A line passes through the point (-2, 7) and has a slope of -5.
What is the value of a if the point (a, 2) is also on the line?
a. -7
b.-1
c.1
D.7
I NEED ANSWERS SOON
Answers
Answer:
[tex]\boxed{a = 3}[/tex]
Step-by-step explanation:
[tex] (using \: the \: points : (2, \: 7) = ( x_{1}, \: y_{1}\: \: ) \\ hence : (a, \: 2) = ( x_{2}, \: y_{2}\: \: ) \\ but \: m = \frac{ y_{2} -y_{1} }{x_{2} - x_{1}} = \frac{2 - 7}{a - 2} \\ - 5 = \frac{2 - 7}{a - 2} \\ - 5(a - 2) = 2 - 7 \\ - 5a + 10 = 2 - 7 \\ - 5a = - 5 - 10 \\ - 5a = - 15 \\ a = \frac{ - 15}{ - 5} \\ \boxed{a = 3}[/tex]
Related Questions
Hi, can someone help me?
Answers
Answer:
No, no puedo ayudarte aunque te deseo buena suerte
Answer:
the price !!
Step-by-step explanation:
the price of donut holes depends on the number of them!! you cant tell the price without the donuts !!
a way to think of it could be "the price can't exist without the product (the donuts) so, the price dependent on the donuts. its the dependent!"
i really hope this helps!
In triangle DEF, if the measures of angles D and E are equal, and the measure of
angle F is 26, what are the measure of angles D and E?
Your answer
Answers
Answer:
77 = m∠D = m∠E
Step-by-step explanation:
In a triangle the sum of the measures of the angles = 180. So m∠D + m∠E + m∠F = 180
Let m∠D = m∠E = x
Then x + x + 26 = 180
2x + 26 = 180
2x = 154
x = 77 = m∠D = m∠E
What is the value of x?
Answers
3x = 96 divide both sides by 3
x= 32°
The Maine Public Health Department reported that there have been 90 flu cases requiring hospitalization in Portland, ME (population of 70,000) since the beginning of 2018 - today is July 4th, 2018. On February 1st, 2018, 43 of those cases were hospitalized. What was the prevalence rate of flu cases requiring hospitalization thus far in 2018?
Answers
Answer:
The prevalence rate of flu cases requiring hospitalization thus far in 2018 is:
= 0.13%
Step-by-step explanation:
a) Data and Calculations:
Population of Portland, ME = 70,000
Number of flu cases requiring hospitalization on February 1st, 2018 = 43
Number of flu cases requiring hospitalization on July 4th, 2018 = 90
The prevalence rate of flu cases requiring hospitalization thus far in 2018 = 90/70,000 * 100 = 0.13%
b) The prevalence rate represents the proportion of the population of Portland, ME, who have the flu at the time that the Maine Public Health Department reported the number of flu cases requiring hospitalization on July 4th, 2018.
Graph the linear function using slope intercept form
y=2x+6
Answers
Write the quadratic equation whose roots are 6 and -6, and whose leading coefficient is 2.
(Use the letter x to represent the variable.)
Answers
Answer:
y = 2x² - 72 = 0
Step-by-step explanation:
2(x - 6)(x + 6) = 0
2(x² - 36) = 0
2x² - 72 = 0
The quadratic equation with roots 6 and -6 and a leading coefficient of 2 is 2x² - 72 = 0 represents the quadratic equation.
A quadratic equation with roots at 6 and -6 can be written in factored form as:
(x - 6)(x + 6) = 0
To find the quadratic equation with the leading coefficient of 2, we multiply both sides of the equation by 2:
2(x - 6)(x + 6) = 0
Expanding the equation:
2(x² - 36) = 0
Distributing the 2:
2x² - 72 = 0
Therefore, the quadratic equation with roots 6 and -6 and a leading coefficient of 2 is:
2x² - 72 = 0
To know more about quadratic equation click here :
https://brainly.com/question/30111792
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hi find the distance in the coordanite plane between the two points and show ur work
1 (5, -8) and (5,2)
2 (-8, -2) and (7, -2)
3 (9, 10) and (9, -2)
4 (11 , 6) and (-7, 6)
Answers
Answer:
The distance between (5, -8) and (5,2) is: d = 10 units
Step-by-step explanation:
Note: I will solve the first question as the procedure solution for the remaining questions is exactly the same.
Given the points
(5, -8)(5,2)Determining the distance between (5, -8) and (5,2)
[tex]d=\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}[/tex]
substitute (x₁, y₁) = (2, 3) and (x₂, y₂) = (2, -5)
[tex]=\sqrt{\left(5-5\right)^2+\left(2-\left(-8\right)\right)^2}[/tex]
[tex]=\sqrt{\left(5-5\right)^2+\left(2+8\right)^2}[/tex]
[tex]=\sqrt{0+10^2}[/tex]
[tex]=\sqrt{10^2}[/tex]
[tex]=10[/tex] units
Therefore, the distance between (5, -8) and (5,2) is: d = 10 units
WILL MARK BRAINLIST JUST ANSWER QUICKLY
A puddle originally contained 5 gallons of water. After a hot day, only 3.5 gallons of water remain.
What is the percent decrease?
Enter your answer in the box.
Answers
Answer:
The answer is 30%
Step-by-step explanation:
((5-3.5)/5) × 100%
Answer:
30%
Step-by-step explanation:
the other guy is right
Please show work so i know how you got your answer
Answers
Answer:
24
Step-by-step explanation:
7 5/6 x3 =23.5
A student council sells 44 bouquets for $176. Which equation represents the
relationship of x bouquets to y dollars?
Answers
Answer:
[tex]y = 4x[/tex]
Step-by-step explanation:
Given
[tex]x = 44[/tex]
[tex]y = 176[/tex]
Required
Determine the relationship between x and y
First, we calculate the unit rate, using:
[tex]y = kx[/tex]
Where k is the unit rate.
Substitute 176 for y and 44 for y
[tex]176 = k * 44[/tex]
Divide both sides by 44
[tex]\frac{176}{44} = \frac{44*k}{44}[/tex]
[tex]\frac{176}{44} = k[/tex]
[tex]4 = k[/tex]
[tex]k = 4[/tex]
Substitute 4 for k in [tex]y = kx[/tex]
[tex]y = 4x[/tex]
Hence, the relationship between x and y is: [tex]y = 4x[/tex]
Use the coordinates of the labeled point to find the point-slope equation of
the line
812-18
O A. y + 1 = -2(x - 2)
O B. y-2-2(x+1)
O C. y- 1 = -2(x + 2)
O D. y-2 = 2(x + 1)
Answers
(0,3) and (2,-1) are points on the line.
slope = (-1-3)/(2-0) = -2
Point-slope equation for line of slope m that passes through (x₀, y₀):
y-y₀ = m(x-x₀)
m = -2
(x₀, y₀) = (2,-1)
y+1 = -2(x-2)
Answer: y+1 = -2(x-2) is the correct answer
Step-by-step explanation: I just took the exam :)
Solve the equation and show all your work. 7x = 4x + 15
Answers
Answer:
x=5
Step-by-step explanation:
subtract 4x from both sides
7x-4x=4x-4x+15
3x=15
divide by 3 on both sides
3x/3=15/3
x=5
Derrick has 2 1/2 cups of sugar. He needs 1/8 of a cup of sugar for each recipe. How many recipes can be make
Answers
Answer:
20
Step-by-step explanation:
please help me find this out please
Answers
Answer:
can you zoom in on the questions?
Step-by-step explanation:
A bakery sold 36 brownies in a day, which was 30% of the total items sold that day. What was the total number of items the bakery sold that day?
Answers
Answer:
120
Step-by-step explanation:
We know that 36 is 30% of total items
So our equation would be 36/? = 30/100
From there we cross multiply so 36x100 = 3600
From there, we divide 3600 by 100
Therefore, your answer is 120
Write the equation for the graphed function
Answers
Answer:
4x² + 16x + 15 = 0
Step-by-step explanation:
We'll begin by determining the solutions to the graph.
The solutions to the graph is obtained by taking the values where the graph cut through the x–axis. This is illustrated below:
The solutions to the graph are:
x = –1.5 or –2.5
Finally, we shall determine the equation for the graph as follow:
x = –1.5 or x = –2.5
x = –3/2 or x = –5/2
Cross multiply
2x = –3 or 2x = –5
Rearrange
2x + 3 = 0 or 2x + 5 = 0
Combine
(2x + 3)(2x + 5) = 0
Expand
2x(2x + 5) + 3(2x + 5) = 0
4x² + 10x + 6x + 15 = 0
4x² + 16x + 15 = 0
Thus, the equation for the graph is:
4x² + 16x + 15 = 0
In detail and with multiple examples, describe how you can use math in your daily life. it needs 15 to 16 sentence i will give you brainest help me plzzz
Answers
Balancing the checkbook
Shopping for the best price
Preparing food
Figuring out distance, time and cost for travel
Understanding loans for cars, trucks, homes, schooling or other purposes
Understanding sports (being a player and team statistics)
Playing music
Baking
Home decorating
Sewing
Gardening and landscaping.
Hope I was able to help!
Solve for x: -3x +10 = 31
Answers
x = -7
Explanation:
-3x * -7 = 21
21 + 10 = 31
Answer:
x= -7
Step-by-step explanation:
-3x=21 . subtract 10 from 31
then you divided by 3
x= -7
Is a iready diagnostic score 483 for a 8th grader in math good?
Answers
Answer:
yes
Step-by-step explanation:
can learn lot and get better.
evaluate the following algebraic expression for the given value of x.
4x-5 where x=5
Answers
Answer:
15 is answers
x=5
Step-by-step explanation:
4x-5
4×5-5
20-5
15
determine whether a triangle with these side lengths would be acute, right, or obtuse: 5, 7, and 10;
Answers
Answer:
obtuse
Step-by-step explanation:
Let 5 = a, 7 = b, 10 = c
if a^2 + b^2 = c^2, then the triangle is a right triangle by the converse of the Pythagorean Theorem
If a^2 + b^2 > c^2, then the triangle is an acute triangle by Theorem 8-4
if a^2 + b^2 < c^2, then the triangle is an obtuse triangle by Theorem 8-3
a^2 = 25
b^2 = 49
c^2 = 100
25 + 49 < 100, therefore the triangle is an obtuse
What is 5/10 = x/100
Answers
Answer:
= 50
Step-by-step explanation:
What is the answer. I can’t figure out the formula
Answers
9514 1404 393
Answer:
Angles 4, 5, 6, 7, 8, 9 are 82°Angles 1, 2, 3, 10, 11, 12 are 98°Step-by-step explanation:
Angles are related in this geometry by being either congruent or supplementary. Corresponding and vertical angles are congruent; any linear pair of angles is supplementary.
The given angle 5 is on the southwest corner of the intersection of the parallel line with the transversal. All southwest and northeast angles are congruent to that. That is, angles 4, 5, 6, 7, 8, 9 will all have the same measure. The remaining angles will have the supplementary measure.
Angles 4, 5, 6, 7, 8, 9 are 82°
Angles 1, 2, 3, 10, 11, 12 are 98°
_____
As you know, supplementary angles total 180°, so each is found by subtracting the other from 180°: 180° -82° = 98°.
10 PTS
NEED HELP ASAP
Answers
Answer:
C (3x2)x8+7
Step-by-step explanation:
A commuter train travels 65 miles in 27 minutes. What is its speed in miles per minute?
Answers
Answer:
2.407407 miles per minute
Step-by-step explanation:
Please help me !!!!!!!!!!!!!!!
Answers
Every pupil in a class either swims or rides a horse three fifths of the class swim and three fifths ride horses five pupils both swim and ride horses how many pupils are in the class
Its one of these [ 15 Or 20 Or 25 Or 30 Or 35 ]
Answers
Answer:
Equestrianism (from Latin equester, equestr-, equus, 'horseman', 'horse') commonly known as horse riding (British English) or horseback riding (American English),includes the disciplines of riding, driving, or vaulting with horses. This broad description includes the use of horses for practical working purposes, transportation, recreational activities, artistic or cultural exercises, and competitive sport.
Check for understanding:
Use < or > to compare the following: 45.112_45.15 (Explain your answer)
Answers
Answer:
you use the < sign because 45.112 is less than 45.15
Step-by-step explanation:
Solve the following problems. Rajesh jogged 3/4 mile and then walked 1/6 mile to cool down . how far did he travel?
Answers
Answer: 11/12 or if you want to pit it in decimal
Use 0.90
Step-by-step explanation:
Ms. Hart paid $300 for 6 admission tickets and a $15 parking pass for an amusement park.
What is the cost of one admission ticket?
The cost of one admission ticket is $
Answers
Answer:
The cost of one admission ticket is 47.5