Answer:
[tex]\frac{2}{y+1}[/tex]
Step-by-step explanation:
Factorise the denominator of the second fraction
y² - 1 = (y - 1)(y + 1) ← difference of squares
To obtain a common denominator
multiply numerator/ denominator of first fraction by (y + 1)
= [tex]\frac{2(y+1)}{(y-1)(y+1)}[/tex] - [tex]\frac{4}{(y-1)(y+1)}[/tex] ← subtract numerators leaving the common denominator
= [tex]\frac{2y+2-4}{(y-1)(y+1)}[/tex]
= [tex]\frac{2y-2}{(y-1)(y+1)}[/tex]
= [tex]\frac{2(y-1)}{(y-1)(y+1)}[/tex] ← cancel common factor (y - 1) on numerator/denominator
= [tex]\frac{2}{y+1}[/tex]
PLEASE HELP ME PLEASEEEEE
Answer:
56.52 units³
Step-by-step explanation:
[tex]v = \pi {r}^{2}h[/tex]
r = 3 units ; h (height) = 2
V = 3.14 × 3² × 2
= 3.14 × 9 × 2
= 56.52 units³
Question 83 pts
Given that 2 Al + 6 HCl → 2 AlCl3 + 3H2
UR ON TIMER GO FASTtt How many moles of hydrogen are produced if we start from 2.2 mol Al and 4.2 mol HCl?
2.1
mol H2
How many moles of excess reactant are left over?
Answer:
Ummm I dont know what subject it is so i will guess 2.3?
Step-by-step explanation:
I'm Sorry im really useless
Alicia bought a notebook and several erasers at the student store. The graph shows the relationship between the total cost of her items and the number of erasers she purchased.
What is the cost of each eraser?
Answer:
1.50
Step-by-step explanation:
Find the AOS, vertex and sketch the parabola.
5) y=-x2 + 4x+3
vertex:
AOS:
6 Find the Surface Area of the below image. 4 cm 10 cm 7 cm Part A There are pairs of rectangles in this Rectangular Prism.
Answer:
I think the surface area is 276 if I'm not mistaken hope this helps!
What is congruent in this problem?
Answer:
Step-by-step explanation:
SVT and TVU
Hope that helps!
29 = 3t + cos(t) solve for t
Answer: t ≈9.9543..
Step-by-step explanation:
Answer:
T= 9.6... or 10
Step-by-step explanation:
29= 29/3
=9.6...
The Sugar Sweet Company will choose from two companies to transport its sugar to market. The first company charges $7500 to rent trucks plus an additional fee of $150.25 for each ton of sugar. The second company charges $7143 to rent trucks plus an additional fee of $175.75 for each ton of sugar.
Answer:
14 tons of sugar
$9603.5
Step-by-step explanation:
For what amount of sugar do the two companies charge the same?
What is the cost when the two companies charge the same?
Let
x = ton of sugar
Company A:
7500 + 150.25x
Company B:
7143 + 175.75x
1. Equate company A and company B
7500 + 150.25x = 7143 + 175.75x
7500 - 7143 = 175.75x - 150.25x
357 = 25.50x
x = 357/25.50
x = 14 tons of sugar
2. Cost when both companies charge the same
Company B:
7143 + 175.75x
= 7143 + 175.75(14)
= 7143 + 2460.5
= 9603.5
Company B = $9603.5
Company A:
7500 + 150.25x
= 7500 + 150.25(14)
= 7500 + 2103.5
= 9603.5
Company A = $9603.5
11) Help pls I have the answer I just need to show the work.
True or False. To find the missing side length in the diagram, use the Pythagorean Theorem.
Answer: A
You charge $2 per square yard to paint.Which equation can you solve to find the amount you will charge to paint a triangular wall with a base of 4 yards and a height of 6 yards?
Answer:
2(1/2 x 4 x 6) = x
expaination:
area of triangle = 1/2 x 2 x 6 sq yards
multiply by $2/sq yard
Answer: $24
Step-by-step explanation:
The formula for a triangle is 1/2 times base times height
so 0.5 x 4 x 6
0.5 x 4 = 2
2 x 6 = 12
12 x $2 = 24
so you charge $24 dollars
Hope this helps.
The table shows the possible outcomes for choosing one rose and one tulip.
A 3-column table with 3 rows. Column 1 has entries Yellow rose, white rose, red rose. Column 2 is labeled purple tulip with entries (P, Y), (P, W), (P, R). Column 3 is labeled Orange tulip with entries (O, Y), (O, W), (O, R).
How many total possible outcomes are there?
5
6
9
11
Answer:
6
Step-by-step explanation:
Took the test
Answer:
6
Step-by-step explanation:
Find the area of the yellow region.
Round to the nearest tenth.
5 ft
Area = [ ? ] ft2
Answer:
yellow area = 5.37 ft²
Step-by-step explanation:
area of square = L x W = 5 x 5 = 25 ft²
radius = 2.5 ft
area of circle = PiR² = (3.14)(2.5²) = 19.63 ft²
25 - 19.63 = 5.37 ft²
The area of the yellow region is 5.375 square feet.
What is area?Area is the amount of space occupied by a two-dimensional figure. In other words, it is the quantity that measures the number of unit squares that cover the surface of a closed figure. The standard unit of area is square units which is generally represented as square inches, square feet, etc.
Given that, the side of a square = 5 feet and radius of a circle = 2.5 feet.
Here, area of a square = side²
= 5²
= 25 square feet
Area of a circle = πr²
= 3.14×2.5²
= 19.625 square feet
So, the area of the yellow region = 25-19.625
= 5.375 square feet
Therefore, the area of the yellow region is 5.375 square feet.
Learn more about the area here:
https://brainly.com/question/27683633.
#SPJ2
WILL MARK BRAINLIEST!!!!!!!!!
what is 5/1 as a whole number
Answer:
5
Step-by-step explanation:
5÷1
i m not sure but i like its ans
Complementary angles are two angles whose
measures add to 90°. The ratio of the measures of
two complementary angles is 7:11. What are the
measures of the angles?
Answer:
let the two complementary angles be x and 90-x
x= 7t (say)
90-x= 11t
x+90-x=90= 7t+11t=18t
90=18t
t=90/18= 10/2= 5
so x= 7×5=35 degrees
and 90-×=90-35=55 degrees
Answer:
Step-by-step explanation:
Say thanks
mark brainlist
and rate 5!
x= 7t (say)
90-x= 11t
x+90-x=90= 7t+11t=18t
90=18t
t=90/18= 10/2= 5
so x= 7×5=35 degrees
and 90-×=90-35=55 degrees
it 1 print is = to 2 cups,then 5 prints would = ____ cups
Answer:
5 pints = 10 cups
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
5 * 2 = 10
i’ll give brainliest help a girl out
Answer:
ST, WX
Step-by-step explanation:
Answer:
ST and WX are congruent
A rectangular prism has a volume of 80 cubic feet. The length of the prism is 8 feet and the height of prism is 4 feet. What is the width of the prism?
Answer:
2.5
Step-by-step explanation:
8 times 4 is 32, and 80/32 is 2.5. When you have to find another measurement and you know 2 of them, you just have to divide the total of the 2 measurements with the volume. it would be 2.5 feet as the height.
What will be the linear equation for the shown table?
Answer:
y=2x+5
Step-by-step explanation:
To find a linear equation you must find the slope and y intercept to create an equation in y=mx+b form (slope-intercept form)
So slope is = y2-y1 / x2-x1 [2 and 1 are subscripts] so 11-7/3-1 so m=4/2 = 2
Slope = 2, now find b
So using y = mx + b, substitute what you know so 7 = 2(1) + b so b=7-2 = 5
Put it all together y = 2x + 5
Brian earns $5 per hour babysitting. He makes a graph and plots what he
earns for different numbers of hours. He places the number of hours he
works on the x-axis and his earnings on the y-axis. What is the slope of the
line that Brian graphs?
Answer:
The slope of the line is 5
Step-by-step explanation:
When we talk of the slope of a straight line graph, we refer to the rate at which the values on the y-axis changes as a ratio of the changes we have on the x-axis
Now, from the question, number of hours is placed on x-axis, while we have the amounts on the y-axis
having $5 per hour means the rate of change of what is earned to number of hours worked is 5 and this is the slope of the line
What is 5 4/7 as an improper fraction
Answer:
39/7
Step-by-step explanation:
Step 1
Multiply the denominator by the whole number
7 × 5 = 35
Step 2
Add the answer from Step 1 to the numerator
35 + 4 = 39
Step 3
Write answer from Step 2 over the denominator
39/7
Find the equation of the linear function represented by the table below in slope-intercept form. The table is in the picture below
Answer:
Y = 4x + 1
Step-by-step explanation:
1 × 4 + 1 = 5
2 × 4 + 1 = 9
3 × 4 + 1 = 13
4 × 4 + 1 = 17
Help me please, thank you!
Answer:
8
Step-by-step explanation:
18-10=8 units
Answer:
8
Step-by-step explanation:
The total height of the rectangle and triangle is given as 18
The height of the rectangle is given as 10 , then
height of triangle = 18 - 10 = 8
A woman is four times older than her daughter,eight years later their age bracket would be 74 and 18 respectively.What is their present ages
Answer:
Step-by-step explanation:
w is less than or equal to 4 and greater than or equal to -8
Answer:
[tex]4 \geqslant w \geqslant - 8[/tex]
Graph this: y = 2sIn(x) - 3
Insert picture of graph
Answer:
We have the function:
f(x) = 2*sin(x) - 3
To graph this type of functions is useful to understand the parts of the function.
A general one is written as:
g(x) = A*sin(w*x + p) + M
where:
A is the amplitude
w is the angular frequency.
p is the phase
M is the midline.
Then in this case we have an amplitude of 2, an angular frequency of 1, a phase of 0 radians and the midline y = -3
Now we can evaluate the function in different points and (knowing how a sine function behaves) connect them, the graph will look something like this:
Is the following expression greater than, less than, or equal to zero? (a^2+b^2)/(a^2+b^2+1)
so I think it's equal to but can someone verify it for me?
Answer:
is equal cuz a will be cut and be will be cut so what is left 1 is left so it is equal plz Mark me as the brainliest and thank me
PLEASE HELP ASAP!!! will mark brainliest
dont answer if u dont know and no links
Answer:
9 sq un
Step-by-step explanation:
solve for x in example 2. x =_________
10x+20=145
A triangle has two angle measures of 20 degrees and 30 degrees. Find the third angle. This triangle is a(n) ________ triangle
Question 2 options:
A. acute
B. obtuse
C. right
D. it does not make a triangle
Answer:
Obtuse
Step-by-step explanation:
x = missing angle
20+30+x=180
50+x=180
x=130
90<130
Thus, the triangle is obtuse
Consider the line 7x+8y=-5.
What is the slope of a line perpendicular to this line?
What is the slope of a line parallel to this line?
Answer:
Step-by-step explanation:
7x + 8y = -5
8y = -7x - 5
Divide the whole equation by 8
[tex]\frac{8y}{8}=\frac{-7x}{8}-\frac{5}{8}\\\\y =\frac{-7}{8}x-\frac{5}{8}[/tex]
Parallel lines have same slope
Slope of the parallel line = (-7/8)
Slope of the line perpendicular to this line = -1/m = -1 ÷ (-7/8)
[tex]= (-1)*\frac{8}{-7}\\\\= \frac{8}{7}[/tex]