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insens350 [35]
3 years ago
12

when you went to school the temperature was -4.5 degrees it felt another 6.25 degrees and then it Rose 3.5 degrees what is the t

emperature at the end of the day​
Mathematics
1 answer:
Pachacha [2.7K]3 years ago
3 0

Answer:

-7.25 degrees

Step-by-step explanation:

First: -4.5 - 6.25 = -10.75

Last, add 3.5 to - 10.75 (You can subtract 3.5 from 10.75 and add a negative to your answer.) = -7. 25 degrees

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lara [203]
She had both on May 5

swimming lessons every 5th day
5,10,15,20

diving lessons every 3rd day...
3,6,9,12,15

so they both have a common multiple of 15

so fifteen days after May 5 = May 20 <==
8 0
4 years ago
Read 2 more answers
Can you see an easy way to work out the value of <img src="https://tex.z-dn.net/?f=%5Csqrt%7B%201%5E3%20%2B%202%5E3%20%2B%203%5E
Lina20 [59]

We have the sum of cubes identity

a^3 + b^3 = (a + b) (a^2 - ab + b^2)

and observing that 1 + 4 = 2 + 3, we have

1^3 + 4^3 = (1 + 4) (1^2 - 4 + 4^2) = 5 \times 13

and

2^3 + 3^3 = (2 + 3) (2^2 - 6 + 3^2) = 5 \times 7

Then

\sqrt{1^3+2^3+3^3+4^3+5^3} = \sqrt{5\times13 + 5\times7 + 5\times5^2} = \sqrt{5 \times (20 + 25)} \\\\ ~~~~~~~~ = \sqrt{5^2 \times (4 + 5)} = \sqrt{5^2\times9} = \sqrt{5^2\times3^2} = 5\times3 = \boxed{15}

Alternatively, we have the well-known sum of cubes formula

\displaystyle \sum_{i=1}^n i^3 = \frac{n^2(n+1)^2}4

The sum under the square root is this sum with n=5. Then

1^3+2^3+3^3+4^3+5^3 = \dfrac{5^2\times6^2}4 = 225 = 15^2

and so the square root again reduces to 15.

5 0
2 years ago
I added 7 to a certain number. i double the result. my final answer is 34. what was my number
Burka [1]

Answer:

10

Step-by-step explanation:

Put this into an equation. Solve for x. X is that certain number.


2( x + 7) = 34

5 0
2 years ago
Hector spend $33.75 for 2 DVD that cost the same amount. The sales tax on his purchase was $3.15. Hector also used a coupon for
Makovka662 [10]

Answer:

15.8 dollars per dvd.

Step-by-step explanation:

<em>Our equation for this problem is:</em>

<em />

<em>v = how much one dvd costs</em>

<em />

<em>2v + 3.15 - 1 = 33.75</em>

<em>2v +3.15 =34.75 (added 1 on both sides)</em>

<em>2v = 31.6 (subtracted 3.15 from both sides)</em>

<em>v = 15.6 (divided by 2 on both sides) </em>

<em />

7 0
2 years ago
Is this simplest radical form?<br>is this simplest radical form <br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B220%7D%20" id
inessss [21]
Sqrt(220)= sqrt(2•2•5•11)=2 sqrt (5•11)=
2 sqrt(55)
So no the radical was not in it’s simplest form
5 0
4 years ago
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