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damaskus [11]
3 years ago
5

SOMEONE PLS HELP ME DO ALL for 100 points and BRAINLIEST. Show your work!

Mathematics
1 answer:
IRINA_888 [86]3 years ago
7 0
For 6 plug in 6 in the first line and then 10 on the line to the eighth then you can solve from there for x which should give you 8
X=8 for number 6
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what will be the distance travelled at 5 seconds. PLEASE ANSWER IT I WILL MARK BRAINLIEST WHOEVER CAN ANSWER THIS PLEASE​
Oduvanchick [21]

Answer:

30 m

Step-by-step explanation:

3 0
3 years ago
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If anyone knows the answer please answer
gulaghasi [49]
90° (it's a right angle and if you see that square it will always be 90)
6 0
3 years ago
Petes boat can travel 48 miles upstream in 4 hours. The return trip takes 3 hours. Find the speed of the boat in still water and
tankabanditka [31]
So... hmm bear in mind, when the boat goes upstream, it goes against the stream, so, if the boat has speed rate of say "b", and the stream has a rate of "r", then the speed going up is b - r, the boat's rate minus the streams, because the stream is subtracting speed as it goes up

going downstream is a bit different, the stream speed is "added" to boat's
so the boat is really going faster, is going b + r

notice, the distance is the same, upstream as well as downstream
thus   \bf \begin{cases}
b=\textit{rate of the boat}\\
r=\textit{rate of the river}
\end{cases}\qquad thus
\\\\\\

\begin{array}{lccclll}
&distance&rate&time(hrs)\\
&----&----&----\\
upstream&48&b-r&4\\
downstream&48&b+4&3
\end{array}
\\\\\\

\begin{cases}
48=(b-r)(4)\to 48=4b-4r\\\\
\frac{48-4b}{-4}=r\\
--------------\\
48=(b+r)(3)\\
-----------------------------\\\\
thus\\\\
48=\left[ b+\left(\boxed{\frac{48-4b}{-4}}\right) \right] (3)
\end{cases}

solve for "r", to see what the stream's rate is

what about the boat's? well, just plug the value for "r" on either equation and solve for "b"
5 0
4 years ago
42 divided by (15-2 to the 3rd power) someone smart and fast help me! Please
Serhud [2]

Answer:

6

Step-by-step explanation:

Step 1: Multiplying  the power

2 x 2 x 2 = 8

Step 2: Subtracting:

15-8 = 7

Step 3: Dividing

42/7 = 6

Answer : 6

Hope this HELPED

BRAINLIEST IS MUCH APRECIATED

3 0
3 years ago
Read 2 more answers
In the cylinder below, the radius, r, is 5 m, and the volume is 200 m3. What is the altitude of the cylinder?
Margaret [11]

Answer:

D, 8 (I think)

Step-by-step explanation:

The formula for the volume of a cylinder is \pi r^2 h. Since you know the volume and the radius, you can set up the following formula:

200=\pi \cdot 5^2 \cdot h

h=\frac{8}{\pi}\approx 2.54. I know that is not one of the answer options, maybe the pi's didn't render here, and the answer is 8.Anyways, hope this helps!

5 0
3 years ago
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