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3 years ago

Can someone please help me !!!

Mathematics

1 answer:

andreyandreev [35.5K]3 years ago

7 0

1) false
2) t is the independant variable, C is the dependant variable
3) true

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Simplify: 49 - 4 x 49 ÷ 7 21 34 36

enot [183]

Answer:

Step-by-step explanation:

49 - 4 x 49 / 7 =

49 - 196 / 7 =

49 - 28 =

Hope that helps!

5 0

3 years ago

Read 2 more answers

At 6:00 AM the temperature was 2 degrees Celsius. At 11:00 AMthe temperature was -11 degrees Celsius. By how many degrees Celsiu

bonufazy [111]

Answer:

-9

Step-by-step explanation:

Its dropping down from 2 to 0 so that is negative then the -11 so it would be -9.

6 0

3 years ago

Find the volume of the cone. Round your answer to the nearest tenth if necessary. Use 3.14 for it.

Korolek [52]

Answer:

452.448cm^3

Step-by-step explanation:

Given data

Height= 25cm

Diamter= 12cm

Radius= 6cm

The expression for the volume of a cone is given as

V= 1/3*πr^2h

Substitute

V= 1/3*3.142*6^2*25

V= 1/3*3.142*36*12

V= 1/3*1357.344

V=452.448cm^3

Hence the volume is 452.448cm^3

8 0

3 years ago

15 POINTS!!! HELP ASAP! Liz wants to write the phrase “the difference of seven and the number squared” as an algebraic expressio

deff fn [24]

Answer:

7-n^2 (#3)

Step-by-step explanation:

"the difference of" means subtract following number from preceding number in this case 7 from an unknown and it wants this number squared therefore 7 - n^2 is your answer

6 0

3 years ago

Jake had a piggy bank dipped with nickels quarters and dimes. He noted that he had three times as many dimes as quarters and fou

prohojiy [21]

Answer:

There are 72 dimes having a total value of $7.2.

Step-by-step explanation:

Let the number of dimes be 'd', nickels be 'n' and quarters be 'q'.

Given:

Number of dimes is three times quarters

Number of nickels is four less than twice the number of dimes.

Total amount in the piggy bank is $20.20

Now, as per question:

Number of dimes is three times quarters

Framing in equation form, we get:

$d=3\times q\\d=3q\\q=\frac{d}{3}---1$

Number of nickels is four less than twice the number of dimes.

Framing in equation form, we get:

$n=2d-4----2$

Now, value of 1 dime in dollars is 0.1.

Value 'd' dimes = $0.1d ----------(A)

Value of 1 quarter = $0.25

Value of 'q' quarters = $0.25q ----------(B)

Value of 1 nickel = $0.05

Value of 'n' nickels = $0.05n ----------(C)

Now, total amount is equal to the sum of all the amounts of each type of coin.

So, adding equations (A), (B) and (C) and equating to 20.20, we get:

$0.1d+0.25q+0.05n=20.20$

Now, using equations (1) and (2), the above equation can be rewritten as:

$0.1d+0.25(\frac{d}{3})+0.05(2d-4)=20.20\\\\0.1d+\frac{d}{12}+0.1d-0.2=20.20\\\\d(0.1+0.1+\frac{1}{12})=20.20+0.2\\\\0.2833d=20.40\\\\d=\frac{20.40}{0.2833}=72$

So, there are 72 dimes in the piggy bank.

Total value of 72 dimes = 72(0.1) = $7.2

3 0

3 years ago