Answers
Answer:
a = 6
Step-by-step explanation:
120 = 3 + 3(7a - 3) (by PEDMAS, expand parentheses first by distributive property)
120 = 3 + 7a(3) - 3(3)
120 = 3 + 21a - 9
120 = 21a - 6 (add 6 to both sides and rearrange)
21a = 120 + 6
21a = 126 (divide both sides by 21)
a = 126/21
a = 6
Step-by-step explanation:
120-(3+3*(7*a-3))=0
Step by step solution :
STEP
1
:
Equation at the end of step 1
120 - (3 + 3 • (7a - 3)) = 0
STEP
2
:
STEP
3
:
Pulling out like terms :
3.1 Pull out like factors :
126 - 21a = -21 • (a - 6)
Equation at the end of step
3
:
-21 • (a - 6) = 0
STEP
4
:
Equations which are never true:
4.1 Solve : -21 = 0
This equation has no solution.
A a non-zero constant never equals zero.
Solving a Single Variable Equation:
4.2 Solve : a-6 = 0
Add 6 to both sides of the equation :
a = 6
One solution was found :
a = 6
Related Questions
Eight bowls cost $160, but Adrien wants only 5 of them so how much does he have to pay?
Answers
Answer:
$100
Step-by-step explanation:
you have eight bowls so you divide 160 by 8 and you get 20 so each bowl is 20 so 5x20=100
Answer:
100
Step-by-step explanation:
First, calulate the cost of each bowl, so, 160/8=20
Next, calculate how much total it costs, so 20x5, which the answer is $100
A university has 40,140 students. In a random sample of 210 students, 14 speak three or more languages. Predict the number of students at the university who speak three or more languages.
Answers
Answer:
2676 students
Step-by-step explanation:
Total number of students =. 40,140
During study:
Sample size = 210
Number of samples who speak 3 or more languages = 14
Proportion who speak 3 or more languages :
14 / 210 = 0.0666666
Applying the proportion to the total. Population :
0.0666666 * total number of students
0.0666666 * 40140
= 2675.997324
= approximately 2676 students
PLS HELP ASAP
Which expression shows the result of applying the distributive property to 9(2+5m)?
18+45m
2+45m
11+14m
18+5m
Answers
Answer:
18+45m
Step-by-step explanation:
9x2= 18
9x5m= 45m
18+45m
I got it roght on the assignment
1. What is the formula for Pythagorean Theorem
2. What does the A represent
3. What does the B represent
4. What does the C represent
5. Pythagorean Theorem can be used with what SPECIFIC shape?
6. If A= 4, and B = 5, what is length of the hypotenuse? Show all work
Answers
Answer:
The formula is a^2 + b^2 = c^2
Step-by-step explanation:
A and B are legs and C is the hypothunisis.
The theorem is used for triangles.
4^2 + 5^2 = c^2
16 + 25 = c^2
41 = c^2
sqr(41) = sqr(c)^2
c = 6.403124237
I need help fast! What is the square root of 9x^12? And 18x^7? And 25x^18 y^14? And 50x^9 y^19? Sorry I know it's a lot but I need it quick!
Answers
Answer:
Answer:
The principal, real, root of:
9–√2
=3
All roots:
3
−3
9 is a perfect square
Answer:
The principal, real, root of:
25−−√2
=5
All roots:
5
−5
25 is a perfect square
Step-by-step explanation:
the first one is for the 9 and the second one is for the 50
Y=91 if x is 4 what is y
Answers
Answer:
y=91
.........???????
find the radius of each circle with the given dimensions. d = 29 m
Answers
Answer:
14.5
Step-by-step explanation:
The radius is half the diameter.
29/2=14.5
Decide whether the two expressions are equivalent for each problem below.
If they ARE equivalent, explain why.
If they ARE NOT, provide the reason why the two expressions are not equivalent.
A) -8(x+7) and -8x-7
B) 6x and 4x+2
C) 15-4x and - 4x +15
D) 7(x+10) and 7x+70
Answers
Zainab has 25 beads.
She gives 6 of the beads to Lucy.
What fraction of the 25 beads does Zainab have now?
Give your answer in its simplest form.
Answers
Answer:
19/25 it cant simplified
Step-by-step explanation:
Solve by factoring and the square root method, SHOW ALL WORK.
Answers
Answer:
Not sure
Step-by-step explanation:
If y = x + 3, what is y if x = 4?
Answers
Answer:
7
Step-by-step explanation:
y = x+3
y = 4+3
y = 7
brainlist plz
Hiro painted his room. After 3 hours of painting at a rate of 8 meters per hour, he head 28 square meters left to paint.
Answers
Answer:
3 hours x 8 meters = 24 meters + 28 meters = 52 meters
52 / 3 = 17 and 1/3 hours.
Brainiest plz? :)
can you kindly help me out please?!
Answers
Answer:
32h^7
Step-by-step explanation:
(4h^4)3=64h^12
64h^12/2h^5=
32h^12/2h^5=32h^7
Hope this helps :)
help Video
What is an equation of the line that passes through the points (2, 2) and (-2,8)?
Answers
y-2=-3/2(x-2)
y-2=-3/2x+3
y=-3/2x+5
Multiply (2x + y = 20) by 5 and you get
Answers
Answer:
10x +5y = 100
Step-by-step explanation:
Ig not sure
At the mall in Miami, Roberto found a jacket he liked. The normal price was $120, but the jacket was on sale for 40% off. If Roberto has $50 to spend, does he have enough to buy the jacket? If not, how much more money does he need?
Answers
Answer: No, He will need $22 to add to his money to buy jacket.
Step-by-step explanation:
Normal price of jacket =$120,
New price = 40% off which means 40% Less than the Normal price
= 40/ 100 x 120
=0.4 x 120 = 48; 120 -48= $72
New Price = $72
Therefore Roberto with $50 to spend does not have enough to buy the jacket
He will need $72- $50 =$22 to add to his money to buy jacket.
Which of the following is a common denominator of 3/4 and 1/5
a.35
b.20
c.15
d.30
Answers
Answer:
b.20
Step-by-step explanation:
brainliest please
Answer:
The answer is 20
Step-by-step explanation:
any help *more than one answer*
Answers
Answer:the first one and the fourth one
Step-by-step explanation:
16. A fifteen passenger van is rented for a family vacation. The van rental is $75.00 per day, plus a $160.00 insurance fee. Which equation could be used to find x, the number of days the car be rented if they want to spend exactly $760.00 on the van rental?
A. 75.00 + 160.00x = 760 00
B. 75.00x - 160.00 = 760.00
C. 75.00 - 160.00x = 760.00
D. 75.00x + 160.00 = 760.00
Answers
Answer:
Step-by-step explanation:
D
I NEED HELP
Ann receives a 4% commission on her sales. Her last paycheck included $196 in commissions. Solve the formula C = 0.04s for s, where C is the amount of commission and s is the amount of sales. Then substitute to find her sales.
A.
$195.96
B.
$196.04
C.
$7.84
D.
$4,900
Answers
Answer:
D-$4,900
Step-by-step explanation:
Answer:
The answer is D. $4,900
Step-by-step explanation:
$196 in commissions => a = 196
s = a / 0.04 = 196 / 0.04 = $4900 = Ann's sales
so the answer for Ann's sales is $4,900
3
8 If xty 10 and - y = 6. What is the value of x
-y² ?
(.520 d-520
a 604
b. 504
Answers
Answer:
je sais pas miskine eu débrouille.toi demande à ton papa de t'aider ne pleure pas stp si pleure tu fera moins pipi au lit bisous
What is the value of x? Enter your answer in the box.
Answers
Find the probability of rolling a 3 when you toss two fair 6-sided dice and add the result from each die.
Answers
Answer:
would it be 2/12 or 1/6 of a chance of getting a three
Evaluate ∛-512 Use pencil and paper. Explain how you can check that your result is correct. Show your work.
nothing (Type an integer or a simplified fraction.)
Answers
Answer:
3√512 = 8
Step-by-step explanation:
Step 1: Find the prime factors of 512
512 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2
Step 2: Pair the factors of 512 in a group of three, such that they form cubes.
512 = (2 × 2 × 2) × (2 × 2 × 2) × (2 × 2 × 2)
512 = 23 × 23 × 23
Using the law of exponent, we get;
512 = 29 [am.an = (a)m+n]
Or
512 = (23)3 [(am)n = amn]
512 = 83
Step 3: Now, we will apply cube root on both the sides to take out the factor (in cubes) as a single term.
3√512 = 3√(83)
So, here the cube root is eliminated by the cube of 8.
Hence, 3√512 = 8
NEED HELP WITH MATH !
Answers
Answer:
1.50 liter/hr
Step-by-step explanation:
using;
[tex] \frac{6 - 3}{4 - 2} [/tex]
=3/2= 1.50 liter/hr
I’m confused about this question
Answers
12. Find the values of x, y, and z.
(1 point)
Answers
Answer:
b. x = 80, y = 100, z = 63
Step-by-step explanation:
3a + 7 + 2(3 + a)
[tex]what \: is \: anwser[/tex]
Answers
Answer:
5a + 13
Step-by-step explanation:
3a + 7 + 2(3 + a)
3a + 7 + 6 + 2a
5a + 13
Alexandra's drafting class is building a scale model of the school's courtyard. Alexandra chose to make a model of a campus oak tree for the assignment as shown. The tree is 10 yards tall and the base of the tree is 5 yards away from the edge of a park bench. She calculated that her oak tree model should be 0.4 yards tall. What is the distance, in yards, from the base of the model tree to the edge of the model bench?
Answers
Answer:
It's 0.20
Step-by-step explanation:
The distance between the base of the model tree to the edge of the model bench is 0.2 yard.
Similar triangle :A diagram is attached which describe the statement of question.
From diagram attached below, It is observed that both triangles are similar triangles.
The ratio of corresponding sides are same in the similar triangles.
the distance between the base of the model tree to the edge of the model bench is x.
[tex]\frac{5}{x}=\frac{10}{0.4}\\ \\ 10x=2\\\\x=2/10=0.2yard[/tex]
Learn more about the similar triangles here:
https://brainly.com/question/14285697
Evaluate -41-41.=
-8
08
16
-16
Answers
Answer:
are you sure those are all the options because it is -82
Step-by-step explanation: