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neonofarm [45]
3 years ago
9

Why do you cross-multiply when you solve proportions?

Mathematics
1 answer:
Llana [10]3 years ago
5 0

Answer:  The reason you cross multiply fractions is to compare them. Cross multiplying fractions tells us if the two fractions are equal or which one is greater. This is especially useful when you are working with larger fractions that you aren't sure how to reduce.

It works cause they have the same denominator

bruh

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Plz help me i need it!
Anon25 [30]

Answer:

The answer is G, 24 1/2

Step-by-step explanation:

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3 years ago
Monster Multiplication Masters
klemol [59]

Answer:

1.) 20,160 cookies, 2.) 37,600 Letters to students in a different country 3.) 252.36 Exact form, Approximate form: 252

Step-by-step explanation:

The first question is written in standard form like this:

Standard Form: 315 x 64 = 20,160

Algebraically/Logical: 315 Packages x 64 Cookies = 20,160 Cookies in All

Therefore, Kenneth bought 20,160 Cookies

The second question is written like this:

Standard Form: 940 x 40 = 37,600

Algebraically/Logical Reasoning: 940 students x 40 letters = 37,600 letters written to students in a different country.

Note: This question has a random P 240, That will be erased so that is why the equation is 940 x 40

The third question is written like this:

Standard Form: 36 x 7.01 = 252.36

Approximate form: 36 x 7 = 252

Algebraically/Logical Reasoning: The standard form would explain it all but if I was answering this question I would round 7.01 to the one's place because there is no way you would get a decimal when trying to solve an even amount of cloths. So there are 36 squares in one table cloth, times that by 7 which is equal to 252 approximently.

7 0
3 years ago
HELP IM TIME
ElenaW [278]
Explanation:
We already have phone A 5.3 cm
We just need to find phone B

First we need to find what one-third is as a decimal

Which is 0.3

Now add 0.3 to 5

0.3 + 5 = 5.3

Answer: neither phone a and Phone be 05.3 cm
6 0
3 years ago
Read 2 more answers
Theorem: The segment joining the midpoints of two sides of a triangle is parallel to the third side and half its length.
Taya2010 [7]

Answer:

Segment DE is half the length of segment AC. -- Substitution property of equality

Step-by-step explanation:

Here is given a proof for proving line joining mid segment is parallel and half the length of third side.

Stepwise proof is given in two columns

We find that for every line there is a justification as

STatement                                        Justification

D and E coordinates found out       MId point formula

DE and BC are measured                Distance formula

DE=1/2 BC                                          Substitution property of equality

This justification was missing in the given proof and with this included proof would be complete

4 0
3 years ago
Read 2 more answers
Among two supplementary angles the measure of the larger angle is 400 more than the
pogonyaev

9514 1404 393

Answer:

  70° and 110°

Step-by-step explanation:

The sum of angles is 180°; their difference is 40°. So, the larger is ...

  (180° +40°)/2 = 110°

The smaller is 180° -110° = 70°

The two angles are 70° and 110°.

_____

Above, we have "cut to the chase." If you let the larger be 'a' and 's' and 'd' represent the sum and difference, you have ...

  a + (a-d) = s . . . . the sum of the larger and smaller angles

  2a = s+d . . . . . .  add d

  a = (s+d)/2 . . . . the relation we used.

4 0
3 years ago
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