Answer:
Step-by-step explanation
please help me for this question
Answer:
Mid-point: [tex](0,-5)[/tex]
Equation: [tex]y=\frac{7}{3}x-5[/tex]
Step-by-step explanation:
To find the mid-point of AB, simply add up their x and y coordinates and divide by 2 respectively to find their middle point.
[tex](\frac{{x__A}+{x__B}}{2},\frac{{y__A}+{y__B}}{2})[/tex]
[tex](\frac{{-7}+{7}}{2},\frac{{-2}+{(-8)}}{2})[/tex]
[tex](0,-5)[/tex]
To find the perpendicular slope that passes through the mid-point, we need to know the slope between AB first.
Slope of AB: [tex]\frac{{y__2}-{y__1}}{{x__2}-{x__1}}[/tex] = [tex]\frac{{-8}-{-2)}}{{7}-{(-7)}}[/tex] = [tex]\frac{-6}{14}[/tex] = [tex]\frac{-3}{7}[/tex]
Multiplying slopes that are perpendicular with each other always results in -1.
[tex]\frac{-3}{7}*m = -1[/tex]
[tex]m=\frac{7}{3}[/tex]
By the point slope form:
[tex]({y}-{y__1})=m({x}-{x__1})[/tex]
Plug in the coordinates of the mid-point:
[tex]({y}-{(-5)})=\frac{7}{3} ({x}-{0})[/tex]
Equation: [tex]y=\frac{7}{3}x-5[/tex]
The Perricone family had a water meter reading of 3,970 Tgal last month and 3,973 Tgal this month.
Their water supplier charges a rate of $23.75 per Tgal. What is the estimated annual water cost for
the Perricone family?
The estimated annual water cost for the Perricone family= $1,132,305
Calculation of Estimated water costThe family meter reading for last month = 3,970 Tgal
The family meter reading for next month= 3,973 Tgal
The rate charged by the supplier = $23.75 per Tgal.
There is increase in the meter reading per month by 3Tgal.
To calculate for the monthly cost = 23.75 × 3,970
= $94287.5
Therefore annually= $94287.5 × 12 = $1,131,450
The cost for each monthly increase = 23.75 × 3= $71.25
Therefore annual monthly increase= 71.25× 12= $855
Therefore, the estimated annual water cost for the Perricone family= $1,131,450 + $855
= $1,132,305
Learn more about meter reading here:
https://brainly.com/question/25092270
.pleaseeeee helppppppp
Answer:
[tex]4.8038[/tex] or just [tex]4[/tex] quarts.
Hope this helps!
MATH QUESTION SCREEN SHOT DOWN BELOW BRAINLIEST!
Answer:
its b bc im smart
Step-by-step explanation:
Answer:
The actual correct answer to this is A
Step-by-step explanation:
Direction: Opens Up
Vertex:
(1,−2)
Focus:
(1,−7/4)
Axis of Symmetry:
x=1
Directrix:
y=−9/4
Hope this helps mark brainliest please :)
If your grandmother gave you her wedding ring, it was appraised at $1,200, and the annual inflation rate was 6 percent, how many years would it be before it was worth $2,400?
Answer: about 12 years
Step-by-step explanation: If your grandmother gave you her wedding ring, which was appraised at $1,200 and it had an annual inflation rate of 6 percent; it would take about 12 years for the ring's worth to become $2,400.
Answer:
about 11-12 years before it was worth $2400
PLEASE HELP! Vertical angles 5 & 6 (3x-15)° and (2x+7)°
Answer:
Angle 5 = 51 degrees
Angle 6 = 129 degrees
Step-by-step explanation:
When dealing with parallel lines like this, the picture attached shows all the angles that are equal to each other. Angle 6 and (3x-15) will sum to 180 degrees. Angle 5 is equal to 3x-15. (3x-15) will be equal to (2x+7)
The first step to solving this problem after the angle relationships are determined is to solve for x:
3x-15=2x+7
3x-2x=7+15
x=22
The second step is to determine angle 5:
angle 5 = 3x-15
angle 5 = 3(22)-15
angle 5 = 66-15
angle 5 = 51 degrees
The third step is to determine angle 6:
angle 6 = 180 - (3x-15)
angle 6 = 180 - 3x + 15
angle 6 = 195 - 3x
angle 6 = 195 - 3(22)
angle 6 = 195 - 66
angle 6 = 129 degrees
The final step is to check the angles. Angle 6 and 3x-15 should add to 180; 180 - angle 5 should be equal to angle 6.
129 + 3x - 15 =? 180
129 + 3(22) - 15 =? 180
129 + 66 - 15 =? 180
180 = 180
180 - 51 =? 129
180 - 51 =? 129
180 - 51 =? 129
129 = 129
20 POINTS HURRY!
The net of a triangular prism and its dimensions are shown in the diagram
What is the lateral surface area of the triangular prism in square centimeters?
A. 264 cm
B. 240 cm
C. 225 cm
D. not here
Answer:
D. not here
Step-by-step explanation:
because It's equal to 120cm
Mark wants to buy a new lap top computer. He finds one that was priced
at $1200.00. It is on sale for 25% off. What is the sale price of the lap
top?
Answer:
sale price: $900
Explanation:
original price will be always of 100%
sale price: 100% - 25% = 75%
so solve:
100% ↔ $1200
1% ↔ $1200/100
1% ↔ $12
75% ↔ (12 * 75) = $900
I don’t understand this question and I need help
Answer:
[tex]FIRST\ BLANK:\ 22[/tex]
[tex]SECOND\ BLANK:\ 20[/tex]
[tex]THIRD\ BLANK:\ 18[/tex]
I hope this helps you
:)
Answer:
1. 22
2. 20
3. 18
Step-by-step explanation:
1. 2(13-p) = 2(13-2) = 26-4 = 22
2. 2(13-p) = 2(13-3) = 26-6 = 20
3. 2(13-p) = 2(13-4) = 26-8 = 18
I WILL GIVE BRAINILESTTTTT
Answer: C
Step-by-step explanation:
what is the most important thing in life
Answer: yourself
Step-by-step explanation:
because there is nothing more important than you
3. A shipping crate that is shaped like a rectangular
prism is 2.5 feet wide, 2 feet long, and has a height
of 4 feet. What is the volume of the shipping crate?
A. 20 ft
B. 10 ft
C. 8.5 ft
D. None of these
Answer:
A. 20 ft
Step-by-step explanation:
The volume of a right solid such as a rectangular shipping crate is found by multiplying the area of its base by its height. The area of this shipping crate is its length multiplied by its width = 2.5 x 2 = 5 feet. Now, we multiply the area of the base (5) by the height (4) to get 20 feet.
Amanda owns a local cupcake shop. She pays 1,500 each month for rent. It costs her 5.00 to make each batch of cupcakes. She sells each batch for 20.00 How many batches must she sell each month in order to make a profit? write an inequality to model this situation and solve.
Answer: 15x - 1500 > 0, 101 batches
Step-by-step explanation:
To begin, lets start by modeling this with a linear equation, (for sake of simplicity).
we can model this in the form y = mx + b, where y is 0, (meaning she isn't making profit OR losing money either).
Next, lets set up the parameters:
0 = mx + b. We can safely say that b, our constant, is -1500, because this is the money she "loses" every month.
Now we have 0 = mx -1500. We know she sells each batch for $20, so we also know that she makes 20x dollars for x batches. Our m = 20.
Now we have 0 = 20x - 1500. However, this equation is not completely correct, as we arent subtracting the cost for making each batch of cupcakes. The problem says that it costs her $5 to make each batch. So it will cost her 5x dollars for making x batches. If we subtract this from how much she sells each batch for, we get the profit she makes from selling each batch. So she makes a profit of (20x - 5x) = 15x dollars for x batches of cupcakes.
Out completed equation is 15x - 1500 = 0.
Solving this equation for x will give us how many batches she needs to sell to break even. To model this as an inequality for profit we simply replace the "=" sign with a ">" sign.
So our completed inequality is 15x - 1500 > 0
Solving this for x:
15x - 1500 > 0
15x > 1500
x > 100
Amanda needs to make more than 100 batches per month to make a profit. The greatest number of whole number batches over 100 is 101; so she needs to sell atleast 101 batches to make a profit every month.
ASAP 50 points!!!!!!
Given the functions f(x) = –x2 + 4x and g(x) = x - 4, describe or show Bethany how she could find where f(x) = g(x) using a system and name the value(s) for x.
Answer: x=-1, x=4
Step-by-step explanation:
A city planner has to build two small parks, shown in the diagram below. Park a is a triangle and park b is a rectangle. Find the length of each side of the park.
Answer:
The answer is one yard
Step-by-step explanation:
A city planner has plans to build two small parks, shown in the diagram below. Park is a triangle, and the park is a rectangle. Each unit on the coordinate grid represents a yard.
Answer:
show the picture an i will find it out
Step-by-step explanation:
y×y×y=32
If you get this correct you will be marked as the brainliest
Answer:
[tex]\sf y = 3.17[/tex]
explanation:
[tex]\sf y * y * y = 32[/tex]apply rule: a * a * a = a³
[tex]\sf y^3= 2^5[/tex]changing sides, changes cubic to cubic root
[tex]\sf y = \sqrt[3]{2^5}[/tex]simplify
[tex]\mathrm \huge {y = 2^{\frac{5}{3} }}[/tex]In decimals
[tex]\sf y = 3.174802104[/tex]In two decimal places
[tex]\sf y = 3.17[/tex]Solution:
Note that:
y × y × y = y³ = 32Taking a cube root both sides.
y³ = 32=> ∛y³ = ∛32Writing the prime factors of 32.
=> y = ∛2 x 2 x 2 x 2 x 2Simplifying ∛32
=> y = 2 x ∛2 x 2 = 2 x ∛4(18) What is the equation for a line perpendicular to the line described by the equation -3x + 12y – 7 = 0?
Answer:
Two lines are perpendicular if the product of their slopes equals -1.
In general form, this means that you reverse the coefficients of x and y and negate one of the two.
So the general form of this perpendicular line becomes: 12x + 3y + C = 0, or simplified: 4x + y + C’ = 0.
Now fill in the desired point to find C’: 4*(-2)+5+C’=0 so C’= 3.
The general form of the line becomes 4x + y + 3 = 0
Hope it helps!!!!!!Brainliest pls!!!!!!!For selling his studio apartment, Martin had to pay the real estate agent a commission of 5%. The studio sold for $95,000. What was the agent’s commission?
Noam is interested in estimating the average age of the Summer Olympians who have competed since 1980. She randomly selected 24 Olympians, and the result was this list of ages: 16, 17, 19, 19, 19, 20, 20, 20, 21, 21, 21, 21, 22, 22, 23, 23, 24, 25, 26, 27, 28, 29, 30, 32 Construct and interpret a 98% confidence interval for the true mean age of Summer Olympians since the 1980 Olympics. Use the table to determine the appropriate value of t*. Enter in the degrees of freedom and the value of t* (exactly as you see it written in the table). Degrees of freedom =
Using the t-distribution, as we have the standard deviation for the sample, it is found that the 98% confidence interval for the true mean age of Summer Olympians since the 1980 Olympics is (20.6, 24.8). It means that we are 98% sure that the true age of all Olympians is between these two values.
What is a t-distribution confidence interval?The confidence interval is:
[tex]\overline{x} \pm t\frac{s}{\sqrt{n}}[/tex]
In which:
[tex]\overline{x}[/tex] is the sample mean.t is the critical value.n is the sample size.s is the standard deviation for the sample.In this problem, with the help of a t-distribution calculator, with a two-tailed significance level of 0.02 and 24 - 1 = 23 degrees of freedom, the parameters are:
[tex]\overline{x} = 22.7, s = 4.15, n = 24, t = 2.5[/tex]
Then, the interval is:
[tex]\overline{x} - t\frac{s}{\sqrt{n}} = 22.7 - 2.5\frac{4.15}{\sqrt{24}} = 20.6[/tex]
[tex]\overline{x} + t\frac{s}{\sqrt{n}} = 22.7 + 2.5\frac{4.15}{\sqrt{24}} = 24.8[/tex]
The 98% confidence interval for the true mean age of Summer Olympians since the 1980 Olympics is (20.6, 24.8). It means that we are 98% sure that the true age of all Olympians is between these two values.
More can be learned about the t-distribution at https://brainly.com/question/16162795
What is the answer of "(2⁵ ÷ 2⁸) ÷ 2⁷" ?
In a a school , there are 600 students and the ratio of boys to girls is 2:3 find the number of boys and girls .
Simplify the ratio please
A car is moving at a uniform speed of 75km /hour.
a. How far will it travel in 20 minutes
b. Find the time required to cover a distance of 250km. fast
HELP
Tickets for a dance recital cost $16 for adults and $12 for children. The dance company sold 340 tickets, and the total
receipts were $4,800. How many adult tickets and how many child tickets were sold?
Answer:
adult tickets: 180
child tickets: 160
Step-by-step explanation:
adult tickets =x
child tickets =y
1. create a function
x+y=340
16x + 12y = 4800
2. solve
3. x = 180, y = 160 which also means 180 adult tickets were sold and 160 child tickets were sold
How many different license plates are possible if each plate contains a group of 6 letters and/or numbers?
Assume the letters can only be uppercase letters.
Answer:
click the image
Step-by-step explanation:
hope it's helpful
Please help!!!!!!!!!!!!!!!!!!!
Answer:
54 cm²
Step-by-step explanation:
The net of the 3 cm cube has 6 squares, each of which is 3 cm on a side. The area of each is (3 cm)² = 9 cm², so the total area is ...
6×9 cm² = 54 cm²
Find the GCF of the terms of each polynomial. 108f to the third power minus 54
Answer:
GCF is the Greatest Common Factor
I this Process you need to find HCF (Highest Common Factor) and Write the Common Number which is Greater among all.
GIVING OUT 50 POINTS
The area of the parallelogram below is ____ square meters. A parallelogram with height labeled with 8 meters. The top horizontal side is labeled 6 meters. The base of the left triangle formed by the height is 2 meters.
Answer:
The area of the parallelogram below is 48 square meters.
Explanation:
[tex]\sf area \ of \ parallelogram = base * height[/tex]
Given:
base: 6 mheight: 8 musing the formula:
→ base * height
→ 6 * 8
→ 48 m²
Fifteen full crates of walnuts weigh 585 pounds, whereas an empty crate weighs 10 pounds. How much do the walnuts alone weigh?
Answer:
435
Step-by-step explanation:
15 × 10 = 150
15 - 585 = 435
14 = 6x4+b
I WILL MARK BRAINLYIEST FOR 1ST PERSON