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Ann [662]
3 years ago
13

Hello please help me on these questions!

Mathematics
1 answer:
Tatiana [17]3 years ago
5 0
1.) 1.19
2.) 0.27
3.) 0.41 
4.) 0.92
5.)0.13

Please make me as brainlyest answer, 5 starts, a thank you, and Comment! 
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La suma de las edades de tres personas es 127años. La mayor tiene 30 años mas que la menor y la del intermedio 26 menos que la m
Over [174]

Answer:

La mayor tiene 61 años.

Step-by-step explanation:

Sea x,y,z la edad de la mayor, intermedio y la menor respectivamente.

Tenemos las siguientes ecuaciones:

x+y+z=127 (la suma de las edades es 127)

x = z+30 (la mayor tiene 30 años más que la menor)

La frase "y la del intermedio 26 menos que la menor" no tiene sentido, puesto que esto implicaría que la del intermedio es menor que la menor. Luego se asume que la frase ha de ser "y la del intermedio 26 menos que la mayor"

x-26 = y (la del intermedio tiene 26 menos que la mayor).

La segunda ecuación se traduce a x-30 =z. Si reemplazamos todo en la primera ecuación obtenemos

x+(x-26)+(x-30) = 127

Obtenemos la ecuación

3x-56 = 127

Sumando 56 a ambos lados y dividiendo por 3, obtenemos

x = \frac{127+56}{3} = 61

Es decir la mayor tiene 61 años.

6 0
3 years ago
Solving One Step Equations. SHOW YOUR WORK <br> 16 = k/12 solve to find k
Karo-lina-s [1.5K]
I believe the the answer is k=192 if i am wrong I am very sorry

6 0
3 years ago
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Identify the common difference in the arithmetic sequence: 21, 15, 9, 3, -3, ...
Verizon [17]

Answer:

the common difference in the arithmetic sequence: 21, 15, 9, 3, -3, ... is 6

7 0
3 years ago
Mrs. Bentiez earns $3,400 every month. She spends 25% of her earnings on rent and saves 12% on food, she saves the rest of her m
Genrish500 [490]

Answer:

$2244

Step-by-step explanation:

4 0
3 years ago
A cube has a surface area of 9,600 square meters. Find the volume of the cube.<br> please help :)
erastovalidia [21]

Answer:

V_{cube}  =  64,000 \:  {m}^{3}

Step-by-step explanation:

Surface area of cube

= 6 {a}^{2}  \\ (where \: a = side \: length \:  of \: cube) \\  \\  \therefore \: 9600 = 6 {a}^{2}  \\  \\  \frac{9600}{6}  =  {a}^{2}  \\  \\ 1600 = {a}^{2}  \\  \\ a =  \sqrt{1600}  \\  \\ a = 40 \: m \\  \\V_{cube}  =  {a}^{3}   \\  \\ V_{cube}  =  {(40)}^{3}   \\  \\ V_{cube}  =  64,000 \:  {m}^{3}

8 0
3 years ago
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