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3 years ago

Write a system of equations with the solution (4,-3)

1 answer:

7 0

So from the coordinate, you know that x = 4 and y = -3.

So how about:
x = 4
y = -3

If you graph them the solution is (4, -3)

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Please answer correctly !!!!!! Will mark brainliest !!!!!!!!!!!!!

romanna [79]

Answer:

x = - 9, x = 10

Step-by-step explanation:

Given

x² - x - 90 = 0

Consider the factors of the constant term (- 90) which sum to give the coefficient of the x- term (- 1)

The factors are - 10 and + 9, since

- 10 × 9 = - 90 and - 10 + 9 = - 1 , thus

(x - 10)(x + 9) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 10 = 0 ⇒ x = 10

x + 9 = 0 ⇒ x = - 9

lesser x = - 9

greater x = 10

5 0

3 years ago

se quiere pintar una pared en forma de hexágono regular y se sabe que cada lado mide 3m y que su apotema es de 2,8m cual es el a

qwelly [4]

Answer:

El área total a pintar será:

$A_{tot}=25.2\: m^{2}$

Step-by-step explanation:

Sabiendo el apotema y la longitu de los lados, podemos encontrar el área de un triangulo. Recordemos que, si trazamos rectas del centro del hexágono a los vértices, se formaran 6 triángulos equiláteros.

El área de un triángulo es:

$A_{t1}=\frac{b*a}{2}$

b es la longitud de la base (b=3 m)

a es la apotema, osea la altura del triangulo (a = 2.8)

$A_{t1}=\frac{2.8*3}{2}$

$A_{t1}=4.2\: m^{2}$

Ahora, solo debemos mutiplicar ese valor por 6 para determianr el área total de la pared.

$A_{tot}=25.2\: m^{2}$

Espero te haya sido util!

5 0

3 years ago

A recent poll found that 35% of those surveyed are worried about aggressive drivers on the road. If three people are selected at

Ugo [173]

The probability that all three people surveyed is an independent probability and the calculated probability is 0.1225

The probability a surveyed driver is worried = 35%

P(worried) = 0.35

Number of people surveyed = 3

Since the probability of being worried is independent ;

Probability = P(A) × P(B) × P(C)

The probability that all 3 surveyed are worried :

P(worried) × P(worried) × P(worried)
(0.35 × 0.35 × 0.35) = 0.1225

Therefore, the probability that all three people surveyed are worried is : 0.1225

Learn more : brainly.com/question/18153040

5 0

3 years ago

H(x) = x^2 + 1 k(x) = x – 2<br> (h + k)(2)=?

likoan [24]

First we will compute the h+k and then multiply the result by 2.
To add polynomials, we add terms whose variables are alike, for example:
we add the coefficients of x^2 together, the coefficients of x together and so on.

Therefore:
h + k = x^2 + 1 + x - 2 = x^2+x-1

Now, we will multiply this answer by 2 to get the final answer:
2(h+k) = 2(x^2+x-1) = 2x^2 + 2x -2

6 0

4 years ago

taki has her back to a wall. she starts to walk straight forward. she stops and turns 133° to the right and walks back in this d

Nikitich [7]

I'd like to assume that the triangle is a right triangle and you solve for x so...

133 + c = 180 (supplementary property to find one angle of triangle)
c = 47

x = 180 - 90 - 47 (int. angles of triangle = 180)
= 90 - 47
= 43

Therefore, x is 43 degrees

6 0

3 years ago