Số tự nhiên x để \(\frac{2n+4}{5}\) là số tự nhiên ?

Tìm x: 46.54-2.6*x=38.428

CMR: x5-x+2 không là số chính phương vs \(\forall\)x\(\in\)Z+

Tìm chữ số tận cùng của tổng T = 23 + 37 + 411 + ... + 20048011.

Ai nhanh mình tick :D

Lấy điểm B nằm giữa hai điểm A và C, điểm D nằm giữa hai điểm B và C,điểm O nằm ngoài đường thẳng AC. Tính \(\widehat{BOD}\)biết \(\widehat{AOD}=110^o\) và \(\widehat{AOB}=60^o\)

tìm n thuộc z để A là 1 số nguyên : A= n+ 7 phần n-4

Cho 2013 số nguyên, trong đó 4 số nguyên bất kì luôn có tích là số nguyên âm. Hỏi tích của 2013 số nguyên đó là số nguyên dương hay là số nguyên âm? Giải thích vì sao em lại chọn câu trả lời đó?

1 người đi xe máy hết 1 đoạn đường với vận tốc bằng \(26\dfrac{1}{4}\)kmhttps:https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.LogaVN.nethttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.imagehttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.faqhttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.data2https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.775362_.giờ hết 2,4 giờ. Lúc về người ấy đi với vận tốc bằng 30kmhttps:https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.LogaVN.nethttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.imagehttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.faqhttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.data2https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.775362_.giờ. Tính thời gian người ấy đi về

Tính:
Trả lời:

Tìm x,y,z biết

\(\dfrac{x}{3}\)=\(\dfrac{y}{4}\)=\(\dfrac{z}{5}\) và xyz=60