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3 years ago

15 pts. pls help on all 4

Mathematics

1 answer:

umka21 [38]3 years ago

5 0

10.) x+25=30

x=5

11.) 60=3x-12

72=3x

x=72/3

x=24

12.) <1+<2=90

<1+17=90

<1=90-17

m <1=73 degrees

13.) m <3+m <4=180

46+m <4=180

180-46=m<4

134=m<4

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3 years ago

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3 years ago

How can (1/2)x-5=(1/3)x+6 be set up as a system of equations?

leonid [27]

Answer:

2y-x=-10
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Step-by-step explanation:

Set each side of the equation equal to y, then rearrange to standard form.

(1/2)x -5 = y . . . left side of the equal sign

x -10 = 2y . . . . multiply by 2

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3 years ago

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AleksAgata [21]

Answer:

Step-by-step explanation:

angles add up to 360

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3 years ago

3. A jet traveled at an average speed of 681 kilometers an hour. At that rate, how far did the jet go in 7 1/4 hours?

Burka [1]

$\stackrel{mixed}{7\frac{1}{4}}\implies \cfrac{7\cdot 4+1}{4}\implies \stackrel{improper}{\cfrac{29}{4}} \\\\[-0.35em] ~\dotfill\\\\ \begin{array}{ccll} K ms&hours\\ \cline{1-2} 681 & 1\\ x& \frac{29}{4} \end{array} \implies \cfrac{681}{x}=\cfrac{1}{~~ \frac{29}{4}~~}\implies \cfrac{684}{x}=\cfrac{4}{29} \\\\\\ 19836=4x\implies \cfrac{19836}{4}=x\implies 4959=x$

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3 years ago

15 pts. pls help on all 4​

15 pts. pls help on all 4