Answer:
Explanation:
in each of the following substitute x with the variables in the bracket.
f(a) = 5x - 6
= 5a - 6
f(a+h) = 5 (a + h) - 6
= 5a + 5h - 6
f(a+h) - f(a) = (5a + 5h - 6) - (5a - 6)
= 5a + 5h - 6 - 5a + 6
= 5h
(as the 5a's and 6's cancel each other out.)
f(a+h) - f(a)/h = 5a + 5h - 6 - ((5a - 6)÷h)
take l.c.m
= (5ah + 5h^2 - 6h - 5a + 6)
h
Samantha mixed some sugar , flour , salt , baking soda to make a cake . the total mixture was 1 1/4 cups . The mixture included 2 1/2 cups of sugar . How much of the mixture was flour , salt , and baking soda
Answer:
11/4. or im mixed form 2 3/4
Step-by-step explanation:
I hope it helps!!
Which of the following systems of equations is an example of one where elimination is the best method?
Answer:
(d)
Step-by-step explanation:
Elimination is a good choice of solution method when the coefficient of a variable in one equation is a simple multiple of the coefficient of that same variable in the other equation. This is the case for the system in the last choice. (see attached)
__
We can consider the alternatives:
(a) substitution for y would work well
(b) the solution is given, no solution effort is required
(c) substitution for y would work well
(d) elimination would work well.
3(2x +3y) +(-6x +y) = 3(18) +(12) . . . . . eliminates x (y=6.6)
(2x +3y) -3(-6x +y) = (18) -3(12) . . . . . . eliminates y (x=-0.9)
What fractional parts is this ruler divided into?
thirds
fourths
halves
fifths plzz help
Answer:
B. fourthsStep-by-step explanation:
Each interval between the whole numbers is divided into 4 equal parts.
Correct choice is BExpand and combine like terms.
(2x3 + 4x5)2 =
Answer:
52
Step-by-step explanation:
(2x3 = 6
4x5 = 20)
(6+20) = (26)
(26)2 = 52
=52
… I don’t know what to say but the question on the photo I sent pls help me it’s due in 30 MINUTES!!!
Answer: Hope this all helps :)
Step-by-step explanation:
Identify the lower class limits, upper class limits, class
width, class midpoints, and class boundaries for the
given frequency distribution. Also identify the number of
individuals included in the summary,
Age (yr) when
award was won Frequency
5-9
31
10-14
34
15-19
14
20-24
2
25-29
5
30-34
2
35-39
2
Identify the lower class limits.
Answer:
lower class limits:
5, 10, 15, 20, 25, 30, 35
Step-by-step explanation:
Find The Value of X
A. 10
B. 14
C. 9
D. 16
Answer:
10
Step-by-step explanation:
8-6=2 so you would do 12-2
Solve the following application problem. Be sure to show your system of equations and the steps to solve the problem.
Application Problem: It takes a boat 2 hours to go 16 miles downstream with the current and 4 hours to return against the current. Find the speed of the boat in still water and the speed of the current.
Answer:
boat: 6 mphcurrent: 2 mphStep-by-step explanation:
The relationship between time, speed, and distance is ...
speed = distance/time
For boat speed b and current speed c, the speed downstream is ...
b +c = (16 mi)/(2 h) = 8 mi/h
The speed upstream is ...
b -c = (16 mi)/(4 h) = 4 mi/h
Adding the two equations eliminates the c term:
2b = 12 mi/h
b = 6 mi/h . . . . . divide by 2
Solving the second equation for c, we get ...
c = b -4 mi/h = 6 mi/h -4 mi/h = 2 mi/h
The speed of the boat in still water is 6 mi/h; the current is 2 mi/h.
Find the 13th term of the geometric sequence 5, 10, 20, ...
why does Soto most likely include this characterization of Alfonso's mother in the story?
Answer:
To convey the sense that Alfonso is concerned about how others perceive him.
Answer:
To convey the sense that Alfonso is concerned about how others perceive him.Step-by-step explanation:
please help how to do this i need help please
factor the polynomial completely 6x^2-3x+2
answer choices are in photo, a,b,c or d cannnot be factored.
Answer:
can't be factored
answer is D
Dimitri paid the same price for five different stocks. The table shows the change in the price of the stocks since he purchased them.
A 2-column table with 5 rows. Column 1 is labeled Stock with entries A, B, C, D, E. Column 2 is labeled Change in price with entries negative 4.15, positive 1.30, positive 8.75, negative 10.10, negative 3.55.
What is the magnitude of the change of Stock A?
Answer:
The answer is d on eg.2021
Step-by-step explanation:
i did the assignment
Answer:
answer D
:)
Step-by-step explanation:
(person above me is right!)
What is the value of x in the equation 3x + 2 + 3(1+x) = 23?
if u get it right in under 15 minutes i'll mark u brainllist
Answer:
3
Step-by-step explanation:
Let's start by simplifying the parenthesis. Distribute the 3 to the terms in it.
3x + 2 + 3 + 3x = 23
Simplify the like terms.
6x + 5 = 23
Isolate the x term by subtracting 5 on both sides.
6x = 18
Divide both sides by 6 to get the value of x.
x = 3
please need help with math probelm if do 5 star
Answer:
The cost of 50 pounds of beans is $40.
Step-by-step explanation:
First, we find the slope:
[tex]\frac{8-4}{10-5} = \frac{4}{5}[/tex]
Now we know can find the equation of the graph:
[tex]y=\frac{4}{5} x[/tex]
Instead of x, we can plug in 50:
[tex]y=\frac{4}{5} *50\\y=\frac{200}{5} \\y=40[/tex]
a figure is dilated by a factor of 3/4. by what factor will the area of the figure change
The area of the figure changes by a factor of 9/16, when the figure is dilated by a factor of 3/4
What is dilation?When a shape is dilated, the size of the shape changes (i.e. it either compresses or enlarges)
The scale factor (k) is given as:
[tex]k = \frac 34[/tex]
The area of the shape will change by the square of the scale factor.
So, we have:
[tex]Area = k^2[/tex]
This gives
[tex]Area = (\frac 34)^2[/tex]
[tex]Area = \frac 9{16}[/tex]
Hence, the area of the figure changes by a factor of 9/16
Read more about dilation at:
https://brainly.com/question/8532602
In the figure below, angle y and angle x form vertical angles. Angle y forms a straight line with the 60° angle and the 70° angle. A straight line is shown and is marked with three angles. The first angle measures 60 degrees. The second angle measures 60 degrees. The third angle is labeled y. The line between the 70 degree angle and angle y extends below the straight line. The angle formed is labeled angle x. Write and solve an equation to determine the measure of angle x.
Answer:
The value of x is 50°.Step-by-step explanation:
We know that:
x = y2(70 + 60) + x + y = 360Work:
2(130) + x + x = 360=> 260 + 2x = 360=> 2x = 360 - 260=> 2x = 100=> x = 50Hence, the value of x is 50°.
Hoped this helped.
[tex]BrainiacUser1357[/tex]
Answer:
x =50° , y = 50°
we know that angles on a straight line equals to 180°
here,
y + 70° + 60° = 180° ( as lies on straight line )
y = 180° - 70° - 60° ( changing sides, changes the sign + to - and - to positive )
y = 50°
we can see y = x as they are parallel to each other
so x = 50°
Debbie's bank offers an online bill pay service. For this, the bank charges $2.25 per month plus $0.10 per bill paid using the service. How many bills does she pay each month if the charges are always between $3.50 and $5.00? (Note: She is not allowed to pay part of a bill.)
Based on the information given, the number of bills will have to be between 13 and 28 every month.
Solving equationsLet the number of bills be represented by x.
Therefore, the equation to solve the question will be:
2.25 + (0.10 × x) = 3.50
2.25 + 0.10x = 3.50
0.10x = 3.50 - 2.25
0.10x = 1.25
x = 1.25/0.10 = 12.5 = 13
Also, 2.25 + 0.10x = 5.00
0.10x = 5.00 - 2.25
0.10x = 2.75
x = 27.5 = 28
Therefore, the number of bills will be between 13 and 28 every month.
Learn more about equations on:
https://brainly.com/question/13763238
Anna paddled 16 km up river to see her uncle, and then returned downstream to her home. The river flows at a rate of 6 km/h, and Anna paddles at a rate of 10 km/h. What was her average speed in km/h?
Anna average speed in km/h is 7.5 km per hour
Average speed
Average speed is the ratio of total distance covered to total time taken. It is given by:
Average speed = Total distance / total time
Given the distance upstream is 16 km at a rate of 6 km/h, hence:
6 = 16/tt = 2.67 hoursThe distance downstream is 16 km at a rate of 10 km/h, hence:
10 = 16/tt = 1.6 hoursTotal distance = 16 km + 16 km = 32 km
Total time = 2.67 + 1.6 = 4.27 hours
Average speed = 32 / 4.27 = 7.5 km per hour
Anna average speed in km/h is 7.5 km per hour
Find out mote on average speed at: https://brainly.com/question/4931057
Can someone help me please!
Answer:
A
Step-by-step explanation:
the max range on y-axis is 4 and min value on y-axis is - infinity . So A is the answer.
Triangle A is an isosceles triangle with two angles of measure x degrees and one angle of measure y degrees.
1. Find three combinations of x and y that make this sentence true.
2. Write an equation relating x and y.
3. If you were to sketch the graph of this linear equation, what would its slope be?
Answer:
See belowStep-by-step explanation:
1.
Angle combinations:
x, y , x; x, x, y;y, x, x2.
Sum of angles:
x + x + y = 180 ⇒ 2x + y = 1803.
Linear equation:
2x + y = 180 ⇒ y = - 2x + 180The slope is - 2.
What is the range of (f•g)()
all real numbers excepty=3
all real numbers except y=0 all real numbers excepty=3
all real numbers
Answer:
answer is all real numbers excepty=3
Step-by-step explanation:
ez
In a triangle the base is 4/7 the height and their sum is 110cm. A square is 7/8 of the triangle. Calculate the perimeter of the square
Answer:
60 cmStep-by-step explanation:
Let the height is x, the the base is 4/7x.
Their sum is 110 cm:
x + 4/7x = 11011/7x = 110x = 70The base is:
110 - 70 = 40 cmThe area of the triangle is:
A = 1/2bh = 1/2*70*40 = 1400 cm²Area of the square:
1400*7/8 = 1225 cm²Side of the square:
√1225 = 15 cmPerimeter of the square:
15 cm * 4 = 60 cmWhat is the value of this expression?
2/3 + (-5/7)
[tex] \frac{2}{3} + ( - \frac{5}{7} ) \\ = \frac{2 \times 7 - 5 \times 3}{21} \\ = \frac{14 - 15}{21} \\ = \frac{ - 1}{21} [/tex]
Answer:
[tex] \frac{ - 1}{21} [/tex]
Hope you could understand.
If you have any query, feel free to ask.
Monica makes tomato sauce with the plants
she grows in her garden. She uses 3 basil
leaves in her sauce foi every 8 tomatoes.
She is making a big batch of sauce with 32
tomatoes from her garden.
How many basil leaves should Monica use In
her sauce?
Answer:
12 Basil Leaves
Step-by-step explanation:
32/8=4
4*3=12
Explain how to divide an amount by 3 With the sentence starter Since division is just reverse multiplication
Division is just reverse multiplication, just with some added parts to it. And, how do I divide the "amount of 3 with the sentence starter" when there isn't a photo or number in the question other then 3?
The sum of two numbers is 72. Their difference is 10. Find the numbers.
Answer:
80 and 8
Step-by-step explanation:
Substitute x in first equation with x=10y. So y = 8. x=80. Thus the 2 numbers are: x=80 and y=8.
PLS ANSWER FAST I WILL MARK BRAINLIST
solve for x ~
13x = 169
thankyou~
The result of solving for x in the given equation: 13x = 169 is; x = 13
Solving one variable equationsThe given equation is;
13x = 169.Hence, we must get rid of the coefficient of x by dividing both sides of the equation by 13;
Therefore, x = 169/13
x = 13Read more on solving for x;
https://brainly.com/question/9423572
please help!!!!!!!!!!
Step-by-step explanation:
Left side: 18cm
Under that: 5cm
5cm again
Perimeter = 76
Because: 20 + 18 + 18 + 5 +5 +5 +5 = 76
