-7 – 9x = -61
please help solve and show your work. thank you.
Answer:
Step-by-step explanation:
-7 - 9x = -61
-9x = -54
x = 6
What is the difference between (-5) to the second power to -5 to the second power
Answer:
the negative
Step-by-step explanation:
if you do -5 to the second power it will give you -25 and if you do (-5) it will give you 25.
Anyone up? 10 points for anyone that can help on this PRE-ALGEBRA question. see attachment below
Answer:
1. I= $36, NB = $336
2. R = 5%, NB = $517.50
3. T= 5 YEARS, NB = $612.50
4. P= $675, NB = $783
Step-by-step explanation:
1. p= 300, r=3% t=4year
I= p*r*t
i= 300 * (3/100) * 4
i = 300 * 0.03 * 4
i = 36
New Balance = 300+36 = $336
2. r = (i*100)/(p*t)
= (67.50*100)/(450*3)
= 6750/1350
= 5%
New Balance =450+67.50 = $517.50
3. t= (i*100)/(p*r)
= (112.50*100)/(500*4.5)
= 11250/2250
=5
New Balance = 500+112.50 =$612.50
4. p= (i*100)/(r*t)
= (108*100)/(8*2)
= 10800/16
= $675
New Balance = $675+$108 = $783
In the formula d = r x t, d is the distance traveled and t is the time traveled. If d = 63 and t = 9, then r =
Answer:
7
Step-by-step explanation:
D=r*t
r=d/t
r=63/9
r=7
ng
In 40 baseball games, Juan's team has
scored 50 runs. If the team continues at
this rate, how many runs could the team
expect to score in 180-game season?
II
Answer:
225 runs
Step-by-step explanation:
180/40 = 4.5
50 × 4.5 = 225
7)
The first floor of the Willis Tower is 21 feet high. Each additional floor is 12 feet high.
a
Write an equation for the nth floor of the tower.
b.
Find the height of the 65th floor.
Answer:
Step-by-step explanation:
If the first floor of the Willis Tower is 21 feet high. and each additional floor is 12 feet high, then the floor heights as we move from one floor to another we keep increasing by 12feets and forms an arithmetic progression as shown;
21, (21+12), (21+12+12), ...
21, 33, 45...
a) To write an equation for the nth floor of the tower, we will have to find the nth term of the sequence using the formula for finding the nth term of an arithmetic sequence.
The nth term of an arithmetic sequence is expressed as [tex]T_n = a + (n-1)d[/tex]
a is the first term = 21
d is the common difference = 33-21 = 45-33 = 12
n is the number of terms
Substituting the given parameters into the formula;
[tex]T_n = 21+(n-1)*12\\T_n = 21+12n-12\\T_n = 21-12+12n\\T_n = 9+12n[/tex]
Hence the equation for the nth floor of the tower is expressed as [tex]T_n = 9+12n[/tex]
b) To get the height of the 65th floor, we will substitute n = 65 into the formula arrived at in (a)
[tex]T_n = 9+12n\\T_{65} = 9 + 12(65)\\T_{65} = 9+780\\T_{65} = 789 ft[/tex]
Hence the height of the 65th floor is 789feets.
bob makes $6 dollars and hour. write an expression that will represent his total pay for h hours of work
Answer:
y = 6x
Step-by-step explanation:
pay = $6 per hour
y = 6x
Answer:
total pay = 6h
Step-by-step explanation:
total pay = pay per hour *hours worked
total pay = 6h
Which number has a thousands digit that is ten times greater than the hundreds digit?
A. 134,561
O B. 367,244
O C. 552,673
D. 706,623
please help
Answer:
B
Step-by-step explanation:7 is greater than 2
The correct answer is 367,244.
What is number system?Number System is a method of representing Numbers on the Number Line with the help of a set of Symbols and rules. These symbols range from 0-9 and are termed as digits. Number System is used to perform mathematical computations ranging from great scientific calculations to calculations.
Positive Numbers: Numbers that are represented on the right side of the zero are termed as Positive Numbers. The value of these numbers increases on moving towards the right. Positive numbers are used for Addition between numbers. Example: 1, 2, 3, 4, …
Negative Numbers: Numbers that are represented on the left side of the zero are termed as Negative Numbers. The value of these numbers decreases on moving towards the left. Negative numbers are used for Subtraction between numbers. Example: -1, -2, -3, -4, …
as per the situation given,
we have number has a thousands digit that is ten times greater than the hundreds digit.
So, the number is 367244 because 7 is 5 greater than 2.
Learn more about number system here:
https://brainly.com/question/21751836
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Evaluate the expression when x = 11-2
10
1.-6x4 +X +20
2. 5x2 - 9x2 + 35
3. -8x + 13x3 -10
4. -9x2 + 10x -15
5. -8x2 + 13x3 +20
6. 8x4 + 13x - 10
7.-9x + 10x4 -15
8.-18x3 + 10x2 +20
9. 7x4 + 13x2-10
10. 6x3 + 13x - 10
11. 3x2 + 13x2 -10
12. 2x4 + 13x - 10
Can someone help me please
I'm confused as to why there's a random "10" but the answer is actually pretty simple. Insert (11-210) into the problems.
Basically substitute (11-210) into the numbers with the x variable.
Two co-teachers, Daniel and Mathew, have to grade a set of math journals.
Daniel grades 45% of the journals and Mathew grades 55% of them.
Mathew has to grade 121 journals. How many total journals have to be graded?
Answer:
220
Step-by-step explanation:
55 percentage of x = 121
so X = 220
as simple as that
evaluate zx-xy-7 use x=-3, y=8, and z=-9*
Answer:
44
Step-by-step explanation:
1. substitute variables with their constants
(-9)(-3) - (-3)(8) - 7
2. multiply all like terms
(27) - (-24) - 7
3. Combine all like terms
27 + 24 - 7
51 - 7
= 44
Answer:
44
Step-by-step explanation:
Evaluate z x - x y - 7 where x = -3, y = 8 and z = -9:
z x - x y - 7 = -9 (-3) - -3×8 - 7
Hint: | Multiply -9 and -3 together.
-9 (-3) = 27:
27 - -3×8 - 7
Hint: | Multiply -1 and -3 together.
-(-3) = 3:
27 + 3×8 - 7
Hint: | Multiply 3 and 8 together.
3×8 = 24:
27 + 24 - 7
Hint: | Evaluate 27 + 24 using long addition.
| 1 |
| 2 | 7
+ | 2 | 4
| 5 | 1:
51 - 7
Hint: | Subtract 7 from 51.
| 4 | 11
| 5 | 1
- | | 7
| 4 | 4:
Answer: 44
Translate and solve:
The product of a number
and -8 is more than 64
Answer:
x < -8
Step-by-step explanation:
Step 1: Translate
Product = multiplication = -8(x)
More than = >
64 = 64
Step 2: Write out inequality
-8x > 64
Step 3: Solve
x < -8
What does n equal in the equation that I've typed out 5n+21?
Answer:
n does not have a defined value, but it has only one value, it is only possible to determined it in an equality let's say that 5n+21=26 there n =1
but we don't know the value
so it stays as 5n+21
What is the value of x in the equation below? Negative 3 minus (negative 8) minus (negative 2) = x –13
please make me as brainliest
Answer:
A
Step-by-step explanation:
2ab - ab + 2a + 3b + 2ab
what is this simplified ?
Answer: The answer is 3ab + 2a + 3b.
Step-by-step explanation:
So we are given this equation:
2ab - ab + 2a + 3b + 2ab
First we have to add like terms:
2ab + 2ab - ab + 2a + 3b
4ab - ab + 2a + 3b
3ab + 2a + 3b
Here is your answer!
D is the midpoint of AB. If AD=2x+11 and DB=4x-5, find the value of x and AB
Answer:
x = 8
AB = 54
Step-by-step explanation:
AD = DB
2x+11 = 4x-5
11 = 2x - 5
16 = 2x
8 = x
2(8) + 11 =
16 + 11 = 27
The formula for the area of a triangle is A=1/2 bh, where b is the base of the triangle. what is the length of the base if the area is 32cm squared and the height is 4 cm
Answer:
base =16Step-by-step explanation:
[tex]A = \frac{1}{2} \times b \times h\\A = 32\\b = ?=x\\h = 4\\\\32 = \frac{1}{2} \times x \times 4\\\\32 = \frac{4x}{2} \\\\Cross \: Multiply\\\\64 =4x \\Divde \: both \: sides \: of \: the \:equation \:by \: 4\\\\\frac{4x}{4} = \frac{64}{4} \\\\x = 16[/tex]
−18+p=18 what property would be used for this
Answer:
addition property of equality
Step-by-step explanation:
−18+p=18
Add 18 to each side using the addition property of equality
−18+18+p=18+18
p = 36
Given the function f(x) = -x^2 +7x + 6, find the interval(s) in which f(x) is decreasing.
Answer:
Step-by-step explanation:
f'(x)=-2x+7
f(x) is decreasing if '(x)<0
so -2x+7<0
or 7<2x
or 2x>7
or x>7/2
including end points f(x) is decreasing in [3/2,∞)
two complementary angles have a difference of 36°. Find the measure of each angle. (Complementary angles are angles that add up to 90°) Show ur work
Answer:
27°,63°
Step-by-step explanation:
Let the two angles be a and b.
They are complementary, meaning they add up to 90. Thus:
[tex]a+b=90[/tex]
And we are told their difference is 36. Therefore:
[tex]a-b=36[/tex]
Solve for the system of equations. Add b to both sides in the second equation:
[tex]a=b+36[/tex]
Substitute this into the first:
[tex](b+36)+b=90[/tex]
Combine like terms;
[tex]2b+36=90[/tex]
Subtract 36:
[tex]2b=54[/tex]
Divide by 2:
[tex]b=27[/tex]
So, b is 27 degrees.
Use the second equation again:
[tex]a-b=36[/tex]
Now that we know b is 27, substitute:
[tex]a-27=36[/tex]
Add 27 to both sides:
[tex]a=63[/tex]
So, a is 63 degrees.
And we're done :)
Answer:
27 and 63
Step-by-step explanation:
x - y = 36
x + y = 90
add the equations together
2x = 126
x = 63
substitute x for x in the first equation
63 - y = 36
y = 27
What are the coordinates of point F?
D
3
B
2
С
--4
- 3
-2
-1
0
2
3
4
-1
- 2
-3
-4
Answer: Point F is at location (-4, -5)
The x and y axis meet at the origin (0,0)
Start at the origin and move 4 units to the left. This means the x coordinate is x = -4
Then move 5 units down so the y coordinate is y = -5
Put together (x,y) = (-4, -5) describes where point F is located.
Answer:
(-4-5)
Step-by-step explanation:
Write an expression to represent the product of -3 and the square of a number decreased by 8.
How many terms are in your expression?
4
3
2.
1
Answer:2
Step-by-step explanation:
The expression contains two terms .
What is expression?An expression is a sentence with a minimum of two numbers or variables and at least one math operation. This math operation can be addition, subtraction, multiplication, or division.
According to the question
The product of -3 and the square of a number decreased by 8
i.e ,
Let square number = [tex]x^{2}[/tex]
=> -3[tex]x^{2}[/tex]-8
Hence, The expression contains two terms -3[tex]x^{2}[/tex] and -8 .
To know more about expression here :
https://brainly.com/question/20797973
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Jenna calculated several numbers in her calculator. The result displayed 1.8E-4 on the calculator screen. Which equivalent number(s) does this represent? Select all that apply.
-0.00018
1.8 × 10 -4
18 × 10 4
0.00018
1800
Step-by-step explanation:
It is given that the result displayed on the calculator screen is [tex]1.8E 10^{-4}[/tex]. We need to say out of all options, which options represent the equivalent number.
[tex]1.8\times 10^{-4}=\dfrac{1.8}{10^4}\\\\=\dfrac{1.8}{10000}[/tex] .....(1)
Option (2) is correct i.e. [tex]1.8E10^{-4}=1.8\times 10^{-4}[/tex]
From eq2uation (1)
[tex]\dfrac{1.8}{10000}=\dfrac{18}{100000}\\\\=0.00018[/tex]
Option (4) is correct.
Nevaeh had 12 blue pencils and 18 red pencils to give out equally among the maximum number of classmates. How many red pencils will she give to each classmate?
Answer:
The answer to this problem is 3
Step-by-step explanation:
Find the volume of the cone.
Either enter an exact answer in terms of or use 3.14 for radius is 6 height is 8
Answer:
Hey there!
Cone formula: [tex]\pi[/tex]hr^2/3
Plugging in the values, we get the volume is 301.59
Let me know if this helps :)
Answer:
96π
301.59
Step-by-step explanation:
The volume of a cone can be calculated using the following formula:
[tex]V=\frac{1}{3}bh[/tex]
b is the base and h is the height. The base formula for a circle (area):
[tex]b=\pi r^2[/tex]
Insert this value into the formula:
[tex]V=\frac{1}{3}\pi r^2h[/tex]
Simplify the formula:
[tex]V=\frac{\pi r^2h }{3}[/tex]
Now insert the known values:
[tex]V=\frac{\pi(6)^2(8) }{3}[/tex]
Simplify:
[tex]V=\frac{\pi*36*8 }{3}\\\\V=\frac{288\pi }{3}\\\\V=96\pi[/tex]
The volume is 96π units³ or 301.59 units³.
:Done
How do I do? What is the answer and why
Answer:
Step-by-step explanation:
∠ADE = 74 {Vertically opposite angles are equal}
∠AED + 127 = 180 {Straight line }
∠AED = 180 - 127
∠AED = 53
In ΔADE,
∠DAE + ∠AED + ∠ADE = 180 {angle sum property of triangle}
∠DAE + 53 + 74 = 180
∠DAE + 127 = 180
∠DAE = 180 -127
∠DAE = 53
What would be the total if 25%is 18
Answer:
72
Step-by-step explanation:
You would first change 25% to 0.25
Then divide 18 by 0.25 (18/0.25)
Which equals 72
Answer:
4.5 because its basically 18 divided by 4
Step-by-step explanation:
C. Write the value of the expression on the blank.
1. 1-561 =
2. I+181 =
3. 1+751 =
4. I+311 =
5. 1+571 =
6. I+831 =
7. 1-3451 =
8. 1-5981 =
9. l-1121 =
10. I-1431 =
Answer:
1. = -560
2. = I181
3. = 752
4. = I311
5. = 572
6. = I831
7. = -3450
8. = 5980
9. = -I1121
10. = -I1431
How many solutions does this equation have? -3 – 7t = -7t - 3
1)no solution
2)one solution
3)infinitely many solutions
Answer:
3)infinitely many solution
Step-by-step explanation:
-3 - 7t = -7t - 3
-7t + 7t = -3 + 3
0 = 0
if there is same number on both side it have infinitely many solution.
hope u like it ❤️❤️❤️
for any question comment me
Which expressions are equivalent to 4(4a+5
Answer:
4(4a+5) = 16 a + 20 = True
Step-by-step explanation: