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4 years ago

This is a similar shape question.

Mathematics

2 answers:

Veronika [31]4 years ago

7 0

Answer:

25600^2

Step-by-step explanation:

i dont know working out i had this question ages ago and this was the answer

Vinil7 [7]4 years ago

4 0

The ratio of the Total surface area
is squared from the scale factor ratio.

So square root the total surface area ratio
1/2

So to get the ratio for volume, it’s cubed
Hence,
1/8

So 1/8 * 3200 = 400

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I really need help before tomorrow!! Please help me!!

Pavel [41]

Answer:

the answer is 6

Step-by-step explanation:

you take the absolute value for both of them which is 2 and 8 but you keep the negative still so it would be -2+8 which is 6

8 0

4 years ago

Read 2 more answers

Simplify this expression: cos theta/ tan theta cot theta

Dmitry_Shevchenko [17]

Q: $\frac{cos\theta}{tan\theta.cot\theta}=?$

A:

$\frac{cos\theta}{tan\theta.cot\theta}=cos\theta$

because... $tan\theta.cot\theta=1$
*********************************************************
Q: $\frac{cos\theta}{tan\theta}.cot\theta=?$

A:

$\frac{cos\theta}{tan\theta}.cot\theta&= \\ \\ \frac{cos\theta}{\frac{sin\theta}{cos\theta}}.\frac{cos\theta}{sin\theta}&= \\ \\ \frac{cos^2\theta}{sin\theta}}.\frac{cos\theta}{sin\theta}&= \\ \\ \frac{cos^3\theta}{sin^2\theta}}&= cos^3\theta.cosec^2\theta$

5 0

4 years ago

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. What is the resulting expression?

siniylev [52]

Factoring the polynomial $4x^4-20x^2-3x^2 + 15$ by grouping means separation of the polynomial in two addends, each of them consists of two addends:

$4x^4-20x^2-3x^2 + 15=(4x^4-20x^2)+(-3x^2+15).$

In first brackets the common factor is $4x^2,$ in second brackets the common factor is $-3.$

Then

$(4x^4-20x^2)+(-3x^2+15)=4x^2(x^2-5)-3(x^2-5)=(x^2-5)(4x^2-3).$

Answer: correct choice is B

7 0

4 years ago

Read 2 more answers

What is the excluded value? y2-y+5/y+4

WITCHER [35]

The given term is: $\frac{ y^{2}-y+5 }{y+4}$

Since here, the numerator i.e. $y^{2}-y+5$ cannot be factorized.

SO, the only excluded value is found on the basis of the denominator. The denominator should not be equal to 0, otherwise, the fraction will turn out to be zero.
SO, if y $\neq$ -4, then denominator will not be zero.
Therefore, the excluded value is -4

5 0

3 years ago

Read 2 more answers

A plane flies from Springville to Brockton and then back to Springville. When there is no wind, the round trip takes 6 hours and

ch4aika [34]

Answer:

Step-by-step explanation:

Let x represent the speed of the plane in still air.

When there is no wind, the round trip takes 6 hours and 24 minutes. Converting to hours, it becomes

6 + 24/60 = 6 + 0.4 = 6.4 hours

Distance = speed × time

Distance of the round trip = 6.4x

But when there is a wind blowing from Springville to Brockton at 50 miles per hour, the trip takes 6 hours and 40 minutes. Converting 6 hours and 40 minutes, it becomes

6 + 40/60 = 6 2/3 = 20/3 hours

The total speed would be

(x - 50)miles per hour

Distance covered = 20/3(x - 50)

Therefore, since both round trips are the same distance, then,

6.4x = 20/3(x - 50)

Cross multiplying by 3, it becomes

19.2x = 20(x - 50)

19.2x = 20x - 1000

20x - 19.2x = 1000

0.8x = 1000

x = 1000/0.8 = 1250 mph

Distance covered on the round trip is

6.4x = 6 × 1250 = 7500 miles

Therefore, the distance from Springville to Brockton is

7500/2 = 3750 miles

7 0

3 years ago