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3 years ago

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Jonathan is 5 years older than his brother Chase. The sum of Chase's age and three times Jonathan's age is 55. Which equations c

an be used to determine Chase's age, c?

2 answers:

ser-zykov [4K]3 years ago

8 0

Answer:

The answer is D.

Step-by-step explanation:

Johnathan is 5 years older (+5)

The sum of Chase's age is three times (x 3)

Johnathon's age is ( =55)

Therefore (3*c+5=55)

c= chase's age

Ivahew [28]3 years ago

4 0

Answer: The correct answer is D

Step-by-step explanation:

Jonathan is 5 year older is saying that he is + 5 years older. The sum of Chase's age and three time Jonathan's age is just 3c because 3c is just 3 times c and sum is another term for equals. You also don't know chase's age so that's why C is a variable for chase

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stiv31 [10]

This should be easy because we just have to use substitution method. Substitute the value of x from the second equation into the x of the first equation.
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4 years ago

If sinA+cosecA=3 find the value of sin2A+cosec2A

Irina18 [472]

Answer:

$\sin 2A + \csc 2A = 2.122$

Step-by-step explanation:

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Now we perform the operations: $f(A) = 3$

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Then, the values of the cosine associated with that angle is:

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$\sin 2A = 2\cdot \sin A\cdot \cos A$ (4)

$\csc 2A = \frac{1}{\sin 2A}$ (5)

$f(A) = \sin 2A + \csc 2A$

$f(A) = \sin 2A + \frac{1}{\sin 2A}$

$f(A) = \frac{\sin^{2} 2A+1}{\sin 2A}$

$f(A) = \frac{4\cdot \sin^{2}A\cdot \cos^{2}A+1}{2\cdot \sin A \cdot \cos A}$

If we know that $\sin A \approx 0.382$ and $\cos A \approx 0.924$ , then the value of the function is:

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3 years ago

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Elina [12.6K]

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OLga [1]

Answer:

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Step-by-step explanation:

Given that a marrow plants 0.5 m long and every week it grows by 20%, to find the value of the common ratio, calculate how long the plant is after 12 weeks and comment on the predicted length of the marrow after one year must be performed the following calculations:

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