All categories

3 years ago

INEQUALITIES! PLEASE HELP, 25 POINTS FOR JUST 8 QUESTIONS!!

Mathematics

1 answer:

Helen [10]3 years ago

8 0

1) Third option

2) Third option

3) First option

4) Third option

5) Third option

6) 2y - 2 < 14

2y < 16

y < 8 (Third option)

7) 25 > 1 - 3d

24 > -3d

-8 < d (Second option)

Hope this helps! ;)

You might be interested in

The circumference of a sphere was measured to be 90 cm with a possible error of 0.5 cm.

Akimi4 [234]

Answer:

Error in the sphere's surface: 29 $cm^2$ and relative error in surface measure: 0.011

Error in the sphere's volume: 205 $cm^3$ and relative error in the volume measure: 0.017

Step-by-step explanation:

(a)

The measured length (l) of the circumference is 90 cm with an error of 0.5 cm, that is:

$l=2\,\pi\,R=90\,cm\\R=\frac{90}{2\,\pi} \,cm=\frac{45}{\pi} \,cm=14.3239\,\,cm$

and with regards to the error:

$dl=0.5 \, cm\\dl=2\,\pi\,dR\\dR=\frac{dl}{2\,\pi} =\frac{1}{4\,\pi} cm = 0.0796\,cm$

then when we use the formula for the sphere's surface, we get:

$S=4\,\pi\,R^2\\dS=4\,\pi\,2\,R\,(dR)\\dS=8\,\,\pi\.(\frac{45}{\pi} \,\,cm)\,(\frac{1}{4\pi}\,cm) =\frac{90}{\pi} \,\,cm^2\approx \,29\,cm^2$

Then the relative error in the surface is:

$\frac{dS}{S} =\frac{90/\pi}{4\,\pi\,R^2} =\frac{1}{90} =0.011$

(b)

Use the formula for the volume of the sphere:

$V=\frac{4\,\pi}{3} R^3\\dV=\frac{4\,\pi}{3}\,3\,R^2\,(dR)=4\,\pi\,R^2\,(\frac{1}{4\pi}) \,cm=(\frac{45}{\pi})^2 \,\,cm^3\approx 205\,\,cm^3$

Then the relative error in the volume is:

$\frac{dV}{V} =\frac{205}{12310.5} \approx 0.017$

3 0

3 years ago

Dawn is selling her MP3 player for 3/4 of the original price. The original price for the MP3 player was $40. How much is she sel

IRISSAK [1]

Answer:

$30

Step-by-step explanation:

Have a Nice Day! :D

3 0

3 years ago

Read 2 more answers

2. Kendall wants to buy 8 cans of cat : 8.

GREYUIT [131]

Answer: $11.44

Step-by-step explanation:

I divided 4.29 by 3 which was $1.43 then i multiplied it by 8 to get $11.44

3 0

3 years ago

Read 2 more answers

Evaluate 2(8 + t)3 – 6 when s = 3 and t = 2.<br><br> +) The value of the expression is 250

siniylev [52]

Step-by-step explanation:

s = 3 and t = 2

= 2(8 + t)³ - 6

= 2(8 + 2)³ - 6

= 2(10)³ - 6

= 2(1.000) - 6

= 2.000 - 6

= 1.994

8 0

3 years ago

HELPPP!!!

Setler [38]

Answer:-5

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers