Answer:
y=2x−7
Step-by-step explanation:
so
formula is ( y 1 − y = m ( x 1 − x))
m is the slope
-1-y=2(3-x)
add 1 to both sides
−y−1+1=−2x+6+1
−y=−2x+7
divide both sides by -1
y=2x−7
Hope this helps
Brainliest please
Ask if u have more questions.
Last year, the school library had a total of x books. Over the summer, the library acquired another 40 books and now has a total of 1,795 books. Which equation could be used to find x, the number of books the library had last year?
Answer:
1794-40=x?
Step-by-step explanation:
this is genuine answer but a little bit unsure
Last year = x books
This year = x + 40 books
The needed equation is x + 40 = 1,795.
What is the value of the expression below when w=7 and x=2?
3w - 4x
Answer:
13
Step-by-step explanation:
3(7)-4x
3(7)-4(2)
21-8
=13
HELP ASAP ILL GIVE You 5 stars
What is the solution to this inequality?
7x + 25<=11
Answer:
Step-by-step explanation:
smplifying
7x + 11 = 25
Reorder the terms:
11 + 7x = 25
Solving
11 + 7x = 25
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-11' to each side of the equation.
11 + -11 + 7x = 25 + -11
Combine like terms: 11 + -11 = 0
0 + 7x = 25 + -11
7x = 25 + -11
Combine like terms: 25 + -11 = 14
7x = 14
Divide each side by '7'.
x = 2
Simplifying
x = 2
Answer: Inequality form: x<=-2
Interval notation: (-infinity,-2]
It took Mrs. Harpole 35 minutes to grade
four student essays. How long will it take
her to grade all her classes, 80 students?
Answer:
700 minutes or 11.67 hours
Step-by-step explanation:
35/4=8.75
8.75*80=700
angle C and angle D are a linear pair. angle C is four times larger than angle D. What is the measure of angle C?
By using the fact that the angles form a linear pair, we will see that the measure of angle C is 144 degrees.
How to determine the measures of angles C and D?
Well, we know that these are a linear pair, which means that the angles are supplementary, thus, their measures add up to 180°.
So we can write:
C + D = 180°
Now, we also know that C is four times larger than D, so we can write:
C = 4*D
Replacing that in the equation above we get:
4*D + D = 180°
5*D = 180°
D = 180°/5 = 36°
Then we know that the value of D is 36°, and C is 4 times that, so:
C = 4*36° = 144°
The measure of angle C is 144 degrees.
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Nellle has her hair styled by her hair stylist. The styling costs $85 and Nellie wants to leave a 30% tip. There is a tax rate of 6%.
and tip?
Answer:
115.60
Step-by-step explanation:
for a tip 85x 0.30=25.50
tax 85x0.06=5.10
total extra money 5.10+25.50=30.60
total money payed 85+30.60=115.60
Hope this helped
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There are 15 pieces of fruit in a bowl and 6 of them are apples. What percentage of the pieces of
fruit in the bowl are apples?
A. 0.06%
B. 40%
C. 6%
D. 0.4%
Answer:
40%.
Step-by-step explanation:
There are 6 / 15 apples out of the bowl.
6/15 = 2/5 = 0.4
So, 40% of the fruit in the bowl are apples.
Hope this helps!
Emily is buying cold-weather gear for her family. she pays $100 for 5 pairs of waterproof gloves that each cost the same amount. four of the pairs of gloves are mittens.which expression represents the total cost of four pairs of mittens
Answer:
the 4 pairs cost 80$
Step-by-step explanation:
Ps. My name is Emily
Answer:
yeetjdjsjsjdjdjjssjsbjsjshssujsidsjsnjsnsnsjdudbejdhdd
A nest of ants has been growing exponentially in such a way that it's population,P, as a function increasing on average more or less than 1600 ants per week? Enter the value per week to the nearest tenth.
Not sure question is complete, assumptions however
Answer and explanation:
Given the above, the function of the population of the ants can be modelled thus:
P(x)= 1600x
Where x is the number of weeks and assuming exponential growth 1600 is constant for each week
Assuming average number of ants in week 1,2,3 and 4 are given by 1545,1520,1620 and 1630 respectively, then we would round these numbers to the nearest tenth to get 1500, 1500, 1600 and 1600 respectively. In this case the function above wouldn't apply, as growth values vary for each week and would have to be added without using the function.
On one hand, the function above could be used as an estimate given that 1600 is the average growth of the ants per week hence a reasonable estimate of total ants in x weeks can be made using the function.
Here's a graph of a linear function.
Write the
equation that describes that function.
Express it in slope-intercept form.
Answer:
y = 1/2x + 3Step-by-step explanation:
As per graph, using the points (-6, 0) and (0, 3) we determine that:
the y-intercept is 3 and the slope is m = (3-0)/(0 - (-6)) = /3/6 = 1/2So the equation is:
y = mx + by = 1/2x + 3Question 3
True or false. A discount will add to the total cost you
will pay for an item.
Answer:
False
Step-by-step explanation:
$650,000 was stolen from 1st Trust American Bank during a heist. The bank robbers got away clean and sped away traveling at a constant rate of 70 miles per hour. What the robbers did not realize is that one of the bank bags had a GPS tracking device inside of it. Once the police locked on to the signal of the tracking device they took off after the robbers traveling at a constant rate of 90 miles per hour. If the robbers already had a 30 mile head start, how long will it take the police to pass them and force them off the road to be arrested?
Answer:
The time taken before the police force the robbers off the road is 1.5 hours
Step-by-step explanation:
The speed with which the robbers were travelling = 70 miles per hour
The speed with which the police went after the robbers = 90 miles per hour
The distance with which the robbers were in front of the police before the police came after them = miles
Let t represent the time in hours the police force the robbers off the road, we have;
30 + 70 × t = 90 × t
30 = 90 × t - 70 × t = (90 - 70) × t = 20 × t
30 = 20 × t
20 × t = 30
t = 30/20 = 1.5
t = 1.5 hours
The time taken before the police force the robbers off the road = t = 1.5 hours
Answer:
The time taken before the police force the robbers off the road is 1.5 hours
Step-by-step explanation:
find the measure of the acute angles pls help
Answer:
60 degrees
and
52 degrees
write down 45 in the Scientific Notation
Answer:
4.5x10^1
The first value should be less than 10
A rectangle has vertices E(-4, 8), F(2, 8), G(2, -2) and H(-4, -2). The rectangle is dilated with the origin as the center of dilation so that G' is located at (5, -5). Which algebraic representation represents this dilation?
Answer:
The dilation on any point of the rectangle is [tex]P'(x,y) = \frac{5}{2}\cdot P(x,y)[/tex].
Step-by-step explanation:
From Linear Algebra, we define the dilation of a point by means of the following definition:
[tex]G'(x,y) = O(x,y) +k\cdot [G(x,y)-O(x,y)][/tex] (1)
Where:
[tex]G(x,y)[/tex] - Coordinates of the point G, dimensionless.
[tex]O(x,y)[/tex] - Center of dilation, dimensionless.
[tex]k[/tex] - Scale factor, dimensionless.
[tex]G'(x,y)[/tex] - Coordinates of the point G', dimensionless.
If we know that [tex]O(x,y) = (0,0)[/tex], [tex]G(x,y) =(2,-2)[/tex] and [tex]G'(x,y) =(5,-5)[/tex], then scale factor is:
[tex](5,-5) = (0,0) +k\cdot [(2,-2)-(0,0)][/tex]
[tex](5,-5) = (2\cdot k, -2\cdot k)[/tex]
[tex]k = \frac{5}{2}[/tex]
The dilation on any point of the rectangle is:
[tex]P'(x,y) = (0,0) + \frac{5}{2}\cdot [P(x,y)-(0,0)][/tex]
[tex]P'(x,y) = \frac{5}{2}\cdot P(x,y)[/tex] (2)
The dilation on any point of the rectangle is [tex]P'(x,y) = \frac{5}{2}\cdot P(x,y)[/tex].
Algebraic representation of the dilation will be T'(x, y) → T(2.5x, 2.5y).
Dilation of a rectangle about a point not the origin:Let one of the four vertices of a rectangle is (h, k) is dilated about the origin by the scale factor 'k'.Rule for the transformation will be,
[tex]D_{(o,k)}(x,y)\rightarrow (kx,ky)[/tex]
Following this rule,
If one of the vertices of a rectangle is G(2, -2) and it is dilated by a scale factor 'k', image point will be given by,[tex]D_{(o,k)}(2, -2)\rightarrow (2k, -2k)[/tex]
Since, coordinates of the dilated point are G'(5, -5),
Therefore, (2k, -2k) = (5, -5)
⇒ 2k = 5
⇒ k = 2.5
Hence, algebraic representation defining the dilation of the
triangle will be,
T'(x, y) → T(2.5x, 2.5y)
Algebraic representation of the dilation will be T'(x, y) → T(2.5x, 2.5y).
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Write a two-column proof
Given: ∠1 and ∠2 are supplementary, m∠1 = 135°
Prove: m∠2 = 45°
Notice:
Unfortunately I’ve never written a two-column proof before. So I can’t do that. Let me know if what I can do helps at all though.
Step-by-step explanation:
A supplementary angle is an angle made up of two angles that have measures that add up to 180°. m∠2 = 45° because 45° added to 135° equals 180°. Therefore making it a supplementary angle. Meaning that m∠2 = 45° is true. Sorry if this doesn’t help. I tried my best.
Amelia took a taxi from her house to the airport. The taxi company charged a pick-up fee of $4.60 plus $0.50 per mile. The total fare was $13.60, not including the tip. Write and solve an equation which can be used to determine
m
m, the number of miles in the taxi ride.
What is the length of segment AB? (1 point)
Coordinate grid shown from negative 8 to positive 8 on both x axis and y axis at intervals of 1. A straight line labeled AB is drawn. A is the ordered pair 0, 6 and B is the ordered pair 7, 0.
Group of answer choices
Square root of 13
Square root of 85
14
13
Answer:
Square root of 85
Step-by-step explanation:
We can envision the segment AB as the hypotenuse of a right triangle with a height of 6 units and a length of 7 units. We can use the Pythagorean Theorem to solve for the length of segment AB which is similar to distance formula.
6^2 + 7^2 = c^2
36 + 49 = c^2
c^2 = 85
c = Square root of 85.
sarah reads 6 stories in 8 day
salma reads 11 stories in 8 days
how many stories can salma read more than sarah in 24 days?
ISSS THIS CORRECT??????please help
Answer:
I think that is correct, sorry if i get it wrong
Answer:
Step-by-step explanation:
(4,1) you are correct
thhe solution is the intersection of thhe 2 graphs because that point of intersection belongs to both lines in the same time
Place these number in order from greatest to least.
-7/5, 16, -1, 3.2, -6.5, 0, 3/4,
Answer:
Step-by-step explanation:
First, change the fractions into decimals, then use the knowledge of the number line system to know which is greater or smaller than who.
-7/5 -1.4
3/4 0.75
so the numbers are -1.4, 16, -1, 3.2, -6.5, 0, 0.75
from greatest to least:
= 16, 3.2, 0.75, 0, -1, -1.4, -6.5
Which best explains how you know that A(-1,6) is on the same line as a B( -3,10) and C (-5,14)
Answer:
To get from A to B and from B to C, you move left 2 units and then up 4 units.
Step-by-step explanation:
hope this helps :)
Solve the following system of equations:
x − 2y = 14
x + 3y = 9
Answer:
(12, - 1)
Step-by-step explanation:
x - 2y = 14 ......... (1)
x + 3y = 9 ......... (2)
(2) - (1)
(x - x) + (3y - ( - 2y)) = 9 - 14
5y = - 5 ⇒ y = - 1
x + 3( - 1) = 9 ⇒ x = 12
(12, - 1)
Find the slope of the line that passes through the points (2, 1) and (-1,-1).
O
02
O 2/3
Answer:
0
Step-by-step explanation:
m=y2-y1 / x2-x1
m= -1-1/-1-2
m=0/-3
m=0
The perimeter of a rectangle is 56 cm. When its length is reduced by 2 cm and its
width is increased by 4 cm, a square is formed. What is the area of the rectangle ?
solve the following equation 3(x+6) =4(2x-8)
Answer:
x=10
Step-by-step explanation:
3(x+6)=4(2x-8)
3x+18=8x-32
8x-3x=18+32
5x=50
x=10
Answer:
3x+18=8x-32
18+32=8x-3x
50=5x
x=10
45 Points- Geometry
HELP ME
S<--->T
T<--->S
Same thing
4Both sides a equivalent therefore both triangle areas are also equivalent
9514 1404 393
Explanation:
The missing reasons are ...
3. Reflexive property of congruence. A segment is congruent to itself.
4. SSS postulate. The three corresponding sides are shown congruent, so the triangles are congruent.
The equivalent of (-8)-4.(-8)2
The equivalent value of the expression (-8)-4.(-8)² is 768
what is expression?An expression in math is a sentence with a minimum of two numbers or variables and at least one math operation.
Given:
(-8)-4.(-8)²
Using properties of integers
(-8-4)*(-8* -8)
=(-12) * (-64)
= 768
Hence, the equivalent value is 768.
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How to write vertex form when given to choices of “a” in a question ex: write the vertex form of the function where a=1 or a= -1 and H and K are integers? And the vertex is (-1,4)
Answer:
Step-by-step explanation:
Vertex form of quadratic equation is
[tex]y = a(x-h)^2 + k[/tex]
where h and k are the x and y coordinates of the vertex, respectively.
so in this problem
if a=1 and Vertex is (-1,4) means h= -1 and k = 4
the equation will be
[tex]y = 1 (x-(-1))^{2} + 4[/tex]
[tex]y = (x+1)^2 + 4[/tex]
if a=-1 and Vertex is (-1,4) means h= -1 and k = 4
the equation will be
[tex]y = -1 (x-(-1))^{2} + 4[/tex]
[tex]y = -(x+1)^2 + 4[/tex]
Question 1 (2 points)
Jeff is purchasing a car for $29,175 that will depreciate in value 7.5% each year.
Write a function to model the value P of the carafter t years,
If he decides to sell the car after 6 years, what will be the value of his car? Express your answer as a decimal rounded to the nearest hundredth.
Answer:
p= 18,275
Step-by-step explanation:
The function would be p=29,175(-0.925)^t. You would then substitute t for 6 and solve from there to get p=18,275.
Did it help at all?