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3 years ago

Which of the following questions below can be answered using the sum -12+10

Mathematics

2 answers:

-BARSIC- [3]3 years ago

5 0

It’s 22 negativeBecause once you add up those to a negative is always a negative

Vanyuwa [196]3 years ago

5 0

Answer: is -22 a negative plus a positive is negative

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the states C&D spend a total of 55.6 million dollars for tourism the state C spends 3.2 million dollars more than State D fi

Helga [31]

Alright, let's break this down.
State D blew 55.6 million bucks on tourism.
State C spends an unknown amount, we just know it's 3.2 million MORE than state D.
Well, since we know State D spent 55.6 million on tourism, just add 3.2 million to it to find out how much State C spent.
55.6+3.2=58.8.

This means the state's spent:
State D: 55.6
State C: 58.8

~Hope this helps!

6 0

3 years ago

Construct a confidence interval for p1-p2 at the given level of confidence.

Georgia [21]

Using the z-distribution, the 90% confidence interval for the difference of proportions is given by: (-0.0534, 0.0434).

<h3>What is the mean and the standard error for the distribution of differences?</h3>

For each sample, the mean and the standard error are given as follows:

$p_1 = \frac{30}{235} = 0.1277, s_1 = \sqrt{\frac{0.1277(0.8723)}{235}} = 0.0218$ .

$p_2 = \frac{39}{294} = 0.1327, s_1 = \sqrt{\frac{0.1327(0.8673)}{294}} = 0.0198$ .

For the distribution of differences, they are given by:

$\overline{p} = p_1 - p_2 = 0.1277 - 0.1327 = -0.005$ .

$s = \sqrt{s_1^2 + s_2^2} = \sqrt{0.0218^2 + 0.0198^2} = 0.0294$

<h3>What is the confidence interval?</h3>

The interval is given by:

$\overline{p} \pm zs$

In this problem, we have a 90% confidence level, hence $\alpha = 0.9$ , z is the value of Z that has a p-value of $\frac{1+0.9}{2} = 0.95$ , so the critical value is z = 1.645.

Hence the bounds of the interval are:

$\overline{p} - zs = -0.005 - 1.645(0.0294) = -0.0534$

$\overline{p} + zs = -0.005 + 1.645(0.0294) = 0.0434$

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

4 0

2 years ago

HURRY PLEASE!!!!! Triangle RST is translated 2 units left and then reflected over the y-axis.

AVprozaik [17]

Answer:

The correct options are 1 and 2.

Step-by-step explanation:

The vertices of triangle are S(-4,4), T(-1,4), R(-1,1).

If triangle translated 2 units left,

$(x,y)\rightarrow (x-2,y)$

and then reflected over the y-axis,

$(x-2,y)\rightarrow (-x+2,y)$

The relation between image and preimage is

$(x,y)\rightarrow (-x+2,y)$ ..... (1)

The vertices of image are

$S(-4,4)\rightarrow S'(6,4)$

$T(-1,4)\rightarrow T'(3,4)$

$R(-1,1)\rightarrow R'(3,1)$

Therefore the vertices of image are S'(6,4),T'(3,4), R'(3,1).

1. A reflection over the y-axis and then a translation 2 units right is defined as

$(x,y)\rightarrow (-x+2,y)$

It is equivalent to relation 1, therefore option 1 is correct.

2. A 180 rotation about the origin, then a translation 2 units right, and then a reflection over the x-axis is defined as

$(x,y)\rightarrow (-x+2,y)$

It is equivalent to relation 1, therefore option 2 is correct.

3. A reflection over the y-axis and then a translation 2 units left is defined as

$(x,y)\rightarrow (-x-2,y)$

It is not equivalent to relation 1, therefore option 3 is incorrect.

4. A 180 rotation about the origin, then a translation 2 units left, and then a reflection over the x-axis is defined as

$(x,y)\rightarrow (-x-2,y)$

It is not equivalent to relation 1, therefore option 4 is incorrect.

5. A reflection over the x-axis and then a translation 2 units right is defined as

$(x,y)\rightarrow (x+2,-y)$

It is not equivalent to relation 1, therefore option 5 is incorrect.

6. A reflection over the x-axis and then a translation 2 units left is defined as

$(x,y)\rightarrow (x+2,-y)$

It is not equivalent to relation 1, therefore option 6 is incorrect.

Therefore the correct options are 1 and 2.

8 0

3 years ago

Read 2 more answers

Which number is the smallest 2, -2, -4 or -5<br> PLEASE HELPPP

sergeinik [125]

Answer:

-5

Step-by-step explanation:

think of it on a number line the number furthest to the left is always the smallest and the numbers to the right are bigger

8 0

3 years ago

Read 2 more answers

What number adds up to be 12 but also multiplies to be 12

netineya [11]

4+3+1+1+1+1+1 =12
4x3x1x1x1x1x1=12

8 0

3 years ago