Sandy's orchard has only apple trees and pear trees and she is wanting to add some avocado trees. currently, there are 4 apple trees for every 3 pear trees. she is wanting to plant enough avocado trees so that she has 2 avocado trees for every 5 pear trees in the orchard.. sandy is planting 18 avocado trees, making the ratio of avocado trees to apple trees be to

The ratio is 3:10.

Step-by-step explanation:

Sandy's orchard has only apple trees and pear trees.

There are 4 apple trees for every 3 pear trees.

She is wanting to plant enough avocado trees so that she has 2 avocado trees for every 5 pear trees in the orchard.

Sandy is planting 18 avocado trees, when we have 2 avocado trees for every 5 pear trees

Then we have 1 avocado trees for every 2.5 pear trees.

Therefore, if we have 18 avocado trees then we will have = 45 pear trees

Also, we have 4 apple trees for every 3 pear trees.

So, for 1 pear tree we have apple trees.

Lastly, if we have 45 avocado trees then we will have or rounding to 60 apple trees.

Hence, the ratio of avocado to apple trees = =

The ratio is 3:10.

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

pls mark as brainliest

ratios represent a pattern or relationship that can be scaled.

equivalent ratios are pairs of ratios that represent the same relationship between quantities, and can be generated by multiplying or dividing both quantities in the ratio by the same factor.

in this lesson, students will use double number lines and ratio reasoning to solve ratio problems. by partitioning double number lines into proportionate intervals, students will build an understanding of equivalent ratio relationships as those that are generated by multiplying or dividing two related quantities by the same number. this lesson will build upon students' prior understanding of multiplicative comparisons, number line reasoning and equivalent fractions (while highlighting the difference between equivalent fractions and equivalent ratios); and will build toward future work in this unit on building ratio tables, and work in future grades in proportionality, scaling, and expressing and graphing linear functions.

step-by-step explanation:

ratios represent a pattern or relationship that can be scaled.

equivalent ratios are pairs of ratios that represent the same relationship between quantities, and can be generated by multiplying or dividing both quantities in the ratio by the same factor.

in this lesson, students will use double number lines and ratio reasoning to solve ratio problems. by partitioning double number lines into proportionate intervals, students will build an understanding of equivalent ratio relationships as those that are generated by multiplying or dividing two related quantities by the same number. this lesson will build upon students' prior understanding of multiplicative comparisons, number line reasoning and equivalent fractions (while highlighting the difference between equivalent fractions and equivalent ratios); and will build toward future work in this unit on building ratio tables, and work in future grades in proportionality, scaling, and expressing and graphing linear functions.