Answer:
A = a + b2h = 9 + 42 · 10 = 65
Step-by-step explanation:
Create an equation with one solution of x = −7.
10x − (x − 2) = 2x − (_+ x)
Full question is on attached image. All help is appreciated :)
Answer:
10x − (x − 2) = 2x − (40 + x).
The missing number is 40.
Step-by-step explanation:
Let the missing number be a, Then:
10x - (x - 2) = 2x - (a + x)
10x - x + 2 = 2x - a + x
9x - 2x - x = -a - 2
6x = -a - 2
When x = -7:
6(-7) = - a - 2
-42 + 2 = -a
-40 = -a
a = 40.
So the equation is
10x − (x − 2) = 2x − (40 + x).
What digit is in the ten thousand place 7,612,045
Answer:
the digit in the ten thousandths place is 1
Step-by-step explanation:
Answer:
1 is the digit that is in the ten thousandth place
Step-by-step explanation:
can i get brainlisest
Which number is farthest from 1 on the number line?
start root 1.2 EndRoot
start root 1.3 EndRoot
start root 1.4 EndRoot
start root 1.5 EndRoot
Answer:
start root 1.5 EndRoot
Answer:
d
Step-by-step explanation:
what is the area of the parallelogram shown below
Answer:
please add an image my bro
Step-by-step explanation:
we cant answer without knowing what it looks like
Answer:
answer my questions also
Step-by-step explanation:
If tangents PA and PB from a point P to a circle with centre O are inclined to each other at an angle of 100°, then ∟BOA is equal to ____________
pls answer fast
Answer:
[tex] m\angle BOA = 80\degree[/tex]
Step-by-step explanation:
PA and PB are tangents to the circle with center O at points A and B respectively.
[tex]\therefore OA \perp PA\:\: \& OB \perp PB....(\because tangent\perp radius)\\\therefore m\angle OAP=m\angle OBP = 90\degree\\m\angle APB = 100\degree\\OAPB \: is \: a\: quadrilateral\\\therefore m\angle APB+m\angle OAP+m\angle OBP+m\angle BOA = 360\degree\\\therefore 100\degree + 90\degree+ 90\degree+ m\angle BOA = 360\degree\\\therefore 280\degree + m\angle BOA = 360\degree\\\therefore m\angle BOA = 360\degree-280\degree \\\huge\red{\boxed{\therefore m\angle BOA = 80\degree}}[/tex]
2. How many times smaller is the surface area of a sphere if the radius is multiplied by 1/2?
If a number is multiplied by 1/2, this means that it strinks 2 times.
For example, we have the radius of 4.
If multipled by 1/2, we get 2.
So, the radius is now 2 times smaller than the original radius.
So, the radius of the sphere will be 2 times smaller than what it originally was.
Best of Luck!
the midpoint of chord AB is ( , ), and the slope of chord AB is BLANK
Answer:
midpoint of chord ab is (-2, 12) slope of chord ab is 1/2
Step-by-step explanation:
simplifye this expression 54n + 78 divided by 6 =
Answer:
9n + 13
Step-by-step explanation:
(54n + 78)/6
Divide 6 from all terms within the parenthesis:
(54n)/6 = 9n
(78)/6 = 13
9n + 13 is your answer.
~
Answer: 54n+13
Simplify
78÷6=13
54n+78/6=54n+13
PLEASE HELP ME ASAP
Given circle O, find the value of x .
Answer:
278
71.5 for triangles
Step-by-step explanation:
Because 32 + 45 = 82
its a circle so a circle is 360 degrees
so 360 - 82 =
278
Triangles: 180 - 37 then 143 ÷ 2 = 71.5
Your welcome!!
A fair number cube is rolled four times. What is the probability of getting a 6 all four times.
Answer:
1/4
Hope its correct, if so. pls mrk as brainliest
f(x) = 2x^2 – 5x; find f(3)
Answer:
f(3) = 3
Step-by-step explanation:
f(x) = 2x^2 – 5x
Let x = 3
f(3) = 2(3)^2 - 5(3)
= 2*9 -15
= 18-15
=3
Answer:
f(3)=3
Step-by-step explanation:
This question asks us to find f(3). We want to find what f(x), or y is, when x is equal to 3.
f(x)=2x^2-5x
Substitute 3 in for x.
f(3)=2(3)^2-5(3)
Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction
Evaluate the exponent first. 3^2 is the same as 3*3, which is equal to 9.
f(3)=2(9)-5(3)
Multiply 2 and 9
f(3)=18-5(3)
Multiply 5 and 3
f(3)=18-15
Subtract 15 from 18
f(3)=3
Please help it is about precent of change. ( highest number of points )
14 books to 40 books. Tell me the precent of change.
Answer:
185.714% increase
Step-by-step explanation:
Solution:
Calculate percentage change
from V1 = 14 to V2 = 40
(2−1)|1|×100
=(40−14)|14|×100
=2614×100
=1.85714×100
=185.714%change
=185.714%increase
Lee Ann earned $102.00 working for 8 hours at her job as a secretary at her second job in the mall, she earned $40.50 working for 180 minutes. At which job did lee Ann earn the most per hour? Show your work
Answer:
top lines of explanation
Step-by-step explanation:
at the secretary job she made 12.75 an hour
second job she made 13.50 an hour
180 minutes is 3 hours divide 40.50 by 3 and get 13.50
102.00 divided by 8 is 12.75
Step-by-step explanation:
8 hours = 102.00
1 hour = 102 ÷ 8 = 12.75
180 min = 3hr
3hr = 40.50
1hr = 40.50 ÷ 3 = 13.5
2nd job
What is the expression of 3/4 percent divided between 7/4 and 2/4?
Answer:
85.714285 reapeating
Step-by-step explanation:
When a child was born, her grandfather decides to put $500 in an account that earns interest. He plans to make no other deposits or withdrawals for 18 years. When the child turns 18 years old, the money in the account will be a birthday gift. The grandfather is choosing between two options: Option A: An account that grows by 10.5% each year. Option B: An account that grows by $20 each year. Which option will result in a better 18th birthday gift? Explain your reasoning.
Answer:Answer B
Step-by-step explanation:
You get more money that way.
Is the relation shown in the arrow diagram a function? Explain.
A No, each input has one output, so the diagram does not represent a function.
B Yes, the input 2 has two outputs, so the arrow diagram represents a function.
C Yes, the inputs 1, 5, and 11 have one output, so the arrow diagram represents a function.
D No, the input 2 has two outputs, so the arrow diagram does not represent a function.
Answer:
D
Step-by-step explanation:
Each input can not have 2 outputs or else it’s not a function. 2 maps to 21 and 42. It MPs to two outputs. It’s not a function
Plz help me out, I only have a minute to submit this..
Pilar built a tower by stacking identical layers on top of each other. If her tower used a total of 312 blocks and if the bottom layer has 13 blocks, how tall is her tower? Explain how you know.
Answer:
The height of the tower = 24 units.
Explanation:
In the question above, we are given the following variables.
The total number of blocks used = 312 blocks
The bottom layer( base of the tower) = 13 blocks
We are to find how tall the tower is = height of the tower = unknown.
The total number of blocks used = Volume of the tower = 312 cubic units(blocks)
Area of the base = number of the blocks used in the bottoms layer = 13 square units( block).
Because blocks are used, we assume that this is a Rectangular based prism
The Volume of a Rectangular based prism = Area of the base × h
312 = 13 × h
h = 312 cubic units ÷ 13 square units.
h = 24 units.
There fore, the height of the tower = 24 units
what is -0.8- (-1.6)?
Answer:
0.8
Step-by-step explanation:
Solution:
0.8
Step by step explanation:
1) (0- 8/10) - (0-8/5)
2) Simplfy. 4/5
3) (0-4/5) - (-8/5)
4) (-4) - (-8)/5 = 4/5
Final result: 4/5= 0.8000
Use mental math to calculate the following.
e). 60
f). [tex]\frac{4}{9}[/tex]
5 friends plan to split a restaurant Bill evenly. The total cost of the meal is $89.75, and they want to leave a 20% tip. what amount should each friend pay?
Answer:
£17.51
i used try and error
100 points.
Plz complete question 2 only.
Answer:
see below
Step-by-step explanation:
2 1/2+ 3 3/16 + 7/8
Get a common denominator of 16
2 8/16 + 3 3/16 + 14/16
5 25/16
5 + 16/16 + 9/16
6 9/16
Subtract this from 8 ft
8 - 6 9/16
Borrow 1 from 8 in the form of 16/16
7 16/16 - 6 9/16
1 7/16
b 1 7/16 - 1 1/3
The common denominator is 48
1 21/48 - 1 16/48
5/48
Answer:
2a) [tex]1\frac{7}{16}[/tex]
2b) [tex]\frac{5}{48}[/tex]
Step-by-step explanation:
The first thing we need to do is add all the fractions together so,
2a) [tex]2\frac{1}{2} +3\frac{3}{16}+\frac{7}{8}[/tex]
We need to find the LCM of the denominators in order to properly add the fractions together so the LCM is 16
[tex]2\frac{1}{2} +3\frac{3}{16}+\frac{7}{8}[/tex] = [tex]2\frac{8}{16} +3\frac{3}{16} +\frac{14}{16} = 5\frac{25}{16} =6\frac{9}{16}[/tex]
Now we subtract this from 8 as asked in the question,
[tex]8-6\frac{9}{16} =\frac{8}{1} -\frac{105}{16} =\frac{128}{16} -\frac{105}{16}=\frac{23}{16} =1\frac{7}{16}[/tex]
2b) We are asked to minus the fraction [tex]1\frac{7}{16}[/tex] from [tex]1\frac{1}{3}[/tex]
Find the common denominator which is 48
[tex]1\frac{7}{16} -1\frac{1}{3} =1\frac{21}{48} -1\frac{16}{48} =\frac{5}{48}[/tex]
How many real roots does the following equation have?
x4 -81 = 0
Answer:
Find roots of x4−81=0 by solving for x. x=3,−3
Step-by-step explanation:
The given equation [tex]x^4[/tex] - 81 = 0 has a total of two real roots x = 3 and
x = -3.
We have,
The given equation [tex]x^4[/tex] - 81 = 0 can be factored as a difference of squares:
[tex](x^2)^2 - 9^2 = 0\\(x^2 - 9)(x^2 + 9) = 0[/tex]
Further simplifying:
(x - 3)(x + 3)(x² + 9) = 0
From this factorization, the equation has two linear factors (x - 3) and
(x + 3) and one quadratic factor (x² + 9).
The linear factors, (x - 3) and (x + 3), will each provide one real root since they are linear equations.
x = 3 and x = -3.
The quadratic factor (x² + 9) has no real roots.
This is because the discriminant (b² - 4ac) of the quadratic equation is negative (a = 1, b = 0, c = 9), indicating that there are no real solutions.
Therefore,
The given equation [tex]x^4[/tex] - 81 = 0 has a total of two real roots,
x = 3 and x = -3.
Learn more about equations here:
https://brainly.com/question/17194269
#SPJ4
Find the diameter of a circle with an area of 256π square meters.
Answer:
d = 32 m
General Formulas and Concepts:
Symbols
π (pi) ≈ 3.14Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityGeometry
Area of a Circle Formula: A = πr²
r is radiusRadius Formula: [tex]\displaystyle r = \frac{d}{2}[/tex]
d is diameterStep-by-step explanation:
Step 1: Define
Identify variables
A = 256π m²
Step 2: Derive
Rewrite formula
[Area of a Circle Formula] Substitute in r [Radius Formula]: [tex]\displaystyle A = \pi(\frac{d}{2})^2[/tex]Evaluate exponents: [tex]\displaystyle A = \pi(\frac{d^2}{4})[/tex]Multiply: [tex]\displaystyle A = \frac{\pi d^2}{4}[/tex]Step 3: Solve for d
Substitute in A [Modified Area of a Circle Formula]: [tex]\displaystyle 256 \pi \ m^2 = \frac{\pi d^2}{4}[/tex][Multiplication Property of Equality] Multiply 4 on both sides: [tex]\displaystyle 1024 \pi \ m^2 = \pi d^2[/tex][Division Property of Equality] Divide π on both sides: [tex]\displaystyle 1024 \ m^2 = d^2[/tex][Equality Property] Square root both sides: [tex]\displaystyle 32 \ m = d[/tex]Rewrite: [tex]\displaystyle d = 32 \ m[/tex]Hi, can you pls find the area of this shape? please find it fasttttt
Answer:
20
Step-by-step explanation:
Area = ((7+3) x 4) ÷ 2 = 20
find the volume of the fish tank if the base is a regular octagon with side length 0.9 units and the height of the prism is 2 units
Answer:
9.2
Step-by-step explanation:
Please help!!
Only find total surface area and volume.
Answer:
see explanation
Step-by-step explanation:
The triangular prism has 3 rectangular faces and 2 congruent triangular faces.
rectangular base CDEF = 8 × 2 = 16 cm²
rectangular side ABFE = 6 × 2 = 12 cm²
sloping rectangle ABCD = 10 × 2 = 20 cm²
2 triangular faces = 2 × [tex]\frac{1}{2}[/tex] × 8 × 6 = 48 cm²
Total surface area = 16 + 12 + 20 + 48 = 96 cm²
----------------------------------------------------------------------
The volume (V) of the prism is calculated as
V = Bh ( B is the area of triangular face and h the depth of the prism )
B = [tex]\frac{1}{2}[/tex] × 8 × 6 = 24 cm² and h = 2 cm
V = 24 × 2 = 48 cm³
What’s the answer guys
Answer:
27/28
Step-by-step explanation:
Two numbers have a sum of 32 and a difference of 6. Find two numbers.
10 cm
8 cm
6 cm
What is the value of tan xº?
what is the value of tan x
This question is incomplete because it lacks the appropriate diagram.
Please find attached to this answer , the appropriate diagram
Answer:
First option tan x° = 8 ÷6
Step-by-step explanation:
When we solve for angles in a right angled triangle or we are trying to find one if the sides of a right angled triangle, we used trigonometric functions to find our answers. These trigonometric functions include Sine (sin) , Cosine (cos) and Tangent (tan)
Tangent also called short form tan is used when solving problems involving a right angled triangle.
A right angled triangle has 3 sides, the Hypotenuse, the opposite side and the adjacent side.
When we are asked to find the tangent of an angle,
tan = Opposite side / Adjacent side
In the question above, we are asked to find tan x° where x is the angle.
The opposite side = 8cm
The adjacent side = 6cm
Therefore, tan x° = 8cm/6cm = 8cm ÷ 6cm
Find the area. Photo Attached
Answer:
Area of Regular Polygon: ( About ) 716.6 m^2; Option B
Step-by-step explanation:
~ In this situation we can apply the formula 1/2 * a * P, provided a ⇒ apothem, and P ⇒ Perimeter of the shape ~
Here we are not directly provided with the apothem, so we have to first plan out our procedure step-by-step:
Let us first divide this dodecagon into 12 triangles, each equilateral provided that this is a regular polygon ( implied ). Now let us draw an altitude to one of these triangles, and provided these are equilateral triangles Coincidence Theorem can be applied to this specific triangle. That would mean this altitude is both an angle bisector and a median, which can help us determine the tan degree of the mini triangle formed by the altitude, and the length of one of the sides of this mini triangle.
1. Knowing that the altitude splits the base of the triangle into the two congruent parts ⇒ one of the congruent parts should be ⇒ 8/2 = 4 meters
2. Now the triangles formed through spliting this figure are all ≅, so one of the angles of the triangle is 360/12 = 30 degrees. The mini triangle formed should thus have a measure of 30/2 as the altitude is an angle bisector ⇒ tan 15.
3. From this you can create a proportion, with a ⇒ apothem:
tan 15/ 1 = 4/a ⇒ tan 15 * a = 4 ⇒ a = 4/tan 15° ⇒ a = ( About ) 14.93
4. The perimeter of this shape would be 8 * 12 ⇒ 96 meters
5. Now let us solve for the area of this regular polygon through substitution into the formula 1/2 * a * P ⇒ 1/2 * 14/93 * 96 = ( About ) 716.64 meters^2
Answer ⇒ Area of Regular Polygon: ( About ) 716.6 m^2