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hjlf
3 years ago
11

(-5,2), (-3,4), (1,0), (-1, -2) What shape is it?

Mathematics
1 answer:
mixer [17]3 years ago
3 0

Answer:

If you connect them together, the shape is a rectangle.

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Warm up:Area.how many square units will it take to fill up this rectangle?
astra-53 [7]

Answer:

<em>1</em><em>2</em>

Step-by-step explanation:

<em>here's</em><em> your</em><em> solution</em>

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<em>=</em><em>></em><em> </em><em>area </em><em>4</em><em>*</em><em>3</em><em> </em><em>=</em><em> </em><em>1</em><em>2</em><em>.</em><em>s</em><em>q</em><em>u</em><em>n</em><em>i</em><em>t</em>

<em>=</em><em>></em><em> </em><em>area </em><em>of </em><em>square</em><em> </em><em>=</em><em> </em><em>side^</em><em>2</em><em> </em>

<em>=</em><em>></em><em> </em><em>area </em><em>=</em><em> </em><em>1</em><em>.</em><em>s</em><em>q</em><em>u</em><em>n</em><em>i</em><em>t</em>

<em>=</em><em>></em><em> </em><em>Number</em><em> of</em><em> </em><em>square</em><em> </em><em>=</em><em> </em><em>area</em><em> of</em><em> rectangle</em><em>/</em><em>area</em><em> of</em><em> </em><em>square</em><em> </em>

<em>=</em><em>></em><em> </em><em>n</em><em>o </em><em>of </em><em>square</em><em> </em><em>=</em><em> </em><em>1</em><em>2</em><em>/</em><em>1</em>

<em> </em><em> </em><em>=</em><em>></em><em>. </em><em>1</em><em>2</em><em> </em>

5 0
2 years ago
A report on consumer financial literacy summarized data from a representative sample of 1,664 adult Americans. Based on data fro
daser333 [38]

Answer:

a. The 95% confidence interval for the proportion of all adult Americans who would give themselves a grade of A or B on their financial knowledge of personal finance is (0.54, 0.588). This means that we are 95% sure that the true proportion of all adult Americans who would give themselves a grade of A or B on their financial knowledge of personal finance is between these two bounds.

b. Because this confidence interval is entirely above 0.5, the interval is consistent with the statement that a majority of adult Americans would give themselves a grade of A or B.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

Sample of 1,664 adult Americans, 939 people in the sample would have given themselves a grade of A or B in personal finance.

This means that n = 1664, \pi = \frac{939}{1664} = 0.5643

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5643 - 1.96\sqrt{\frac{0.5643*0.4357}{1644}} = 0.54

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5643 + 1.96\sqrt{\frac{0.5643*0.4357}{1644}} = 0.588

The 95% confidence interval for the proportion of all adult Americans who would give themselves a grade of A or B on their financial knowledge of personal finance is (0.54, 0.588). This means that we are 95% sure that the true proportion of all adult Americans who would give themselves a grade of A or B on their financial knowledge of personal finance is between these two bounds.

(b) Is the confidence interval from part (a) consistent with the statement that a majority of adult Americans would give themselves a grade of A or B?

Yes, because the confidence interval is entirely above 0.5.

Because this confidence interval is entirely above 0.5, the interval is consistent with the statement that a majority of adult Americans would give themselves a grade of A or B.

8 0
2 years ago
Solve each equation. Show all your work. Round your answers to four decimal places. (a) 7^4x=10,(b)ln(2)+In(4x-1)=5
KengaRu [80]
A.) 7^4x = 10
log base 10 (7^4X) = log base 10 (10)
4x log base 10 (7) = 1
4x (0.8451) = 1
3.3804x = 1
x = 0.2958

b.) ln(2) + ln(4x-1) = 5
ln (2 * 4x-1) = 5
ln (8x-2) = 5
log base (3) (8x-2) = 5
e^5 = 8x-2
e^5+2 = 8x
x = 18.8016
4 0
3 years ago
A rectangular box with an open top has a length of x feet, a width of y feet, and a height of z feet. It costs $4.30 per square
almond37 [142]

Answer:

C=$(4.30xy+5.40(xz+yz))

Step-by-step explanation:

Surface Area of a Cuboid=2(LW+LH+HW)

Since the top is open

Surface Area = LW+2(LH+HW)

If Length = x feet,

Width =y feet

Height = z feet

Surface Area = xy+2(xz+yz)

Area of the base=xy

If it costs $4.30 per square foot to build the base

Cost of the base=Cost Per Square Foot X Area = $4.30xy

Area of the sides =2(xz+yz)

If it costs $2.70 per square foot to build the sides

Cost of the sides=Cost Per Square Foot X Area of the sides

= 2.70 X 2(xz+yz)

=5.40(xz+yz)

Cost of Constructing the Box = Cost of Constructing the Base + Cost of Constructing the Sides.

Therefore,

C=$(4.30xy+5.40(xz+yz))

7 0
3 years ago
Determine whether y varies directly with x. If so, find the constant of variation and write the function rule.
Alexeev081 [22]
Yes they are, the constant variation is that for every 3 added to the x side, 1 is added to the y side. I would really appreciate the brainliest mark thanks!
4 0
3 years ago
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