Answer:
C.) x = -45/4
General Formulas and Concepts:
Pre-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 EqualityStep-by-step explanation:
Step 1: Define
Identify
-8x = 90
Step 2: Solve for x
[Division Property of Equality] Divide -8 on both sides: x = 90/-8Simplify: x = -45/4Line A (y = x + 2) is transformed into Line B (y=3x+1). Which best describes the new slope and y-intercept?
Answer:
The slope is steeper and the line is shifted downwards.
The y-intercept is shifted downwards.
Step-by-step explanation:
We proceed to demonstrate the transformation from the line A to line B:
1) [tex]y = x + 2[/tex] Given.
2) [tex]y = 3\cdot x + 6[/tex] Vertical dilation.
3) [tex]y = 3\cdot x +1[/tex] Vertical shift of the line in 5 units in the -y direction/Result
Hence, the answer is:
The slope is steeper and the line is shifted downwards.
The y-intercept is shifted downwards.
Find the area of this semi-circle with diameter 18
Give your answer rounded to 2 DP.
Step-by-step explanation:
diameter(d): 18
radius(r): 18 ÷ 2 = 9
area of a semi-circle:
[tex]\frac{\pi {r}^{2}}{2}[/tex]
[tex]= \frac{\pi \times 9 \times 9}{2} = 127.23[/tex]
A rectangle has a length of (3x - 1) and a width of (x + 1). Part A Determine the perimeter and area of the rectangle as polynomials.
Answer:
Area of the rectangle = 3x² +2x-1
Perimeter of the rectangle = 8x
Step-by-step explanation:
Given
length = (3x - 1)
width = (x + 1)
Area of the rectangle= length * breadth
Area of the rectangle = (3x - 1) (x + 1)
= 3x²+ 3x - x-1
= 3x² +2x-1
Perimeter of the rectangle = 2( length + breadth)
= 2[(3x - 1) + (x + 1)]
= 2[3x - 1 + x + 1]
= 2[ 4x]
= 8x
Which proportion could be used to find the length of side b?
Answer:
[tex]\text{B. }\frac{\sin 31^{\circ}}{9.3}=\frac{\sin 85^{\circ}}{b}[/tex]
Step-by-step explanation:
In any triangle, the Law of Sines states that the proportion of the sine of each angle and its opposite side is maintained throughout all 3 angles and their corresponding sides of a triangle:
[tex]\frac{\sin A}{a}=\frac{\sin B}{b}=\frac{\sin C}{c}[/tex]
Thus, we have [tex]\implies \boxed{\text{B. }\frac{\sin 31^{\circ}}{9.3}=\frac{\sin 85^{\circ}}{b}}[/tex]
Which of the following is a rational number but not an integer?
74, 3/10, -25, or 170
Answer:
3/10Step-by-step explanation:
As,
Integers includes whole numbers, and negative of the whole numbers.
And Rationals includes every fraction, Integers and negative fraction.
So,
170, -25, and 74 are both Integers and Rationals.
But,
Only 3/10 is a fraction included only in rationals and not in Integers
use the given circle to find the values of x, y and z
Answer:
x=10 y=90 z=20
Step-by-step explanation:
Given three squares of different areas, the perimeter of square A 2/3 the perimeter of square B and the perimeter of square B is 2/3 the perimeter of square C. if the area of Square A is 16 square units, what is the area of square C?
I’ll mark BRAINLIEST the first to answer my question :)
Area of square A = 16 cm
side of square A a1 = 4cm
side of square A = 2/3(2/3a3)
a1= 4/9a3
a3 = 9cm
Area of square C = 9×9= 81 Cm²
Which represents the explicit formula for the arithmetic sequence on = 7 - 3(n - 1) in function form?
f(n) = 3n - 6
B f(n) = -3n - 6
f(n) = 3n - 10
D f(n) = -3n + 10
Answer:
Step-by-step explanation:
All this question is asking you to do is distribute through the parenthesis to simplify. Doing that gives us
f(n) = 7 - 3n + 3 and
f(n) = 10 - 3n or
f(n) = -3n + 10, choice D.
The representation of the function of the given arithmetic sequence 7 - 3(n - 1) is f(n) = -3n + 10 thus option (D) is correct.
What is a function?An arrangement known as a function connects inputs to essentially one output.
The machine may only produce one output for each input and will only accept inputs that are specifically listed as part of the function's domain.
As per the given,
a_n = 7 - 3(n - 1)
f(n) = 7 - 3n + 3
f(n) = -3n + 10
Hence "The representation of the function of the given arithmetic sequence 7 - 3(n - 1) is f(n) = -3n + 10".
For more about the function,
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Can someone help me with this, pleasee.
Answer:
D i think sorry if it's wrong
Step-by-step explanation:
sarah read 20% of a book that was 150 pages long. how many pages did sarah read?
Sarah read 30 pages of the book
HELPP!! Points A and B are on the different sides on line l, the distance between point A and the line l is 10 in, the distance between point B and line l is 4in. What is the distance between the midpoint O of the segment AB and the line l?
Answer:
7
Step-by-step explanation:
each way from 10 to 7 is 3 and 4 to 7 is 4
help asap!!!!!!!! i’ll mark as brainlist
Answer:
c and d
Step-by-step explanation:
What is the volume of a cone that has a height of 10 feet and a base with a surface area(B) of 9 square feet?
Answer:
30 cubic feet
Step-by-step explanation:
According to the scenario, calculation of the given data are as follows,
Height of cone (h) = 10 feet
Base surface area = π[tex]r^{2}[/tex] = 9 sq. feet
So we can calculate the volume of cone by using following formula,
volume of cone = (1/3)π[tex]r^{2}[/tex]h
By putting the value in the formula, we get
Volume of cone = (1/3) 9 × 10
= 3 × 10
= 30 cubic feet
please help me on thiss
Answer:
-1.2
Step-by-step explanation:
3n + 5 = 1/2(11n + 16)
3n + 5 = 5.5n + 8
5 = 2.5n + 8
-3 = 2.5n
-3/2.5 = n
-1.2 = n
Hope this helps!
Answer:
[tex]n=-1.2[/tex]
Step-by-step explanation:
First, solve both sides of the equation:
[tex]3n+5=\frac{1}{2} (11n+16)[/tex]
[tex]3n+5=(\frac{1}{2} )(11n)+(\frac{1}{2} )(16)[/tex] (Distribute)
[tex]3n+5=\frac{11}{2} n+8[/tex]
Then, subtract 11/2 n from both sides:
[tex]3n+5-\frac{11}{2}n=\frac{11}{2} n+8-\frac{11}{2} n[/tex]
[tex]\frac{-5}{2}n+5=8[/tex]
Now, subtract 5 from both the sides:
[tex]\frac{-5}{2} +5-5=8-5[/tex]
[tex]\frac{-5}{2} n=3[/tex]
For the last step, multiply both the sides by 2 / -5
[tex](\frac{2}{-5} )*(\frac{-5}{2} )=(\frac{2}{-5} )*(3)[/tex]
[tex]n=\frac{-6}{5}[/tex]
Convert it to decimal:
[tex]n=-1.2[/tex]
How many \frac{1}{2} 2 1 - pound packages of cheese can the deli make with 1212 pounds of cheese?
Given:
Total cheese = 12 pound
Cheese in each package = [tex]\dfrac{1}{2}[/tex] pounds
To find:
The number of cheese packages.
Solution:
We need to divide the total amount of cheese by quantity of cheese in each package to find the the number of cheese packages.
[tex]\text{Number of cheese packages}=\dfrac{\text{Total cheese}}{\text{Cheese in each package}}[/tex]
[tex]\text{Number of cheese packages}=\dfrac{12}{\dfrac{1}{2}}[/tex]
[tex]\text{Number of cheese packages}=12\times \dfrac{2}{1}[/tex]
[tex]\text{Number of cheese packages}=24[/tex]
Therefore, there are 24 number of cheese packages.
I need this question need done asap
Answer: The answer to this is 7.
H² = B² + P²
(25)² = (24)² + p²
625 = 576 + p²
p² = 49
p = 7
Determine the intercepts of the line
y= 4x + 7
x-intercept: (____,___)
y-intercept: (____,___)
[tex] \huge\mathfrak{ \underline{Answer : }}[/tex]
The equation of line is
[tex] \hookrightarrow \: y= 4x + 7 [/tex]
let's plug the value of " x as 0 " to find the coordinate of y at the " x - intercept "
[tex]y = 4x + 7[/tex][tex]y = (4 \times0 ) + 7[/tex][tex]y = 7[/tex]therefore, the coordinates of x- intercept are :
[tex] \large \boxed{(0,7)}[/tex]
now, let's plug the value of " y as 0 " to find the coordinate of x at the " y - intercept "
[tex]y = 4x + 7[/tex][tex]4x + 7 = 0[/tex][tex]4x = - 7[/tex][tex]x = \dfrac{ - 7}{4} [/tex]therefore, the coordinates of y - intercept are :
[tex] \boxed{ \bigg( \frac{ - 7}{4} ,0 \bigg)}[/tex]
___________________________________
[tex] \mathrm{✌TeeNForeveR✌}[/tex]
Which phrase correctly represents the algebraic expression 3t?
A. The sum of three and a number.
B. The product of three and a number.
C. The quotient of three and a number.
D. The difference of three and a number.
In the figure, x = , y = , and z = .
Find the volume of the following
Answer:
22 ft³
Step-by-step explanation:
Applying,
V = 1/3(Ah).................... Equation 1
Where V = Volume of the pyramid, A = Area of the base, h = height of the pyramid.
But,
A = 1/2bl................ Equation 2
Where b = base of the triangle. l = height of the triangle.
Substitute equation 2 into equation 1
V = 1/6(blh).............. Equation 3
From the diagram,
Given: b = 3 ft, l = 4 ft, h = 11 ft
Substitute these values into equation 3
V = 1/6(3×4×11)
V = 1/6(132)
V = 22 ft³
For the following right triangle, find the side length x. Round your answer to the nearest hundredth. X, 18, and 10
Answer:
152
Step-by-step explanation:
All segments in a triangle add to 180. 1
8+10+x=180
x=152
The length x using Pythagoras theorem is 15 unit.
What is Pythagoras theorem?According to the Pythagorean theorem, the square of the hypotenuse of a right triangle equals the sum of the squares of the other two sides.
Given:
Hypotenuse = 18 unit
Perpendicular = 10 unit
using Pythagoras theorem
H² = P² + B²
18² = 10² + B²
324 = 100 + B²
324 - 100 = B²
B² = 224
B= 14.966 unit
B= 15 unit
Thus, the measure for x is 15 unit.
Learn more about Pythagoras theorem here:
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please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!
Answer:
1809.6
Step-by-step explanation:
Volume of a cylinder
V= pie* r ^2*h
Answer:
v = 1,809.56
Step-by-step explanation:
Formula=
V = Pi (3.14) r^2 h
pi 6^2·16
can someone tell me what “increase s by 2s” is
Answer:
It means goes up by twos for example 2,4,6,8 all those numbers increase by 2s.
Step-by-step explanation:
What is the average rate of change for this exponential function for the interval from x = 7 to x = 8?
Answer:
4374
Step-by-step explanation:
Since, we are given table for x and y values
and table for average rate of changes
we can see the pattern of average rate of change
average rate of change for 5 to 6 is three times average rate of change for 4 to 5
but we have to find
average rate of change for 7 to 8
so, using same pattern
average rate of change for 6 to 7 is three times average rate of change for 5 to 6
average rate of change for 7 to 8 is 3*3( average rate of change for 5 to 6)
so, we can plug value
average rate of change for 7 to 8 is 3*3*486
average rate of change for 7 to 8 is 4374
If f(x) = 3x + 4, what is the value of f(-4)?
Answer:
-8
Step-by-step explanation:
f(x) = 3x + 4
substitute -4 in place of x
f(-4) = 3*-4 + 4
f(-4) = -12 + 4
f(-4) = -8
Ravi bought 3 pens and 4 notebooks for $28. Lola bought 4 pens and 8
notebooks at the same store for $52. How much does one notebook cost?
Answer:
5.50 Each
Step-by-step explanation:
Answer:
Step-by-step explanation:
3P + 4N = 28
6P+ 8N = 56
4P +8N 52
2P = 4
P = 4/2 = 2 = $2
3(2)+4N = 28
4N = 28-6=22
N = 22/4 = 5.5= $5.50= cost of one notebook
answer?? please?? answer.
Answer:
1=65+72
=137 degrees,,,
how do i find the lateral area.
Answer:
lateral surface area(As)=2πrh or
=PH
Step-by-step explanation:
hope this helps :)
find the vertex of this quadratic??
Answer:
(0,3)
Step-by-step explanation:
In this case the vertex is the maximum point of the parabola
vertex : (0,3)
Two chords intersect in the interior of a circle. One chord is divided into two segments measuring 8 units and 9 units. The other chord is
divided into two segments, one of which measures 3 units.
What is the measure of the other segment?
Answer:
Step-by-step explanation:
1. When two chords intersect each other inside a circle, the products of their segments are equal. ... One chord is cut into two line segments A and B. The other into the segments C and D. This theorem states that A×B is always equal to C×D no matter where the chords are.
2. If two chords intersect inside a circle, then the measure of the angle formed is one half the sum of the measure of the arcs intercepted by the angle and its vertical angle . In the figure, m∠1=12(m⌢QR+m⌢PS) .
3. The intersecting chords theorem or just the chord theorem is a statement in elementary geometry that describes a relation of the four line segments created by two intersecting chords within a circle. It states that the products of the lengths of the line segments on each chord are equal.