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3 years ago

Pls help this is due soon!!!!

Mathematics

1 answer:

Artemon [7]3 years ago

5 0

Biology Boys = 25
Chemistry Girls = 26
Chemistry Boys = 31
Physics Boys = 47
Physics Total = 76
Total Boys = 103

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Use the translation (x, y)→(x−4, y+2) to find the preimage of (7, 2)

Bess [88]

Answer:

(11 , 0)

Step-by-step explanation:

x - 4 = 7

x = 7 +4

x = 11

y + 2 = 2

y = 2 - 2

y = 0

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2 years ago

Số điểm cực trị của hàm số

dolphi86 [110]

Answer:

can someone please translate

6 0

3 years ago

The Sahara Desert has an area of approximately 9,400,400 km2. While estimates of its average depth vary, they center around 150

dolphi86 [110]

Answer:

$1.128048 \times 10^{25}$ grains of sand are in the Sahara Desert

Step-by-step explanation:

Given :

The Sahara Desert has an area of approximately 9,400,400 sq.km.

Depth = 150 m

To Find :Approximately how many grains of sand are in the Sahara Desert?

Solution:

Area of Sahara desert = 9,400,400 sq.km.

$1 km^2 = 1000000 m^2$

So, $9,400,400 km^2 = 1000000 \times 9400400 m^2$

$9,400,400 km^2 =9.4004 \times 10^{12}m^2$

Volume of sand = $Area \times depth$

= $1.41006\times 10^{15} m^3$

$1 m ^3 = 1000000 cm^3$

So, $1.41006\times 10^{15} m^3 = 1.41006\times 10^{15} \times 1000000cm^3$

$1.41006\times 10^{15} m^3 =1.41006 \times 10^{21}cm^3$

1 cubic cm holds grains of sand = 8000

$1.41006 \times 10^{21}cm^3$ holds grains of sand = $1.41006 \times 10^{21} \times 8000$

= $1.128048 \times 10^{25}$

Hence $1.128048 \times 10^{25}$ grains of sand are in the Sahara Desert

7 0

3 years ago

Simplify the Expression(20 points)-<br> -m - 7m

leva [86]

Answer:

-8m

Step-by-step explanation:

Combine like terms

−

{\color{#c92786}{-m}}{\color{#c92786}{-7m}}

−m−7m

−

{\color{#c92786}{-8m}}

−8m

5 0

3 years ago

Write an expression for 4 as a factor 5 times.

boyakko [2]

Answer:

4*4*4*4*4

Step-by-step explanation:

i dont know what ur on mate

8 0

3 years ago