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3 years ago

Larry was born on June 7, 1962. His little sister was born thirteen years and three days later. When was his sister born?

Mathematics

1 answer:

Viefleur [7K]3 years ago

3 0

Answer:

The answer is B

Step-by-step explanation:

2021 - 1962 =59

59-13=46

2021-46=1975

Then 7+3=10

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The Sahara Desert has an area of approximately 9 400 000 km^2. While estimates of its average depth vary, they center around 150

Andrew [12]

Answer:

a). $1.128\times 10^{25}$ grains

b). $\frac{1}{8000}$

c). $6.54305\times 10^{7}$ years

Step-by-step explanation:

a). Given Sahara desert has an area of approximately = 9400000 km²

= 9400000×(10000000000) cm²

= $9.4\times 10^{16}$ cm²

Depth of the desert = 150 m

= 15000 cm

Volume of desert = Area × Depth

= $9.4\times 10^{16}\times 15000$

= $1.41\times 10^{21}$ cm³

Since 1 cm³ holds sand grains = 8000

Therefore, Grains in Sahara Desert = $1.41\times 10^{21}\times 8000$

= $1.128\times 10^{25}$

b). Since 1 cm³ = 8000 grains

1 grain = $\frac{1}{8000}$ cm³

c). A truck can carry sand = 20.5 m³ Or $20.5\times (10^{2})^{3} cm^{3}$

= $2.05\times 10^{7}$ cm³

Now time taken to recreate Sahara Desert = $\frac{\text{Total amount of sand}}{\text{Sand in one truck}}\times 30$ seconds

= $\frac{1.41\times 10^{21}}{2.05\times 10^{7}}\times 30$

= $20.6341463\times 10^{14}$ seconds

= $\frac{20.6341463\times 10^{14} }{365\times \times 24\times 3600}$ years

= $6.54305\times 10^{7}$ years

6 0

3 years ago

As the Cave explorer was climbing back to the surface, he recorded his height along with the change in elevation, he wrote this

pshichka [43]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the expression : -600 - (-50) as explorer climbs back to the surface :

In terms of elevation :

-600 represents the initial position below the surface.

The Change in elevation from his initial position is - 50 (though the climber is moving towards the surface) ; the negative sign depicts that he is still below the surface.

Hence,

-600 - (-50)

= - 600 + 50

= - 610

Hence, the explorer moved an elevation of - 50 in the upward direction from his initial position of - 600 ; Hence, his position is - 610 ; which is still beneath the surface

4 0

3 years ago

Solve The Math equation below

Angelina_Jolie [31]

The Answer Is D. x=72

3 0

3 years ago

2) The coordinates of the vertices of quadrilateral ABCD are A(-1,8),

Verizon [17]

Answer:

The coordinates of vertices of A'B'C'D' are:

A'(1,-8), B'(0,-4), C'(2,-1) and D'(4,-3)

Step-by-step explanation:

When a point (h,k) is roated 180 degrees about the origin it becomes (-h,-k) which means that the new point after rotation is the negative of the previous.

Given vertices are:

A(-1,8), B(0,4), C(-2,1), and D(-4,3)

The new vertices will be:

$A(-1,8) => A'(1,-8)\\B(0,4)=> B'(0,-4)\\C(-2,1)=> C'(2,-1)\\D(-4,3)=> D'(4,-3)$

The coordinates of vertices of A'B'C'D' are:

A'(1,-8), B'(0,-4), C'(2,-1) and D'(4,-3)

3 0

3 years ago

What is the answer to d - 4 = 8.7

svet-max [94.6K]

Answer:

the answer is 12.7, you add four plus 8.7

6 0

3 years ago

Read 2 more answers