Answer:
z = -9
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Algebra I
Terms/Coefficients/DegreesStep-by-step explanation:
Step 1: Define
-21 = z - (-6 - 2z)
Step 2: Solve for z
Distribute negative: -21 = z + 6 + 2zCombine like terms: -21 = 3z + 6Isolate z term: -27 = 3zIsolate z: -9 = zRewrite: z = -9Answer:
Step-by-step explanation
-21-6=2z+z
Or,-27=3z
Or,z=-9
Joshua borrows $300 from his older sister to buy a bike. He promises to pay the total amount plus 5% simple interest in one year. How much will Joshua
What is the equation of this line in standard form?
A. 6x−7y=17
B.11x−6y=13
C.6x−11y=13
D.6x−11y=−13
Answer:
A. 6x- 7y= 17
Step-by-step explanation:
Which of the following numbers is written in scientific notation?
A. 17
B. 17 × 106
C. 3.734 × 10–14
D. 3.734
Answer:
i think is b
Step-by-step explanation:
ASAP PLS ANSWER I DEAD
Answer:
Variables: you are correct
Coefficients: -2
Constant: 3/7
Step-by-step explanation:
Variables are letters used in math so you were correct.
Coefficients are numbers with a variable. So to find the coefficient you would look for a number "connected" to a variable. This would be -2 because it is being subtracted from the first term.
The constant is 3/7 because you could put it on a number line.
At Breakfast Break, 2 eggs and 1 sausage patty cost $2.23 and 3 eggs with 2 sausage patties cost $3.76. Assuming that these amounts only pay for the eggs and sausage, how much does one sausage patty cost?
Cost of one sausage patty is $0.83.
What is an equation?An equation is a combination of different variables, in which two mathematical expressions are equal to each other.
Given that,
Cost of 2 eggs and 1 sausage patty = $2.23,
Cost of 3 eggs and 2 sausage patties = $3.76.
Write above expression in equation form,
2 eggs + 1 patty = 2.23 (1)
3 eggs + 2 patties = 3.76 (2)
To find the cost of patty, multiply equation (1) with 3 and equation (2) with 2,
6 eggs + 3 patties = 6.69 (3)
6 eggs + 4 patties = 7.52 (4)
By solving equation (3) and (4)
1 patty = 0.83
The cost of 1 sausage patty is $0.83.
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Last year there were 205 ducks living on the pond. This year there are 20% more ducks living on the pond. How many ducks are living on the pond this year? *
An airplane 30,000 feet above the ground begins descending at a rate of 2,000 feet per minute. Write an equation to model the situation.
What are the slope and Y-intercept?
Answer:
7
Step-by-step explanation:
Answer:
Slope: -2000
Y-intercept: 30000
Equation: Y=-2,000x+30,000
Step-by-step explanation:
The pane starts at 30,000 feet, giving up an y intercept or a starting point. Since the plan is descending, you know the slop will be negative.
pleasee help ill give brainliest
Ms. Gartland bought x number of shirts for the new members of her chorus. The cost for x number of shirts, including $3.99 shipping, was $77.49. Each shirt cost $12.25. There was no sales tax on this purchase. Which equation could be used to find x?
Answer:
The answer is 6 shirts
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
Need some help here please
what is the nearest whole percent of 45
Answer:
Step-by-step explanation: 45% based on the way you state the question. 45% is a whole percent.
A rectangular prism is shown below. What is the lateral surface area?
Answer:
the answer is 110 because 5 times 2 equals 10 and 10 times 11 is 110
Answer:
2(11)(5)+2(11)(2)+2(2)(5)=110+44+20=174
174 Square Centimetres
Please help with math
Answer:
Ok here are the answers:
6: B
7: B
8: C
9: D
10: A
Have a good day! :)
Answer:
Step-by-step explanation:
6 is B (second)
7 is B (second)
8 is C (third)
9 is D (last)
10 is A (first one)
One stamp is randomly selected from a 10-by-10 sheet of 100 stamps. What is the probability that the stamp selected is not along an outer edge? Express your answer as a common fraction. Plz answer as soon as possible... thx!
The required probability of not stamp not along an outer edge is 8/25.
What is a fraction?A fraction is a numeral that represents a rational number.
Let a and b be two numbers, then their fraction can be represented as a/b.
Given that,
Total numbers of stamp in a stamp sheet of 10 by 10 = 100,
On one edge there would be 10 stamps but on each diagonal there will be 1 stamp common,
Therefore, total number of stamps on outer edge will be = 9 x 4 = 36
Remaining stamps = 100 - 36 = 64
The fraction value of 64 out of 100 = 64 / 100 = 8 / 25
The required fraction value of stamps is 8 / 25.
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someone plz help im giving out brainliest ;)
Answer: the slope means the triangle have a side length of 3 and the slope means that the equilateral triangle have a perimeter of 0.
Step-by-step explanation:
Hope this helps ;)
please help 50 points
Alicia rented bowling shoes for $3 and played 4 games at $2 each. Write and
evaluate an expression for the total cost of bowling.
What is one constant of proportionality for this situation? *
Answer:
The constant of proportionality is the ratio between two directly proportional quantities. In our tomato example, that ratio is $3.00/2, which equals $1.50. Two quantities are directly proportional when they increase and decrease at the same rate.
Step-by-step explanation:
By how much did the price of the stock change from the beginning of Week 1 to the end of Week 4?
Answer:
It changed by 1.2
Step-by-step explanation:
1.5 divided by 1.25 equals 1.2
1.25 times 1.2 equals 1.5
Hope I helped!! :)
Sorry if it's wrong! :(
Pls mark brainlist!!!
Answer:
um you add then you i dont know to how to explain this
Step-by-step explanation:
A right triangle has a hypotenuse of length 13 in. and a leg with length 4 in. What is the length of the other leg?
Answer:
Solution,
Let the hypotenuse of the right triangle be 'a' and its legs be 'b' and 'c'.
Here, a= 13, b = 4 and c=?
Using Pythagoras or Gogou theorem,
a² = b² +c²
or, 13² = 4² +c²
or, c² =153
or, c = 3√17 inch
alan is converting large and small numbers from standard notation to scientific notation. group the numbers according to their powers of 10
Answer:
i am kind of confused by the question but i would say to but all the numbers below 1 in the 10^-4 section and the numbers above 1 in the 10^6.
i might be wrong i don't what the question is really.
Step-by-step explanation:
Alan is converting large and small numbers from standard notation to scientific notation
10⁶ = 4.03 x 10⁶, 2.93 x 10⁶, 5 x 10⁶
10⁻⁴ = 1.2x 10⁻⁴, 6 x 10⁻⁴, 5.9 x 10⁻⁴
What is the scientific notation of a number?The standard form for a number is a method by which we write number in a format like b×10ˣ. The value of b should be in between 0 to 10.
Given that,
The numbers,
0.00012, 4030000, 2930000, 0.0006, 5000000, 0.00059
Taking number, 0.00012
To convert it into scientific notation,
It should be in from of b×10ˣ,
So, now dividing and multiplying 10000 into the number 0.00012,
⇒ 0.00012 x (10000/10000)
⇒ (0.00012 x 10000)/10000
⇒ 1.2/10000
⇒ 1.2x 10⁻⁴
Similarly,
0.0006 can be written as 6 x 10⁻⁴
And 0.00059 can be written as 5.9 x 10⁻⁴
Now taking number, 4030000
To convert it into scientific notation,
It should be in from of b×10ˣ,
So, now dividing and multiplying 1000000 into the number 4030000,
⇒ 4030000 x (1000000/1000000)
⇒ (4030000 / 1000000) x 1000000
⇒ 4.03 x 1000000
⇒ 4.03 x 10⁶
Similarly,
2930000 can be written as 2.93 x 10⁶
And 5000000 can be written as 5 x 10⁶
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Help, im timed :(((
will mark branliest
Answer: it is D)
Step-by-step explanation:
Solve the equations:
1. 9x - 5 = 5x + 7
2. 8x - 2 = x - 16
3. 8x + 5 = 2x + 23
4. 2x + 8 = 5x + 20
5. 5(2x + 6) = 3x - 5
Answer:
5(x – 4) + 3x – 9x = 6 – (2x + 5) + 8x
step1:- 5x - 20 + 3x - 9x = 6 - 2x - 5 + 8x
step2:- 5x + 3x - 9x - 20 = 8x - 2x + 6 - 5
-x - 20 = 6x + 1
stp 3
-20 = 7x + 1
step 4
-21 = 7x
divide both sides by 7:-
-3 = x
thats the solution x = -3
Answer:
1. X=3, 2. X= -2, 3. X=3, 4. X= -4
Which of these shapes have the same area? Plz help thx
Answer:
I think it's b and a
Step-by-step explanation:
hope it helps u ?
please help ill give brainliest
Answer:
The answer is -5
Step-by-step explanation:
15 divided by -3 is -5
positive number divided by a negative number is a negative number :)
hope this helps
An animal shelter has a ratio of cats to dogs that is 9:7. What fraction of these animals are dogs?
Answer:
For the answer I would say 7, the fraction of dogs is 7/7
what is the slope of the line passing through the point(2,-1) and the origin.
This is the whole question, no picture came with it.
Answer:
- 1/2
Step-by-step explanation:
(0,0) (2,-1)
m = difference of y/difference of x = (-1 - 0) / (2 - 0) = - 1/2
y = - 1/2 x
Which equation is an example of slope-intercept form of a line?
How much does 22/7 differ from the true value of π?
Answer:
yess brooooooooo9o9oo
Answer:
0.001267
Step-by-step explanation:
If one knows that π is approximately 3.14159, then it trivially follows that π < 227, which is approximately 3.142857. so they differ by 0.001267
i will give brainlest to the first person to answer this question:
While at the grocery store, Mrs. Martin noticed that there were two different sized bottles of hot sauce, one was 16.9 ounces and the other 32.55 ounces. What is the difference in weight of the two bottles of hot sauce?
Answer:
15.65 ounces
Step-by-step explanation:
You have to subtract 16.9 from 32.55. This gives you 15.65 ounces.
Answer:
15.65 ounces
Step-by-step explanation:
I hope it's right :)
Graph -3.5 and -1.5 on the number line.
Answer:
ok i kow this hold on
Step-by-step explanation: