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3 years ago

- 45/40 + 1.875 7th grade math class (khan academy) plz help I need to bring up my grade :)

Mathematics

1 answer:

Kruka [31]3 years ago

6 0

Answer:

0.75 in decimal form or 3/4 in fraction form.

: )

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Fourth grade level. Use mental math to find 7x53

Mrrafil [7]

Answer:

371

Step-by-step explanation:

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3 years ago

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Can you help me? Please

Anni [7]

9514 1404 393

Answer:

Step-by-step explanation:

For an even-index radical, ...

$\sqrt[n]{x^n}=|x|\qquad\text{n even}$

This lets us simplify the given expression as follows:

$\sqrt[4]{81x^6y^4}-|y|\sqrt[4]{x^6}-\sqrt[4]{16x^2}=\sqrt[4]{(3xy)^4x^2}-|y|\sqrt[4]{x^4x^2}-\sqrt[4]{2^4x^2}\\\\=3|xy|\sqrt[4]{x^2}-|xy|\sqrt[4]{x^2}-2\sqrt[4]{x^2}=\boxed{2|xy|\sqrt[4]{x^2}-2\sqrt[4]{x^2}}$

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2 years ago

I dont Know what to put here <br> But Anwer Pls

g100num [7]

Answer:

Step-by-step explanation:

So, the 24cm, is the diameter, a little circle autonomy here, the diameter is the length across the circle, and the radius is to the mid point, or half-way point, which means that the radius is half the diameter, so, 24 ÷ 2 = 12

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3 years ago

Which pair of sneakers has the lowest sale price?

galben [10]

Answer:

15% off $30

Step-by-step explanation:

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2 years ago

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Find the average rate of change for the given function from x = −1 to x = 2.

GREYUIT [131]

Well, if you look at the graph, when x = -1, y or f(x) = 4.

and when x = 2, y = 0.

$\bf slope = m = \cfrac{rise}{run} \implies 
\cfrac{ f(x_2) - f(x_1)}{ x_2 - x_1}\impliedby 
\begin{array}{llll}
average~rate\\
of~change
\end{array}\\\\
-------------------------------\\\\
\begin{cases}
x_1=-1\\
x_2=2
\end{cases}\implies \cfrac{f(2)-f(-1)}{2-(-1)}\implies \cfrac{0-4}{2+1}\implies \cfrac{-4}{3}$

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3 years ago