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3 years ago

Enter an algebraic equation for the sentence. Use x as your variable.

Mathematics

1 answer:

Studentka2010 [4]3 years ago

6 0

Answer:

Step-by-step explanation:

Represent the number by x. Then:

9x - 4 = 23

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There are 75 people in a room. Of these people, 2/5 are from Germany. If 4/9 of the people who are not from Germany are from Fra

Alex Ar [27]

Answer:

25 people are not from Germany or France.

Step-by-step explanation:

1. You first want find out what is the number of people from Germany.

So you would find...

2/5 of 75

2/5*75= 30 people from Germany

2. Next you want to to find out the number of people from France.

So you would do the following...

75-30=45 (Subtract the number of people from Germany from 75 so you can get the total number of people from France and other countries)

4/9 of 45 to find the number of people from France.

4/9 *45= 20

3. Lastly you need to find the people who are from neither of the countries listed above.

Add 30+20= 50

Then subtract that number from 75.

75-50= 25 people who are from neither France or Germany.

Voila! This is your answer. Hope this helps! :)

7 0

3 years ago

-3x + 4y = 12; 3x - 5y = 18<br> Solve

viktelen [127]

X = -44
y = -30

Solve for y in equation 1.
Plug in the new value for y into equation 2 to solve for x.
Next, plug your x value into either equation to find y. You can choose either, but I picked the 1st equation.

Check out pic!

3 0

3 years ago

Can someone please help me and explain. This is on my quiz today and she didn't explain

butalik [34]

Answer:

rtywegfyewrtqwiuy327iyrsidujkfhuer

Step-by-step explanation:

4 0

2 years ago

1/4 divided by 1/9<br> Plzzz help meeeeeeeeeeeeeeee

ivann1987 [24]

Answer:

1/4÷1/9=1/4×9/1

=9/4

=1 1/4

8 0

2 years ago

39. Find the length of each arc shown in red. Leave your answer in simplified radical form.

andre [41]

Answer:

The length of the arc shown in red is $\frac{22}{9}\pi\ in$

Step-by-step explanation:

step 1

Find the circumference of the circle

The circumference is equal to

$C=2\pi r$

we have

$r=4\ in$

substitute

$C=2\pi (4)$

$C=8\pi\ in$

step 2

Find the length of the arc in red

Remember that the length of the circumference subtends a central angle of 360 degrees

by proportion find the length of the arc by a central angle of 110 degrees

$\frac{8\pi}{360}=\frac{x}{110}\\ \\x=8\pi*110/360\\ \\x=\frac{880}{360}\pi\ in$

Simplify

$\frac{880}{360}\pi=\frac{22}{9}\pi\ in$

6 0

3 years ago