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3 years ago

PLZ HELP EVERYTHING IS IN THE PIC.

Mathematics

1 answer:

jek_recluse [69]3 years ago

7 0

Equation: (70 + 70*.05) + (580 + 580*.07) + (620 + 620*.10) = Total Spent

Solving for this gets you $1320.30.

You might be interested in

If 12 is replaced with 3 in the following set, what will happen to the value of the range? 28, 45, 12, 34, 36, 45, 19, 20

anzhelika [568]

The range is the number of units between the smallest and largest number. organising your numbers from smallest to largest:

12, 19, 20, 28, 34, 36, 45, 45

in your case 12 is the smallest number of your set. lowering it to 3 would increase the distance between the two numbers, therefore increasing the range

hope that helps :)

3 0

3 years ago

Read 2 more answers

which of the following temperatures is most precise? A) 45 degrees. B) 89.7 degrees. C) 80 degrees. D) 32.45 degrees

xxTIMURxx [149]

32.45 is most precise . Precise means how many points after decimal is reached. Accurate means how close your measurement of a value is that to the true value. Eg :Say 35cm is the measure of length of a body and a person got the measurement to be 34 . Another person2 got the measurement to be 32.88 . So in this case the first person has an accurate answer as he is close to the true value 35 , but person2 is more precise as he has two decimal places.

6 0

3 years ago

40 POINTS PLEASE HELP

kogti [31]

You’re gonna use the midpoint formula to find the radius: (1+7/2, 2-6/2) and get (4,-2). Now you use the distance formula to find the radius which would be √(1-4)^2 + (2-(-2)^2 and get 5 (√= square root of). Now you plug that into the circumference equation C= 2 x pi x 5 and get 31.4 units. Sorry that took me so long and hope this helps you out!!

7 0

3 years ago

What is the sum of the infinite geometric series?

12345 [234]

Answer:

- 288

Step-by-step explanation:

The n th term of a geometric series is

$a_{n}$ = a $r^{n-1}$

- 144 $(\frac{1}{2}) ^{n-1}$ is in this form

with a = - 144 and r = $\frac{1}{2}$

$S_{infinity}$ = $\frac{a}{1-r}$ = $\frac{-144}{1-\frac{1}{2} }$ = $\frac{-144}{\frac{1}{2} }$ = - 288

5 0

3 years ago

I need help knowing how to show the work and how to get the answer and the answer it self

Morgarella [4.7K]

Find the separate areas.

We have a triangle with base 5 cm and height 5 cm, calculate the area:

$\sf A=\dfrac{1}{2}bh$

Plug in what we know:

$\sf A=\dfrac{1}{2}(5)(5)$

Multiply:

$\sf A=12.5~cm^2$

Now for the two quarter circles, we know that if we put these two together we will end up with a semi-circle with radius 5 cm. The formula for the area of a circle is:

$\sf A=\pi r^2$

A semi-circle is half of a whole circle, so the formula for the area of it must be:

$\sf A=\dfrac{1}{2}\pi r^2$

Now plug in what we know(use 3.14 to approximate for pi):

$\sf A\approx\dfrac{1}{2}(3.14)(5)^2$

Simplify the exponent:

$\sf A\approx\dfrac{1}{2}(3.14)(25)$

Multiply:

$\sf A\approx 39.25~cm^2$

Now add this to the area of the triangle to find the approximate area of the entire figure(round to the nearest tenth):

$\sf 39.25+12.5=\boxed{\sf 51.8~cm^2}$

4 0

3 years ago