4 years ago

What is 27- 9.9 using mental math?

Mathematics

2 answers:

skad [1K]4 years ago

6 0

Answer: 17.7

Step-by-step explanation:

madam [21]4 years ago

6 0

Answer:

17.1

Step-by-step explanation:

Mentally, you can compute this as ...

27 -(10 -0.1) = (27 -10) +0.1 = 17.1

You might be interested in

What is a proof of volume a sphere?

Nesterboy [21]

Answer:

shows a cone pouring water twice into a sphere with the same radius/height to fill it to the top. Because it takes two cones to fill one sphere, we can use the volume of a cone formula as a starting point to derive the volume of a sphere

4 0

3 years ago

Points C and D represent the location of two parks on a map. Find the distance between the parks if the length of each unit on t

givi [52]

Answer:

can you put an image so I can help you?

Step-by-step explanation:

8 0

3 years ago

if alpha beta are the roots of the equation 2 x square - 6 x + 5 is equal to 0 find the equation whose roots are alpha / beta an

Tasya [4]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Solve the following system of equations: <br> x − 2y = 5<br> 2x − 4y = 10

emmasim [6.3K]

$\left\{\begin{array}{ccc}x-2y=5\\2x-4y=10&|divide\ both\ sides\ by\ (-2)\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}x-2y=5\\-x+2y=-5\end{array}\right}\\.\ \ \ \ \ \ \ \ \ \ \ 0=0-true\\\\Answer:infinitely\ many\ solutions\ \left\{\begin{array}{ccc}x\in\mathbb{R}\\y=\dfrac{x-5}{2}\end{array}\right$

5 0

4 years ago

Please help this is due tomorrow!!

Nikitich [7]

Angel is 8 years old and Alex is 30 years old x-y=30

3 0

3 years ago

Read 2 more answers

What is 27- 9.9 using mental math?​

What is 27- 9.9 using mental math?