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3 years ago

A construction worker needs to determine the volume of a sandpille in a construction yard as shown

1 answer:

3 0

Answer:
6580cm
Step-by-step explanation:
The answer is 6580cm because....
Step one First let's figure out what the smaller shape's volume is. To do so we need to multiply ( LxWxH ) so 6x5x? it does not list what the height is so we know it has the same height as the larger shape and it's height is 14cm so we will use 14cm. 6x5x14=420cm
Step two Now lets find the Volume of the larger shape. So lets do LxWxH so Lx?x14 it does not give us the length so we need to add up all of the numbers along the line. We got 7cm then 5 from the bottom of the smaller shape and 10cm. all ads up to 22cm so 20x22x14=6160
Finally we add up the following shapes Volume which are 6160+420=6580cm

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Last year, 45% of business owners gave a holiday gift to their employees. A survey of business owners conducted this year indica

natka813 [3]

Answer:

a)x₁ = 24 business owners plan to provide a gift this year

b) p-value = 0,0017

c)p-value < α we have to eject H₀ And support the claim that the proportion of business owners providing gifts has decrease

Step-by-step explanation:

a) Sample size 80

proportion p₁ = 30 % p₁ = 0,3

Then x₁ = 80*0,3

x₁ = 24 business owners plan to provide a gift this year

b) Hypothesis Test

Null Hypothesis H₀ p₁ = 0,45

Alternative Hypothesis Hₐ p₁ < 0,45

p₁ = 0,3 then q₁ = 1 - 0,3 q₁ = 0,7

z(s) = ( p₁ - 0,45 )/ √p₁* q₁ / n

z(s) = - 0,15 / √0,002625

z(s) = - 0,15 / 0,05123

z(s) = - 2,9279

b)From z-table we find p-value = 0,0017

c) If α = 0,05 ( significance level ) as

p-value < α we have to eject H₀ And support the claim that the proportion of business owners providing gifts has decrease

6 0

3 years ago

Hey I need to point of rotation for this question. Need the answer asap :)

Neko [114]

Answer:

see explanation

Step-by-step explanation:

the vertices of S under the translation $\left[\begin{array}{ccc}0\\-3\\\end{array}\right]$ are

(2, 3 ) → (2, 0 )

(6, 3 ) → (6, 0 )

(4, 5 ) → (4, 2 )

Under an anticlockwise rotation about the origin of 90°

a point (x, y ) → (- y, x ) then the above coordinates become

(2, 0 ) → (0, 2 )

(6, 0 ) → (0, 6 )

(4, 2 ) → (- 2, 4 )

which are the coordinates of the vertices of the image T

then the rotation is 90° anticlockwise about the origin , point (0, 0 )

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2 years ago

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Plz explain how I'm doing this slope wrong!

raketka [301]

Its y2-y1 over x2-x1 thats the equation

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3 years ago

What is the y-intercept of f(x)=-X^3+3x^2+1?

IgorC [24]

ANSWER

The y-intercept is

$(0,1)$

EXPLANATION

The given polynomial function is

$f(x) = - {x}^{3} + 3 {x}^{2} + 1$

At y-intercept the value of x is zero.

Therefore we need to put
$x = 0$

into the given polynomial function to determine the corresponding y-value.

$f(0) = - {(0)}^{3} + 3 {(0)}^{2} + 1$

This will give us,

$f(0) = 0 + 0+ 1$

We further simplify to obtain,
$f(0) =1$

This means that when
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Hence the y-intercept is

$(0,1)$

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4 years ago

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Rainbow [258]

$\sqrt{16 } = 4$

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3 years ago

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