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3 years ago

Explain how you would use an area model to show 3 x 19.

Mathematics

1 answer:

Triss [41]3 years ago

7 0

Answer:

You would draw a rectangle that has 3 rows of 19 squares.

This would represent 3 times 9.

Step-by-step explanation:

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Use the equation to answer the questions. Round both answers to nearest whole number. Y = 47.25 − 2.25 X If Y equals 8 , what is

noname [10]

Answer:

If Y equals 8, X is equal to 17.

If Y drops to 4, X is equal to 19.

Step-by-step explanation:

We know that the equation is $Y = 47.25- 2.25X$ and we want to find X when Y = 8. To do this we solve the equation for X.

$47.25-2.25X=8\\47.25\cdot \:100-2.25X\cdot \:100=8\cdot \:100\\4725-225X=800\\4725-225X-4725=800-4725\\-225X=-3925\\\frac{-225X}{-225}=\frac{-3925}{-225}\\X=\frac{157}{9}=17.4444...$

17.4444 rounded to the nearest whole number is 17.

If Y drops to 4,

$4 = 47.25- 2.25X\\47.25-2.25X=4\\47.25\cdot \:100-2.25X\cdot \:100=4\cdot \:100\\4725-225X=400\\4725-225X-4725=400-4725\\-225X=-4325\\X=\frac{173}{9}=19.2222...$

19.2222 rounded to the nearest whole number is 19.

5 0

3 years ago

Kiera operates an orange juice stand. On Monday she used 1/2 of a bag of oranges. On Tuesday she used 3/4 as many oranges as on

Alecsey [184]

Answer:

I think the answer is 3/8 bight i might be wrong.

Step-by-step explanation:

3/4*1/2=3/8

All I did was multiply the two fractions.

6 0

3 years ago

How do you solve this equation on surds?

Arisa [49]

Fist do the parentheses that come first one top then do the second set of parentheses, then add those and you have your answer

6 0

3 years ago

A football field is rectangular and measures 360 feet by 160 feet. A flying disk is randomly tossed onto the field. If it is equ

kaheart [24]

The dimensions if the field are: the length is 360 feet; the width is 160 feet.

5 0

3 years ago

- Use the unit circle to evaluate<br> the six trigonometric functions<br> of theta= 4pi

Helen [10]

<h2> The six trigonometric functions, $\sin \dfrac{\pi}{4} =\dfrac{1}{\sqrt{2}}$ , $\cos \dfrac{\pi}{4} =\dfrac{1}{\sqrt{2}}$ , $\tan \dfrac{\pi}{4} =1$ , $\cot \dfrac{\pi}{4} =1$ , $\sec \dfrac{\pi}{4} =\sqrt{2}$ and $\csc \dfrac{\pi}{4} =\sqrt{2}$ .</h2>

Step-by-step explanation:

We have,

$\dfrac{\pi}{4}$

To write the six trigonometric functions = ?

$\sin \dfrac{\pi}{4} =\dfrac{1}{\sqrt{2}}$

$\cos \dfrac{\pi}{4} =\dfrac{1}{\sqrt{2}}$

$\tan \dfrac{\pi}{4} =1$

$\cot \dfrac{\pi}{4} =1$

$\sec \dfrac{\pi}{4} =\sqrt{2}$

$\csc \dfrac{\pi}{4} =\sqrt{2}$

∴ The six trigonometric functions, $\sin \dfrac{\pi}{4} =\dfrac{1}{\sqrt{2}}$ , $\cos \dfrac{\pi}{4} =\dfrac{1}{\sqrt{2}}$ , $\tan \dfrac{\pi}{4} =1$ , $\cot \dfrac{\pi}{4} =1$ , $\sec \dfrac{\pi}{4} =\sqrt{2}$ and $\csc \dfrac{\pi}{4} =\sqrt{2}$ .

8 0

3 years ago