Answer:
10
Step-by-step explanation:
you can cross multiply.
[tex]\frac{12}{15}=\frac{8}{k}[/tex]
after you cross multiply:
12k=120
k=10
I have to do step by step why the answer of (5x - 1) (5x - 1) is 25x^2 - 10x + 1.
How do i do it?
(5x - 1) (5x - 1)
Ans: 25x^2 - 10x + 1
Answer:
(5x - 1)(5x - 1) = 25x² - 10x + 1
Step-by-step explanation:
Let us solve the question step by step
We need to find the product of (5x - 1) and (5x - 1)
The first step multiply 1st term in 1st bracket by 1st term in 2nd bracket (5x by 5x)∵ 5 × 5 = 25
∵ x × x = [tex]x^{1+1}[/tex] ⇒ multiply same base means add their powers
∴ x × x = x²
∴ 5x × 5x = 25x²
The second step multiply 1st term in 1st bracket by 2nd term in 2nd bracket (5x by -1)∵ 5x × -1 = (5 × -1)x
∴ 5x × -1 = -5x
The third step multiply 2nd term in 1st bracket by 1st term in 2nd bracket (-1 by 5x)∵ -1 × 5x = (-1 × 5)x
∴ -1 × 5x = -5x
The fourth step multiply 2nd term in 2nd bracket by 2nd term in 2nd bracket (-1 by -1)∵ -1 × -1 ⇒ (-)(-) = (+)
∴ -1 × -1 = 1
The fifth step add them up∵ (5x - 1)(5x - 1) = 25x² + -5x + -5x + 1
∵ -5x and -5x are like term, then add their coefficients
∵ -5x + -5x = (-5 + -5)x
∴ -5x + -5x = -10x
∴ (5x - 1)(5x - 1) = 25x² + -10x + 1
∵ (+)(-) = (-)
∴ (5x - 1)(5x - 1) = 25x² - 10x + 1
I need help solving...
Answer:
x = 4
Step-by-step explanation:
Because we know both figures have the same perimeter, we can set them equal to each other.
3x + 4 + 5x + 1 + 2x + 5 = x + 13 + x + 13 + 2x + 2x
10x + 10 = 6x + 26 (Added like terms.)
4x + 10 = 26 (Subtracted 6x on both sides.)
4x = 16 (Subtracted 10 on both sides.)
x = 4 (Divided 4 on both sides.)
Which one of these are not equivalent to each other and which ones are:
3 (x+2), 3x+6, 3 (2x)
Answer:
3(x+2) and 3x+6 are equivalent.
3(2x) is not.
Step-by-step explanation:
Simplify the expressions first.
1. 3(x+2) becomes 3x+6
2. 3x + 6
3. 3(2x) becomes 6x
The first and second are equivalent to each other.
The third one is not equivalent.
Hope this helped :)
Convert 299 fractions, 1/2, 1/3, 1/4, ……, 1/300 to decimals. How many finite fractions in those fractions?
9514 1404 393
Answer:
20
Step-by-step explanation:
An equivalent decimal fraction is non-repeating if and only if the fraction denominator has a prime factorization consisting only of powers of 2 and 5.
Powers of 2 less than 300 are ...
2, 4, 8, 16, 32, 64, 128, 256
Powers of 5 less than 300 are ...
5, 25, 125
A fraction will have a finite decimal representation if its denominator is one of these numbers, or some product of these numbers.
Products would include ...
10, 50, 250, 20, 100, 40, 200, 80, 160
The count of all of the listed numbers is ...
8 powers of 2 + 3 powers of 5 + 9 powers of 2 and 5 = 20 listed numbers
There are 20 finite decimal fractions among the fractions 1/2 ... 1/300.
Write an equation of a line with slope 1/2 and crossing point (2,-3)
Answer:
y= 1/2x +4
Step-by-step explanation:
plot a point on a graph at (2, -3) then insert ur slope (rise over run) and in this case that’s 1 up 2 to the right
Divide.
Write your answer in simplest form.
-3/2 ÷ 4/7
Answer:
-21/8
Step-by-step explanation:
what’s the answerrrrrrr !!?( hurry respond fast )
Answer:
B and C
Explanation:
Only plant cells have a cell wall and chloroplast
Alisha is making an 18-ounce coffee beverage that is made from brewed coffee and milk. The number of ounces of brewed coffee is 5 times greater than the number of ounces of milk. How many ounces of coffee and how many ounces of milk does Alisha need?
Solve the formula −4x+y=−6 for y.
Answer:
y=4x-6
Step-by-step explanation:
The formula for y is -6+4x from the equation −4x+y=−6.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
The given equation is −4x+y=−6
Minus four times of x plus y equal to minus six.
We need to solve the formula for y.
In the given equation x and y are the variables.
Isolate the variable y by add 4x on both sides of the equation
y=-6+4x
Hence, the formula for y is -6+4x from the equation −4x+y=−6.
To learn more on Equation:
https://brainly.com/question/10413253
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3(y + 2) + y = 4(y – 1) +9
Is there a solution
Answer:
There are no solutions Hope this helped<3 :)
Step-by-step explanation:
Let's solve your equation step-by-step.
3(y+2)+y=4(y−1)+9
Step 1: Simplify both sides of the equation.
3(y+2)+y=4(y−1)+9
(3)(y)+(3)(2)+y=(4)(y)+(4)(−1)+9(Distribute)
3y+6+y=4y+−4+9
(3y+y)+(6)=(4y)+(−4+9)(Combine Like Terms)
4y+6=4y+5
4y+6=4y+5
Step 2: Subtract 4y from both sides.
4y+6−4y=4y+5−4y
6=5
Step 3: Subtract 6 from both sides.
6−6=5−6
0=−1
Answer:
There is no solution
Step-by-step explanation:
First step:
3(y + 2) + y = 4(y – 1) +9
Second step, distributing:
3y + 6 +y = 4y -4 + 9
Third step, combining like terms:
4y + 6 = 4y + 5
Fourth step:
determine if it has a solution which it does not. How do i know?
When you continue the problem 4y + 6 = 4y + 5 you need to subtract 6 on both sides which gets you -1. then you subtract 4y on both and you get
0=1. Therefore this is definitely no solution
Ill MARK BRAINLIST PLS HELP !!!
Answer:
This question is pretty simple, half the values given are just to confuse you
notice that we are given a function which gives us the height of the rock at any given time, so if we use that function for t=2 seconds, we will get the height of the rock after 2 seconds
We are given the function:
h(t) = -16t² - 50t + 220
replacing t with 2
h(2) = -16(2)² - 50(2) + 220
h(2) = -16(4) - 100 + 220
h(2) = -64 - 100 + 220
h(2) = 56 feet
Therefore, the height of the rock 2 seconds after throwing is 56 m
A large negative number is added to a small positive number. Which of the following statements is correct about the
sum?
the sum will be negative
the sign of the sum cannot be determined
the num could be the positive or negative
the sum will be positive
Answer:
the sum will be negative
The sum will always be negative because the positive number would have to be larger than the negative for the outcome to be positive.
8/9 + 4/9 simplify answer and write as a mixed number
Answer: 1 1/3
Step-by-step explanation: Divide using long division. The whole number portion will be the number of times the denominator of the original fraction divides evenly into the numerator of the original fraction, and the fraction portion of the mixed number will be the remainder of the original fraction division over the denominator of the original fraction.
Hope this Helps :3
Step-by-step explanation:
Hey there!
Given;
[tex] = \frac{8}{9} + \frac{4}{9} [/tex]
Adding them.
[tex] = \frac{8 + 4}{9} [/tex]
[tex] = \frac{4}{3} [/tex]
Change into mixed number.
[tex] = 1 \frac{1}{3} [/tex]
Hope it helps....
Translate the sentence into an equation.
Eight times the sum of a number and 9 equals 5.
Use the variable x for the unknown number.
Answer:
8(x +9) = 5
Step-by-step explanation:
The words "the sum of a number and 9" mean "x+9" when x is used to represent the number. The "8 times the sum" is 8(x+9). When that "equals 5", then we have the equation ...
8(x +9) = 5
A number is divisible by 10 if and only if it is divisible by 2
true or false? plz helppp
Answer:
false
Step-by-step explanation:
3x + x- 2x + 8 = 3x + x
Answer:
x=4
Step-by-step explanation:
3x+x - 2x + 8= 3x + x
4x- 2x +8 = 4x
2x + 8= 4x
8= 2x
x=4
Find perimeter of the figure :)
Answer:
39 feet.
Perimeter is the distance around a shape. To solve for it, we must add all the values together.
[tex]3 + 8 + 7 + 11 + 10 = 39[/tex]
If you need me to explain more, let me know.
. $19 purse; 25% discount
Answer:
$14.25
Step-by-step explanation:
First write 25% as a decimal by dividing by 100.
[tex]\frac{25}{100}[/tex] = .25
Now multiply the cost of the purse by the discount.
$19 x .25 = $4.75
That is the discount, now subtract the discount from the original price of the purse.
$19 - $4.75 = $14.25
1.3(x-13) Bs.
(1 Point)
Enter your answer
You multiply 3 times x and you get 3x, then multiply 3 times negative 13 and you get -39.
3x-39
I have 1 bag of marbles. I put in 3 extra marbles. There are now 9 marbles in the bag. How many were in the bag to begin with?
Please give me the formula and all too
Answer:
6 Marbles
Step-by-step explanation:
9-3=6
The bag of marbles had 6 marbles in it originally.
Answer:
6
x+3=9
Step-by-step explanation:
PLZ HELP FAST?!??!!!!!!?!?!!?!!!
Answer:
i think you do 175 x 1. 175 x 2. 175 x 3, and 175 x 4
Step-by-step explanation:
PLZ HELP express these fraction as a decimal, ratio, percentage,and I'm money
3/5
4/9
11/12
Answer:
3/5=0.6
_
4/9=0.4
_
11/12=0.916
What is 1 2/3 - 2 1/3
Answer:
- 2/3
Step-by-step explanation:
13 candy bars weigh 390 what is the weight of 35 candy bars
Answer:
1050 :)
Step-by-step explanation:
Explain what Similar means?
Answer:
It means alike but not identical. Showing resemblance.
Step-by-step explanation:
Hope this helped and have a great day!
(Please brainliest)
A nursery has $60,000 of inventory in dogwood trees and red maple trees. The profit on a dogwood tree is 29% and the profit on a red maple tree is 17%. The profit for the entire stock is 20%. How much was invested in each type of tree?
Answer:
27g
Step-by-step explanation:
Ghjc
The invested amount dogwood tree is $15000 and on maple tree is $45000 as per linear equation.
What is a linear equation?"A linear equation is an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation. When this equation is graphed, it always results in a straight line."
Given, total invested amount is $60000.
Let, invested amount for dogwood trees is $x.
Therefore, invested amount for maple trees is ($60000 - x).
Now, the profit on a dogwood tree is 29% = 0.29.
The profit on a red maple tree is 17% = 0.17.
Again, the profit for the entire stock is 20%. = 0.20.
Therefore,
(x + x × 0.29) + [(60000 - x) + (60000 - x) × 0.17 = 60000 + 60000 × 0.20
⇒ 1.29x + 60000 - x + 10200 - 0.17x = 72000
⇒ 0.12x = 72000 - 60000 - 10200
⇒ 0.12 x = 1800
⇒ x = 15000
Therefore, invested amount on dogwood tree is $15000.
Similarly, invested amount on maple tree is $(60000 - 15000) = $ 45000.
Learn more about a linear equation here: https://brainly.com/question/19567429
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Suppose ΔDEF is the image of a translation of ΔABC. If D is at (−6, −2), what translation rule maps ΔABC to ΔDEF? * Captionless Image T⟨9, 2⟩(ΔABC) = ΔDEF T⟨9, –2⟩(ΔABC) = ΔDEF T⟨–9, –2⟩(ΔABC) = ΔDEF T⟨−9, 2⟩(ΔABC) = ΔDEF
Answer:
T⟨–9, –2⟩(ΔABC) = ΔDEF
Step-by-step explanation:
The question ask what the translation from A is to D(-6,-2). When you solve, you will get (-9,-2) as your answer.
8x -10= 3(6-2x). X=2
Answer:
x=2
Step-by-step explanation:
8x-10=18-6x
or,8x+6x=18+10
or,14x=28
x=28/14
x=2
How do you write and compete numbers in scientific notation
What is the equation of a line of slope of 4 and pass through (-1,-6)
Answer:
The answer is
[tex] \huge y = 4x - 2[/tex]
Step-by-step explanation:
To find an equation of a line given the slope and a point we use the formula
[tex]y - y_1 = m(x - x_1)[/tex]
From the question the point is (-1,-6) and slope 4
The equation of the line is
[tex]y + 6 = 4(x + 1) \\ y + 6 = 4x + 4 \\ y = 4x + 4 - 6[/tex]
We have the final answer as
[tex]y = 4x - 2[/tex]
Hope this helps you
