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DiKsa [7]
3 years ago
10

What is the answer of 24-4m=6(7m-4)+2

Mathematics
2 answers:
otez555 [7]3 years ago
6 0
24-4m=42m-24+2
24+24-2=42m+4m
46=46m
m=1
AleksandrR [38]3 years ago
5 0
6[7m-4]=6*7m-6*4=42m-24+2=42m-22
collect like terms
-4m+42m=22-24
38m=-2
m=-2/38
m=-1/19
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Two trains are 210 miles apart, and their speeds differ by 17 mph. Find the speed of each train if they are traveling toward eac
Marizza181 [45]
V1 - velocity first train
v2 - velocity second train
v2 > v1

v2 - v1 = 17 mph

We know, that: 
s_1+s_2=210 \ [miles] \\ \\ t_1=t_2=2h

So:

v_1=\dfrac{s_1}{t_1}=\dfrac{s_1}{2} \\ \\ v_2=\dfrac{s_2}{t_2}=\dfrac{s_2}{2} \\ \\ \\ v_1+v_2= \dfrac{s_1}{2}+\dfrac{s_2}{2} \\ \\ v_1+v_2= \dfrac{s_1+s_2}{2} \\ \\  v_1+v_2= \dfrac{210}{2}=105

NOw we've got simple system of equations:

+\begin{cases} v_2-v_1=17 \\ v_2+v_1=105\end{cases} \\ \\ 2v_2=122 \qquad /:2 \\ \\ v_2=61 \qquad [mph] \\ \\ v_2-v_1=17 \\ \\ 61-v_1=17 \\ \\ v_1=44

Velocities of these trains are  61mph  and 44mph

3 0
3 years ago
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I put a picture<br><br> —PLEASE HELP
Karo-lina-s [1.5K]

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

Base of a cube is a square, and in the given figure it's stated that the measure of each side is " x " ft

Therefore it's Area is equal to : -

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Now, since it's Area is given as 1/4 ft², let's equate the Areas to find the measure of each side ~

that is ~

  • {x}^{2}  =  \dfrac{1}{4}

  • x =  \sqrt{ \dfrac{1}{2}  \times  \dfrac{1}{2} }

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It's time to find the volume of cube that is ~

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So, let's plug the value of side length (1/2 ft)

Volume is equal to ~

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Hence, the required 1/8 or 0.125 ft³

I hope it helped ~

\mathrm{✌TeeNForeveR✌}

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3 years ago
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the answer is (d) 57°

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<h2>Now,</h2>

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