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2 years ago

1. Conrad wants to conduct a survey of students at his middle school to

Mathematics

2 answers:

serg [7]2 years ago

3 0

Answer:

Asking 50 people entering the cafeteria and Asking 120 randomly-selected students.

Step-by-step explanation:

Asking 10 students from a 7th grade class is not impartial as all subjects are from a singular small group inside of the student body as a whole.

Otrada [13]2 years ago

3 0

120 took the test got a 80

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The teacher drew 2 triangles, 4 squares, and 6 circles on the board. What 10 points

Orlov [11]

Answer:

The answer is 22

Step-by-step explanation:

you have 2 triangles and 4 squares so you equal them up together and you have 22 HOPE THIS HELPS:)

8 0

3 years ago

Simplify or factor each expression and then match the equivalent expressions

Vaselesa [24]

Answer:

Step-by-step explanation:

1. $4(2x^{2}+3y^{2})^{2}$

= $4(4x^{4}+9y^{4}+12x^{2}y^{2})$

= $16x^{4}+36y^{4}+48x^{2}y^{2}$

2. $4(2x^{2}+3y^{2})(2x^{2}-3y^{2})$

= $4((2x^{2})^{2}-(3y^{2})^{2})$

= $4(4x^{4}-9y^{4})$

= $16x^{4}-36y^{4}$

3. $(4x-5)(16x^{2}+20x+25)$

= $64x^{3}-80x^{2}+80x^{2}-100x+100x-125$

= $64x^{3}-125$

5 0

3 years ago

Can you help me with this

densk [106]

Answer:

158 is greater than 150

For #1 :

Student B can type 8 more words per minute than student A

For #2 :

You divide the last y value by the last x value : 700/5

700/5=140

For # 3 :

1. Student B - 158 words per minute

2. Student A - 150 words per minute

3. Student C - 140 words per minute

8 0

2 years ago

Justin bought some yarn from his favorite craft store. He can make one scarf with 3/5 of a ball of yarn. If he purchases 15 ball

Elena L [17]

He can make 25 scarves from 15 balls of yarn.

Step-by-step explanation:

Given,

Yarn used for one scarf = $\frac{3}{5}$ of a ball

Yarn purchased = 15 balls

Let,

x be the number of scarves.

Yarn used for one scarf*number of scarves = Yarn purchased

$\frac{3}{5}x=15$

Multiplying both sides by $\frac{5}{3}$

$\frac{5}{3}*\frac{3}{5}x=15*\frac{5}{3}\\x=\frac{75}{3}\\x=25$

He can make 25 scarves from 15 balls of yarn.

Keywords: fraction, multiplication

Learn more about fractions at:

#LearnwithBrainly

8 0

3 years ago

Point S is between points R and T. Given that<br> RS ST and RS = 16, what is RT?

neonofarm [45]

Answer:

Step-by-step explanation:

Reason: point S is between points are and t

Meaning that Line RS≅ST

So if RS=16 then ST=16

To find RT we just add ST and RS

16+16=32

Therefore RT=32

hope this helps :)

6 0

2 years ago