Answer:
[tex]\frac{x}{x+2} - \frac{4}{x-2}=1\\or, \frac{x(x-2)}{(x+2)(x-2)} -\frac{4(x+2)}{(x+2)(x-2)}=1\\or, \frac{x^2-2x}{x^2-4} -\frac{(4x+8)}{x^2-4} =1\\or, \frac{x^2-2x-(4x+8)}{x^2-4} =1\\or, \frac{x^2-2x-4x-8}{x^2-4}=1\\or, {x^2-6x-8} =x^2-4\\or, -6x-8=-4\\or, 3x+4=2\\or, 3x = -2\\or, x =\frac{-2}{3}[/tex]
Select all the expressions that are equivalent to -90x+60.
A:-10(9x-6)
B:10(-9x+6)
C:30(-3x+2)
D:-10(9x+6)
E:-30(-3x+2)
Answer:A, B and C
Step-by-step explanation:
Isabella deposited $500 into a savings account at a local bank that earned 5% interest per year. How much interest does she earn in her first year?
Answer:
$25
Step-by-step explanation:
First, converting R percent to r a decimal
r = R/100 = 5%/100 = 0.05 per year,
putting time into years for simplicity,
12 months ÷ 12 months/year = 1 years,
then, solving our equation
I = 500 × 0.05 × 1 = 25
I = $ 25.00
The simple interest accumulated
on a principal of $ 500.00
at a rate of 5% per year
for 1 years (12 months) is $ 25.00.
Which expression is equivalent to 16^2 − 36? (Explain)
A. 4(2 − 3)(2 − 3)
B. 4(2 + 3)(2 − 3)
C. (4 − 6)(4 − 6)
D. (4 + 6)(4 + 6)
Answer:
4(2x-3)(2x + 3)
Step-by-step explanation:
Here, we want to simplify the given expression
we can have;
16x^2-36
= 4(4x^2 -9)
we can use the difference of two squares
where;
a^2 - b^2 = (a-b)(a + b)
= 4(2x-3)(2x+ 3)
a 5/18
b 1/2
c 5/9
d 9/10
Answer:It should be 5/9 as its the only one that is probable,
Step-by-step explanation:
If its not 1/2 its not 9/10 so that automautically declines 2 answers leaving 5/18 and 5/9. And 5/18 is way to little for a 36 to 20 ratio, so that leaves 5/9.
Can someone solve this and show work?
Answer:
No habla engles
Step-by-step explanation:
Answer:
x = - 6, x = 4
Step-by-step explanation:
Given
x² + 2x - 24 = 0
Consider the factors of the constant term (- 24) which sum to give the coefficient of the x- term (+ 2)
The factors are + 6 and - 4 , since
6 × - 4 = - 24 and 6 - 4 = + 2 , then
x² + 2x - 24 = (x + 6)(x - 4) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 6 = 0 ⇒ x = - 6
x - 4 = 0 ⇒ x = 4
Efectúa las siguientes divisiones de monomios
Me ayudan por favor
Answer
c. 20 : 10
F . 30:15
i. 28 : 14
Step-by-step explanation:
I need help ASAP , I don’t understand this
Answer:
can't see, the pic is too blurry
PLEAASSEE PLLEEAAASSSEEE SOMEONE ANSWER THIS IS URGGEENNNTTTT!!!!!!!!!!!!!!!!!!!!! I'LL EVEN GIVE YOU BRAINLIST!!!!!!!!!!!!!!!!!
Candice has a bag with 4 green, 7 orange, and 9 blue Skittles in it. She randomly selects one Skittle to eat and then another. Is this dependent or independent probability?
A. independent
B. dependent
Answer:
Step-by-step explanation:
Which of these is a correct identity?
x + 4x = 5x
6x = 18
2x + 1 = 7
7x + 9 = x
Answer:
x + 4x = 5x
Step-by-step explanation:
An identity is a mathematical equation that is always true (here - for all possible x's).
a). x + 4x = 5x; this is true, because for any possible x
x+4x = (1 + 4)x = 5x; there's not much to add.
b). 6x=18; evaluates to
x = 3; so it only works for one x, not all possible xs.
c). 2x + 1 = 7
2x = 6
x = 3; so it only forks for one x
d). 7x + 9 = x
6x + 9 = 0; we could compute the exact x it works for from here, but suffice to say this doesn't work for x = 0.
In between these given equations, x + 4x = 5x is the correct identity here.
What is an identity?"An identity is an equality relating one mathematical expression A to another mathematical expression B, such that A and B produce the same value for all values of the variables within a certain range of validity."
Given equations are:
1. x + 4x = 5x
⇒ 5x = 5x
This equation is true for all values of 'x'.
Hence, this is a correct identity.
2. 6x = 18
⇒ x = 3
This equation is true when x = 3.
3. 2x + 1 = 7
⇒ 2x = 6
⇒ x = 3
This equation is true when x = 3.
4. 7x + 9 = x
⇒ 6x = - 9
⇒ x = - 9/6
⇒ x = - 3/2
This equation is true when x = - 3/2.
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what% of $700,000 = $525,000
Answer:
$525,000/$700,000×100%=75% is required %.
Solve
(0.54 x 0.28)+(0.46 x 0.41)
Answer:
Step-by-step explanation:
0.3398
Answer:
Answer vary :
0.3398
Step-by-step explanation:
honestly in my opinion that’s my answer.
1. multiply (0.54 times 0.28) = 0.1512
2. multiply (0.46 times 0.41) = 0.1886
3. add 0.1512 + 0.1886 = 0.3398
and that’s how I did it.
A caterpillar eats 1400\%1400%1400, percent of its birth mass in one day. The caterpillar's birth mass is mmm grams.
Which of the following expressions could represent the amount, in grams, the caterpillar eats in one day?
Choose 2 answers:
sorry, I just copied and pasted and it gave me extra numbers.
by the way, this is for khan academy
Answer:
I d k
Step-by-step explanation:
Answer:
The correct answer is B and E.
Step-by-step explanation:
I did it in Khan Academy.
2g(4g+3)+g(g-7) expand linear brackets
Answer:
7g^2 - 13g
Step-by-step explanation:
2g(4g+3)= 8g^2 + 6g
g(g-7)+ g^2 - 7g
8g^2 + 6g = g^2 - 7g
7g^2 = -13g
WHAT IS THE VALUE OF X PLEASE HURRY!!!!
Answer:
I think 48, since it's an equilateral triangle.
Step-by-step explanation:
Answer:
48
Step-by-step explanation:
cuz its a equilateral triangle
I need help with this please
Which set(s) of numbers does 81−−√ belong to? Choose all that apply Natural numbers
Natural numbers
A Whole number
B Integers
C Rational Numbers
D Irrational Numbers
Answer:
All of the above
Step-by-step explanation:
what is 2 times 5 minus 1
what is 2 times 5 minus 1?
9
i need help please!!
-2(x-4)=4 can x=2 be the solution
Answer:
Step-by-step explanation:
-2x + 8 = 4
-2x = 4 - 8
-2x = - 4
x = - 4/-2 = 2
replace x with 2 on the equation
-4-4=4
so answer is no
-8=4 not possible
What is 6.9-(-5)+4.1
Answer:
16
Step-by-step explanation:
6.9+5+4.1
11+5
16
pls thanks
Answer:
16
Step-by-step explanation:
Recall that the product of a negative number and another negative number is a positive number. Thus, -(-5) = +5, and the original expression becomes
6.9 + 5 + 4.1.
Combining the mixed numbers 6.9 and 4.1, we get 11.
Combining 11 and 5 results in 16.
Write the following expression in expanded form 3(4y+x-8)
For example: 5(x+2) in expanded form would be 5x+5*2.
Answer:
12y+3x-24
Step-by-step explanation:
15 1/3 - 5 7/9 = 10 1/3 - 7/9
Answer:
true
Step-by-step explanation:
can yall help me 17 = x - 28?
Answer:
Step-by-step explanation:
For an algebra question like this you are trying to solve for the x.
The way you do that is to get x by itself.
So with
17 = x - 28
The step you want to do is to add 28 to both sides.
17 + 28 = x - 28 + 28
This makes makes the equation
17 + 28 = x
45 = x
Answer:
35
Step-by-step explanation:
Let's solve your equation step-by-step.
17=x−18
Step 1: Flip the equation.
x−18=17
Step 2: Add 18 to both sides.
x−18+18=17+18
1. Which situation could be represented by y = 4x + 7?
a student started with $4 and saved $7 per week.
A package costs $7 plus $4 per pound to ship.
A skateboard weighs 4 pounds plus 7 ounces.
A recipe calls for 7 cups of flour and 4 cups of sugar.
2. What is the equation of the line through (5,8) and (2,2)?
y = 2x + 2
y = 2x - 2
y = 5x - 8
y =8x - 5
3. The slope of a line is -1/3 and the y-intercept is 3. What is the equation of this line?
y = 1/3 + 3
y = -1/3 + 3
y = 3x - 3
y = 3x - 1/3
4. What is the equation of the line that has a slope of 2 and goes through (3,7)?
y = 2x + 3
y = 1/2x + 7
y = 2x + 1
y = -2x + 1
5. Sammy is saving up to buy a PS5 plus. He has $40 and will save $60 per week. Which equation represents this situation?
1 point
y = 40x + 60
y + 60x + 40
y = 60x - 40
y = 40x - 60
6. Sammy is saving up to buy a PS5 plus. He has $40 and will save $40 per week. How long will it take Sammy to save the money if the PS5 plus costs $600?
11 weeks
12 weeks
13 weeks
14 weeks
7. Steph made $360 working 30 hours last week. Sam made $195 working 15 hours last week. Who made more per hour?
Steph
Sam
Answer:
B, A package costs $7 plus $4 per pound to ship. B, y = 2x - 2 B, y = -1/3x + 3 C, y = 2x + 1 B, y = 60x + 40 D, 14 weeks (600 = 40 + 40x)Sam, ($13hr)i hope this helps, good luck :)
82- 2to the third power.5 please help!
Answer:
240
Step-by-step explanation:
82-2= 80 to the third power so just multiply 80 x 3 and you have your answer.
Answer:
512000 (square root of it is 712.5)
Step-by-step explanation:
82 -2 = 80
80^3
= 80*80*80
= 80^3
= 512000 (square root of it is 712.5)
Let me know if this was helpful!!
Resuelve
Ritmo de cambio. Cada uno de los siguientes datos es la pendiente de una recta que representa los ingresos diarios y en términos del tiempo X en días. Utilizar la pendiente para interpretar
la variación en los ingresos correspondiente a un incremento de
un día
a). m =800
b). m =250
c). m = 0
Answer:
800m
Step-by-step explanation:
porque incremento de un día
K is between P and Q. Suppose PQ- 10x - 16, PK - 6x + 8, and KQ-8. What is PQ?
Answer:
PQ = 64
Step-by-step explanation:
PQ = PK + KQ
10x - 16 = 6x + 8 + 8
10x - 16 = 6x + 16
4x = 32
x = 8
PQ = 10(8) - 16
= 80 - 16
= 64
A rafter makes an angle of 28° with the horizontal. If the rafter is 15 feet long, what is the height at the rafter's peak? Draw a diagram.
The height is 7.04 feet at the rafter's peak that makes an angle of 28° and 15 feet long.
What is angle?An angle is the formed when two straight lines meet at one point, it is denoted by θ.
Given that,
Length of rafter = 15 feet,
Angle made by rafter with the horizontal = 28°
Apply sin formula to determine the length x of the rafter,
sinθ = x / 15
sin28° = x / 15
0.469 = x / 15
x = 7.04
The height of the rafter is 7.04.
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Multiple Choice The Astrodome-in Houston, Texas, is circular and has a diameter of 710 feet. What is the approximate circumference of the Astrodom
Answer:
Step-by-step explanation:
[tex]C=\pi d\\ \\ C=710\pi ft\\ \\ C\approx 2230.5 ft[/tex]
Answer:
2230.53
Step-by-step explanation:
WILL GIVE BRAINLIEST PLEASE ANSWER FAST Solve for each indicated angle measure or
variable in the figure.
Answer:
All angles in a triangle sum up to 180 degrees. The value of x is 45 degrees.
Step-by-step explanation: