3 years ago

Give one example of when you would use the friendly numbers strategy to subtract. Explain why.

Mathematics

2 answers:

Harman [31]3 years ago

8 0

U can also use agarothim strategy

ziro4ka [17]3 years ago

6 0

In the <span>addition process</span> this usually involves:

<span><span>rounding numbers up to the nearest multiple of 10 or 100 </span>subtracting the extras that were added at the end.</span>

In the subtraction process this usually involves subtracting too much and completing the calculation by putting some back.

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suppose the leftmost digits of two numbers are eight and three can you tell which number is greater explain

tekilochka [14]

No because you don't know how many places are in the number
ex:843 and 3257
there are 4 places in 3257 and only 3 places in 843

3 0

3 years ago

Sound travels about 340 m / s. The function d(t) = 340t gives the distance d(t), in meters that sound travels in t seconds. How

Juliette [100K]

Answer:

d(63)=21,420m

Step-by-step explanation:

d(t)=340t

D=Distance

T=Time

D(63)=21,420

3 0

2 years ago

Find x for,<br> sin⁻¹ 4x + sin⁻¹ 3x = -<img src="https://tex.z-dn.net/?f=%5Cfrac%7B%5Cpi%20%7D%7B2%7D" id="TexFormula1" title="\

Novay_Z [31]

<h2>Explanation:</h2><h2></h2>

Let's solve this problem graphically. Here we have the following equation:

$sin^{-1}(4x) + sin^{-1}(3x) = -\frac{\pi}{2}$

So we can rewrite this as:

$f(x)=sin^{-1}(4x) + sin^{-1}(3x) \\ \\ g(x)= -\frac{\pi}{2}$

So the solution to the equation is the x-value at which the functions f and g intersect. In other words:

$f(x)=g(x) \\ \\ sin^{-1}(4x) + sin^{-1}(3x) = -\frac{\pi}{2}$

Using graphing calculator, we get that this value occurs at:

$\boxed{x=-0.2}$

3 0

3 years ago

Use the distributive property to find two expressions that are equivalent to 7(3x - 4)

ehidna [41]

I could only figure out one... sorry! Good luck

The answer is: 21x-28

7 0

3 years ago

What kind of triangle is this?

Agata [3.3K]

B. As all the sides are different lengths and angle f is bigger than 90 so it is obtuse
Hope this helps

7 0

3 years ago