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topjm [15]
3 years ago
6

Isabel is 11 years old. This is 3 years more than twice her brother's age. How old is Isabel's brother? Let b = Isabel's brother

's age.
Mathematics
2 answers:
Softa [21]3 years ago
6 0
Pls mark me brainliest if this helps. The answer would be 4 years old
Iteru [2.4K]3 years ago
3 0
The answer would be 4 years old
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There are 300 apples and peaches for sale at a farmers market. The ratio of the number of apples to the number of peaches is 7:8
Sidana [21]

Answer:

The ratio of the reaming apples to peaches is 3 : 4

Step-by-step explanation:

* Lets solve the problem

- There are 300 apples and peaches

- The ratio of the number of apples to the number of peaches is 7 : 8

- To find the the numbers of apples and peaches add the terms of the

  ratio and then divide the total number of apples and peaches by this

  sum and then multiply each terms of the ratio by this quotient

∵ The ratio of apples to peaches = 7 : 8

∴ apple : peach : sum

      7     :     8    :    15

       ?    :       ?    :    300

∴ The number of apples = (300 ÷ 15) × 7 = 20 × 7 = 140 apples

∴ The number of peaches = (300 ÷ 15) × 8 = 20 × 8 = 160 peaches

- 50 apples and 40 peaches are sold

∴ The remaining number of apples = 140 - 50 = 90 apples

∴ The remaining numbers of peaches = 160 - 40 = 120 peaches

- To find the ratio simplify the numbers to its simplest form

∵ There are 90 apples and 120 peaches

∴ apple : peach

      90  :   120      ⇒ divided both by 10

∴       9  :    12       ⇒ divide both by 3

∴       3  :     4    

∴ The ratio of the reaming apples to peaches is 3 : 4

4 0
3 years ago
Lisa runs 3 miles in 28 minutes. At the same rate, how many miles would she run in 42 minutes? How do I solve???
xxMikexx [17]

Answer:

About 4.5

Step-by-step explanation:

First, divide 28 by 3, round to closest number (2 numbers after the decimal) then take 42 divided by that number (9.33), and you get about 4.5

Hope this helped!

8 0
3 years ago
I need estimate then record the product
creativ13 [48]
Round and then see what the number you have too add, subtract , multiply, and divide and then you would find the answer
8 0
3 years ago
Tickets to the school play cost $4.50 for adults and $3.00 for students. One night 325 tickets where sold and 1140 was collected
algol13
4.50x+3x=1140
You will add 4.50 and 3 together to get 7.5.
your equation is now...
7.50x=1140
you divide by 7.5 and get 152. so x= 152.
I am stuck now.
8 0
3 years ago
Read 2 more answers
What is the correct number below?
raketka [301]
I guess ot is 4181 !!
7 0
3 years ago
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