only need help on 10!

Answer:

1788 grams

Step-by-step explanation:

If you start with 7,152 grams of a radioactive kind of lanthanum and the half-life is 93 minutes, how much will be left after 186 minutes

We are to find Nt

The formula is given as:

Nt = No(1/2)^t/t½

Where

No = Initial amount = 7,152 grams

t = time elapsed = 186 minutes

t½ = Half life = 93 minutes

Nt = Amount of substance left

Nt = 7152(1/2)^186/93

= 1788 grams

Answer:

A

Step-by-step explanation:

The scale factor can be defined as the ratio of new dimension of an object after scaling to the original  dimension. The are of the new circle is 49 times the area of the original circle. The correct answer is option C.

Scaling factor is a conversion factor used to change the size of a figure without changing its shape. When the size of a figure is increased, it called scaled up and when it decreases it is called as scaled down.

Given that, Scale factor of circle = 7.

Since, the scale factor of a circle is the ratio of new radius to original radius.

The new radius of circle can be written as,

r' = 7r

Thus, the area of new circle is π × (r')^2= π × (49r^2).

Hence, the area of new circle is 49 times the original circle.

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Answer:

you have to do 9/2 and then times that by twenty four. that will give you 108

then you do 3.14*108*108=36624.96

Step-by-step explanation:

Answer:

the answer is 63.62 for 1 circle then multiply by 24 which gets 1526.88

Step-by-step explanation:

Answer:

I believe the answer is 23.

Step-by-step explanation:

90-67=23

Answer:A

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Hope this helps.

Answer:

5 friends

Step-by-step explanation:

Answer: b

Step-by-step explanation:

Answer:

Could you post the question in the comments?

Step-by-step explanation:

Answer: 6.6

Step-by-step explanation:

Answer:

0.06 and 6/100

Step-by-step explanation:

Answer:

All four options are correct.

Step-by-step explanation:

Option 1

m∠DPQ = m∠FQB = 90° [Corresponding angles theorem]

By the converse property of corresponding angles theorem,

CD║EF

Since, angle between AB and CD is 90°,

AB⊥CD

True

Option 2

Since, angles between AB and EF is 90°, both will be perpendicular.

AB ⊥ EF

AB ⊥ CD

True

Option 3

CD║EF and AB ⊥ EF

True

Option 4

CD║EF, AB ⊥ CD and AB ⊥ EF

True

Therefore, all options are correct.

Answer:

2.82842712475

Step-by-step explanation:

hope it helps.....

Answer:

√{2×2}=√2²=±2 is your answer

Answer:

The answer should be 18.06 but I don't see that as a choice

Answer: 1770 rupees

Step-by-step explanation:

To solve this, we first calculate the simple interest which will be:

= (P × R × T) / 100

= (1500 × 9% × 2) / 100

= (1500 × 0.09 × 2) / 100

= 270

The total amount tha she'll get will be:

= 1500 + 270

= 1770 rupees

Answer:

27a + 9b + c is reminder

Step-by-step explanation:

Remainder theorem says that when p(x) is divided by (x – a) the remainder is given

by p(a)

Let p(x) = ax³ + bx²+ c

P(x) when divided by (x – 3)

Using Remainder theorem, we have

Remainder = p(3) = a(3³) + b(3²) +c

= 27a + 9b + c

Answer:

Each orange would cost $0.64.

Step-by-step explanation:

If you do 3.84 and divide that by 6, you would get the answer of $0.64 for each orange.

Unit rate is the quantity of an amount of something at a rate of one of another quantity.

The cost of one orange is $0.64

It is the quantity of an amount of something at a rate of one of another quantity.

In 2 hours, a man can walk for 6 miles

In 1 hour, a man will walk for 3 miles.

We have,

6 oranges = $3.84

Divide both sides by 6.

1 orange = $3.84/6

1 orange = $0.64

Thus,

The cost of one orange is $0.64.

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Answer:

it is 6 I hope that

Step-by-step explanation:

because if division 11 on 759.88

Answer:

a pound is 16 times as heavy as an ounce

Answer:

Option 4

Step-by-step explanation:

16 times an ounce - - - a pound

Answer:

x = 44

Step-by-step explanation:

You can rewrite logarithm equations like so:

[tex]log_{b}(x) = y\\\\x = b^y[/tex]

A way to remember this is the base in the logarithm is also the base in the exponent - then remember this base b is to the power of what's on the other side - and all this is equal to whatever's in the parentheses.

In this case,

[tex]log_3(2x-7) = 4\\2x - 7 = 3^4\\x = (3^4 + 7)/2 = 44[/tex]

Answer:

MK = 80

M= 10

K= 8                  

Answer:

4

Step-by-step explanation:

x + y = 6 + (-2) = 4

Answer:

A

Step-by-step explanation:

Answer:

652

Step-by-step explanation:

[tex]\sqrt{652 \times 652}[/tex] is equal to [tex]\sqrt{652^{2} }[/tex], and the square root of a number squared is always the original number, so [tex]\sqrt{652^{2} }[/tex] is equal to [tex]652[/tex].

Answer:

√{652×652}=√652²=±652

Step-by-step explanation:

Answer:

5×5=25/10 for mar hada dur kobic

Answer:

25/10

Step-by-step explanation:

Answer:formele solide sun obiectele care sunt tari dexemple piatra telefonul cubul ele sunt solide

Step-by-step explanaton:

DEFINITION-;

three dimensional figure have Length breadth and height and which have a fixed shape and accupies shapes are called solids

the line segment which to focus in solid meet is called its when three or more faces of a solid meet at one point with point is known as vertex

TYPES

CUBOID

a solid bounded by six rectangular play spaces is called a cuboid

ELEMENT OF CUBOID

2 CUBE

a solid cube whose all three dimension Length breadth and height are equal called cube

element of cube

it has 6 faces 8 vertex and 12

3 PRISM

a Prism is a solid whose side faces are rectangle and in the identical polygon in parallel planes

4 PYRAMID

a pyramid is a solid whose base is a flat plane rectilinear figure which may be triangular square rectangular or polygonal the side face of a pyramid are Triangles having a common vertex

5 CONE

it is a solid with a circular base and all is other purpose meet it common point known as vertex

6 CYLINDER

it is a solid with two circular base also if the cross section of prism is circle then is known as cylinder

Answer:

[tex]842\ \text{ft}[/tex]

[tex]y(t)=906-16t^2[/tex]

Step-by-step explanation:

Let [tex]y[/tex] be the height the object from the ground.

[tex]s[/tex] be the initial height of the object = 906 ft

[tex]u[/tex] = Initial velocity = 0

[tex]g[/tex] = Acceleration due to gravity = [tex]32\ \text{ft/s}^2[/tex]

[tex]t[/tex] = Time

The expression would be

[tex]y(t)=s-ut-\dfrac{1}{2}gt^2\\\Rightarrow y(t)=906-16t^2[/tex]

The required expression is [tex]y(t)=906-16t^2[/tex]

At [tex]t=2\ \text{s}[/tex]

[tex]y(2)=906-16\times 2^2\\\Rightarrow y(2)=842\ \text{ft}[/tex]

The height of the object after 2 seconds of falling is [tex]842\ \text{ft}[/tex].