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Paraphin [41]
3 years ago
5

X has up to four solutions

Mathematics
1 answer:
castortr0y [4]3 years ago
6 0
Answers: 3pi/2, pi/2, pi/6, 5pi/6

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Water has a specific heat of 4.184 J/g°C and requires 23,000 J of heat to raise the
nasty-shy [4]

Answer:

m=80.840 kg

Step-by-step explanation:

Given Data,

Q=23000 J

c=4.184 J/g °c

Δt= 68 °c

m=?

By using this equation,

Q=mcΔt

23000=m\times 4.184\times 68\\\\m=\frac{23000}{4.184\times68} \\\\\\m=80.840 kg

3 0
2 years ago
4a²-8ab+4b=???????????? ​
GuDViN [60]

Step-by-step explanation:

4a² - 8ab + 4b²

= (2a)² - 2 * 2a * 2b + (2b) ²

= (2a - 2b) ²

Hope it helps :)

3 0
3 years ago
A cylinder and a cone have the same base and height. The cylinder can hold about 4,712 mc015-1.jpg of sand. Jared says that the
exis [7]
The correct answer is C. So, lets go first to the equations that determine the volume of these solids. For the cylinder, that is simple; pi*r*r*h where r is the radius, h is the height and pi is the constant 3.14. For the cone, it is not easy to derive but one gets that the formula is:\frac{ \pi*r^2*h}{3}.

We notice thus that V_{cyl}=\pi*r^2*h=3V_{cone}. That holds irrespective of their radius or height; we only need to know that the heights and radii of the two objects are the same. Now, we have thus that:
\frac{V_{Cyl}}{V_{Cone} } =1/3.

We can check if this holds for Jared's statement; 1178/4712=0.25=1/4. So, it does not hold and thus Jared's statement is incorrect.
6 0
3 years ago
Read 2 more answers
motel clerk counts his $1 and $10 bills at the end of a day. He finds that he has a total of 57 bills having a combined monetary
madreJ [45]
You can use a matrix equation to discover that the motel clerk has 45 $1 bills and 12 $10 bills.
4 0
3 years ago
A 3. On a recent shopping trip, you see a sale advertising 4 pairs of socks and 3 pairs of shoes for $90. Write an equation usin
Mamont248 [21]
The correct answer is D) 4x + 3y = 90.

x = pairs of socks
y = pairs of shoes
90 = total cost of the sum of socks and shoes

Combining these with the given quantities for each variable:

4x + 3y = 90
6 0
2 years ago
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