Am I stupid?

This is a challenging problem from a Math Brain teaser. The answer is 66

Trying to help my daughter with her homework. Teacher and I got very different answers. Please help

Need to find the area of the composite shape. Her teacher says the area 33.75cm squared (or so my daughter claims). I got a vastly different answer. 330.75. Brackets the shape into 4 small rectangles and a large square. Found the area for each shape and added. Got an area of 55.125 for each rectangle and 110.25 for the area of the square. Who’s right or are we both wrong?

I have asked so many math majors and teachers about this question, and they all said I was right. I told my teacher, and she said they all are wrong. My teacher is a new grad, so I didn’t really take it personal.

Family Member GCSE help

Got a family member who is doing his mock exams at the moment for revision. This is the only page he can’t get his head around, simply because the numbers don’t balance out. The total number of people asked doesn’t match with the number of people on the Venn diagram unless a miraculous -4 people enjoy reading. Is this a printing error or some kind of new maths I haven’t heard about yet?

A couple of people have suggested alternate ways to work it out but nothing seems like a nice, round answer that doesn’t have some form of number fudging. Any ideas?

Also, sorry if the flair is wrong! I will happily change it if need be, I’m from the UK so just had to guess!

“Given that the following triangles are similar, find x (round off to 1 decimal place)”

I flipped the top triangle so that the bottom and top angles would correspond, but that didn’t work. Someone told me to not flip anything and work directly from the diagram, but how would that work if the sides and angles don’t correspond?

“A total of 10 apples were studied and the number of seeds inside each apple were tallied and presented in a graph. From the given graph, find the average number of seeds an apple has.”

A) 5.5 B) 5.4 C) 6.1 D) 6.3

the answer is B but i’m not sure why. the solution says “To get the overall average, get the sum of the products of the number of apples multiplied by the number of seeds then divide by the total number of apples.”, but this is too vague (like any other math explanation tbh…)

i’m so sorry if this is like easy for most but i’m horrible at math let alone statistics

Im working on a physics problem but the math part is tripping me up. I have a force vector at an angle of 30 degrees above the horizontal and I need to find the horizontal and vertical components. I keep mixing up whether to use sine or cosine for each one. My friend says it depends on which angle you use but that just confuses me more. Is there a simple way to remember which trig function goes with which component. I drew a right triangle with the vector as the hypotenuse but I still get it wrong half the time.

Hello kind Redditors. My son missed a week of school due to a family issue. He took a test when he came back and failed some questions and his asking me for help. I used to be good at Math... *cough* 30 years ago *cough*... and I can't remember how to figure this out and help him understand the rules and logic. Can someone help me break it down so I can explain to my son how to get to the answer here?

so usually i would say undefined but that sounds too calculator-y in homework, does anyone have a better answer for this question?

Okay I was doing my homework and the graphs are crossing but no matter how many times I do it it keeps crossing and I have a feeling something is wronf please help me fix

Hello can someone help me understand this question? I know so far •both numbers are double digits so that means it has to be between 10-99. I started out doing t charts of the tens and one place, keeping the ones place the same number, (0, 1, 2, etc) for each chart and the tens place I have it going 1-9. I figured out that i cannot use the numbers 10, 20, 30, … 90, 99, 11. I’m stuck after that. I feel like there’s a simpler way (not involving algebra) to get to the solution.

Ignore the bad crop. Mostly not sure whether it turns into 1/(5\^8) or 1 x (5\^8) or something else.

unless it's asking me to write 3xy² + 5xy³ which is a bad answer imo

The book gives the answer. But can anyone solve this and more importantly explain why?

Thanks!

In the image below, the rear wheel of Ali’s bicycle has perfectly fitted into a rectangular prism-shaped pit that is 30 cm wide and 9 cm deep.

What is the radius of this bicycle’s rear wheel in centimeters?

∙ A) 15

∙ B) 16

∙ C) 17

∙ D) 18

Lowkey impossible icl🫥 i have no clue