Answers
Related Questions
Multiply.
(1.6)⋅(−4.2)
A. −67.2
B. −6.72
C. 6.72
D. I don't know.
Answers
frist you multiply 1.6 with -4.2
need helpppp i have no idea what to do
Answers
Answer:
Line 1 and Line 2: Perpendicular
Line 1 and Line 3: Neither
Line 2 and Line 3: Neither
Step-by-step explanation:
We will write all lines in slope intercept form i.e [tex]y=mx+b[/tex]
where m is slope.
And check
a) If two lines are parallel they have same slope [tex]m_1=m_2[/tex]
b) If two lines are perpendicular they have opposite reciprocal slopes i.e [tex]m_1=-\frac{1}{m_2}[/tex]
Equation for Line 1: [tex]y=-\frac{4}{3}x-4[/tex]
Already in slope-intercept form
Slope for Line 1 m is: [tex]\mathbf{m_1=-\frac{4}{3}}[/tex]
Equation for Line 2: [tex]6x-8y=-6[/tex]
Converting into slope-intercept form:
[tex]6x-8y=-6\\-8y=-6x-6\\y=\frac{-6x-6}{-8}\\y=\frac{-6x}{-8}+\frac{-6}{-8} \\y=\frac{3x}{4}+\frac{3}{4}[/tex]
Slope for Line 2 m is: [tex]\mathbf{m_2=\frac{3}{4}}[/tex]
Equation for Line 3: [tex]-4y=3x+7[/tex]
Converting into slope-intercept form:
[tex]-4y=3x+7\\y=-\frac{3}{4} -\frac{7}{4}[/tex]
Slope for Line 3 m is: [tex]\mathbf{m_3=-\frac{3}{4}}[/tex]
Now, finding answers
Line 1 and Line 2
Checking their slopes: [tex]\mathbf{m_1=-\frac{4}{3}}[/tex], [tex]\mathbf{m_2=\frac{3}{4}}[/tex]
Both lines are perpendicular because they have opposite reciprocal slopes
Line 1 and Line 3
Checking their slopes: [tex]\mathbf{m_1=-\frac{4}{3}}[/tex], [tex]\mathbf{m_3=-\frac{3}{4}}[/tex]
Slopes are neither same, nor opposite reciprocal, so they are neither
Line 2 and Line 3
Checking their slopes: [tex]\mathbf{m_2=\frac{3}{4}}[/tex], [tex]\mathbf{m_3=-\frac{3}{4}}[/tex]
Slopes are neither same, nor opposite reciprocal, so they are neither
The answers are:
Line 1 and Line 2: Perpendicular
Line 1 and Line 3: Neither
Line 2 and Line 3: Neither
After a discount of 40%, the sale price of a ridepass at a fun park is $30 what was the orginal price
Answers
The original price was $75
determine the slope of the lines.
line 1: y=9
line 2: x=-3
are the slopes parallel, perpendicular, or neither?
Answers
7
Find the slope of a line that passes through the points (-5,3) and (-3, 8)
Answers
Answer:
-2/5
Step-by-step explanation:
hope this helps
10:Mohan lent altogether 6,600 to Ram and Shyam for 2 years. Ram agreed to
pay simple interest at 15 % p.a. and Shyam agreed to pay compound interest
at the same rate. If Ram paid Rs 112.50 more than Shyam as the interest, find
how much did he lend to each of them?
Answers
Answer:
Mohan lent 3600 to Ram and 3000 to Shyam.
Step-by-step explanation:
Given that Mohan lent altogether 6,600 to Ram and Shyam for 2 years.
Let Mohan lent x to Ram and y to Shyam
x+y=6600
Or, x=6600-y ...(i)
As Ram pays simple interest at 15 %=0.15 p.a, so, the interest paid by Ram in 2 years:
[tex]I=x\times 0.15 \times 2 \\\\\Rightarrow I=0.3x \\\\[/tex]
[tex]\Rightarrow I=0.3(6600-y) \\\\[/tex] [by using (i)]
[tex]\Rightarrow I=1980-0.3y \cdots(ii)[/tex]
As Shyam pays compound interest at 15 %=0.15 p.a,
so, the interest paid by Shyam in 2 years, C.I.= Final amount - Initial principal amount
[tex]C.I. = y(1+0.15)^2-y \\\\\Rightarrow C.I. = y(1.15^2-1) \\\\\Rightarrow C.I. = y(1.3225-1) \\\\\Rightarrow C.I. = 0.3225y \cdots(iii)[/tex]
As Ram paid Rs 112.50 more than Shyam as the interest, so by using equations (ii) and (iii),
[tex](1980-0.3y)-0.3225y=112.5 \\\\\Rightarrow 1980-0.3y-0.3225y=112.5 \\\\\Rightarrow 0.6225y=1980-112.5 \\\\\Rightarrow y = 1867.5/0.6225=3000[/tex]
From equations (i),
[tex]x=6600-3000=3600[/tex]
Hence, Mohan lent 3600 to Ram and 3000 to Shyam.
First answer gets brainiest
Answers
Answer:
52 degrees
Step-by-step explanation:
the sides are equal
Answer:
52 degrees
Step-by-step explanation:
since each side have one line, they are both equal, which means that x is also 52 degrees
hope this helps
take care
Which line show the first error in the solution?
3(x−2)=18 (1)
3x−6=18 (2)
3x−6+6=18+6 (3)
3x=24 (4)
x=21 (5)
Line 2
Line 4
Line 5
Line 3
Answers
Answer:
Line 3
Step-by-step explanation:
Proper solution step-by-step:
1. 3(x-2)=18
2. 3x - 6 = 18
3. 3x = 18 + 6
4. 3x = 24
5. x = 8
Please help
I will mark brainlest and theres alot of points :)
Answers
Answer:
answer is a
Step-by-step explanation:
5(2)=10+2(7)=24
If v2 = u2 + 2as, evaluate a when v = 5,
u = 2 and s = 7.
Answers
Answer:
a = 3/2
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Step-by-step explanation:
Step 1: Define
v² = u² + 2as
v = 5
u = 2
s = 7
Step 2: Evaluate
Subtract u² on both sides: v² - u² = 2asDivide 2s on both sides: (v² - u²)/(2s) = aRewrite: a = (v² - u²)/(2s)Substitute: a = (5² - 2²)/(2 · 7)Exponents: a = (25 - 4)/(2 · 7)Multiply: a = (25 - 4)/14Subtract: a = 21/14Simplify: a = 3/2Solve the following and check for extraneous solutions
√4x + 8= x+ 3
Answers
Answer:
X=-5
Step-by-step explanation:
√4x+8=x+3
Simplifies to:
2x+8=x+3
Let's solve your equation step-by-step.
2x+8=x+3
Step 1: Subtract x from both sides.
2x+8−x=x+3−x
x+8=3
Step 2: Subtract 8 from both sides.
x+8−8=3−8
x=−5
John and his best friend found some money. They split the money evenly, each getting $14. How much money did they find?
Answers
Answer:
$28
Step-by-step explanation:
John and his best friend each got $14, so in total there are $14+$14=$28.
Answer:
$28
Step-by-step explanation:
If they split the money evenly then both of them got half.
So, multiply 14 by 2 to find the answer:
(14)(2) = 28
John and his best friend found a total of $28.
I hope this helps!!
- Kay :)
Factor the following polynomial.
98x3 – 18x
Answers
Answer:
2x(7x - 3)(7x +3)
Step-by-step explanation:
Find common factors between the 2 numbers:
98x^3 - 18x
2x(49x^2 - 9)
now find what numbers multiplied together is 49, and find what numbers added together equals 0 and the product is 3, 7 times 7 is 49 and 3(-3) = 9 while 3 - 3 = 0 so:
2x(7x - 3)(7x +3)
Steps:
First, find the GCF
GCF= 2x
Next, factor it out
2x(49x^2 - 9)
This is the furthest you can factor it
What is the value of y?
A. 10
B. 110
C. 85
D. 55
Answers
Answer:
D. 55°
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Geometry
All angles in a triangle add up to 180°Step-by-step explanation:
Step 1: Set Up Equation
40° + (y + 30)° + y° = 180°
Step 2: Solve for y
Combine like terms: 2y° + 70° = 180°Isolate y term: 2y° = 110°Isolate y: y° = 55°Explanation: 3 angles of a triangle must equal 180 so use the formula 180=(angle 1) +(angle 2) +(angle 3)
180=(40)+(y)+(y+30)
Test every answer until you get 180=180
180=40+55+(55+30)
180=40+55+85
180=180
So the answer is 55
A Cuban restaurant
donates 225 meals each hour. How
many meals does the restaurant
donate in 12 hours?
Answers
Explanation:
The PTO is hosting a donut and coffee day at the shcool. Each box of donuts and costs $9.00 and each cup of
coffee cost $0.50. The PTO spent $63 on the donuts and on the coffee.
What are the unknown quantities in this problem? Select all that apply.
The school where the donut and coffee day will take place.
The cost of each box of donuts.
The cost of each cup of coffee.
The number of boxes of donuts the PTO bought.
The number of cups of coffee the PTO bought.
Answers
Answer:
The school where the donut and coffee day will take place.
The number of boxes of donuts the PTO bought.
The number of cups of coffee the PTO bought.
420 presents in 15 hours at this rate how many presents does Santa deliver in 5 hours
Answers
Answer:
140 Presenrs
Step-by-step explanation:
If Santa delivers 420 presents in 15 hours and to get to 5 hours you need to divide 15 to 3, so what you do to one number you must do to the other, so therefore divide 420 by 3 to get 140 presents in 5 hours.
Help me please!! I cannot do math! :D
Answers
Answer:
Dude PDF is not a question
Step-by-step explanation:
3.
=45x-27
=9(5x-3)
4.
=6x+75x²
=3x(2+9x)
17.
22=16+x+3+14+57
5
110=90+x
110-90=x
x=20
Which relation is a function?
{(1, −1), (−2, 2), (−1, 2), (1, −2)}
{(1, 2), (2, 3), (3, 2), (2, 1)}
{(1, 4), (2, 3), (3, 2), (4, 1)}
{(4, 2), (3, 3), (2, 4), (3, 2)}
Answers
Answer:
The answer to this question is B
Step-by-step explanation:
just believe
4r + 5y = 10
- 1 - 8 = 3y
Answers
Answer:
y = -3, r = 25/4
Step-by-step explanation:
4r+5y = 10
-1 - 8 = 3y <--- This can be simplified to:
-9 = 3y
-3 = y
Now we plug -3 into y in the first equation
4r + 5y = 10
4r + 5(-3) = 10
4r - 15 = 10
4r = 25
r = 25/4
Find the m<2 if m<1=127 awnser choice a.106 b.127 c. 90 d.53
Answers
so the answer would be D. 53
3(x + 5)2 + 6 vertex
Answers
Answer:
The equation does not match the form of any conic section.
Not a Conic Section
Step-by-step explanation:
PLEASE HELP ME WITH THESE !!!
Answers
Answer:
T = 1 I = 5 R = 40
Step-by-step explanation:
Use cross multiply method or use scientific calculator to find it by shift solve method
Answer:
T= 1
I= 5
R= 40
Step-by-step explanation:
T: 28/7 = 4 so you should divide 7 by 7 to get t
I: 12/4 is 3 so you should divide 20 by 4 to get I
R: 36/9 is 4 so multiply 10 times 4 to get R
The Ratio of number x and four added by two
Answers
Answer:
The ratio of a number x and four added to two:
= 4x + 2 = 0
= 4x = -2
= 4x/4 = -2/4
= x = -2/4
= x = -1/2
Step-by-step explanation:
Hope this helped!
Pls help I’m stuck on this question and I can’t figure it out! Will give brainliest!
Answers
Answer:
A, C, and D
Step-by-step explanation:
Parent function of y = x will be all linear equations that have the x variable with the exponent equal to one.
Answer:
A, C, and D.
Step-by-step explanation:
the other answer is not correct because i pressed on this to help you because my teacher actally just tought me that and so she just tought us (my class)
about this and she used this question for an example and she used that other answer and asked which ones where correct and i said A, C, And D.
and guess what? i got it correct! so trust me, you gotta do A, C, and D. i hope that helps you and please mark me brainlist have a nice day.
find the equation of a circle with a center at (-1, 5) and a point on the circle is (4, 4). ( x 1) 2 ( y - 5) 2
Answers
The equation of a circle is x² + y²+ 2x - 10y = 0 with a center at (-1, 5).
What is the equation of a circle?The equation of a circle with center (h,k) and radius r is :
r² = (x−h)² + (y−k)²
Given that a circle with a center at (-1, 5) and a point on the circle is (4, 4).
Since the circle passes through points (4, 4),
So the radius (r) of the circle is the distance between points (-1, 5) and (4, 4).
⇒ r² = (-1−4)² + (5−4)² = 25 + 1
⇒ r = √26
The center of the circle is given as (h,k) = (-1, 5)
So the equation of the circle is
⇒ r² = (x − h)² + (y − k)²
Substitute the values of r, h, and k in the above equation,
⇒ 26 = (x − (-1))² + (y −5)²
⇒ 26 = (x + 1)² + (y −5)²
⇒ 26 = x² + 2x +1 + y² - 10y + 25
⇒ x² + y²+ 2x - 10y = 0
Hence, the equation of a circle is x² + y²+ 2x - 10y = 0 with a center at (-1, 5).
Learn more about the equation of a circle here:
https://brainly.com/question/1554214
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Which graph shows a non-proportional linear relationship between x and y?
Answers
Add your CORRECT Please
Answers
Answer:
IQR= (16)−(10)=6
Thus, option 'C' is true.
Step-by-step explanation:
Given the data
8, 9, 9, 10, 12, 12, 13, 14, 15, 15, 15, 16, 18, 19, 20
The interquartile range is equal to the difference between the 75th and the 25th percentiles
The 25th percentile is 10
The 75th percentile is 16
Finally,
IQR= (16)−(10)=6
Thus, option 'C' is true.
Vaughn paints his porch floor and also the porch floors of 9 neighbors. Each floor is a rectangle that is 8.2 feet long and 6.7 feet wide. What is the exact total area of all the porch floors that Vaughn paints? Enter your answer in the box.
(My little sister needs help but I can't help her right now)
Answers
Answer:
494.46 feet²
Step-by-step explanation:
So the area of one porch floor is
=l×w
=8.2×6.7 feet²
=54.94 feet²
So he paints 9 porch floors
So the exact total area of all the porch floors that Vaughn paints is
=54.94×9 feet²
=494.46 feet²
Emmet walks 0.4 miles on each trip to the park. How far will Emmet walk if he makes 4 trips to the park?
Miles
Answers
Emmet will walk 1. 6 miles if he makes 4 trips to the park
How to determine the valueFrom the information given, we have that;
Emmy walks 0. 4 miles per tripHe wants to walk 4 tripsIt is important to note that proportion is the mathematical comparison of two numbers or elements
If 0. 4 miles is equivalent to 1 trip
Then x miles is equivalent to 4 trips
cross multiply
x = 0 . 4 × 4
Multiply through
x = 1. 6 miles
Thus, Emmet will walk 1. 6 miles if he makes 4 trips to the park
Learn more about proportion here:
https://brainly.com/question/18437927
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