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3 years ago

9

Each candle uses 10 ounces of wax and 1 ounces of scent. Explain in complete sentences how I can determine the number of candles

that can be made if I have 50 pounds of wax.

1 answer:

Sphinxa [80]3 years ago

4 0

You would multiply 50x16 being 16 ounces= 1 pound and than divide that by 10

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five years ago, sarah's aunt was 4 times older than sarah. if sarah's aunt is 42 years older then sarah, then sarah, how ols is

Nimfa-mama [501]

Answer:

Therefore, Sara’s current age (5 years later) is 19 years old.

Step-by-step explanation:

Let xx be Sara’s age five years ago. Therefore, Sara’s aunt’s age 5 years ago is 4x4x.

The difference in their ages is a constant, no matter how many years have gone by. (Can you see why?)

4x−x=42

3x=42

x=42/3

x=14

14+5=19

Therefore, Sara’s current age (5 years later) is 19 years old.

4 0

2 years ago

An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such tha

BartSMP [9]

Answer:

The decision rule is

Reject the null hypothesis

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 5.6 \ pounds/inch^2$

The sample size is n = 160

The sample mean is $\= x = 5.7 \ pounds/ inch^2$

The variance is $\sigma ^2 = 0.25$

The level of significance is $\alpha = 0.01$

The null hypothesis is $H_o : \mu = 5.6$

The alternative hypothesis is $H_a : \mu > 5.6$

Generally the standard deviation is mathematically represented as

$\sigma = \sqrt{\sigma ^2 }$

=> $\sigma = \sqrt{0.25 }$

=> $\sigma = 0.5$

Generally the test statistics is mathematically represented as

$z = \frac{\= x - \mu }{ \frac{\sigma}{\sqrt{n} } }$

=> $z = \frac{5.7 - 5.6 }{ \frac{0.5 }{\sqrt{ 160 } } }$

=> $z = 2.53$

From the z table the area under the normal curve to the left corresponding to 2.53 is

$p-value = P(Z > 2.53 ) =0.0057$

From the value obtained we see that the $p-value < \alpha$ hence

The decision rule is

Reject the null hypothesis

The conclusion is

There is sufficient evidence to conclude that the believe that the valve performs above the specifications is true

5 0

3 years ago

9) Which solution is correct? Be sure to check for extraneous solutions.

shutvik [7]

(x+3)2 = x2+6x+9

(x+2)2 = x2+4x+4

(x-1)2 = x2-2x+1

3 0

3 years ago

PLEASE HELP!!! NEED AN ANSWER ASAP

kvv77 [185]

If my calculations are right the answer should be c. 40.5mi

7 0

3 years ago

Read 2 more answers

How do you solve: Tori needed to take a taxi. The fare for

shepuryov [24]

Answer: The required number of miles rode is 4.6875.

Step-by-step explanation: We are given to solve the following situation for the value of d :

Tori needed to take a taxi. The fare for riding in a taxi is a $3 fixed charge and $0.80 per mile. The fare for a ride of d miles is $6.75.

According to the given information, we have

$3+0.80d=6.75\\\\\Rightarrow 0.80d=6.75-3\\\\\Rightarrow 0.80d=3.75\\\\\Rightarrow d=\dfrac{3.75}{0.80}\\\\\Rightarrow d=4.6875.$

Thus, the required number of miles rode is 4.6875.

6 0

3 years ago