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4 years ago

Which expression is equivalent to −4.6+(−0.4)+(−7.2) ?

Mathematics

1 answer:

NeTakaya4 years ago

3 0

Answer: A. -4.6-(0.4+7.2)

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The answer for 10 2/3×31/8 rounded to the nearest whole number?

BigorU [14]

$10 \frac{2}{3} ( \frac{31}{8})$ can be changed into this equation:

$\frac{32}{3}( \frac{31}{8} )$

The 32 and 8 have a common factor of 8 and can be simplified to become this equation:

$\frac{4}{3} ( \frac{31}{1})$

Now multiply across to get $\frac{124}{3}$ which then simplifies to $41 \frac{1}{3}$ which as a decimal is 41.333 (repeating 3s). Nearest whole number is 41.

Your answer is 41

5 0

4 years ago

What is the area of this figure?

algol [13]

Answer:

81m²

Step-by-step explanation:

I took the quiz :)

8 0

3 years ago

The ratio of the sides of a triangle is 4:6:9. If the perimeter of the triangle is 95 meters,

Grace [21]

Answer:

45 meters

Step-by-step explanation:

Perimeter of the triangle is the sum of the 3 lengths of the traingle. Since the ratio of the sides is 4:6:9, let the shortest side be 4 units, the longest side be 9 units and the 3rd side be 6 units.

Units is represented as u.

Sum of all 3 sides= 95 m

4u +6u +9u= 95

19u= 95

u= 95 ÷19

u= 5 meters

Longest side= 9 units

Length of the longest side= 9(5) = 45m

5 0

3 years ago

Where did mathematics come from

Ganezh [65]

The most ancient mathematical texts came from mesopotamia and Egypt. The “inventors” of math are the Greek beginning in around the 6th century BC.

3 0

3 years ago

Elimination <br> 2x - 5y = 8 <br> x - 3y = -1

ruslelena [56]

X=29 and y=10

You would isolate one of the variables and then plug the expression into the other equation to find the value of one variable. Then you would plug this value into the other equation to determine the value of the remaining variable.

8 0

3 years ago