Answer:
-3*9=27
-3+-9=-12
Step-by-step explanation:
hope it helps
Simplify the expression given below.
X+2/x^3+2x^2-9x-18 divided by 3x+1 / x^2-9
A. 1 / (x+3)(x-3)
B. 3x +1
C. 1 / 3x+1
D. 3x + 1 / (x+3) (x-3)
Answer:
D
Step-by-step explanation: your welcome have a good day
Answer:
C. [tex] \dfrac{1}{3x + 1} [/tex]
Step-by-step explanation:
[tex] \dfrac{x + 2}{x^3 + 2x^2 - 9x - 18} \div \dfrac{3x + 1}{x^2 - 9} = [/tex]
Factor all polynomials.
[tex] = \dfrac{x + 2}{x^2(x + 2) -9(x + 2)} \div \dfrac{3x + 1}{(x + 3)(x - 3)} [/tex]
[tex] = \dfrac{x + 2}{(x^2 - 9)(x + 2)} \div \dfrac{3x + 1}{(x + 3)(x - 3)} [/tex]
[tex] = \dfrac{x + 2}{(x + 3)(x - 3)(x + 2)} \div \dfrac{3x + 1}{(x + 3)(x - 3)} [/tex]
To divide by a fraction, multiply by its reciprocal.
[tex] = \dfrac{x + 2}{(x + 3)(x - 3)(x + 2)} \times \dfrac{(x + 3)(x - 3)}{3x + 1} [/tex]
Cancel out common factors in the numerator and denominator.
[tex] = \dfrac{1}{3x + 1} [/tex]
Edward plans to put $75 into a savings account. He can place his money into an account represented by b(x) = 7x + 75, or into another account represented by c(x) = 75(1.06)x. Which account has the highest value in 2 years? Which account has the highest in 12 years?
Answer:
the answer is the option B
b(x) has the highest value in years; b(x) has the highest value in years
Step-by-step explanation:
x------> the time in years
b(x)----> the value in dollars of a saving account
c(x)----> the value in dollars of another account
we know that
Step 1
Find the value of each account for
so
----> b(x) has the highest value in years
Step 2
Find the value of each account for
so
----> b(x) has the highest value in years
answer for brainliest
Answer:
the last option is the right answer
Step-by-step explanation:
last week:
d = 18
d = 18h = 6
this week:
d = 2.5h
i. if she walked for 6 hours this week, h = 6
d = 2.5h
d = 2.5 × 6
d = 15
* this means she walked at slower pace this week as she can only cover 15 miles in 6 hours whereas she can cover 18 miles in 6 hours last week
ii. if she walked for 18 miles this week, d = 18
d = 2.5h
18 = 2.5h
h = 18/ 2.5
h = 7.2
* this means she walked at a slower pace this week as she needs 7.2 hours to cover 18 miles whereas she only need 6 hours last week
What is 2/9+1 1/2= What
What does x=? I'm really not sure about this.
Answer:
9
Step-by-step explanation:
For this, we need to know the scale factor first. We can do that by looking at a same side of the two shapes.
CD = 2 and ML = 3.6
3.6 / 2 = 1.8
just to confirm, let's take MN = 7.2 and DE = 4
7.2 / 4 = 1.8
So now we know the scale factor is 1.8
Now to figure out x, we just need to use BA = 5
and because the scale factor is 1.8
so we just need to do: 5 * 1.8 = 9
What five digits appear as the last digit of the multiples of 2
Answer:
0, 2, 4, 6, 8
Step-by-step explanation:
the first couple of multiples of 2 are...
2, 4, 6, 8, 10
the last digits are 0, 2, 4, 6, 8...
so, 0, 2, 4, 6, 8 are the last digits!
Find all possible solutions for x and y such that △ABC is congruent to △DEF.
△ABC: sides of length 19, 25, and 3x − 3.
△DEF: sides of length 25, 15, and 5 − y.
△ABC ≅ △DEF when x is ___ and y is ___.
Answer:
Step-by-step explanation:
it means the ABC And DEF have side lengths of 15,19, 25
so 3x-3 = 15
x = 6
5-y = 19
so y = -14
The scale factor from the large triangle to the small triangle is 3:1 What is the length of side x of the smaller triangle CAN SB PLEASE HELP ME OUT!
Answer:
x = 10
Step-by-step explanation:
From what we can see in the diagram, the smaller triangle dimensions were dilated by a factor of 3
So to get the dimensions of the smaller from the bigger or larger triangle, we proceed to divide what we have on the larger triangle by 3
Kindly note that we do this for the comparable sides
Mathematically, we can have x as;
30/3 = 10
The volume of the world's oceans is nearly 1.5⋅10^9 cubic kilometers. Write this number in scientific notation.
Answer:
"The World Ocean." The Columbia Encyclopedia. CD-ROM. 2007, 6th Ed. New York: Columbia University Press. "The World ocean has an area of about 361 million sq km (139,400,000 sq mi), an average depth of about 3,730 m (12,230)
Viau, Elizabeth Anne. World Builders: Water on Earth. California State University Los Angeles. 2003.
There are two origins of water: comets (extraterrestrial bombardment) and out gassing (condensation of steam from early volcanism). These processes are continuing today.
Step-by-step explanation:
Please HELP. She finished these tant in no more than 30
Answer:
what
Step-by-step explanation:
A line with a slope of 1/3 passes through (-5,r) and (4,1).
To make this work correctly, the value of r=
Answer: Add the 1/3 to look for the r
Find the product of 5/6 and 42
Answer: Its 35 hope this helped
Need help ASAP!!!!!!!
3. Spiral Review: Solve the equation algebraically. Show all work. Circle your final solution.
4z +5= - 3z-8
Answer:
z=-13/7
Step-by-step explanation:
1. Add 3z(7z+5=-8)
2. Subtract 5(7z=-13)
3. Divide 7(z=-13/7)
Find the value of k,if 3x+ky-1=0,7x-3y+3=0 are perpendicular.
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how do I find the inverse of the first function ?
[tex]\boxed{\boxed{\pink{\sf \leadsto Hence \ the \ Inverse \ of \ the \ given \ function \ is \ x^2+2x-4 .}}}[/tex]
Step-by-step explanation:A function is given to us , and we need to find its inverse. So the function is ,
[tex]\bf\implies f(x) = \sqrt{x + 5 } - 1 [/tex]
So , firstly replace x with y in the given function and then solve for y to get its inverse . Taking the given function ,
[tex]\bf \implies f(x) = \sqrt{x+5}-1\\\\\bf\implies y = \sqrt{x+5}-1 \\\\\bf\implies x = \sqrt{y+5}-1 \:\:\bigg\lgroup \red{\sf Replacing \ x \ with \ y .} \bigg\rgroup \\\\\bf\implies x + 1 = \sqrt{y+5}\\\\\bf\implies y+5 = (x+1)^2 \\\\\bf\implies y+5 = x^2+1 +2x \\\\\bf\implies y = x^2+1-5+2x \\\\\bf\implies y = x^2-4+2x \\\\\bf\implies \boxed{\red{\bf f^{-1}(x)= x^2+2x - 4 }}[/tex]
Here I have also attached the graph of , x² + 2x - 4 and √(x+5) - 1. Here blue graph is of √(x+5) - 1 & red of x²+2x-4.
Hence the inverse f -¹(x) of the given function is x² + 2x - 4 .evaluate _1001 3.
please guys this one answer me
please follow me
Answer:
here is your answer....
(1001)^3
(1000+1)^3
1000^3+3*1000^2*1+3*1000*1^2+1^3
1000000000+3*1000000+3*1000+1
1000000000+3000000+3000+1
ans: 1003003001 ..
I hope this will help you...
What is one of the greatest problems in Brazil?
O education
O language
O transportation
Answer:
c transportation
Step-by-step explanation:
BRAINLIEST. Ariana has a loyalty card good for a discount at her local hardware store. The item she wants to buy is priced at $9, before discount and tax. After the discount, and before tax, the price is $7.56. Find the percent discount.
Answer:
16%
Step-by-step explanation:
Given data
Initial cost= $9
final cost= $7.56
Required
The percent discount
Step two
Percent discount= final-initial/initial *100
Percent discount= 9-7.56/9 *100
Percent discount=1.44/9 *100
Percent discount=0.16 *100
Percent discount=16%
Hence the percent discount is 16%
Yes
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Half the area of the rectangle shown is 24 inches. Write and solve an equation to find the value of 'x'
Answer:
The answer will b 4
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
What is the slope of the line that passes through the points (4,5) and (12,7)?
Answer:
(2,8)
Step-by-step explanation:
If we plot both points on the graph and start at (4,5) we count up (rise) 2 and to the right (run) 8. This means they are both positive numbers as it goes up and to the right.
*Down or to the left would be negative.
Please Help If You Know The Answer! :) Which expression is equivalent to 8-(6r+2)?
A. -6r+6
B. 2r+2
C. 6r+10
D. -6r+10
Answer:
d
Step-by-step explanation:
take out of parenthesis so its 8-6r+2 and the 8 and to to get 10 and the -6r stays the same
how to find the trigonometric ratio
Answer:
tanZ° = 3/4
General Formulas and Concepts:
Trigonometry
[Right Triangles Only] tanθ = opposite over adjacentStep-by-step explanation:
Step 1: Identify Variables
Angle θ = Z
Opposite Leg XY = 21
Adjacent Leg YZ = 28
Step 2: Find Trig Ratio
Substitute [tangent]: tanZ° = 21/28Simplify: tanZ° = 3/4The surface area "S" of a sphere of radius ris given by the forma
S=4pir^
Find (i) the surface area of a sphere whose radius is 5 cm.
There were 20 questions on an exam. You answered 40% of them incorrectly. How many did you answer incorrectly?
Answer: 4
Step-by-step explanation: 20-10=10 which is %50. 20-16=4
NEED HELP PLEASE 20 POINTS!!!!
May you please help me with this question!
Answer:
9/4x to the power of one plus 12y to the power of one
Step-by-step explanation:
You can add the top numbers for 9, but cant add the bottoms since they are different variables.
Answer:
[tex]\frac{6y+7x}{12xy}[/tex]
Step-by-step explanation:
i hope this helps :)
Find the exact length of the third side.
35
28
Answer:
44.821869662
Step-by-step explanation:
Write the sum, and then write an equivalent expression by collecting like terms and removing parentheses whenever possible.
d. The opposite of - 10t and t - 10t
Answer:
The answer is t.
Step-by-step explanation:
We need to find the sum of opposite of - 10t and t - 10t.
Opposite of -10t = 10 t
So,
10t + (t-10t)
Grouping the numbers,
(10t+(-10t)) + t
= 0 + t
= t
Hence, the answer is t.
Which of the following would be a possible solution to the system of inequalities given below?
(3,-3)
(1,-7)
(6,4)
(-5,0)
Answer:
(3, -3)
Step-by-step explanation:
A point qualifies as a solution to a system of inequalities if it is true when both of its x and y values are substituted into the both inequalities. Knowing this, let's plug in the first option, (3, -3), into both inequalities.
Let's try 6x + 3y > 3 first. Substitute 3 for x and -3 for y:
[tex]6 (3) + 3 (-3) > 3\\18 - 9 > 3\\9 > 3[/tex]
9 is bigger than 3, so (3, -3) is a solution to that inequality.
Let's try [tex]x -y \geq 4[/tex]. Do the same, substituting the same values:
[tex]3 - (-3) \geq 4\\3 + 3 \geq 4\\6\geq 4[/tex]
6 is bigger than 4, so (3, -3) is a solution to that inequality too.
Since (3, -3) is a solution to both inequalities, it must be the answer.