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3 years ago

9

Daneielle's rectangular bedroom has an area of 12 3/4 square meters.It is 3.4 meters long. How many meters wide is Danielle's be

droom?

1 answer:

harina [27]3 years ago

3 0

12 $\frac{3}{4} :3.4=12.75:3.4=3.75$ m
Answer: wide is 3.75 m

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Calcular: E = (sec245o + tg45o) ctg37o - 2cos60o

Vlada [557]

Answer:

$-2.813$

Step-by-step explanation:

Se simplifica inicialmente la fórmula en términos de las funciones trigonométricas fundamentales (Initially, the formula is simplified in terms of fundamental trigonometric functions):

$(\sec 245^{\circ} + \tan 45^{\circ} )\cdot \cot 37^{\circ} - 2\cos 60^{\circ}$

$\left(\frac{1}{\cos 245^{\circ}}+\frac{\sin 45^{\circ}}{\cos 45^{\circ}} \right)\cdot \left(\frac{\cos 37^{\circ}}{\sin 37^{\circ}} \right) - 2\cdot \cos 60^{\circ}$

$(-2.366 + 1 )\cdot (1.327) - 1$

$-2.813$

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3 years ago

Daniel worked for 2 1/3 hours and earned $18.20. How much would he make if he worked for 5 1/4 hours? Enter your answer in the b

Aleks04 [339]

2 1/3hrs→ $18.20
1 hr→ $7.80
5 1/4hrs→ $7.80x5 1/4= $40.95

5 0

3 years ago

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I need help with this

VikaD [51]

This should help just try to use this

4 0

3 years ago

Solve for x. Show each step of the solution. 5.5(8-x)+44=104-3.5(3x+24)

earnstyle [38]

5.5 ( 8 - x ) + 44 = 104 - 3.5 ( 3x + 24 )

Distribute 5.5 through the parenthesis.

44 - 5.5x + 44 = 104 - 10.5x - 84

Add the numbers.

88 - 5.5x = 20 - 10.5x

Move variable to the left side and change its sign.

88 - 5.5x + 10.5x = 20
-5.5x + 10.5x = 20 -88

Collect like terms.

5x = 20 - 88

Calculate the sum or difference.

5x = - 68

Divide both sides by 5.

x = - 68 / 5

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3 years ago

A fourth-grade teacher gives homework every night in both mathematics and language arts. the time to complete the mathematics ho

xz_007 [3.2K]

The standard deviation for the combined assignment is 5 minutes.

To combine the standard deviations, we use:

$\sigma_z=\sqrt{(\sigma_x)^2+(\sigma_y)^2}$

With our information, we have:
$\sigma_z=\sqrt{3^2+4^2}
\\
\\=\sqrt{9+16}=\sqrt{25}=5$

7 0

2 years ago

Read 2 more answers