Can someone please help with these two questions?

Answer:

For question 2, it is C) 3a.

For question 3, it is B) 3.

Step-by-step explanation:

For question 2, we are given that Mary's age is a and her mother's age is 3 times as old as Mary. The key word is "times" so this means that the expression can be written as 3a or 3 * a.

For question 3, the question asks for the greatest number that divides evenly into both 42 and 81. Using simple math, C and D automatically elliminates itself because one of the numbers divided gives a whole and the other gives a decimal. All is left is A and B. Obviously, a number divided by one will by itself so it stays even either way and the two numbers divided by 3 will give us two whole numbers and 3 is the greatest possible number so that concludes that it is B.

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need help with this question.

A researcher posts a newspaper advertisement offering $10 in exchange for participation in a short study. The researcher accepts the first 10 people who respond to the advertisement. Which of the following statements is true about the sample?

a It is not a valid sample because it is only a short study.

b It is a valid sample because money is offered to participants.

c It is a valid sample because the first 10 people were selected to participate.

d It is not a valid sample because it is not a random sample of the population.

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due today, almost midnight

can someone help with this please and thank you.

A rectangle as shown has a length of 0.9 centimeters and a width of 0.4 cm. A circle is drawn inside that touches the rectangle at two points.

What is the area to the shaded region in the rectangle.​

210 students were asked whether they want to go to a water park or a roller skating rink for a class party. 50 students are girls who want to go to the water park. 45 students are girls who want to go skating. 60 students are boys who want to go to the water park. Answer the questions to analyze the data. 1. Use the given information to fill in the two-way table. ‘a Water park Skating Total Boys 60 55 115 Girls 50 45 95 Total 110 100 210 2. How many boys want to go skating? 55 3. To the nearest hundredth, what is the relative frequency of boys who want to go to the water park? 4. The probability that a student is in a category can be approximated by the relative frequency. To the nearest hundredth, what is the probability that a randomly selected student is a girl who wants to go skating? Show how you know. 5. Are there more boy students or girl students? Do you read this information from the joint frequencies or the marginal frequencies? Explain how you know. 6. Which destination is more popular, the skating rink or the water park? Explain how you know.

what is the value of f ?

A teacher surveys 30 students on the the number of books they read over the summer.The data are represented in the box plot what is the median number of books read

What is the lateral surface I’m soooo close to passing the next grade I neeeed thissss

What is the median?
Points scored by the soccer team:
3, 7, 15, 10, 2, 9, 12, 5

Use the given scale factor and the side lengths of the scale drawing to determine the side lengths of the real object
Sewe factor 31 21 in Scale drawing Object

A. Side a is 24 inches long and side bis 21 inches long

B. Side ais 63 inches long and side bis 54 inches long

C. Side ais 7 inches long and side bis 6 inches long

D. Side a is 18 inches long and side bis 15 inches long​

I need help with this

what is the value of u ?

You have been reflecting about your relationship with math. How can thinking about yourself as a learner help you become a better student?

What are the zeros of the function?
f(x)
x^3 + 2x^2 – 35x/
X-3

Can someone help me with this question

The starting numbers and why are already entered in the table below the blanks and the table represent the next two terms for each of the patterns the pattern for the X values is add 2 the pattern for the Y values is add 4 which graph represents ordered ordered pairs of the first three terms of the patterns from the table?

Can someone please help me

GIVING BRAINLIEST ONLY IF 100% CORRECT-NO GUESSES NO LINKS

1) which expression is equivalent to 36x - 108 ?

a. 6(6x - 108)

b. 9(4x - 12)

c. 36(x - 108)

Evaluate the expression for the given value of the variable.

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I WILL REWARD BRAINLIEST

Fill in the question marks.
47=7 x ? + 4 x ?

Please help :)
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The character in our video multiplied the original value for black paint by 5 to get the new value for black paint. So, she also multiplied the original value for green paint by 5 to get the new value for green paint. There are multiplicative relationships, relationships related to multiplication, in a ratio table. To get from values for green and black in one ratio to values for green and black in another ratio, we can multiply both the initial values by the same number. For example, to get from the ratio 3:2 to the ratio 6:4, we multiply both the 3 and 2 by 2. And to get from the ratio 3:2 to the ratio 15:10, we multiply both the 3 and 2 by 5.

Sometimes, there are also relationships related to addition, called additive relationships, in a ratio table. To get from one value for green to another value for green, we can add 3. To get from one value for black to another value for black, we can add 2. When using the multiplicative relationship to find equivalent ratios, we can multiply both columns by the same number. But when using the additive relationship, we cannot add the same number to both columns.

A cookie mixture requires 3 teaspoons of sugar for every 4 teaspoons of salt. You want to triple the mixture. Which of these describes the ratio of teaspoons of sugar to salt you will use?

A
5:6

B
9:12

C
3:8

D
3:2

The legs of a right triangle are 15 feet and 18 feet long. What is the area of the triangle?

please help and all you can 1 to 9

REWARDING BRAINLY FOR CORRECT ANSWER