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Reil [10]
3 years ago
15

Complete the statement about parallelogram ABCD.

Mathematics
1 answer:
Crank3 years ago
4 0

Step-by-step explanation:

Opposite angles of parallelograms are congruent

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The length of one of the equal sides of an isosceles triangle is 4 cm. If its base is 2 cm, then what is its area?​
TEA [102]

Answer:

A = 1/2bh

b = 2cm

h will be found using the side of the triangle with Pythagoras theorem

h² + 1² = 4²

h² = 15

h = √15 cm

then,

A = <u>2</u><u>*</u><u>√</u><u>1</u><u>5</u><u> </u>

2

A = √15cm²

5 0
2 years ago
30 miles in 4 hours in simplest form
SIZIF [17.4K]

Answer:

<u>15/2</u>

Step-by-step explanation:

  1. 30/4=7.5
  2. convert the decimal to a fraction
  3. 7.5 would give you 15/2 in fraction form
  4. since you can't simplify 15/2 anymore, <u>15/2</u> would be your answer.
3 0
3 years ago
An environmental group at a local college is conducting independent tests to determine the distance a particular make of automob
melomori [17]

Answer:

26.5265

Step-by-step explanation:

<u>Confidence Interval</u>

When the population standard deviation \sigma is known, the formula for a confidence interval for a population mean \bar x is:

\displaystyle \bar x \pm z\frac{\sigma}{\sqrt{n}}

Where n is the sample size and z is the corresponding z-value from the standard normal distribution for the selected confidence level. The value of z for a 95% confidence interval is z=1.96. The rest of the values are

\bar x=28.2,\ \sigma=2.7, \ n=10

Calculating the confidence interval

\displaystyle 28.2 \pm 1.96\frac{2.7}{\sqrt{10}}

\displaystyle 28.2 \pm 1.6735

Or, equivalently

26.5265

6 0
3 years ago
How do I do this problem?
Elenna [48]
Roots can be written as fraction exponents. An exponent of 1/2 means the square root.

(12 x^{4})^{1/2} =  \sqrt{12 x^{4} }  \\  \\ \sqrt{12 x^{4} } =  \sqrt{3*4*x^{2}*x^{2}} = 2x^{2} \sqrt{3}
8 0
3 years ago
NEED HELP ASAP! Plz answer all the questions! Including the one on the picture! Will give brainlest!
xeze [42]

-2/3-(-1 1/3) =

-2/3 + 1 1/3 =

4/3 - 2/3 =

<em>2/3</em>

12 - (-5) =

12 + 5 =

<em>17</em>

-1 - (-6) =

-1 + 6 =

6 - 1 =

<em>5</em>

-3 3/8 - 7/8 =

27/8 - 7/8 =

20/8 =

2 4/8 =

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

4 0
3 years ago
Read 2 more answers
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