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olga_2 [115]
3 years ago
6

Jamie and Erika were in a race. Jamie could run 15 meters per second. Erika could only run 10 meters per second. So Jamie decide

d to give Erika a head start of 5 meters. After how many seconds will the two girls meet?
Mathematics
2 answers:
7nadin3 [17]3 years ago
7 0

Answer: 1 s

Step-by-step explanation:

Given

Jamie speed is 15 m/s

Erika speed is 10 m/s

Erika has a 5 m head start

For Jamie to catch Erika, Jamie must travel 5 m + the distance traveled by Erika in the same time t

After 1 s, Jamie and erika meet at the same point.

crimeas [40]3 years ago
4 0

Answer: 1 s

Step-by-step explanation:

Given

Jamie speed is 15 m/s

Erika speed is 10 m/s

Erika has a 5 m head start

For Jamie to catch Erika, Jamie must travel 5 m + the distance traveled by Erika in the same time t

\therefore 15t=5+10t\\\Rightarrow15t-10t=5\\\Rightarrow 5t=5\\\Rightarrow t=1\ s

After 1 s, Jamie and erika meet at the same point.

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Each sister bought a gift for their mom. Maggie spent 3 times as much as Karen. Karen spent half as much as Jasmine. Altogether,
snow_tiger [21]

Answer:

Maggie spent =30

Karen spent = 10

Jasmine spent =20

Step-by-step explanation:

In this we use algebra to solve.we give the sisters unknowns, to help us solve the equation.

we dont know how much jasmine used so we give her the unknown x.you can use any letter but ill us x.

karen used half as much as karen so we give her 1/2x because it was half of jasmine.maggie used 3 times that of karen so w give her 3(1/2x).

maggie =3(1/2x)

Karen =1/2x

jasmine =x

3(1/2x) + 1/2x + x = 60

3/2x + 1/2x + x = 60

2x + x = 60

3x=60

x=20

where we have x =we replace with 20

e.g karen 1/2x => 1/2 x 20 =10

if you need any clarifications please do tell me in the comment section.i would like to help more if you need help.thx

     Hope this helps and if it does mark as branliest anwer thx

6 0
3 years ago
Use the rectangle below to answer both parts of the question.
trasher [3.6K]

Answer:

part 1= "72=(2w)+(w-15)"

part 2= "29"

I'm not sure if they want "w = abc"

I used that equation to solve part 2

Hope this helps you, I've been where you are

6 0
3 years ago
Graph the solution to this inequality on the number line.<br> 2x – 6 &gt; -16 and 3x – 10 &lt; 8
dusya [7]

Answer:

2x-6=-16 and 3x- 10=8

Step-by-step explanation:

2x=-16+6 and 3x=8+10

2x=-10 and 3x=18

2x/2=10/2 and 3x/3=18/3

x=5 and X=6

7 0
3 years ago
A cone has a height of 17 centimeters. What is its volume? Use n 3.14
skad [1K]

Answer:

444.83

Step-by-step explanation:

volume of a cone is given by the formula pi × r^2 × h × 1/3

by implementing the formula we get the answer which is 444.83

make sure to ask if you need any further guidance :)

8 0
2 years ago
I need help! Will mark brainliest!
Musya8 [376]

Answer:

16) 6%

17) 4 years

18) 2 years

Step-by-step explanation:

The formula for these questions is I = PRT

16) 27 = 900 (R) (0.5)

Notice how I used 0.5 instead of 6 for the T. T has to be measured in years, not months and 6 months is half a year.

R = 0.06 = 6 %

17) 480 = 2000 (0.06) (T)

T = 4 years

18) 1080 = 4500 (0.12) (T)

T = 2 years

4 0
3 years ago
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