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Svet_ta [14]
3 years ago
12

15. Mr Muthu bought some apples and oranges. The price of the fruits were as shown below. Fruit Price Apples 60¢ each Oranges 80

€ aach The ratio of the number of apples bought to the number of oranges bought was 3:4. He spent $75 on the apples and oranges. How many apples did he buy?​
Mathematics
2 answers:
ozzi3 years ago
5 0

Answer:

Step-by-step explanation:

0.6*3t+0.8*4t=75

so t=15

apple=3t=45

orange=4t=60

qwelly [4]3 years ago
3 0

Answer:

 40

Step-by-step explanation:

you mutiply then take away the 2 last digits

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A reporter collects a random sample of 50 runners from all the runners who finished the Cherry Blossom Ten Mile Run in 2009 and
goldenfox [79]

Answer:

Option D

Step-by-step explanation:

A reporter collects a random sample of 50 runners from all the runners who finished the Cherry Blossom Ten Mile Run in 2009 and constructs a 99% confidence interval for the true mean finish time to be (86.05, 99.38) minutes.

Assuming the reporter performed the calculations correctly, which of the following statements are appropriate interpretations of this confidence interval?

We can expect that 99% of confidence intervals created using the same method the reporter used will contain the true mean run time for runners of this race.

4 0
3 years ago
On a trip, the Olsons drove 165 miles in 3 hours. They keep the same average speed the whole trip. Which proportion can be used
zheka24 [161]
165/3=55 mph

650/55=h
650/(165/3)=h
(650*3)/165=h
3/165=h/650
h/650=3/165

so it is the third option
3 0
3 years ago
Solve the system of equations using the substitution method.
Karolina [17]
Substitution is where we first Isolate one of the unknowns, express it in terms of the other unknown, and replace the isolated unknown with the other unknown in another equation. So that each time we only need to deal with one unknown. I think you'll get a better idea here:

First name these 2 equations with 1 and 2.
4x + 5y = 7 (1)
y = 3x + 9 (2)

Since y is already isolated in (2), so we can skip the isolation step and continue to substitute.

Substitute (2) into (1).
4x + 5(3x+9) = 7

Expand.
4x + 15x + 45 = 7

Group.
19x + 45 = 7

Shift +45 to the other side and turn it into -45.

19x = 7 - 45
19x = -38

Shift x19 to the other side, turn it into /19.
X = - 38/19
X = - 2

Now we solved x already, we can just substitute x= - 2 back to equation (2).

y = 3(-2) + 9
y = - 6 + 9
y = 3

So, the answers are
x = - 2
y = 3
3 0
2 years ago
Thanks i got it right
denpristay [2]

Answer:

got what right?

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Use the distributive property to solve 7 (x-2a-9)<br><br><br> WILL GIVE BRAINLIST TEEHEE!
koban [17]

Answer:

7x-14a-63

............

8 0
2 years ago
Read 2 more answers
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