3 years ago

What's the difference?

Mathematics

1 answer:

lbvjy [14]3 years ago

8 0

The one above has parenthesis and the one below doesn't!!

Hope this helps!!! :D

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Given that y is proportional to x, what linear equation can you write if y is 16 when x is 20?

Helga [31]

B. y=4/5x its just taking half

7 0

3 years ago

A city has a population of 240,000 people. Suppose that each year the population grows by 7.75%. What will the population be aft

emmasim [6.3K]

Answer:

$\large\boxed{\sf \ \ \ 404,699 \ \ \ }$

Step-by-step explanation:

Hello,

At the beginning the population is 240,000

After 1 year the population will be

240,000*(1+7.75%)=240,000*1.0775

After n years the population will be

$240,000\cdot1.0775^n$

So after 7 years the population will be

$240,000\cdot1.0775^7=404699.058...$

So rounded to the nearest whole number gives 404,699

Hope this helps

7 0

4 years ago

What is the height of the tree in the image below? 10 points Wall 4 6 ft 24 O I foot O 36 foot None of the above

Zinaida [17]

16 ft

Explanation

Step 1

because the ligth comes in the same angle, we have 2 similar triangles .

so,as the triangles are similar,the ratio of the shorter leg to the bigger leg must be equal.

$\begin{gathered} ratio=\frac{shorter\text{ leg}}{\text{bigger leg}} \\ ratio1=ratio2 \\ \frac{h}{24}=\frac{4}{6} \end{gathered}$

Step 2

solve for h

$\begin{gathered} \frac{h}{24}=\frac{4}{6} \\ \text{cross multiply} \\ 6\cdot h=4\cdot24 \\ 6h=96 \\ \text{divide boths} \\ \frac{6h}{6}=\frac{96}{6} \\ h=16 \end{gathered}$

therefore, the heigth of the tree is 16 ft

5 0

1 year ago

Choose the expanded form of this expression 4(1/4 a + b - 6)

zalisa [80]

Answer:

a+4b-24

Step-by-step explanation:

4(1/4a+b−6)

=(4)(1/4a+b+−6)

=(4)(1/4a)+(4)(b)+(4)(−6)

=a+4b−24

3 0

3 years ago

Asking again because last time I didnt get an actual answer. What is the surface area of this composite figure?

Katyanochek1 [597]

Answer:

644 cm^2

Step-by-step explanation:

10*7*2+12*7*2+12*10=140+168+120=428

10*12-3*3=111

428+111=539

8*3*4+3*3=96+9=105

539+105=644

3 0

3 years ago