3 years ago

Mentally solve 93 - 27 in as many ways as you can

Mathematics

2 answers:

zhannawk [14.2K]3 years ago

8 0

Answer:

93-27= 66

Step-by-step explanation:

Svetach [21]3 years ago

7 0

Answer:

That is one way to solve it.

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Pls i dont have time help

kvv77 [185]

18 !

27/x = 12/8
Cross multiply and then solve

4 0

2 years ago

Qualitative methods are primarily based on numerical data importance of research observations the number of surveys returned sta

beks73 [17]

False. This describes quantitative methods

8 0

2 years ago

(×-5) second power equals 3

Snezhnost [94]

Answer: $x_1=6.73\\\\x_2=3.26$

Step-by-step explanation:

Given the following expression:

$(x-5)^2=3$

And knowing that:

$(a\±b)^2=a^2-2ab+b^2$

We get:

$x^2-2(x)(5)+5^2=3\\\\x^2-10x+25=3$

Move the 3 to the left side of the equation:

$x^2-10x+25-3=0\\\\x^2-10x+22=0$

Apply the Quadratic formula:

$x=\frac{-b\±\sqrt{b^2-4ac} }{2a}$

In this case:

$a=1\\b=-10\\c=22$

Substituting values into the Quadratic formula, we get:

$x=\frac{-(-10)\±\sqrt{(-10)^2-4(1)(22)} }{2(1)}\\\\\\x_1=6.73\\\\x_2=3.26$

6 0

3 years ago

Rewrite the expression by using the distributive property and collecting like terms 1/5(5x-15)-2x

inessss [21]

Answer:

-x-3

Step-by-step explanation:

First, you need to distribute the 1/5 to both the term 5x and the term -15, which requires multiplication. This gives you 1x-3. The -2x can then be added on to this equation, which gives you 1x-3-2x. Combining the like terms of 1x and -2x gives you -x. The entire expression is then -x-3.

3 0

3 years ago

Christian can clean the room and 20 minutes by himself and Bob can clean the room and 30 minutes by himself how long would it ta

Vsevolod [243]

Answer:

it would take 10 minutes if they worked together

Step-by-step explanation:

6 0

3 years ago