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3 years ago

What is m ∠ ZUB? 23.7° 32.8° 33.5 57.2°

Mathematics

1 answer:

oee [108]3 years ago

3 0

Answer:

23 .7 ruim

57.2 sol

32 .8 mais ou menos

tchau bj

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Two grandparents want to pick up the mess that their granddaughter had made in her playroom. One can do it in 15 minutes working

Crank

Answer:

6 2/3 minutes

Step-by-step explanation:

Their rates in "jobs per hour" are ...

(60 min/h)/(15 min/job) = 4 jobs/h

and

(60 min/h)/(12 min/job) = 5 jobs/h

So, their combined rate is ...

(4 jobs/h) + (5 jobs/h) = 9 jobs/h

The time required (in minutes) is ...

(60 min/h)/(9 jobs/h) = (60/9) min = 6 2/3 min

Working together, it will take them 6 2/3 minutes.

5 0

4 years ago

Need explanation 20 points The function f is such that f(x) = 2x - 6 Find f^-1(x)

Dvinal [7]

HEYA! <3

Explanation :

GIVEN :

f(x) = 2x - 6

TO FIND :

Inverse of f(x) i.e $f ^{ - 1} (x)$

SOLUTION :

FOLLOW THESE THREE STEPS :

LET Y = f(x)

$\longrightarrow \tt{y = 2x - 6}$

$\longrightarrow{ \tt{ \: 2x - 6 = y}}$

MAKE X A SINGLE TERM IN LHS SIDE

$\longrightarrow{ \tt{2x = y + 6}}$

$\longrightarrow{ \tt{x = \frac{y + 6}{2} }}$

INTERCHANGE THE VALUE OF X AND Y

$\longrightarrow{ \tt{y = \frac{x + 6}{2} }}$

Hence ,

$\boxed{ \boxed{ {f}^{ - 1} (x) = \sf{ \bold{ \frac{x + 6}{2} }}}}$

Hope I helped!

Have a wonderful day / night !

Feel free to leave comments if you have any queries! :D

4 0

3 years ago

Would you please help me solve for x it should be a degrees but I’m not sure what it is

Leno4ka [110]

Answer:

x=15º

Step-by-step explanation:

A triangle's angles add up to 180º.

∠A=30º

∠C=180º-45º

∠B=xº

To find ∠B we have to first find ∠C.

Since ∠C does not have an angle, knowing that a straight line is 180º we can subtract it from 45º to find ∠C.

180-45=135

∠C=135º

Now add ∠A and ∠C.

30+135=165

Subtract the sum from 180º

180-165=x

x=15º

Hope this helps :)

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3 years ago

There are ten kids in a class. When any two meet, each says “hi” to the other and the answer “hi” follows. Before the class star

Klio2033 [76]

If every single student met one an another, then you would hear 90 hi's. Since there are 45 different combinations of 2 students meeting another, and since there are 2 hi's each meeting, there would be 90.

I hope that this helps.

Please rate me as Brainliest so I can rank up :D

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4 years ago

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Suppose you have two different linear equations. How would you tell if the lines represented are parallel, perpendicular, or nei

RoseWind [281]

Parallel never cross
perpendicular is a 90 degree angle
its neither if its not 90 degree or never crossing

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3 years ago