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arlik [135]
1 year ago
7

Write two conditionals A month has exactly 28 days if and only if it is February

Mathematics
1 answer:
Finger [1]1 year ago
5 0

Step 1

Let

A month has exactly 28 days (p)

it is February ​(q)

in the question we have

p\leftrightarrow q

Step 2

write 2 conditionals

p\rightarrow q

1. if p, then q 2. if q, then p

1.if a month has exactly 28 days, then it is February

2.if it is February, then a month has exactly 28 days

I hope this helps you

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Vance weighs 250 pounds and is losing 5 pounds each month. Phillip weighs 200 pounds
Lelu [443]

Answer:

250-5m=200+4m ; 5.56 months

Step-by-step explanation:

<u>Let's start this question by writing two expressions that depict the situation.</u>

Vance: 250-5m

This simply means that Vance currently weighs 250 pounds, and every month he is losing 5 pounds. (m=number of months)

Phillip: 200+4m

This is essentially the same thing. Phillips starting weight is 200, but here we use an addition sign because he is gaining 4 pounds every month as opposed to losing it.

To find the number of months it'll take for them to weigh the same, we just need to equate the values and solve for m.

<u>Our equation would then be:</u>

250-5m=200+4m

Let's solve the equation by bringing the variables to one side and the numbers to the other.

250-5m=200+4m

Subtract 4m from both sides

250-5m-4m=200+4m-4m

250-9m=200

Subtract 250 from both sides

250-250-9m=200-250

-9m=-50

Divide both sides by -9

m=5.556

So it will take about 5 months and a half to weigh the same.

3 0
2 years ago
If 2 &gt; -a, then _____. a &gt; 2 a &gt; -2 a &lt; 2 a &lt; -2
photoshop1234 [79]

Answer:

a > -2

Step-by-step explanation:

whenever we multiply, divide with "-" sign the inequality reverse its order

8 0
3 years ago
20) Explain what 25 ÷ 0.2 means
statuscvo [17]
It means 25 divided by 0.2

3 0
3 years ago
Read 2 more answers
Giselle a pendant on her necklace that is the shape of a regular hexagon. On the pendant, there are lines for the center of each
Nina [5.8K]

Answer:

The area of the pendant is <u>12 square centimeters</u>.

Step-by-step explanation:

<u><em>The question is incomplete, so the complete question is below:</em></u>

Giselle a pendant on her necklace that is the shape of a regular hexagon. On the pendant, there are lines for the center of each vertex that divided it into congruent triangles. Each triangle has an area of 2 square centimeters.

What\ is\ the\ area\ of\ the\ pendant?

Now, to get the area of pendant.

In the hexagonal pendant there are congruent triangles that are divided from the lines of the center of each vertex.

<u><em>Each triangle's area</em></u> = 2 square centimeters.

As, we see in the figure below there are six congruent triangles in the hexagonal pendant.

Hence, <u><em>the number of triangles</em></u> = 6.

So, to get the area of pendant we multiply each triangle's area by the number of triangles:

2\ cm^2\times 6\\\\=12\ cm^2.

Therefore, the area of the pendant is 12 square centimeters.

7 0
3 years ago
Help me please if you can
kodGreya [7K]

Answer:

brainly.com/question/19363018

Step-by-step explanation:

Try ur hardest and Brianly is not the best way to get awnsers quizlet is :) You welcome

ps. look it up thats the best way (:

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