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Mazyrski [523]
3 years ago
15

Mandy is trying to subtract 4 - 12 and she has asked you for help how would you explain the process of solving a problem to Mand

y using a number line
Mathematics
2 answers:
maw [93]3 years ago
5 0
Go 12 units to the left of 4, you get -8.

Hope this helps!
WARRIOR [948]3 years ago
4 0
You start at 12 in the number line then move 4 spaces backwards so 12-4 would equal 8
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Restaurant sells 10 tacos for seven dollars or five of the same kind of taco for $3.20 which is the better deal explain how you
nadezda [96]

Answer:

The first deal:10 tacos for $7

Step-by-step explanation:

5 times 3.20 = 16$ and 10 tacos=$7

5 0
3 years ago
Which system of equations can be used to find the roots of the equation 4x^5-12x^4+6x=5x^3-2x?
Sveta_85 [38]
^{(1)}\ \ 4x^5-12x^4+6x=5x^3-2x\ \ ^{(2)}\\\\  \left\{\begin{array}{ccc}y=4x^5-12x^4+6x\ \ \ ^{(1)}\\y=5x^3-2x\ \ \ ^{(2)}\end{array}\right


Answer: system nr 4.
7 0
3 years ago
Question 7
Angelina_Jolie [31]

Answer:

Step-by-step explanation:

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3 0
2 years ago
According to the U.S. Bureau of the Census, the average age of brides marrying for the first time is 23.9 years with a populatio
JulsSmile [24]

Answer:

We conclude that young women are delaying marriage and marrying at a later age.

Step-by-step explanation:

We are given that the average age of brides marrying for the first time is 23.9 years with a population standard deviation of 4.2 years.

The sociologist randomly samples 100 marriage records and determines the average age of the first time brides is 24.9 years.

Let \mu = <u><em>average age of brides marrying for the first time.</em></u>

So, Null Hypothesis, H_0 : \mu = 23.9 years     {means that young women are not delaying marriage and marrying at a later age}

Alternate Hypothesis, H_A : \mu > 23.9 years     {means that young women are delaying marriage and marrying at a later age}

The test statistics that would be used here <u>One-sample z test statistics</u> as we know about the population standard deviation;

                         T.S. =  \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }  ~ N(0,1)

where, \bar X = sample average age of the first time brides = 24.9 years

            \sigma = population standard deviation = 4.2 years

            n = sample of marriage records = 100

So, <u><em>the test statistics</em></u>  =  \frac{24.9-23.9}{\frac{4.2}{\sqrt{100} } }

                                     =  2.381

The value of z test statistics is 2.381.

<u>Now, at 1% significance level the z table gives critical value of and 2.326 for right-tailed test.</u>

Since our test statistic is more than the critical value of z as 2.381 > 2.326, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which <u>we reject our null hypothesis</u>.

Therefore, we conclude that young women are delaying marriage and marrying at a later age.

5 0
3 years ago
I need help a,b,or c
horrorfan [7]

Answer:

B, 150

Step-by-step explanation:

use pythagorean theorem, the sides of the triangle are 120 and 90, so when u  square them and add them together, you get 120^2 +90^2 = 22500

square root 22500 to find the hypotanuse which is the length from one corner to another. the anwser is 150m which is b

4 0
2 years ago
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