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3 years ago

If f(x)=(-x) cubed, then f(-3)?

Mathematics

1 answer:

velikii [3]3 years ago

7 0

Answer:

f(-3) = 27

Step-by-step explanation:

f(x) = (-x)^3

We want the value when x =-3

Substitute this in

f(-3) = (--3)^3

f(-3) = 3^3

f(-3) = 27

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Which amount is bigger 8/9 or .70

liq [111]

7/8 < 9/10

thats the answer
Hope this Helped :D

6 0

4 years ago

Lucky Charms are sold in boxes with an advertised mean weight of 20.5 oz. The standard deviation is known to be 2.25 oz. A consu

Alinara [238K]

Answer:

Set of hypothesis.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 20.5 oz

Sample mean, $\bar{x}$ = 20.4 oz

Sample size, n = 50

Population standard deviation, σ = 2.25 oz

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 20.5\text{ oz}\\H_A: \mu < 20.5\text{ oz}$

We use One-tailed z test(left tailed) to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{20.4 - 20.5}{\frac{2.25}{\sqrt{50}} } = -0.3142$

Based on the significance level, we can make our decision and complete the hypothesis testing.

We may accept the null hypothesis or fail to accept depending on different significance level.

4 0

4 years ago

You start at (8, 0). You move right 2 units. Where do you end?

frez [133]

Answer:

(10,0)

Step-by-step explanation:

Moving right 2 units will increase the x value by 2 since you are going further 'down the corridor'. Hope this helps.

8 0

2 years ago

Please help!!!!!!!!!!!!!!!!

____ [38]

Answer:

(i) x° = 28°

(ii) y° = 104°

(iii) z° = 76°

Step-by-step explanation:

x° is an alternate interior angle where transversal PQ crosses the parallel lines, so it has the same measure as the one marked 28°.

x° = 28°

The base angles of isosceles triangle PQR are both z°, so we must have ...

z° +z° +28° = 180° . . . . . . . . . sum of angles in a triangle

z° = (180° -28°)/2 = 152°/2 . . . solve for z

z° = 76°

y° and z° are a linear pair, so ...

y° = 180° -76°

y° = 104°

5 0

2 years ago

The trailer ramp is shaped like a triangle prism . The height of the ramp is 14 inches and the volume of the ramp is 4704 inches

Hatshy [7]

Answer:

A = 2167.73 cm²

Step-by-step explanation:

Given that,

A trailer ramp is in the shape of a triangular prism.

the height of the ramp, h = 14 inches

The volume of the ramp, V = 4704 inches²

We need to find the area of the base of the trailer ramp.

The volume of the triangular prism is given by :

$V=A\times h$

A is area of base and h is height

$A=\dfrac{V}{h}\\\\A=\dfrac{4704}{14}\\\\A=336\ \text{inches}^2$

A = 2167.73 cm²

So, the area of the base of the ramp is 2167.73 cm².

8 0

4 years ago