1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kari74 [83]
3 years ago
14

O translațoe sete difinită de formulele x1 = x + 1 si y1 = y - 1 .

Mathematics
1 answer:
Maksim231197 [3]3 years ago
7 0

Answer:

(3,-4)

Step-by-step explanation:

We have the equations

x_{1} =x+1\\y_{1}=y-1

Which are the coordinates for the point A_{1}.

We know by given that A(2,-3), which means x=2 and y=-3.

Replacing these values in the equations, we have

x_{1} =x+1 \implies x_{1} =2+1=3\\y_{1}=y-1 \implies y_{1}=-3-1=-4

Therefore, the coordinates for point A_{1} are (3,-4).

You might be interested in
A 15 foot building casts a 9 foot shadow. How tall is the building if it casts a 30 foot shadow at the same time?
ladessa [460]
15 : 9 = x : 30
x = 30 * 15 : 9
x = 50
7 0
3 years ago
CAN SOMEONE PLEASE HELP
Allushta [10]
4 is the right answer
4 0
2 years ago
Read 2 more answers
Ram noticed three students used 1 2/10 dm of tape.what was the total used for three students???
OLga [1]

Answer:

18/5

Step-by-step explanation:

<em>From my understanding, this is 1 whole 2 upon 10</em>

<u>Step 1: Convert mixed fraction into fraction</u>

<em>Multiply whole number by denominator: 1 x 10 = 10</em>

<em>Add numerator: 10 + 2 = 12</em>

<em>Write the result as the numerator and use the same denominator.</em>

12/10

<u>Step 2: Find the total tape used</u>

<em>From my understanding, each student used 12/10 of the tap</em>

<em>So 3 students used: 12/10 x 3 =</em> 18/5

Therefore, the total tape used for three students was 18/5.

!!

7 0
3 years ago
Jimmy threw a baseball in the air from the roof of his house. The path followed by the baseball can be modeled by the function f
erastovalidia [21]

Answer:

Step-by-step explanation:

The first part of A is easy. Look at the quadratic function, and the constant, the very last number with no t stuck to it represents the height from which the object in question was originally launched. Our constant is 40, so the height of the roof from which the baseball was thrown is 40 feet. Part 2 of A is not quite as simple because it requires factoring using the quadratic formula.Before we do that, let's make our numbers a bit more manageable, shall we? Let's factor out a -8 to get

f(t) = -(t^2-6t-5) and a = 1, b = -6, c = -5.

Filling in the quadratic formula now looks like this:

t=\frac{6+-\sqrt{6^2-4(1)(-5)} }{2(1)} and

t=\frac{6+-\sqrt{36+40} }{2} and

t=\frac{6+-\sqrt{56} }{2} so the 2 solutions are

t=\frac{6+\sqrt{56} }{2}=6.74sec and

t=\frac{6-\sqrt{56} }{2}=-.742sec and since we know time can NEVER be negative, the time it takes for the baseball to hit the ground from a height of 40 feet is 6.74 seconds. Onto part B.

In order to determine exactly how high the baseball did go, we have to find the vertex of the function. We do this by completing the square and getting the function into vertex, or work, form. Begin by setting the quadratic equal to 0, moving over the constant, and then factoring out the leading coefficient. The rule for completing the square are kinda picky in that you have to have a 1 as the leading coefficient, and righ now ours is a -8. So following the rules I stated above:

-8(t^2-6t)=-40 Next is the take half the linear term, square it, and then add it to both sides. Our linear term is a -6. Half of -6 is -3, and -3 squared is 9, so we add 9 into the parenthesis first:

-8(t^2-6t+9)=-40+??

Because this is an equation, we can't add 9 to one side without adding the equivalent to the other side. But, we cannot forget about that -8 sitting out front there, refusing to be ignored. We didn't just add in a 9, we actually added in a -8 times 9 which is -72. That's what goes on the right side in place of the ??.

-8(t^2-6t+9)=-40-72

The reason we complete the square is found on the left side of the equals sign. We have, in the process of completing the square, formed a perfect square binomial that will serve as the h in our vertex (h, k) where h is the number of seconds it takes for the baseball to reach its max height of k, whatever k is. That's what we have to find out. Putting the left side into its simplified perfect square binomial and adding the numbers on the right gives us:

-8(t-3)^2=-112

For the last step, add over the -112 and set it back equal to f(t):

-8(t-3)^2+112=f(t) From that we determine that the vertex is (3, 112). The max height of this baseball was 112 feet...so no, it did not make it up to the height of 120 feet that Jimmy wanted for the baseball.

6 0
2 years ago
At a dinner at Priya's favorite restaurant, the meal cost $18 and a sales tax of $1.71 was added to the bill.
Naily [24]

Answer:

$3.23

Step-by-step explanation:

1.71 ÷ 18 = 0.095 = 9.5%

9.5% × 34 = 3.23

5 0
2 years ago
Other questions:
  • A line segment with endpoints A(-4, 3, 2) and B(5, -6, -1) is translated first two units back and 3 units right and 1 unit up th
    8·1 answer
  • A(n)=-6+3(n-1) <br> Find the 16th term
    8·2 answers
  • Let f(x) = 4x - 5 and g(x) = 6x - 3. Find f(x) - g(x).
    7·2 answers
  • The number 323,000,000 in scientific<br> notation is 3.23 x 10". What is the value of n?
    11·1 answer
  • What is the second to smallest number with the factors 1,2,3,4, and 5?
    5·1 answer
  • A copy machine repairman makes $12.50 per hour plus $4 for every service call he performs. Last week he worked 34 hours and made
    5·1 answer
  • Bob and mark talk about their families. Bob says he has 3 kids, the product of their age is 72. He gives another clue: the sum o
    12·1 answer
  • Simplify the expression: 4(-4+n) =
    14·1 answer
  • Rashaj has $37.25 in his wallet. He would
    15·1 answer
  • Write the fraction as a decimal and a percent 42/100
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!