регистр
Авторизоваться
Имя пользователя
пароль
Авторизоваться
Забыли пароль?
Главная
Форум
+0
формула
математика
Помогите
Комплексные числа
дифференциальное исчисление
дифференциальное исчисление
Уравнения
Функция Графики
Линейная алгебра
Теория чисел
Проценты
стандартные функции
вероятность
Тригонометрия
Преобразование единиц
Единицы
Около
выходные данные
политика конфиденциальности
Условия использования
кредиты
Google+
Facebook
Почта для связи
tomtom
Имя пользователя
tomtom
Гол
1791
Membership
Stats
Вопросов
414
ответы
15
478 Questions
15 Answers
0
3
0
+1791
coordinates
A line and a circle intersect at $A$ and $B,$ as shown below. Find the distance between $A$ and $B$.
The line is x = 4, and the equation of the circle is x^2 + y^2 = 25.
tomtom
24 апр. 2024 г.
0
3
0
+1791
coordinates
Let $k$ be a positive real number. The line $x + y = 3 + k$ and the circle $x^2 + y^2 = k$ are drawn. Find $k$ so that the line is tangent to the circle.
tomtom
24 апр. 2024 г.
0
2
0
+1791
Coordinates
Two circles intersect at two points, $P$ and $Q$. The equations of the two circles are $x^2 + (y - 1)^2 = 1$ and $(x - 1)^2 + y^2 = 1$. Find the length PQ.
tomtom
24 апр. 2024 г.
0
4
0
+1791
coordinates
Point $A$ is reflected over the line shown below to point $B$. Find the coordinates of $B$.
Write your answer as an ordered pair $(x,y)$.
The line is y = x + 3, and A = (7,1).
tomtom
24 апр. 2024 г.
0
4
1
+1791
help with coordinates
The graph of the equation
4x^2 - 12x + 4y^2 + 16y + 17 = -4x + 2y + 5
is a circle. Find the radius of the circle.
●
tomtom
24 апр. 2024 г.
0
2
0
+1791
Help geometry
In triangle PQR, M is the midpoint of \overline{QR}. Find PM.
tomtom
10 апр. 2024 г.
0
3
0
+1791
Need help
In the diagram below, SR = PQ = 20 and RT:TS = 2:5. Find UV.
tomtom
10 апр. 2024 г.
0
4
0
+1791
Help trapezoid
Trapezoid $ABCD$ is inscribed in the semicircle with diameter $\overline{AB}$, as shown below. Find the radius of the semicircle. Find the area of ABCD.
PQDC is a square.
прочитайте больше ..
tomtom
10 апр. 2024 г.
0
3
0
+1791
Help plz
Points $L$ and $M$ lie on a circle $\omega_1$ centered at $O$. The circle $\omega_2$ passing through points $O,$ $L,$ and $M$ is drawn. If the measure of arc $LM$ in circle $\omega_1$ is $90^\circ,$ and the radius of $\omega_1$ is 1, then find
прочитайте больше ..
tomtom
10 апр. 2024 г.
0
5
1
+1791
Constant term
Find the constant term in the expansion of (2z - 1/sqrt(z))*5*(z - 1/sqrt(z))^3.
●
tomtom
31 мар. 2024 г.
0
4
0
+1791
System
Let a and b be real numbers such that a^3 + 3ab^2 = 679 and 3a^3 - ab^2 = 615. Find a - b.
tomtom
31 мар. 2024 г.
0
6
1
+1791
Coefficient
Expand (x^2 + 1/x)*(x + x^4)^3.
●
tomtom
31 мар. 2024 г.
0
2
1
+1791
Expand
Expand (x^2 + 1/x)*(x + x^4)^3.
●
tomtom
31 мар. 2024 г.
0
3
1
+1791
counting
Annville Junior High School has a math club and a science club. There are $3$ students in the math club and $3$ students who are members of both clubs. There are twice as many students in the science club as in the math club. Find
прочитайте больше ..
●
tomtom
30 мар. 2024 г.
0
3
1
+1791
counting
Annville Junior High School has a math club and a science club. There are $3$ students in the math club and $3$ students who are members of both clubs. There are twice as many students in the science club as in the math club. Find
прочитайте больше ..
●
tomtom
30 мар. 2024 г.
0
2
1
+1791
help geometry
An isosceles triangle has side lengths $8$ cm, $10$ cm and $10$ cm. The longest side of a similar triangle is $20$ cm. What is the perimeter of the larger triangle, in centimeters?
●
tomtom
30 мар. 2024 г.
0
2
1
+1791
Algebra
Let a_1, a_2, a_3, \dots be a sequence. If
a_n = a_{n - 1} + a_{n - 2}
for all n \ge 3, and a_{11} = 4 and a_{10} = 1, then find a_6.
●
tomtom
25 мар. 2024 г.
0
4
1
+1791
Algebra
A plane flies from Penthaven to Jackson and then back to Penthaven. When there is no wind, the round trip takes 4 hours and 36 minutes, but when there is a wind blowing from Penthaven to Jackson at 40 miles per hour, the trip takes 5 hours. How many
прочитайте больше ..
●
tomtom
25 мар. 2024 г.
«
последний
46
45
..
2
1
»
«
последний
0
-1
2
последний
»