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3 years ago

I bed help with these two

Mathematics

2 answers:

Veseljchak [2.6K]3 years ago

8 0

21.5 is the first ine

frozen [14]3 years ago

5 0

Well if each band needs 15.5 inches and she needs to make 12 headbands she needs 15.5 inches 12 times. Now you can add 15.5 + 15.5 +15.5 (so on) 12 times or you can do it the easier way and do 15.5 times 12. this comes out to 186 inches of ribbon. She estimated 160 inches of ribbon, this is unreasonable because it is significantly less that 186.

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Can someone know this asap

timurjin [86]

5) 2x+3
6) x-3
7) (x+5)/2

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3 years ago

How do you estimate 358 divided by 3 using compatible numbers

Juli2301 [7.4K]

Well, if you want and estimate round 358 up to 360 and divide it by 3 and your answer is 120. I hope that helps. Plz give me 5 stars

6 0

3 years ago

Plz help me I will mark brainlest whoever answers with explanation

levacccp [35]

Answer:

1. 3

2. -2.5+3= .5

3. <__________________>

-5 -4 -3 -2 -1 0 1 2 3 4 5

^ ^ ^

Step-by-step explanation:

When you add 3 to -2.5, the result is a positive .5. I wasn't sure what the number line meant, so I did my best

7 0

3 years ago

g On any day, the probability of rain is 0.3. The occurrence of rain on any day is independent of the occurrence of rain on any

Ksju [112]

Answer:

0.249579

Step-by-step explanation:

P(rain) = 0.3

P(no rain) = 1 - 0.3 = 0.7

The event of rain falling a second time within the next 5 days is possible in these ways

1. Rain on days 1 and 2

2. Rain on days 1 and 3; none on day 2

3. Rain on days 1 and 4; none on days 2 and 3

4. Rain on days 1 and 5; none on days 2, 3 and 4

5. Rain on days 1 and 6; none on day 2, 3, 4 and 5

$P(\text{second rain within 5 days}) = 0.3^2+0.3^2\times0.7+0.3^2\times0.7^2+0.3^2\times0.7^3+0.3^2\times0.7^4 = 0.3^2(1+0.7+0.7^2+0.7^3+0.7^4)= 0.09\times2.7731=0.249579$

5 0

4 years ago

<img src="https://tex.z-dn.net/?f=1%2F2x%5E3%20%2B%20x%20-7%20%3D%20-3%5Csqrt%7Bx%7D%20%20-1" id="TexFormula1" title="1/2x^3 + x

Margaret [11]

Answer:

none of the above

Step-by-step explanation:

The problem as written cannot have any of the solutions offered.

For any of those choices, the right side expression will be irrational. The left side expression will be rational for any rational value of x, so cannot be equal to the right-side expression.

The solution is an irrational number near ...

x ≈ 1.33682898582

5 0

3 years ago