The required answers by solving two-step equations are:
Q1. The solution of equation 1 - 7b = -20 is b = 3
Q2. The solution of equation -k - 5 =20 is k = -5
Q3. The solution of equation-1 + 8a = -129 is a = -16
Q1. Solve 1 - 7b = -20
To solve this equation, we will isolate the variable b by performing two steps.
Step 1: Subtract 1 from both sides of the equation:
1 - 1 - 7b = -20 - 1
-7b = -21
Step 2: Divide both sides of the equation by -7 to solve for b:
(-7b) / -7 = (-21) / -7
b = 3
Therefore, the solution to the equation 1 - 7b = -20 is b = 3.
Q2. Solve -k - 5 = 0
To solve this equation, we will isolate the variable k by performing two steps.
Step 1: Add 5 to both sides of the equation:
(-k) - 5 + 5 = 0 + 5
-k = 5
Step 2: Multiply both sides of the equation by -1 to solve for k:
(-k) * (-1) = 5 * (-1)
k = -5
Therefore, the solution to the equation -k - 5 = 0 is k = -5.
Q3. Solve -1 + 8a = -129
To solve this equation, we will isolate the variable a by performing two steps.
Step 1: Add 1 to both sides of the equation:
(-1) + 1 + 8a = -129 + 1
8a = -128
Step 2: Divide both sides of the equation by 8 to solve for a:
(8a) / 8 = (-128) / 8
a = -16
Therefore, the solution to the equation -1 + 8a = -129 is a = -16.
Therefore, the required answers by solving two-step equations are:
Q1. The solution of equation 1 - 7b = -20 is b = 3
Q2. The solution of equation -k - 5 =20 is k = -5
Q3. The solution of equation-1 + 8a = -129 is a = -16
Learn more about solving two-step equations.
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While on a plane, Charlie counted the number of adults, children, and empty seats. 1/5 of the seats were occupied by children.
3/4 of the seats were occupied by adults.
10 seats were empty .
A. How many passenger seats were on the plane
B. Write how you figured it out
Answer:
200 seats
Step-by-step explanation:
Let s = numbers of seats
1/5s = children
3/4 s = adults
10 = empty
The total number of seats = children + adults + empty
s = 1/5s + 3/4s + 10
Subtract 1/5s and 3/4s from each side
s -1/5s -3/4s= 1/5s-1/5s + 3/4s-3/4s + 10
s - 1/5s - 3/4s = 10
Get a common denominator
20s/20 - 4s/20 -15s/20 = 10
Combine like terms
1s/20 = 10
Multiply each side by 20
s/20 *20 = 20*10
s = 200
Answer:
19 seats
Step-by-step explanation:
you take the denominators: 5,4, and 9
then you add them to get 19.
Which expression represents five less a third of a number?
Answer:
A
Step-by-step explanation:
Answer:
The first option is the answer
hope this helps
have a good day :)
Step-by-step explanation:
2b to the third power +5 when b=3
I need the answer like now pls
Answer:
[tex]{ \tt{2b {}^{3} + 5}} \\ = { \tt{2 {(3)}^{3} + 5 }} \\ = { \tt{59}}[/tex]
Answer:
59
Step-by-step explanation:
We know, b=3
So, 2b³+5
= 2×3³+5
=54+5
=59/ (Ans.)
An archeologist discovered two artifacts buried beneath the ground. She found the first artifact at an elevation of meters and the second at an elevation of meters. What is the distance between these two elevations?
A.
meters
B.
meters
C.
meters
D.
meters
Answer:
Answer: B
Step-by-step explanation:
Enjoy
plz help someone helpsssss
Answer:
MAD stands for mean absolute deviation so 79.4 is the mean. The MAD should be zero 0
Step-by-step explanation:
We find MAD by "Taking each number in the data set, subtract the mean, and take the absolute value. Then take the sum of the absolute values. Now compute the mean absolute deviation by dividing the sum above by the total number of values in the data set. Finally, round to the nearest tenth."-Ixl
So your Mean Absolute Deviation should be 0 zero.
Please mark as Brainliest
Hoped this helped
Of 15 people, 9 wore sandshoes, 8 wore shorts and 3 wore neither sandshoes nor shorts
1. How many people wore both sandshoes and shorts?
2. How many people wore shorts but not sandshoes?
Answer:
1. 0 2. 8
Step-by-step explanation:
Answer:
1. 0
2. 8
Step-by-step explanation:
In an orchard, there are 17 apple trees, 28 orange trees, and a cherry tree. What is the ratio of apple trees to cherry trees?
Answer:
17:1
Step-by-step explanation:
there are 17apple trees n one cherry tree that's y it's 17:1 'a'means 1
17:1
It's literally so simple. You have 17 apple trees and one cherry tree. Did you even read the question?
(Trigonometry question)
Answer:
is the answer 7/25 ? i got 7/25
Answer:
7/25 is the answer
Step-by-step explanation:
sin ○ = opp/ hyp
sin ○ = 7 /25
help me with this please
Answer:
ok dscaad
Step-by-step explanation:
ok rgeddx
Create 5 word problems using the equations provided. Each word problem should have a maximum of 2 to 3 sentences. Solve your word problem. Be sure to provide the equation for the word problems you are creating.
This is a word problem for 12.
Laura decided to throw a party. The DJ charged 2 dollars an hour and 4 dollars to use lights and fog. How long did the DJ play?
This one is for 11.
Kate wanted to go skating. When she got there it was 4 dollars an hour. The total cost was 12 dollars. How many hours did she skate?
Yuoyoyoyoyoyoyoy HELP!!!
Answer:
x = 1.2
Step-by-step explanation:
Essentially, because ABCDE and JKLMN are similar, their corresponding sides have a common ratio. To find x, we can simply the ratio between NJ and its corresponding side equal to the ratio of another pair of corresponding sides.
[tex]\frac{BA}{KJ}=\frac{AE}{JN}[/tex]
[tex]\frac{3}{1.8}=\frac{2}{x}[/tex]
3x = 3.6
x = 1.2
T-T this took waaaaaay too long to be helpful but I hope it is anyways!
Pleaseeeeeee help mee i will give u brainliest
Answer:
erosion
Step-by-step explanation:
Fill in the blank for the statement below: If a similar figure has been enlarged, the scale factor is a number that is ___________________.
Answer:
bigger ???
Step-by-step explanation:
tryyyyy hardddddd!!!!!!!!!!
Answer:
Step-by-step explanation:
980
Describe the figure that is created with the points (-2, -3), (-2, 5), (1, -3) and (1, 5).
right triangle
rectangle
scalene triangle
square
The figure created with the points (-2, -3), (-2, 5), (1, -3) and (1, 5) is a rectangle.
Which shape is a rectangle?A rectangle is oblong. It has two pairs of parallel sides and four right angles. A rectangle can also be known as an equiangular quadrilateral. This is because a rectangle is a quadrilateral shape (4-sided shape) that has parallel sides, equal to one another, and all 4 corners have angles that are 90º.
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A Middle School takes a poll to find out what students want to eat at lunch. 70 students from 8th Grade are randomly chosen to answer the poll questions. Identify the population and sample?
Answer:
population: 8th grade
sample: 70
Population of middle school is 8th grade and sample is 70.
Here, 70 students from 8th grade are randomly chosen to answer the poll questions for find out what student want to eat at lunch.
What is population?
Population is known as a group of individuals, objects, events, organizations etc.
In middle school 70 students are chosen to answer the poll question.
So sample of middle school is 70 and population is 8th grade.
Learn more about the Population visit:
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PLS HELP ASAP!!!! will give brainiest
Answer:
I dont know
Step-by-step explanation:
I need to know what questions you need done because all of them is a lot.
plese help me with this
Answer:
there is a 1/2 chance to get heads again
Step-by-step explanation:
im not entirely sure tho
Answer for free Brainly coins and brainliest later URGENT! :)
Answer:
36
Step-by-step explanation:
Answer:
In total there are 36 girls.
Step by step explanation:
We apply the proportion.
for every 2 boys there are 3 girls, therefore the rule of three simple applies.
2 boys 3 girls
Boys ??? girls
it is multiplied crossed where both ends have data, and the result is divided by the remaining number, being:
3 x 24 = 72
72/2 = 36
trying to get missing assignments done
Answer:
The answer to this question is B
Step-by-step explanation:
I hope it helps
Please Answer this asap
Please help! Use the geometric mean theorem to solve.
Answer:
15.41
16.28
17.28
19.30
Step-by-step explanation:
god bless stay safe po
Refer to the image below.
Answer:
Median and mode because it is the digit in the middle aka the median and because it is the number that it is the most repeated aka the mode
Step-by-step explanation:
2/3 a - 1/6 = 1/3
answer this math question asap pls
Answer:
a=3/4
Step-by-step explanation:
1. Get 2/3a by itself.
•Turn 1/3 to 2/6 by multiplying 1/3 by 2/2.
•Because you only add and subtract like denominators
This will make it look like:
2/3a - 1/6 = 2/6
Then, add 1/6 to both sides to get 2/3a by itself.
It'll look like this:
2/3a = 3/6
2. Get a by itself.
•Multiply the reciprocal (opposite) of 2/3 to get a alone.
This will look like:
(3/2) • 2/3a = (3/2) • 3/6
a = 18/24
3. Simplify.
Find the largest number that can simplify the equation.
For example, 18 ÷ 3 = 6, and 24 ÷ 3 = 8.
But the largest number you can divide both sides by is 6.
18 ÷ 6 = 3 and 24 ÷ 6 = 4.
3/4.
Two step equation - integer
Solve -1 + x/6 = -2 (Show your work!)
Answer:
Step-by-step explanation:
x/6 - 1 = -2
x/6 = -1
x = -6
Brainliest have to be in the surface area
I have given a token of appreciation. You have to claim it quickly or else answers sports will run out. Your Welcome
Thanks bro, i appreciate it :]
In Triangle OPQ, Side PQ ≅ Side OP, and ∠O=37°. Find ∠P.
help please i dont get this :( answer both of them please!
Answer:
54, 60
Step-by-step explanation:
The equation for a triangle is 1/2LW= A. So multiply the length (12ft) and the height (9ft), then divide it by half: 12x9=108, 108/2=54. For the parallelogram, you solve it the same way you solve a rectangle, LW=A. The height is the along dotted line with the right angle, going up the side of the parallelogram with give you the wrong answer. 6x10=60 (posting as an answer, originally in the comments)
John received a 68%, 72%, and 85% on three of his math tests. After his fourth math test he now has a 79% average. What score did he have received on his fourth test?
A) 79%
B) 89%
C) 91%
D) 100%
PLEASE EXPLAIN WHY OR I WILL RATE TWO STARS!
Answer:
68+72+85=225
plus 79 =304 divided by 4 = 76
plus 89 =314 divided by 4 = 78.5
plus 91=316 divided by 4 = 79
so the answer is C
plz brainlest
Answer:
91%
Step-by-step explanation:
(0.68 + 0.72 + 0.85 + x)/4 = 0.79
(2.25 + x)/4 = 0.79
0.5625 + 1/4x = 0.79
1/4x = 0.2275
x = 0.91 = 91%