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Norma-Jean [14]
3 years ago
13

At a middle school the ratio of 7th graders to 8th graders is 4:5. If there are 270 7th and 8th graders, how many 8th graders ar

e there?
Mathematics
2 answers:
inessss [21]3 years ago
7 0

Answer:

I think it's 337 or 338

Step-by-step explanation:

you divide the number of 7th graders by the radio to 8th graders and multiply it by the radio of 8th graders to 7tg graders.

serious [3.7K]3 years ago
4 0
337 is the answer to your question
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Hey can I have some help with this I am very confused
aniked [119]

#a

m<5=40°

  • Reason-Its Given

#b

m<2=140

  • Reason-Given

#c

<5 and <2 are linear pair(looked properly in diagram) Hence they are supplementary.

#d

<5 and 2 are same side interior angles (Clearly shown on diagram .

  • We can call them co responding interior angles and their sum will be 180 if lines are parallel

#e

a||b

Let's verify

Let the angle below <1 be <3

Now

<2+<3=180

<5+<4=180

  • <5=<2

\\ \sf\longmapsto

Hence verified

4 0
3 years ago
4) Solve Ax + By = C, for y
irina1246 [14]

Answer:Ax + By = C

-ax -ax

-------------------

By = -Ax + C

--- ------------

B B

--------------------

y = -Ax + C

----------

B

Step-by-step explanation:

4 0
3 years ago
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How do I figure out order of operation?
Ilia_Sergeevich [38]


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5 0
4 years ago
BRAINLIEST!
skad [1K]

Answer:

B

Step-by-step explanation:

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8 0
3 years ago
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Let R be a relation on the set of all lines in a plane defined by (l 1 , l 2 ) R line l 1 is parallel to l 2 . Show that R is
MArishka [77]

Answer: hello your question is poorly written below is the complete question

Let L be the set of all lines in XY plane and R be the relation in L defined as R = {(L1, L2): L1 is parallel to L2}. Show that R is an equivalence relation. Find the set of all lines related to the line y = 2x + 4.

answer:

a ) R is equivalence

b) y = 2x + C

Step-by-step explanation:

<u>a) Prove that R is an equivalence relation </u>

Every line is seen to be parallel to itself ( i.e. reflexive ) also

L1 is parallel to L2 and L2 is as well parallel to L1 ( i.e. symmetric ) also

If we presume L1 is parallel to L2 and L2 is also parallel to L3 hence we can also conclude that L1 is parallel to L3 as well ( i.e. transitive )

with these conditions we can conclude that ; R is equivalence

<u>b) show the set of all lines related to y = 2x + 4 </u>

The set of all line that is related to y = 2x + 4

y = 2x + C

because parallel lines have the same slopes.

5 0
3 years ago
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