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Papessa [141]
2 years ago
7

The value of y varies directly with x, and when x = y = 25. What is the value of

Mathematics
1 answer:
kipiarov [429]2 years ago
6 0

Answer:

A 233.3 or 233 1/3

Step-by-step explanation:

X =1/4

Y =25

1/4 X 100= 25

2 1/3 X 100= 233.3

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Old McDonald has some chickens and some cows. He counted 56 heads and 116 legs. How many chickens and how many cows does old McD
Elza [17]

Answer: old McDonald has 54 chickens and 2 cows.

Step-by-step explanation:

Let x represent the number of chickens that old McDonald have.

Let y represent the number of cows that old McDonald have.

He counted 56 heads. A chicken and a cow has one head each. It means that

x + y = 56

He counted 116 legs. A chicken has 2 legs and a cow has 4 legs. It means that

2x + 4y = 116 - - - - - - - - -1

Substituting x = 56 - y into equation 1, it becomes

2(56 - y) + 4y = 116

112 - 2y + 4y = 116

- 2y + 4y = 116 - 112

2y = 4

y = 4/2 = 2

x = 56 - y = 56 - 2

x = 54

6 0
3 years ago
Explain how to solve angle relationship problems
Nataly_w [17]

Answer:


Step-by-step explanation: Identify the angle relationships, set up the equation that will yield the unknown value, solve the equation for the unknown value, substitute the answer to determine the measurement of the angles then, check and verify your answer by measuring the angle with a protractor.


4 0
3 years ago
The first three terms in the binomial expansion of (a+b)^n in ascending powers of b, are p,q and r respectively. show that q^2/p
katen-ka-za [31]

First 3 terms are a^2 + n a^(n-)1 b + n(n-1)/2 * a^(n-2) b^2


So q^2 / pr = (n^2 * a^(2n-2) * b^2 ) / (1/2 * a^n * (n(n-1) * a^(n-2) * b^2 )


= n^2 * a^2n-2 * b^2

-----------------------------------

1/2 n(n-1) * a^(2n-2) * b^2


= 2n / n - 1 as required


given p = 4, q=32 and r = 96:-


32^2 / 4*96 = 2n / n-1

2n / n-1 = 8/3

6n = 8n - 8

2n = 8


n = 4 answer

7 0
2 years ago
Solve 2x+2&gt;10<br><br> A. x &lt; 4<br> B. x &gt; 4<br> C. x &gt; 6<br> D. x &lt; 6
ikadub [295]

Answer:

B

Step-by-step explanation:

2x+2>10

2x>10-2

x>8/2

x>4

7 0
3 years ago
Holii necesito ayuda lo más rápido posible x fiiiis
Archy [21]

Usando proporciones, en conjunto con multiplicación cruzada, encontra-se que el valor de p es de 6.

<h3>¿Qué es una proporción?</h3>

Una proporción es una fracción de la cantidad total, e puede ser encontrada aplicando una regla de três.

En este problema, relación es dada por:

\frac{p}{p+2} = \frac{6}{8}

Aplicando multiplicación cruzada:

8p = 6(p + 2)

8p = 6p + 12

2p = 12

p = 12/2

p = 6.

Puede-se aprender más a cerca de proporciones en brainly.com/question/24615636

#SPJ1

8 0
1 year ago
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