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lianna [129]
3 years ago
10

What early human development was necessary for survival in cold environments?

Mathematics
2 answers:
AlekseyPX3 years ago
5 0
I thought it would be c but try b or a
Black_prince [1.1K]3 years ago
5 0
(A) finding shelter in caves that’s where they also developed a form of illustration by drawing on caves
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a carpenter cut four lengths of wood. the lengths were 36 3/4 in., 36 3/8 in., 37 1/2., and z in. if the mean of lengths is 36 5
lisov135 [29]
36 3/4 = 36.75
36 3/8 = 36.375
37 1/2 = 37.5
36 5/8 = 36.625

(36.75 + 36.375 + 37.5 + z) / 4 = 36.625
(110.625 + z) / 4 = 36.625
110.625 + z = 36.625 * 4
110.625 + z = 146.5
z = 146.5 - 110.625
z = 35.875 or 35 7/8 <===
6 0
3 years ago
Pls pls help I don’t have time HELP ASAP. It also detects if it’s right or wrong.
DaniilM [7]

Answer:

y=20x+150

Step-by-step explanation:

Sandy has 150 dollars ALREADY in her account, so each time she earns the money it is building upon. 20x (x because we don't know for how many months.)

Hope this helps ;)

8 0
3 years ago
The cost per hour of running an assembly line in a
nlexa [21]

Answer:

the minimum production level is costing $800 (0.8×$1000) per hour for 2000 (2×1000) items produced per hour.

Step-by-step explanation:

if there is no mistake in the problem description, I read the following function :

C(x) = y = 0.3x² - 1.2x + 2

I don't know if you learned this already, but to find the extreme values of a function you need to build the first derivative of the function y' and find its solutions for y'=0.

the first derivative of C(x) is

0.6x - 1.2 = y'

0.6x - 1.2 = 0

0.6x = 1.2

x = 2

C(2) = 0.3×2² - 1.2×2 + 2 = 0.3×4 - 2.4 + 2 = 1.2-2.4+2 = 0.8

so, the minimum production level is costing $800 (0.8×$1000) per hour for 2000 (2×1000) items produced per hour.

5 0
2 years ago
The equations of two lines are given. Determine if the lines are parallel, perpendicular, or neither.
andrey2020 [161]

Answer:

8x-7y=6

or, -7y=-8x+6

or, y=8x/7-6/7

so the slope is 8/7

8x-y=-8

or, -y=-8x-8

or, y=8x+8

So the slope is 8

Both has different slope and they don't satisfy the property of being perpendicular to each others, so they're neither parallel nor perpendicular.

Answered by GAUTHMATH

3 0
3 years ago
How do i use product rule and simplfy while keeping positive exponents
Alexus [3.1K]
Product rule is
( x^{m} )( x^{n} )= x^{m+n}
so if ou have
( x^{2} )( x^{3} )= x^{2+3}=x^{5}



not sure what yo mean by positive exponents, just add them
4 0
3 years ago
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