Answers
Answer:
The expression is: [tex]-30n + 70 = -80[/tex]
Step-by-step explanation:
Given
[tex]n = 5[/tex]
Multiply both sides by 3
[tex]3 * n = 5 * 3[/tex]
[tex]3n = 15[/tex]
Subtract both sides by 7
[tex]3n - 7 = 15 - 7[/tex]
[tex]3n - 7 = 8[/tex]
Multiply both sides by -10
[tex]-10(3n - 7) = -10*8[/tex]
[tex]-30n + 70 = -80[/tex]
To verify: Substitute 5 for n
[tex]-30 * 5 + 70 = -80[/tex]
[tex]-150 + 70 = -80[/tex]
[tex]-80 =-80[/tex] ---- Verified
Related Questions
Select the correct answer.
Which equation is equivalent to the given equation?
-4(x-5)+8x=9x-3
Answers
Answer:
b, its the logical answer
Step-by-step explanation:
The value of the expression -4(x-5)+8x=9x-3 will be -5x = -23 The correct option is D.
What is an expression?
Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given expression is -4(x-5)+8x=9x-3. The solution to the expression is given below:-
-4(x-5)+8x=9x-3
-4x + 20 + 8x= 9x - 3
4x - 9x = -20 - 3
-5x = -23
Therefore, the value of the expression -4(x-5)+8x=9x-3 will be -5x = -23 The correct option is D.
To know more about an expression follow
https://brainly.com/question/723406
#SPJ2
please help but right answers
Answers
Answer:
51=-3x+6 -6
45=-3x ÷(-3)
-15=x
Step-by-step explanation:
prove me wrong
Answer:
r=-15
Step-by-step explanation:
51-(-3r+6)=0
3r-6+51=0
3r+45=0
3r=-45
r=-45/3
r=-15
6) Which of the following angles is coterminal with -495 degrees?
45 degrees
135 degrees
225 degrees
315 degrees
Answers
Answer:
225 degrees
Step-by-step explanation:
-495 +360 until you get to one of the answers.
A sports drink bottle contains 20 fluid ounces. Andre drank 80% of the bottle. How many fluid ounces did Andre drink? Show your reasoning.
Answers
Answer:
He drank 16 ounces
Step-by-step explanation:
Because you just make 80% a decimal 0.80. and you multiply that by 20. And you get 16
A giant tortoise moves at a slow but steady pace. It takes
the giant tortoise 3 seconds to travel 10.5 inches.
How many inches will the tortoise travel in 1 second?
Answers
Can some one plz help i will give BRAINLIEST.
If there is a 10% chance of a certain flower species having blue petals, then is it possible to observe only 85 flowers with blue petals in a field of 1000 flowers? Explain your reasoning.
Answers
Answer:
Yes
Step-by-step explanation:
10% chance does not mean it is always 10 percent. 10 percent is the theoretical property. The experimental probability can be different than the theoretical property.
At the end of school, Josh's teacher handed out 27 coupons for bowling during the summer to each student. The third week of
summer, he accidentally threw away 15 of them when he cleaned his room. The last week of summer, he decided to use the
remaining coupons evenly over 3 days.
If he did not use any of the coupons until the last week of summer, how many coupons did he use on each of the 3 days?
Answers
The answer would be 4 Coupons
What would you tip for a $22 meal if you wanted to leave 15%?
$18.70
$4.40
$3.30
$25.30
Answers
what is 100 x 1000? And Explain your reasoning for the brainliest.
Answers
Answer:
100000
Step-by-step explanation:
100,000 or one hundred thousand.
1000 = one thousand
If you have 100 one thousands then you will have one hundred thousand.
aka 100,000
so 100 x 1000 = 100,000
One hundred times one thousand equals one hundred thousand.
Someone please help! What is the domain and range of the relation?
Answers
Answer:
The domain is the set of all first elements of ordered pairs (x-coordinates).
The range is the set of all second elements of ordered pairs (y-coordinates).
Only the elements "used" by the relation or function constitute the range.
The side opposite from the right angle is called
Answers
Answer:
The side opposite from the right angle is called the hypotenuse.
Write an explicit formula for the sequence -13,-6,1,8, ...
A. an= -13n+7
B. an= -13+(n+7)
C. an= -13+7(n-1)
D. an= -13n+7
Answers
Answer:
7n-20 I believe
Step-by-step explanation:
hope this helps
Answer: A
lol need extra characters
i took the test btw
During a basketball game, the coach needs to select a player to make the free throw after a technical foul on the other team. There is a 68% chance that the coach will select you and a 26% chance that the coach will select your friend. What is the probability that you or your friend is selected to make the free throw?
Answers
For the probability of you or your friend add the probability of each together:
68% + 26% = 94% (0.94 if you need it as a decimal)
Answer: there's an 42 percent chance that your friend might make a free throw.
Step-by-step explanation: if u subtract u will get your answer that's bow i got this answer.
Which of these expressions equal 15 when x=1/2 and y=3? Circle all that apply. Please help with this my teacher need me to work out xy+3 1/2+20x Btw guys 3 1/2 are mixed numbers if your wondering
Answers
Answer:
15
Step-by-step explanation:
First you would replace the x and y's with 1/2 and 3.
So it would look like: (1/2) (3) + 3 1/2 + 20 (1/2)
Next, you go by PEMDAS (parenthesis, exponents, multiplications, division, addition, subtraction)
So you would first multiply and the parenthesis that I added mean multiplication.
1.5 + 3.5 + 10
So then all that is left to do is add because I multiplied everything out.
So it is 5 + 10 which is 15
What is 1/4 times 24.80
Answers
Answer:
6.2 is the answer you are looking for
This trip the family will spend $117.96. The next trip they will spend $119.27. This is an increase of ($117.96 − $119.27) or an increase of $1.31.
What is the percent of increase?
Round your answer to the nearest whole percent. Type your answer into the space.
Answers
Answer:
1.11055% increase
Answer all questions and the topic is about ordering decimals and don't answer if u do not know.
Answers
Answer:
31. 0.93, 0.9, 0.33
27. 6.13, 6.14, 6.31
28. 3.09, 3.19, 3.9
29. 12.96, 12.83, 12.8
25. 9.06, 9.6, 9.66
26. 0.09, 0.67, 0.86
Step-by-step exp
3d - 5+4d +5=140 how do i solve this i need help
Answers
Answer:
3
−
5
+
4
+
5
=
1
4
0
3d{\color{#c92786}{-5}}+4d+{\color{#c92786}{5}}=140
3d−5+4d+5=140
3
+
4
=
1
4
0
3d+4d=140
3d+4d=140
2
Combine like terms
3
+
4
=
1
4
0
{\color{#c92786}{3d}}+{\color{#c92786}{4d}}=140
3d+4d=140
7
=
1
4
0
{\color{#c92786}{7d}}=140
7d=140
3
Divide both sides of the equation by the same term
7
=
1
4
0
7d=140
7d=140
7
7
=
1
4
0
7
\frac{7d}{{\color{#c92786}{7}}}=\frac{140}{{\color{#c92786}{7}}}
77d=7140
4
Simplify
Cancel terms that are in both the numerator and denominator
Divide the numbers
=
2
0
d=20
d=20
Solution
=
2
0
hope it help
Step-by-step explanation:
Answer:
the answer is 20
Step-by-step explanation: combine like terms
7d = 140
then divide
140/7
20
The math clubs car can travel 9 meters in a second. The race track for the soap box derby is 63 meters long. How many seconds will it take the Math clubs car to make it around the track
Answers
Answer: it will take 7 seconds
Step-by-step explanation: 9 x 7 = 63
Find the quotient: 8,358 ÷ 27 = ________.
309 r 15
309 r 26
310 r 15
310 r 26
Answers
Answer:
the answer is 309 r 15
Step-by-step explanation:
309 × 27 is 8343 and your left with 15
HELP PLS! ILL MARK BRAINLIEST!
Sean drink a slushy as fast as he could. The amount of Slushii left in a cup (in milliliters) as a function of time (in seconds) is graphed. How fast did Sean drink the slushy?
A. 8 mL per second
B. 0.8 mL per second
C. 1 mL per second
D. 10 mL per second
Answers
An SAT prep course claims to improve the test score of students. The table below shows the scores for seven students the first two times they took the verbal SAT. Before taking the SAT for the second time, each student took a course to try to improve his or her verbal SAT scores. Do these results support the claim that the SAT prep course improves the students' verbal SAT scores?
Let d=(verbal SAT scores prior to taking the prep course)−(verbal SAT scores after taking the prep course)d=(verbal SAT scores prior to taking the prep course)−(verbal SAT scores after taking the prep course). Use a significance level of α=0.1 for the test. Assume that the verbal SAT scores are normally distributed for the population of students both before and after taking the SAT prep course.
Student 1 2 3 4 5 6 7
Score on first SAT 500 380 560 430 450 360 560
Score on second SAT 540 470 580 450 480 400 600
Required:
a. State the null and alternative hypotheses for the test.
b. Find the value of the standard deviation of the paired differences. Round your answer to one decimal place.
c. Compute the value of the test statistic. Round your answer to three decimal places.
d. Determine the decision rule for rejecting the null hypothesis. Round the numerical portion of your answer to three decimal places.
e. Make the decision for the hypothesis test.
Answers
Answer:
Since the calculated value of t = -0.215 falls in the critical region so we accept Ha that SAT prep course improves the students' verbal SAT scores and reject the null hypothesis at significance level 0.05.
e. These results support the claim that the SAT prep course improves the students' verbal SAT scores.
Step-by-step explanation:
Student 1 2 3 4 5 6 7
Score on first SAT 500 380 560 430 450 360 560
Score on second SAT 540 470 580 450 480 400 600
Difference d -40 -90 -20 -20 -30 -40 -40 ∑ -280
d² 1600 8100 400 400 900 1600 1600 ∑14600
a. Let the hypotheses be
H0: ud= 0 against the claim Ha: ud ≠0
The degrees of freedom = n-1= 7-1= 6
The significance level is 0.05
The test statistic is
t= d`/sd/√n
The critical region is ║t║≤ t (0.025,6) = ±2.447
d`= ∑di/n= -280/7= -4
Sd²= ∑(di-d`)²/n-1 = 1/n-1 [∑di²- (∑di)²n]
= 1/6[14600-(-4)²/7] = [14600-2.2857/6]= 2432.952
b. Sd= 49.3249= 49.325
Therefore
c. t= d`/ sd/√n
t= -4/ 49.325/√7
t= -4/18.6435 = -0.2145= -0.215
d. Since the calculated value of t = -0.215 falls in the critical region so we accept Ha that SAT prep course improves the students' verbal SAT scores and reject the null hypothesis at significance level 0.05
e. These results support the claim that the SAT prep course improves the students' verbal SAT scores.
Which of the following is a factor of x^4 - 5x^3 + 3x^2 + 15x - 2
A. 2x+3
B. x-3
C. 3x+1
D. Not factorable
Answers
Answer:
D. Not factorable
Step-by-step explanation:
choir is selling Pringle chips to raise money for a field trip. The container has a diameter of 9 inches and a height of 32 inches . Which equation can be used to find the volume of the container?
1,,,,,,,V=pi(9)
2,...... V=pi(9)^2(32)
3,........V=pi(4.5)^2(32)
4,........V=pi(4.5)(32)
Please does anyone know the answer?
Answers
Answer:it’s V=pi(4.5)^2(32)
Step-by-step explanation:
The equation which can be used to find the volume of the container of Choir who is selling Pringle chips, is
[tex]V=\pi (4.5)^2(32)[/tex]
What is of volume of cylinder?Volume of cylinder is the amount of quantity, which is obtained by it in the 3 dimensional space.
Volume of cylinder is the can be given as,
[tex]V=\pi r^2h[/tex]
Here, (r) is the radius of the base of the cylinder and (h) is the height of the cylinder.
Choir is selling Pringle chips to raise money for a field trip. The container has a diameter of 9 inches and a height of 32 inches.
As the radius is half of the diameter. Thus, the radius of the container is,
[tex]r=\dfrac{9}{2}\\r=4.5\rm\; in[/tex]
As this container is in the shape of cylinder. Thus, the volume of container can be found out using the above formula as,
[tex]V=\pi (4.5)^2(32)[/tex]
Hence, the equation which can be used to find the volume of the container of Choir who is selling Pringle chips, is
[tex]V=\pi (4.5)^2(32)[/tex]
Learn more about the volume of cylinder here;
https://brainly.com/question/12748872
Twins Isaac and Isaiah were just born. Isaac weighs 6666 pounds 2222 ounces and Isaiah weighs 5555 pounds 4444 ounces.
Answers
Step-by-step explanation:
Kindly make the question clearer for assistance
a man goes 10m due east and 24m due north find the distance from the starting(pls help )
Answers
Answer:
26m
Step-by-step explanation:
10^2+24^2=26^2
plx help i need to get this so I can be ungrounded
Answers
Answer:
2
Step-by-step explanation:
(1/2(7x3))^3= plz help
Answers
Answer:
1/2 X 7 X 3 X 3 = 31.5
Step-by-step explanation:
Which polynomial can be factored using the binomial theorem?
81x2 + 117x + 169
81x2 + 234x + 169
6,561x4 – 9,477x3 + 13,689x2 – 19,773x + 28,561
6,561x4 – 18,954x3 + 27,378x2 – 39,546x + 28,561
Answers
Answer:
B.) 81x2 + 234x + 169
Step-by-step explanation:
I NEED HELP THIS IS DUE IN THIRTY MINUTES
convert decimals to fractions
1.167
2.4
1.75
Answers
Answer:
1167/1000
24/10
175/100
Step-by-step explanation:
1.167
we consider the point is equal to 1. After that point, all numbers, we consider as zero.
so, the answer would become:
1167/1000