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3 years ago

Is the number 8 odd or even?

1 answer:

6 0

Hello there!

The number 8 is an even number, since it can be divided evenly by the number of 2.

Hope this helps and have a great day! :)

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What is the solution to the equation

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$\sqrt{4t+5}=3-\sqrt{t+5}\\\\D:4t+5\geq0\ \wedge\ t+5\geq0\ \wedge\ \sqrt{t+5}\leq3\\\\t\geq-\dfrac{5}{4}\ \wedge\ t\geq-5\ \wedge\ t\leq6$

therefore
$D:x\in\left< -\dfrac{5}{4};\ 6\right>$

$\sqrt{4t+5}=3-\sqrt{t+5}\ \ \ |^2\\\\(\sqrt{4t+5})^2=(3-\sqrt{t+5})^2\ \ \ |use:(a-b)^2=a^2-2ab+b^2\\\\4t+5=3^2-2\cdot3\cdot\sqrt{t+5}+(\sqrt{t+5})^2\\\\4t+5=9-6\sqrt{t+5}+t+5\ \ \ \ |-t\\\\3t+5=14-6\sqrt{t+5}\ \ \ \ |-14\\\\3t-9=-6\sqrt{t+5}\ \ \ \ |change\ signs$
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Answer: t = -1.

7 0

3 years ago

Read 2 more answers

I asked more than 10 times Still no steps to a solution

Alisiya [41]

Answer:

C 200

Step-by-step explanation:

It does not appear to be LINEAR so

Start with :

pulse rate = y = 73e^kx

sub in x = .7 when y = 155

155 = 73 e^(.7 * k)

ln ( 155/73) = .7k

.75296567 = .7k

k = 1.07567

for x = 0.9 :

pulse rate = y = 73 e^(1.07567 * .9) = ~ 192 so I expect answer is 200

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2 years ago