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EastWind [94]
3 years ago
8

4.5(x–2)= 13 ????????????

Mathematics
2 answers:
Lapatulllka [165]3 years ago
5 0

Answer: x=44/9 or 4 8/9

Step-by-step explanation:

or is you need a decimal form it will be 4.89

Alex17521 [72]3 years ago
4 0
The answer would be x=4.88
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Plot the x- and y-intercepts of function f(x)=x
katrin2010 [14]
Because f(x)=x, goes through origin. So x and y -intercept are one point (0,0).
5 0
3 years ago
Read 2 more answers
-7x - 6у = 4<br> x = -3y + 8<br> Solve the system if equations<br> X=?<br> Y=?
Gala2k [10]

Answer:

(x, y) = ( -4 , 4)

Step-by-step explanation:

STep 1: substitute the given value of x into the equation -7 x - 6y = 4 which will be -7 (-3 y + 8) - 6 y = 4

STEP 2: solve the equation for y so basically -7 (-3 y + 8) - 6 y will be y = 4

STEP 3:substitute the given value of x into the equation so y = 4 would be

x = -3 x 4 + 8

STEP 4: solve the equation for x.  -3 x 4 + 8 which you'd end up with x = -4

6 0
3 years ago
Can someone help me?
olya-2409 [2.1K]
All the properties of a parallelogram apply (the ones that matter here are parallel sides, opposite angles are congruent, and consecutive angles are supplementary).
All sides are congruent by definition.
The diagonals bisect the angles.
7 0
3 years ago
Una piscina rectangular de 15 m de largo por 9m de ancho está rodeada por un camino de cemento de ancho uniforme. ¿Si el área de
malfutka [58]

Answer:

El ancho del camino es 1.5 m.

Step-by-step explanation:

Una piscina rectangular posee 15 m de largo por 9 m de ancho.

El área de un rectángulo es igual a la base por la altura. Es decir, lado mayor por lado menor. Entonces el área de la piscina es 15 m* 9 m= 135 m²

La piscina está rodeada por un camino de cemento de ancho uniforme, al cual se denomina x y estará en unidades de metros (m). Entonces el largo de la piscina sumado al ancho a ambos lados de la piscina será 15 m + 2*x, mientras que el ancho de la piscina sumado al largo a ambos lados de la piscina es 9 m + 2*x. Entonces este área se puede expresar como

(15 m+2*x)*(9 m+ 2*x)

Entonces al área de la piscina sumado al camino se le resta el área de la piscina y da como resultado el área del camino, cuyo valor es 81 m²:

El área total - área de la piscina =  área del camino

(15 m +2*x)*(9 m+ 2*x) - 135 m²= 81 m²

Resolviendo:

15*9 m²+15*2*x + 9*2*x + 2*x*2*x - 135 m²= 81 m²

135 m² + 30*x + 18*x + 4*x² - 135 m²= 81 m²

48*x + 4*x² = 81 m²

48*x + 4*x² - 81 m²= 0

Siendo una ecuación cuadrática donde a= 4, b= 48 y c= -81, entonces:

\frac{-48+-\sqrt{48^{2}-4*4*(-81) } }{2*4}

Resolviendo:

\frac{-48+\sqrt{48^{2}-4*4*(-81) } }{2*4}= 1.5

\frac{-48-\sqrt{48^{2}-4*4*(-81) } }{2*4}= -13.5

Como las distancias solo pueden ser positivas, entonces <u><em>el ancho del camino es 1.5 m.</em></u>

En la imagen adjunta se puede observar un gráfico de la piscina más el camino

5 0
3 years ago
In the rectangle below, AE = 3x+7, CE = 5x-7, and m Find BE and m
Alborosie

Answer:

AE-3*x+7=0 and CE=5*x-7

Step-by-step explanation:

-3*x and -7 move these terms to the left it becomes AE-3*x-7=0 do the same step that you did with the first one.

3 0
3 years ago
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