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4 years ago

14

Help is very much appreciated!

1 answer:

Alex17521 [72]4 years ago

6 0

...what do you mean...can you pls explain what you need help with I would love to help but I can’t find the problem :)

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What is the substitution to 3x y=-16 5x y=-20?

erica [24]

The first one ,to substitute 3xy from -16 ...so divided both side by 3 .so, (xy =-5.33). the second one,5xy =-20. so,divided both sides by 5 so xy = -4....

5 0

3 years ago

El caudal promedio del río chillón alcanzo 1,74 m3/s, cifra que representó un aumento de 5, 5% con relación al mes de agosto de

saul85 [17]

El caudal del río Chillón en agosto de 2.020 fue de 1,649 metros cúbicos por segundo.

Una lectura atenta al enunciado de la pregunta indica que el caudal <em>promedio</em> es 5,5 % mayor que el caudal del mes de agosto de 2.020. Por la definición de porcentaje tenemos la siguiente relación entre las dos cantidades:

$1,74\,\frac{m^{3}}{s} = \left(1+\frac{5,5}{100} \right)\cdot x$

En consecuencia, el caudal del río Chillón es igual a:

$x = 1,649\,\frac{m^{3}}{s}$

El caudal del río Chillón en agosto de 2.020 fue de 1,649 metros cúbicos por segundo.

Invitamos cordialmente a consultar este problema sobre porcentajes: brainly.com/question/18546712

7 0

3 years ago

The diameter of a circle is 3.2 meters. Which is the circumference of the circle rounded to the nearest hundredth of a meter?

Paraphin [41]

Answer:

10.05 meters

Step-by-step explanation:

If the diameter is 3.2 meters, then the radius is 1.6 meters.

Use the circumference formula, C = 2 $\pi$ r, and solve for C

C = 2 $\pi$ r

C = 2 $\pi$ (1.6)

C = 3.2 $\pi$

C = 10.05

So, to the nearest hundredth of a meter, the circumference is 10.05 meters

4 0

3 years ago

Simplify and determine the coefficient of (-2/3x)(3y)(-2x).

aleksandrvk [35]

Answer:

$4x^{2}y$

Step-by-step explanation:

$(-2/3)(3)(-2)=4$

so the coefficient is 4

$(x)(x) =xx^{2}$

When we multiply 2 same variable we add their power

$(x^{2})(y)=x^{2}y$

So the last answer is $4x^{2} y$

6 0

3 years ago

Pentagon P and pentagon Q, shown above, are congruent

worty [1.4K]

Flip about the y-axis, move it up 7 spaces.

7 0

3 years ago