:
288/6 = 48
Hope this helps
Answer:
c.
Step-by-step explanation:
For ratio, u should divide
So, 288/6 = 48:1 or 48/1
6 times 48=288
Pls mark me brainliest
Kelly bought a pen for $2.50, a pencil for $0.36, a notebook for $3.75, and a highlighter for $1.99. She used a coupon for 10% off. How much did she spend in total?
original amount : 30, new amount : 45 what is the percent change
Answer:
50%
Step-by-step explanation:
Percent change = {(New-Old)/(Old)}*100%
So,
{(45-30)/(40)}*100
=(15/30)*100
=50%
Which of the following is the best estimate of the measure of the angle the skateboard makes with the ground ?
Answer:
Correct choice: C. 74.5
Step-by-step explanation:
Trigonometric Ratios
In every right triangle (those who have an internal angle of 90°), the six trigonometric ratios are valid. They relate the other internal angles with the lengths of the triangle.
The skateboard, the wall, and the ground form a right triangle. We need to find the measure of the angle formed by the skateboard with the ground. Let's call it β. In a right triangle, the cosine of an angle is defined as
[tex]\displaystyle \cos\beta=\frac{\text{adjacent leg}}{\text{hypotenuse}}[/tex]
The adjacent leg of β is the side with length 8 in, and the hypotenuse is the length of the skateboard, 30 in, thus:
[tex]\displaystyle \cos\beta=\frac{8}{30}}=0.267[/tex]
Using a digital calculator we find:
[tex]\beta=\cos^{-1}(0.267)[/tex]
[tex]\beta=74.5^\circ[/tex]
Correct choice: C. 74.5
2(x + 7) + 3x = 12 (given)
2x + 14 + 3x - 12 (?)
5x + 14 - 12 (simplify)
5x = -2 (subtraction)
x = -2/5(division)
What is the missing reason?
A)
Addition
B)
Subtraction
c)
Reflexive Property
D)
Distributive Property
Is this equation correct? 63 ⋅ 73 = 423
Yes; 63 • 73 is equal to (6 • 7)3 or 423.
Yes; 63 • 73 is equal to (6 • 7 • 3) or (42 • 3).
No; 63 • 73 is equal to (6 • 7 • 3) or (42 • 3).
No; 63 • 73 is equal to (6 • 7)3 + 3 or 426.
Answer: Yes; 63 • 73 is equal to (6 • 7)3 or 423.
Step-by-step explanation:This is the answer because if you multiply the 6 and 7 you get 42 and you leave the exponent which in this case is 3 leaving you with 42^3
Researchers at Mississippi State University were studying the impact of different environmental sounds on ecosystems. For their study, they created 333 similar ecosystems in their lab containing a variety of insects and plants. They randomly assigned each ecosystem to be exposed to rock music, country music, or a conventional city soundscape for two consecutive weeks. At the end of the study, they measured how successful the species were in each ecosystem. What type of experiment design is this?
Answer:
The experiment design used in this case is the between-subjected design.
Step-by-step explanation:
Between-subject design is a sort of experimental design where the individuals of an experiment are allocated to varied situations, with each individual being treated with only one of the experimental conditions.
In this case three similar ecosystems are designed containing a variety of insects and plants. Then each ecosystem to be exposed to rock music, country music, or a conventional city soundscape for two consecutive weeks.
Then after two weeks period they measured how successful the species were in each ecosystem.
The experiment design used in this case is the between-subjected design.
Answer:
A completely randomized design
Step-by-step explanation:
The 3 ecosystems were each randomly assigned a treatment. They were not grouped in any way with random assignment happening within each group, so this is a completely randomized design. (From Kahn)
Please help ASAP!! Will give brainliest if right
If DF ≈ DG, find mD.
A. 34°
B. 46°
C. 67°
D. 134°
Answer:
C : 67°
Step-by-step explanation:
The angles are equal to each other therefore they would all be the same measurement which is 67°
Hope this helps
Answer:
The answer is C.
Hope this helps
Round to the nearest whole number 30.76
Answer:
31
Step-by-step explanation:
The correct answer is 31.
Since 7 is greater than 5, you add a 1 in replace of the 0 to get 31.
Answer:
31
Step-by-step explanation:
30.76 is more then 30.50 therefore you round forward and get 31.
If the cost of college tuition in 2010 was $6016 and in 2014 was $9139, then the average rate of change in tuition during this time period was $781/year. Do you agree or disagree
If the cost of college tuition in 2010 was $6016 and in 2014 was $9139, then the average rate of change in tuition during this time period was $781/year. Do you agree or disagree?
To find the average rate of change during this time period, you need to divide the amount, in dollars, of the difference between the years and divide it by the number of years the time period was.
In 2010, the cost of the tuition was $6,016. In 2014, the cost of the tuition was $9,139. First, you need to subtract to find the difference in tuition.
[tex]9,139-6,016=3,123[/tex]
The increase in tuition for this time period is $3,123. Now, you need to find the number of years it took to increase by $3,123.
[tex]2010 \rightarrow2014 = 4 \text{ years}[/tex]
That means it took four years to increase by $3,123. Lastly, you need to find the average rate of change. You can find this by dividing the amount of dollars(the tuition increased by) by the number of years it took to increase.
[tex]\frac{\text{amount of dollars}}{\text{number of years}} = \frac{\$3,123}{4} = \$780.75[/tex]
That means the average rate of change during this time period was $780.75. Rounded to the nearest whole number, it would be $781. Therefore, you can agree that the average rate of change during this time was $781/year.
Answer:
I Agree
Step-by-step explanation:
That seems like a fair advantage for people planning to go to college!