Step-by-step explanation:
In Question it's given Double a number, increased by 15, is 49.
Let the number be x
According to question -
2x + 15 = 49
When solving this -
2x = 49 - 15
x = 34/2
x = 17.
<u>Here the number is 17.</u>
<u>Translation / Tradução</u>
Em questão, o número duplo, aumentado em 15, é 49.
Seja o número x
De acordo com a pergunta -
2x + 15 = 49
Ao resolver isso -
2x = 49 - 15
x = 34/2
x = 17.
<u>Aqui o número é 17.</u>
Answer:
c
Step-by-step explanation:
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Answer:
c. 30.9 °C; 32.9 °C
Step-by-step explanation:
Put the given numbers into the given formula and do the arithmetic.
(a) The temperature of sample 1 is ...
y = (100 -24)e^(-0.12·20) + 24 ≈ 30.9
___
(b) The temperature of sample 2 is ...
y = (100 -4)e^(-0.12·10) +4 ≈ 32.9
Answer:
17.82
Step-by-step explanation:
since this is a right triangle you can use one of the trigonometric ratios, in this case it would be cosine because you have values for the adjacent and hypotenuse sides
cos(27°) = x/20
x = 20 · cos(27°)
x = 17.82
Answer:
(d) WEAK NEGATIVE ASSOCIATION.
Step-by-step explanation:
Pearson correlation (r) is defined as a factor which measures the linear dependence between two variables (x and y). It's also known as a parametric correlation.
Here, r = -0.19
Now, as r is NEGATIVE.
⇒ As the value of x increases , value of y decreases.
⇒There is a NEGATIVE ASSOCIATION.
Now as the value of r is between 0 and ( -1). So the factor of variation is very small.
Hence, it is WEAK NEGATIVE ASSOCIATION.
