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Yuliya22 [10]
3 years ago
7

What quadrilateral has opposite sides equal in length and parallel?

Mathematics
2 answers:
ella [17]3 years ago
5 0
Parallegrom has opposite sides equal in length and parallel
charle [14.2K]3 years ago
5 0
I believe the answer is Parallelogram
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David's gasoline station offers 4 cents off per gallon if the customer pays in cash and does not use a credit card. Past evidenc
shusha [124]

Answer:

0.6535

Step-by-step explanation:

Given that during a one-hour period twenty-five customers buy gasoline at this station.

Let X be the no of persons out of these 25 who pay by cash.

X has two outcomes and each trial is independent of other.

Hence X is binomial (n=25, p=0.40)

Required probability

= P(X\geq 10)\\=P(10)+P(11)+...+P(25)\\=\Sigma_{10}^{25}  25Cr (0.4)^r (1-0.4)^{25-r}

=0.6535

7 0
3 years ago
A right triangle has sides of length 3, 4, and .
olchik [2.2K]

Answer:

5/hypotenuse, the square root of 7/ leg

Step-by-step explanation:

3^2+4^2=25 or 5^2. you use a^2+b^2=c^2. it would be one of the hypotenuses. If the missing number is a leg, you would do 4^2=3^2+x^2. 16=9+x^2, 7=x^2, so you plug in the numbers differently.

3 0
3 years ago
Read 2 more answers
WILL MARK CORRECT ANSWER BRAINLIEST
vladimir1956 [14]
3y^-4/3 x 2 3/y
Write in exponential form with the base of y
= 3y^-4/3 x 2y^1/3
Calculate the product
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Any expression raised to the power of equals its reciprocal
= 6 x 1/y
Calculate the product
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8 0
2 years ago
PLEASE HELPPPP!!!!<br><br><br><br> If RS = 13 and ST = 8, find RT.
jarptica [38.1K]

Answer:

the answer is 21

because

rt=rs+st

13+8=21

8 0
3 years ago
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How do you find the surface area of a composite figure?
Mekhanik [1.2K]

A composite figure is a figure made up of simple shapes. To find the total surface area of a composite figure, you break up the composite figure into simple shapes whose surface areas you can find using existing formulas. Then you add all the areas of the simple shapes to find the total surface area of the composite figure.

The figure in this problem is a cylinder with a cone on top. The visible areas are: 1) The lower base of the cylinder; 2) The lateral area of the cylinder (the vertical wall all around the cylinder); 3) The lateral area of the cone.

The base of the cone and top base of the cylinder are not visible because they are interior to the composite figure. We only have the three surfaces described above to calculate and add together.

1) The lower base of the cylinder is a circle. We use the formula for the area of a circle using a radius of 4 cm.

A_{circle} = \pi r^2 = \pi \times (4~cm)^2 = 16 \pi~cm^2

2) The lateral area of the cylinder is the area of a rectangle whose length is the circumference of the base and whose width is the height of the cylinder.

A_{lateral~rectanlge} = LW = 2 \pi r \times h = 2 \pi (4~cm)(8~cm) = 64\pi~cm^2

3) The lateral area of the cone is given by the formula:

A_{lateral~cone} = \pi r \sqrt{r^2 + h^2}

A_{lateral~cone} = \pi \times (4~cm)\sqrt{(4~cm)^2 + (5~cm)^2}

A_{lateral~cone} = 4 \pi \sqrt{41} ~cm^2

To find the total surface area, we add the three surface areas we found above.

A = 16 \pi~cm^2 + 64\pi~cm^2 + 4 \pi \sqrt{41} ~cm^2

The exact area is:

A = (80 + 4 \sqrt{41})\pi ~cm^2

The approximate area in terms of pi is:

A = 105.6 \pi~cm^2

7 0
3 years ago
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