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3 years ago

Based on the following calculator output, determine the inter-quartile range of the dataset.

Mathematics

1 answer:

sergeinik [125]3 years ago

3 0

The whole thing Is confusing

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Find the lengths of the lettered angles and sides. No approximation for square root is allowed

inn [45]

Answer:

x = 30°, y = 45°
w = 14√2, v = 7√2

Step-by-step explanation:

ΔABC

BC/AB = sin x
12/24 = sin x
1/2 = sin x
x = 30°

ΔDBC

DC = BC - given
∠C = 90° - given
ΔDBC is isosceles right triangle

∠BDC ≅ ∠DBC ⇒ y = 45°

-------------------------------------------

ΔMPN is right isosceles triangle ⇒ MN = PN√2 = 14√2

w = 14√2

ΔMKP is right isosceles triangle ⇒ MK = KP

v = 1/2MN = 1/2(14√2) = 7√2

7 0

3 years ago

Two number that multiply and add together to get 56 and -15

Kobotan [32]

Answer:

-8 & -7

Step-by-step explanation:

-8+-7=-15

-8*-7=56

3 0

4 years ago

Find the value of x in the equation 2x²+3x+3=20

Zigmanuir [339]

Answer:

$x= \frac{-3 - \sqrt{145} }{4} \ \ or\ \ x= \frac{-3 + \sqrt{145} }{4}$

Step-by-step explanation:

2x² + 3x + 3 = 20

⇔ 2x² + 3x + 3 - 20 = 0

⇔ 2x² + 3x - 17 = 0

<u>Using the Quadratic Formula to solve a Quadratic Equation</u> :

$x= \frac{-b \pm \sqrt{b^{2}-4ac} }{2a}$

In the equation 2x² + 3x - 17 = 0

a = 2 , b = 3 and c = -17

Then

b² - 4ac = 3² - 4×2×(-17)

= 9 + 8 × 17

= 9 + 136

= 145

Then

b² - 4ac > 0

Then

$x= \frac{-3 \pm \sqrt{145} }{2 \times 2}$

Then

$x= \frac{-3 \pm \sqrt{145} }{4}$

8 0

1 year ago

Read 2 more answers

Math question Need answer ASAP please

Valentin [98]

Triangle AEB and triangle CED (second option)

4 0

3 years ago

Read 2 more answers

753% in a decimal form<br> :)

sasho [114]

ANSWER: 7.53

Step-by-step explanation:

To convert a percent to decimal you need to divide the percent by 1,

753% ÷ 1 = 7.53

7 0

3 years ago