All categories

3 years ago

Please help and explain it would be very helpful

Mathematics

1 answer:

iris [78.8K]3 years ago

6 0

So for the first one think of it as decimals so it’s easier: 9.20-7.35, subtract and it would be 1.85 so since we use decimals to make it easier it isn’t actually a decimal so it would be 2 hours and 25 minutes. And for the second one you just add 50 minutes to that and you would get 3 hours and 15 minutes.

You might be interested in

Decrease £16870 by 3% Give your answer rounded to 2 Decimal places please hurry im in a rush!!

Arturiano [62]

Answer:

$16,363.9

Step-by-step explanation:

16870 x 0.03 = 506.1

16870 - 506.1 =

8 0

2 years ago

I need help with this [ p+9 ]= 11

attashe74 [19]

[ p+9 ]= 11

pretend that there is a +1 in front of the bracket

1 [ p+9 ]= 11

multiply the bracket by 1

(1)(p)=p

(1)(9)=9

p+9=11

move +9 to the other side

sign changes from +9 to -9

need to get p by itself

p+9-9=11-9

p=11-9

answer:

p=2

7 0

2 years ago

Sophia has three stickers for every two stickers that Ethan has. If Sophia gives Ethan 16 of her stickers, then Ethan will have

olga_2 [115]

Answer:

Step-by-step explanation:

Let s represent the number of stickers Sophia has. Then the number Ethan has is (2/3)s. The transfer of 16 stickers can be described by the equation ...

(s -16)/(2/3s +16) = 1/2 . . . . . sophia/ethan = 1/2 after the transfer

2s -32 = 2/3s +16 . . . . . . . . .cross multiply

4/3s = 48 . . . . . . . . . . . . . . . add 32-2/3s

s = (48)(3/4) = 36 . . . . . . . . .multiply by 3/4

Together, the total number of stickers held is s +(2/3)s = (5/3)s.

5/3s = (5/3)(36) = 60 . . . . . total of Sophia's and Ethan's stickers

Together, Sophia and Ethan have 60 stickers.

7 0

2 years ago

a businesswoman sells a bag for $52.32, thereby making a profit of 9% on the cost of her. calculate the selling price the busine

Veronika [31]

Answer: $57.6

Step-by-step explanation:

Given : A businesswoman sells a bag for $52.32.

Let cuurent selling price : SP = $52.32

As they are making 9% profit now.

That means SP= Cp +0.09 CP , where Cp is the cost price of bag.

i..e $52.32=Cp(1+0.09) \ \text{[Substituted value of SP in LHS and taking Cp common outside in RHS]}$

$\Rightarrow\ 52.32=Cp(1.09)\Rightarrow\ CP=\dfrac{52.32}{1.09}=48$

i..e Cost price of bag = 48

Selling price to gain 20% profit = Cp+0.20CP

= CP(1+0.20)

=48 (1.20)

= 57.6

Hence, the selling price the businesswoman should ask in order to make 20% profit = $57.6

8 0

2 years ago

A web music store offers two versions of a popular song. The size of the standard version is 2.3 megabytes (MB). The size of the

Effectus [21]

answer

240 standard versions

set up equations

s = number of standard versions

h = number of high quality versions

the total size of all standard versions would be 2.3s since each standard version is 2.3 MB

the total size of all high quality versions would be 4.4h since each standard version is 4.4 MB

add them together to get the total size (2664 MB) of all versions

2664 = 2.3s + 4.4h

since the high quality version was downloaded twice as often as the standard, we can say that

h = 2s

substitute h into equation and solve

2664 = 2.3s + 4.4h

h = 2s

2664 = 2.3s + 4.4(2s)

2664 = 2.3s + 8.8s

2664 = 11.1s

s = 2664/11.1

s = 240

7 0

3 years ago

Please help and explain it would be very helpful​

Please help and explain it would be very helpful