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2 years ago

3 consecutive multiples of 7 are 777

Mathematics

2 answers:

jasenka [17]2 years ago

4 0

Answer:

252, 259 and 266

Step-by-step explanation:

Multiples of a number are those numbers that are divisible by that. Like if x and y are any two numbers then if y is a multiple of x then the remainder should be equal to zero when x is divided from y.

Y_Kistochka [10]2 years ago

3 0

Answer:

Three consecutive multiples of 7 whose sum is equal to 777 are 252, 259 and 266.

<em>Please click above answer.</em>

Please do 3 brainliests because I need.

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What is the decay factor in the exponential decay function y=a (1-r) t

MrRissso [65]

Answer:

in this form, the "-r" would cause the result to decrease

I assume that the answer is "r"

if r = .1 (10 %) then 1-.1 = .9

if you have 100 items then y = 100(.9)^1 = 90

the total decreased by 10% ... y = 100(.9)^2 after 2 time periods

Step-by-step explanation:

5 0

2 years ago

How can i get my answer for 5+(-34)

julia-pushkina [17]

Hello there.

Answer: ⇒⇒⇒⇒-29

Step-by-step explanation:

Remove parenthesis.

$5-34$

Subtract the numbers.

$5-34=-29$

Hope this helps!

Thank you for posting your question at here on brainly.

-Charlie

4 0

2 years ago

Newton's law of cooling is:

Mnenie [13.5K]

Answer:

$t = \frac{ln(\frac{21}{59})}{-0.15}=6.887 hr$

So it would takes approximately 6.9 hours to reach 32 F.

Step-by-step explanation:

For this case we have the following differential equationÑ

$\frac{du}{dt}= -k (u-T)$

We can reorder the expression like this:

$\frac{du}{u-T} = -k dt$

We can use the substitution $w = u-T$ and $dw =du$ so then we have:

$\frac{dw}{w} =-k dt$

IF we integrate both sides we got:

$ln |w| = -kt +C$

If we apply exponential in both sides we got:

$w = e^{-kt} *e^c$

And if we replace w = u-T we got:

$u(t)= T + C_1 e^{-kt}$

We can also express the solution in the following terms:

$u(t) = (T_i -T_{amb}) e^{kt} +T_{amb}$

For this case we know that $k =-0.15 hr$ since w ehave a cooloing, $T_{i}= 70 F, T_{amb}=11F$ , we have this model:

$u(t) = (70-11) e^{-0.15t} +11$

And if we want that the temperature would be 32F we can solve for t like this:

$32 = 59 e^{-0.15 t} +11$

$21=59 e^{-0.15 t}$

$\frac{21}{59} = e^{-0.15 t}$

If we apply natural logs on both sides we got:

$ln (\frac{21}{59}) =-0.15 t$

$t = \frac{ln(\frac{21}{59})}{-0.15}=6.887 hr$

So it would takes approximately 6.9 hours to reach 32 F.

7 0

3 years ago

Determine the approximate measure of Y.

Soloha48 [4]

Answer:

I took the test, Its B) 41.1

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3 years ago

What is the turning point of the graph of f(x) = |x| + 4 ?

leva [86]

F(x) = |x| + 4

f(0) = I 0 I + 4===> (0,4)

f(0) = - 0 +4 ===> (0,4)

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2 years ago