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3 years ago

Heloo i really need help! any helo would he appreciated!

Mathematics

2 answers:

yarga [219]3 years ago

7 0

Answer:

BC = 50

Step-by-step explanation:

AB and AD are congruent, thus

AB = AD, that is

5x + 10 = 3x + 18 ( subtract 3x from both sides )

2x + 10 = 18 ( subtract 10 from both sides )

2x = 8 ( divide both sides by 2 )

x = 4

Thus

BC = 12x + 2 = 12(4) + 2 = 48 + 2 = 50

trapecia [35]3 years ago

6 0

Answer:

The measure of angle DPA is 39°

Step-by-step explanation:

step 1

Find the value of x we know that arc AB+arc BC+arc CD+arc DA=360°

substitute the values

(5x+10)°+(x+1)°+3x°+(3x+25)°=360°

Solve for x

(12x+36)°=360°

12x=360°-36°

x=324°/12=27°

step 2 Find the measure of angle DPA

we know that The measurement of the external angle is the semi-difference of the arcs which comprises

m∠DPA=(1/2)[arc DA-arc BC]

arc DA=3(27)+25=106°

arc BC=27+1=28°

substitute the values

m∠DPA=(1/2)[106°-28°]=39°

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jonny [76]

Answer:

x = 85°

Step-by-step explanation:

<u>Sum of interior angles of any triangle is 180°:</u>

52° + 43° + x = 180°
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8 0

3 years ago

Find the distance between the following coordinates: I(-a,b), J(a,b)

olchik [2.2K]

Answer:

Step-by-step explanation:

using distance formula:

√(x₂-x₁)² + (y₂-y₁)²

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Hope this helps:)

8 0

3 years ago

What is the circumference of the circle?

True [87]

Step-by-step explanation:

What is the circumference of the circle?

f) 52 cm2

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5 0

3 years ago

The brain volumes ?( cm cubed cm3?) of 20 brains have a mean of 1083.9 1083.9 cm cubed cm3 and a standard deviation of 122.2 122

Colt1911 [192]

Answer:

Range: (844.9,1333.7)

A brain volume of 1348.3 cm cubed can be considered significantly high.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 1083.9 cm cubed

Standard Deviation, σ = 122.2 cm cubed

Range rule thumb:

This rule state that the the range of data is four times the standard deviation of the data.

$\text{Range} = 4\times \sigma = 4\times 122.2 = 488.8$

Upper Limit:

$\mu + 2\sigma = 1089.3 + 2(122.2) = 1333.7$

Lower limit:

$\mu - 2\sigma = 1089.3 - 2(122.2) = 844.9$

Since, 1348.3 does not lie in the range (844.9,1333.7), a brain volume of 1348.3 cm cubed can be considered significantly high.

6 0

3 years ago

Six students earned a perfect score on a history quiz. Only 5% of the entire grade earned a perfect score. How many students are

stiks02 [169]

Answer:

120

Step-by-step explanation:

If 6 = 5%, then 6 = 1/20 of the total grade. 6×20= 120

5 0

3 years ago

Heloo i really need help! any helo would he appreciated!​

Heloo i really need help! any helo would he appreciated!