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3 years ago

Addition, subtraction, multiplication, and division are all called ____.

Mathematics

2 answers:

Marysya12 [62]3 years ago

8 0

They are called the order of operations, or PEMDAS. Hope this helps!

Ugo [173]3 years ago

6 0

I believe the correct answer would be basic operations.
Hope it helps!

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8.97 in word form and expanded form

avanturin [10]

8+.90+.07
This the answer because you have to make it as an addition way.
Hope I helped.

4 0

3 years ago

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Y = -x^2 + 5<br> -x + y = 3<br> Solve algebraically pleaseee help!!!

SIZIF [17.4K]

2.37 I’m pretty sure

4 0

3 years ago

4 The ratio of corresponding dimensions of two similar solids is 3/4. The surface

White raven [17]

4.

The ratio is 3/4 for corresponding dimensions, the ratio of their surface areas is equal to the square of this ratio:

$\sf (\dfrac{3}{4})^2=\dfrac{S}{96}$

Simplify the exponent:

$\sf \dfrac{9}{16}=\dfrac{96}{S}$

Cross multiply:

$\sf 9S=1536$

Divide 9 to both sides:

$\sf S\approx 170.7~m^2$

So the surface area of the second solid is 54 square meters.

The ratio is 3/4 for corresponding dimensions, the ratio of their volumes is equal to the cube of this ratio:

$\sf (\dfrac{3}{4})^3=\dfrac{720}{V}$

Simplify the exponent:

$\sf \dfrac{27}{64}=\dfrac{720}{V}$

Cross multiply:

$\sf 27V=46080$

Divide 64 to both sides:

$\sf V\approx 1706.7~m^3$

5.

A globe is a sphere, use the formula for the volume of a sphere:

$\sf V=\dfrac{4}{3}\pi r^3$

The radius is half of the diameter, so the radius here is 40/2 = 20. Plug it in the formula, use 3.14 to approximate for Pi:

$\sf V=\dfrac{4}{3}(3.14)(20)^3$

Simplify the exponent:

$\sf V=\dfrac{4}{3}(3.14)(8000)$

Multiply:

$\sf V\approx \boxed{\sf 33,493~in^3}$

6 0

4 years ago

Read 2 more answers

Two accounts earn simple interest. The balance y (in dollars) of Account A after x years can be modeled by y=10x+500. Account B

guapka [62]

A has a greater principal

Principal of A is $500, the principal of B is $400, so A's principal is greater by $100

Annual interest rate of A:

10/500 x 100

The interest rate of B is higher.

4) B's annual interest rate is 5% and A's annual interest rate is 2%, so B's is higher by 3%.

Hope this helps! Have a great Tuesday!

7 0

3 years ago

A rectangular field has dimensions of (2x-3) yards and (x+4) yards. the area of the field is 285 square yards. what are the leng

trasher [3.6K]

The area of a rectangle is given by the multiplication of its dimensions:

$\text{Area} = \text{width} \times \text{length}$

In this case, we have an exact value for the area, and two variable expressions for width and length. Let's replace the formula above with what we're given:

$285 = (2x-3)(x+4)$