MATHEMATICS MIDDLE SCHOOL

5–2•3+6(9+1)=? Geometry Math.

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

5 - 2 • 3 + 6(9 + 1) =

Use the correct order of operations.

Do the addition in the parentheses first.

= 5 - 2 • 3 + 6(10)

Now do the multiplications in the order they appear from left to right.

= 5 - 6 + 60

Now do additions and subtractions in the order they appear from left to right.

= -1 + 60

= 59

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Bonsoir à tous, j'ai besoin d'aide urgemment en maths si possible et merci d'avance. L'exercice est photographié ci-dessus

Answers

m<SAB = 180 - 58,5 = 121,5

180 - 121,5 - 34,1 = 23,4

(sin 121,5)/SB = (sin 23.4)/18,7

SB = (sin 121,5 * 18,7)/(sin 23,4)

SB = 40,15

sin B = h/SB

h = (SB) * sin B

h = 40,15 * sin 35.1

h = 23,1

If it takes Sally 5 hours to clean the house, how long will it take Sally and her two friends to do the job if they work at the same rate?A. 1 1/3

B. 1 2/3

C. 2 1/3

D. 2 2/3

Answers

Answer:

Option B. $1(2)/(3)$

Step-by-step explanation:

Sally takes time to clean the house = 5 hours

If Sally and her two friends do the job at the same rate,

The time for the same work done by 3 people = time taken by one / number of people

= $(5)/(3)$

= $1(2)/(3)$

It will take $1(2)/(3)$ hours to clean the house by 3 people.

Sally (1 person) took 5 hours. how long will it take 3 people?

5 hours / 3 people = 5/3 = 1 2/3

The answer is B

What is 0.505 written as a fraction

Answers

0.505 = 0.505 / 1

Numerator = 0.505 × 10 × 10 × 10 = 505
Denominator = 1 × 10 × 10 × 10 = 1000

Numerator / Denominator = 505 / 1000

The Simplified fraction is

= 505/1000

= 101/200

Find the perimeter and area. (plz help with the answer)

Answers

Hello!

PERIMETER:

To find the perimeter of the trapezoid, simply add all sides together.

15 + 5 + 9 + 5 = 34

The perimeter is $\boxed{ \bf 34~units.}$

____________________________________________________________

AREA:

A = $(1)/(2)$ h( $b_(1)$ + $b_(2)$ )

A = $(1)/(2)$ 4(9 + 15)

A = $(1)/(2)$ 4(24)

A = 2(24)

A = 48

The area of the trapezoid is $\boxed{ \bf 48~units^2}$

1/3(2x-4)+5=-2/3(x+1)

Answers

$(1)/(3) (2x-4)+5=- (2)/(3)(x + 1) \n \n (2x-4)/(3) +5=- (2)/(3) (x + 1) \n \n (2x-4)/(3) +5=- (2(x + 1))/(3) \n \n 2(x - 2) + 15 = -2(x + 1) \n \n 2x - 4 + 15 = -2x - 2 \n \n 2x + 11 = -2x - 2 \n \n 2x + 11 + 2x = -2 \n \n 4x + 11 = -2 \n \n 4x = -2 - 11 \n \n 4x = -13 \n \n x = - (13)/(4) \n \n Answer: \fbox {x = -13/4} \ or \ \fbox {-3.25}$

$(1)/(3)(2x-4)+5=-(2)/(3)(x+1)\n\n3 *[ (1)/(3)(2x-4)+5] = 3* -(2)/(3)(x+1)\n\n(2x-4) + 15 = -2(x+1)\n\n2x - 4 + 15 = -2(x+1)\n\n2x + 11 = -2(x+1) \n\n2x + 11 = -2x -2\n\n4x + 11 = -2\n\n4x = -13\n\n\boxed{\bf{x = -(13)/(4)}}$