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3 years ago

Kelly Puts $350 in a savings account. The savings account Pinale

Mathematics

1 answer:

Tomtit [17]3 years ago

8 0

Answer: $375.725

Step-by-step explanation:

A=$350*1.05%*7 month

350* 0.0105*7= 25.725 will be the interest by 7 month

Add to the amount in the account

350+25.725= $ 375.725

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Prove the identity secxcscx(tanx+cotx)=2+tan^2x+cot^2x

svetlana [45]

Hello,

$sec(x)= \dfrac{1}{cos(x)} \\

cosec(x)= \dfrac{1}{sin(x)} \\

sec(x)*cosec(x)*(tg(x)+cotg(x))=\dfrac{1}{cos(x)}* \dfrac{1}{sin(x)}*( \frac{sin(x)}{cos(x)} +\frac{cos(x)}{sin(x)})\\

= \dfrac{sin^2(x)+cos^2(x)}{sin^2x*cos^2x} \\

= \dfrac{1}{sin^2x*cos^2x} \\

$
==============================================================
$2+tg^2(x)+cotg^2(x)=2+ \dfrac{sin^2x}{cos^2x} + \dfrac{cos^2x}{sin^2x} \\

=2+ \dfrac{sin^4x+cos^4x}{sin^2x*cos^2x} \\

=\dfrac{2*sin^2x*cos^2x+sin^4x+cos^4x}{sin^2x*cos^2x} \\

= \dfrac{(sin^2x+cos^2x)^2}{sin^2x*cos^2x}} \\

= \dfrac{1}{sin^2x*cos^2x}} 
$

8 0

3 years ago

Read 2 more answers

HELP ASAP!!!!! 25 POINTS!!!!!!!! AND WILL GVE BRAINLIEST!!!!!!!!!

Volgvan

• Im sorry but we doesnt know the x number :( but dont worry to plot the diagram:

- substitute the number x (given) into the equation f(x)

- example: f(x) = x + 9 / x - 3

- then x given is 4

- therefore, f(x) = (4) + 9 / (4) - 3

- f(x) = 13 / 1 or 13

- then you plot at 13 on the graph :)

hope this helps ;/

7 0

3 years ago

4 .3<br> is V = πr³, wh<br> 3 <br> what is the formula in terms of r? please help

MakcuM [25]

The rearranged formula for volume in terms of radius,r is $\sqrt[3]{\frac{V}{\pi } }$ .

What is volume?

Volume is a measure of enthralled three-dimensional space.
It's frequently quantified numerically using SI-deduced units or by colorful Homeric units( similar to the gallon, quart, boxy inch).
The description of length( cubed) is interrelated with volume. The volume of a vessel is generally understood to be the capacity of the vessel; i.e., the quantum of fluid( gas or liquid) that the vessel could hold, rather than the quantum of space the vessel itself displaces.
In ancient times, volume is measured using analogous-structured natural holders and latterly on, standardized holders.
Some simple three-dimensional shapes can have their volume fluently calculated using computation formulas.
Volumes of more complicated shapes can be calculated with integral math if a formula exists for the shape's boundary.

Volume, V = $\pi r^3$

Rearranging,

r = $\sqrt[3]{\frac{V}{\pi } }$

The rearranged formula for volume in terms of radius,r is $\sqrt[3]{\frac{V}{\pi } }$ .

Learn more about volume here:

brainly.com/question/1972490

#SPJ9

3 0

2 years ago

Michael has two jobs. He earns $9.25 per hour at a pet store and earns $8.90 per hour at a telemarking job. If p represents the

12345 [234]

Answer:

9.25 p + 8.90 t ≥ 100 describes the relationship between p and the t for Michael to earn at least $100.

Step-by-step explanation:

p = Number of hours worked at the pet store

Earning per hour at pet store = $9.25

t = Number of hours worked as a telemarketer

Earning per hour at telemarketing job = $8.90

Now, total amount earned at pet store after working p hours = p x $9.25

and total amount earned at tele job after working t hours = t x $8.90

Now, according to the question

Total money earned at pet store + Total earning at telemarketing job = At least $100

⇒ 9.25 p + 8.90 t ≥ 100

Hence, 9.25 p + 8.90 t ≥ 100 describes the relationship between p and the t .

5 0

3 years ago

Evaluate: f(x) = 2x^2 + 6x - 4; f(-5) *

BabaBlast [244]

$f(x)=2x^2+6x-4$

Find the f(-5) by substituting x = -5 in the equation.

$f(-5)=2(-5)^2+6(-5)-4\\f(-5)=2(25)-30-4\\f(-5)=50-34\\f(-5)=16$

Therefore, the answer is f(-5) = 16.

7 0

3 years ago