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2 years ago

The length and width of a book cover are 22.2cm and 12 cm respectively

1 answer:

8 0

Answer: The length and width of a book cover are 28.3 centimeters and 21 centimeters, respectively. Find the range of values for the actual length and width of the book cover. Minimum length = (28.3 - 0.05) cm and maximum length = (28.3 + 0.05) cm, so 28.25 cm ≤ length < 28.35 cm.

Hope this helps!

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PLS HELP!!! WILL GIVE BRAINLIEST!!!!!!

LuckyWell [14K]

Answer:

$56.88

Step-by-step explanation:

amount paying for sales tax---> $2.28

amount paying for tip---> $9.1

amount paying for car wash---> $45.50

$2.28 + $9.1 + $45.50= $56.88

hope this helps please give brainliest <3

6 0

1 year ago

Which ratio cannot form a proportion with 8/18<br> 1. 60/135<br> 2. 12/27<br> 3. 46/108<br> 4. 4/9

Gala2k [10]

Answer choice C can not form a proportion with 8/18.

7 0

2 years ago

Linda Gramham's Cinnamon Sugar Graham Cupcake recipe for 36 cupcakes requires 1 1/4 cups of sugar. How much sugar is required fo

Anon25 [30]

Answer:

31.25 or 31 1/4 cups

Step-by-step explanation:

1 1/4 = 36

x = 900

=> 5/4 = 36

x = 900

Cross multiply

=> 5/4 * 900 = 36 * x

=> 4500/4 = 36x

=> 1125 = 36x

=> 1125 / 36 = 36x / 36

=> 31.25 = x

31.25 = 31 1/4

So, 31.25 or 31 1/4 cups are required for 900 cupcakes.

5 0

2 years ago

The hypotenuse of a right triangle is 14 in. If the base

antoniya [11.8K]

Answer:

13.85

Step-by-step explanation:

U use the pythagorean theorem

So 2^2 + x^2 = 14^2

Simplify the equation: 4+x^2=196

--> x^2=192

--> x=13.85

-Hope this helps :)

8 0

2 years ago

4. Hydrocarbons in the cab of an automobile were measured during trips on the New Jersey Turnpike and trips through the Lincoln

pochemuha

Answer:

No these these result do not differ at 95% confidence level

Step-by-step explanation:

From the question we are told that

The first concentrations is $c _1= 30.0 \ g/m^3$

The second concentrations is $c _2 = 52.9 \ g/m^3$

The first sample size is $n_1 = 32$

The second sample size is $n_2 = 32$

The first standard deviation is $\sigma_1 = 30.0$

The first standard deviation is $\sigma_1 = 29.0$

The mean for Turnpike is $\= x _1 = \frac{c_1}{n} = \frac{31.4}{32} = 0.98125$

The mean for Tunnel is $\= x _2 = \frac{c_2}{n} = \frac{52.9}{32} = 1.6531$

The null hypothesis is $H_o : \mu _1 - \mu_2 = 0$

The alternative hypothesis is $H_a : \mu _1 - \mu_2 \ne 0$

Generally the test statistics is mathematically represented as

$t = \frac{\= x_1 - \= x_2}{ \sqrt{\frac{\sigma_1^2}{n_1} +\frac{\sigma_2^2}{n_2} }}$

$t = \frac{0.98125 - 1.6531}{ \sqrt{\frac{30^2}{32} +\frac{29^2}{32} }}$

$t = - 0.0899$

Generally the degree of freedom is mathematically represented as

$df = 32+ 32 - 2$

$df = 62$

The significance $\alpha$ is evaluated as

$\alpha = (C - 100 )\%$

=> $\alpha = (95 - 100 )\%$

=> $\alpha =0.05$

The critical value is evaluated as

$t_c = 2 * t_{0.05 , 62}$

From the student t- distribution table

$t_{0.05, 62} = 1.67$

$t_c = 2 * 1.67$

=> $t_c = 3.34$

given that

$t_c > t$ we fail to reject the null hypothesis so this mean that the result do not differ

6 0

2 years ago