Evaluate the question.
-8x = 90

A.) x = 82
B.) x = 45/4
C.) x = -45/4
D.) x = -82

Answers

Answer 1

Answer:

C.) x = -45/4

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Step-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 = -45/4

Related Questions

Line A (y = x + 2) is transformed into Line B (y=3x+1). Which best describes the new slope and y-intercept?

Answers

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.

Answers

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.

Answers

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?

Answers

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

Answers

Answer:

3/10

Step-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​

Answers

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 :)

Answers

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

Answers

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.

Answers

Answer:

D i think sorry if it's wrong

Step-by-step explanation:

The answer is A (A)

This is because point A will not move when ABC is dilated (expanded) to form ADE. This is why A is the centre of the dilation.

sarah read 20% of a book that was 150 pages long. how many pages did sarah read?​

Answers

Sarah read 30 pages of the book

Sarah read 30 pages..

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?

Answers

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

Answers

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?

Answers

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

Answers

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?

Answers

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​

Answers

Answer: The answer to this is 7.

Given, to find the value of 'x'

By using pythagoras theorem

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: (____,___)

Answers

[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.

Answers

Answer: B






Explanation: When a number is directly followed by a variable (ex. 10y), it indicates multiplication. So in this case, when you dissect the expression 3t, it becomes 3*t. For both addition and subtraction, it would be the normal format: 3+t and 3-t. For division it would be 3 over t (fraction format).


Hope that helps シ
Answer is B
when a number is by a variable with nothing between them like a plus minus or division sign you always multiply

In the figure, x = , y = , and z = .

Answers

there’s no image attached, ask the question again

Find the volume of the following

Answers

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

Answers

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:

https://brainly.com/question/343682

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please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!

Answers

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

Answers

Answer:

It means goes up by twos for example 2,4,6,8 all those numbers increase by 2s.

Step-by-step explanation:

probably means that whatever number you have goes up by two how ever many times. So if you have 1 it would increase to 3 or if you had 2 it would increase to 4

What is the average rate of change for this exponential function for the interval from x = 7 to x = 8?

Answers

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)?

Answers

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?

Answers

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.

Answers

Answer:

1=65+72

=137 degrees,,,

how do i find the lateral area.

Answers

Answer:

lateral surface area(As)=2πrh or

=PH

Step-by-step explanation:

hope this helps :)

find the vertex of this quadratic??

Answers

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?

Answers

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.

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