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True [87]
3 years ago
5

31.8÷3I know that 31.8÷3 equal 10.6 but why​

Mathematics
2 answers:
Akimi4 [234]3 years ago
7 0

Answer:

Through long-division, I'll upload an image

Step-by-step explanation:

yKpoI14uk [10]3 years ago
3 0

Answer: The answer’s in the picture

Step-by-step explanation:

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Joey answered 21 out of 25 questions correctly on a quiz what percent of his answers were correct
DedPeter [7]

Answer:

84%

Step-by-step explanation:

Joey gives 21 correct answers out of 25 questions on a quiz.

We have to calculate the percent of Joey's correct answer.

Now, percentage of x out of y is given by the simple expression \frac{x}{y} \times 100%.

Hence, the percentage of correct answer given by Joey is given by  

\frac{21}{25} \times 100 = 84%. ( Answer )

8 0
3 years ago
If L is parallel to M find value of each missing variable.
amid [387]
Answer:

x=24 y=15



mark as brainliest
hope it helps, have a great day!
8 0
3 years ago
Help please........................
yawa3891 [41]
A dilation means that a shape is expanded or shrunk by a scale factor. The scale factor is 4, so all the points are multiplied by 4 to reflect this expansion.

A reflection over the y-axis means that the y-values in the points change their sign from positive to negative, and vice versa.

Therefore, the points will become the following:
A''(12,-12), B''(-4, -12), C''(-16,-4), D''(0, -4)

This new shape will be similar to the original shape, since it shares the same shape, but not the same size.

The answer is A.
7 0
4 years ago
Solve the initial value problem
tigry1 [53]

9(t+1)\dfrac{\mathrm dy}{\mathrm dt}-7y=14t\implies\dfrac{\mathrm dy}{\mathrm dt}-\dfrac7{9(t+1)}y=\dfrac{14t}{9(t+1)}

Look for an integrating factor \mu(t):

\ln\mu=\displaystyle-\frac79\int\frac{\mathrm dt}{t+1}=-\frac79\ln(t+1)\implies\mu=(t+1)^{-7/9}

Multiply both sides by \mu:

(t+1)^{-7/9}\dfrac{\mathrm dy}{\mathrm dt}-\dfrac79(t+1)^{-16/9}y=\dfrac{14}9t(t+1)^{-16/9}

Condense the left side as the derivative of a product:

\dfrac{\mathrm d}{\mathrm dt}\left[(t+1)^{-7/9}y\right]=\dfrac{14}9t(t+1)^{-16/9}

Integrate both sides:

(t+1)^{-7/9}y=\displaystyle\frac{14}9\int t(t+1)^{-16/9}\,\mathrm dt

For the integral on the right, substitute

u=t+1\implies t=u-1\implies\mathrm dt=\mathrm du

\displaystyle\int t(t+1)^{-16/9}\,\mathrm dt=\int(u-1)u^{-16/9}\,\mathrm du

\displaystyle=\int\left(u^{-7/9}-u^{-16/9}\right)\,\mathrm du=\frac92u^{2/9}+\frac97u^{-7/9}+C

\implies(t+1)^{-7/9}y=\dfrac{14}9\left(\dfrac92(t+1)^{2/9}+\dfrac97(t+1)^{-7/9}+C\right)

\implies(t+1)^{-7/9}y=7(t+1)^{2/9}+2(t+1)^{-7/9}+C

\implies y=7(t+1)+2+C(t+1)^{7/9}=7t+9+C(t+1)^{7/9}

Given that y(0)=12, we get

12=9+C\implies C=3

\implies\boxed{y(t)=7t+9+3(t+1)^{7/9}}

6 0
3 years ago
Refer to the Newsela article "The Lakota Tribe Wants to Educate People Through Music Project."
faust18 [17]

Answer: part A

It was established with the intent to increase human connectivity.

part B

"The Lakota Music Project's focus remains on building bridges through music."

“Gier was eager to develop community programs, and he learned about tensions in his new community between Native and non-Native Americans.”

Step-by-step explanation: I took the test ok k12 sooo...

5 0
4 years ago
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