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Find the sum of three positive integers such that the sum of their reciprocal is 2.
1 tháng 10 2021 lúc 22:02
Có ai giỏi môn Toán Tiếng Anh ko giúp mk dzới Alicia thinks of a number, n. She subtracts 3 them multiplies the result by 2Which of this expressions is the correct expressions for Alicias number? Explain your answer.A. n - 3 x 2 B. n - 6 C. 2(n - 3) D. 3 - n x 2 E. 2(3 - n)Giúp mk dzới, ngày 5/10 mk phải nộp
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Có ai giỏi môn Toán Tiếng Anh ko giúp mk dzới 
Alicia thinks of a number, n. She subtracts 3 them multiplies the result by 2
Which of this expressions is the correct expressions for Alicia's number? Explain your answer.
A. n - 3 x 2 B. n - 6 C. 2(n - 3) D. 3 - n x 2 E. 2(3 - n)
Giúp mk dzới, ngày 5/10 mk phải nộp
three lines dissect a big triangle into four triangles and three quadrilaterals. the sum of the perimeters of the three quadrilateral is 25 cm, the sum of the perimeters of the four triangle is 20 cm. the perimeter of the big triangle is 19 cm. how big is the sum of the lengths of the three dissecting lines?
Given two adjacent angles AOB and BOC. The sum of measure of them is equal to 160o and the measure of angle AOB is equal to 7 times the measure of angle BOC
a)Find the measure of each angle
b)Inside angle AOC, draw ray OD such that angle COD=90o. Prove that OD is the bisector of angle BOA.
c)Draw the opposite ray OC' of ray OC. Find the measure of 2 angles AOC and BOC' then compare them
Given two adjacent angles AOB and BOC. The sum of measure of them is equal to 160o and the measure of angle AOB is equal to 7 times the measure of angle BOC
a)Find the measure of each angle
b)Inside angle AOC, draw ray OD such that angle COD=90o. Prove that OD is the bisector of angle BOA.
c)Draw the opposite ray OC' of ray OC. Find the measure of 2 angles AOC and BOC' then compare them
The absolute value of 7.23 is ...
(Write your answer by decimal in the simplest form)
Trả lời bằng cả tiếng Anh và tiếng Việt các bạn nhé !
Câu 1 The function mm is defined on the real numbers by m(k) dfrac{k+2}{k+8}m(k) k+8 k+2 . What is the value of 10times m(2)10×m(2)? Answer: Câu 2 The function ff is defined on the real numbers by f(x) ax-3f(x)ax−3. What is the value of a if f(3)9f(3)9? Answer: Câu 3 The function ff is defined on the real numbers by f(x) 2x+a-3f(x)2x+a−3. What is the value of a if f(-5)11f(−5)11? Answer: Câu 4 The function ff is defined on the real numbers by f(x) 2 + x-x^2f(x)2+x−x 2 . What is the value of...
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Câu 1 The function mm is defined on the real numbers by m(k) = \dfrac{k+2}{k+8}m(k)= k+8 k+2 . What is the value of 10\times m(2)10×m(2)? Answer: Câu 2 The function ff is defined on the real numbers by f(x)= ax-3f(x)=ax−3. What is the value of a if f(3)=9f(3)=9? Answer: Câu 3 The function ff is defined on the real numbers by f(x)= 2x+a-3f(x)=2x+a−3. What is the value of a if f(-5)=11f(−5)=11? Answer: Câu 4 The function ff is defined on the real numbers by f(x) = 2 + x-x^2f(x)=2+x−x 2 . What is the value of f(-3)f(−3)? Answer: Câu 5 Given a real number aa and a function ff is defined on the real numbers by f(x)=-6\times|3x|-4f(x)=−6×∣3x∣−4. Compare: f(a)f(a) f(-a)f(−a) Câu 6 There are ordered pairs (x;y)(x;y) where xx and yy are integers such that \dfrac{5}{x}+\dfrac{y}{4}=\dfrac{1}{8} x 5 + 4 y = 8 1 Câu 7 Given a negative number kk and a function ff is defined on the real numbers by f(x)=\dfrac{6}{13}xf(x)= 13 6 x. Compare: f(k)f(k) f(-k)f(−k) Câu 8 Given a positive number kk and a function ff is defined on the real numbers by f(x)=\dfrac{-3}{4}x+4f(x)= 4 −3 x+4. Compare: f(k)f(k) f(-k)f(−k). Câu 9 A=(1+2+3+\ldots+90) \times(12 \times34-6 \times 68):(\dfrac{1}{3}+\dfrac{1}{4}+\dfrac{1}{5}+\dfrac{1}{6})=A=(1+2+3+…+90)×(12×34−6×68):( 3 1 + 4 1 + 5 1 + 6 1 )= Câu 10 Given that \dfrac{2x+y+z+t}{x}=\dfrac{x+2y+z+t}{y}=\dfrac{x+y+2z+t}{z}=\dfrac{x+y+z+2t}{t} x 2x+y+z+t = y x+2y+z+t = z x+y+2z+t = t x+y+z+2t . The negative value of \dfrac{x+y}{z+t}+\dfrac{y+z}{t+x}+\dfrac{z+t}{x+y}+\dfrac{t+x}{y+z} z+t x+y + t+x y+z + x+y z+t + y+z t+x is
A set of numbers (a1,a2,a3,.....,a 2015) has 2015 different numbers. The average of this set is 25. The average of the set (a1,a2,a3,.....,a 2015,25) is.........
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1. Complêt the sentences , using although , despite , in spite of , however , or nevertheless. Sometimes , two answears are possible.1. I think i did OK in my speech last night -------------------- Id had almost no sleep for 24 hours.2. ---------------------- I heard the telephone ring , I didnt answer it.3. We enjoyed our holiday ------------------- the rain.4. -------------------- he got top marks at high school , he never went to university.5. -------------------------- there was no electrici...
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1. Complêt the sentences , using although , despite , in spite of , however , or nevertheless. Sometimes , two answears are possible.
1. I think i did OK in my speech last night -------------------- I'd had almost no sleep for 24 hours.
2. ---------------------- I heard the telephone ring , I didn't answer it.
3. We enjoyed our holiday ------------------- the rain.
4. -------------------- he got top marks at high school , he never went to university.
5. -------------------------- there was no electricity , I was able to read because I had a candle.
6. She failed the test ------------------ she studied hard.
7. --------------------- difficulties , the firemen managed to save many people who were caught in the fire.
8. Everone thought she would accept the offer . -----------------------, she turned it down.
9. Carol arrived at the meeting --------------------- I asked her not to be there.
10. It looks like they're going to succeed------------------ their present diffculties.
11. ---------------------- it was raining heavily , he went out without a raincoat.
12. My father is very busy.--------------------------, he is always willing to give a hand with the housework.
13. The sky was grey and cloudy .----------------------- , we went to the baech.
14. Some Englis words have the same pronuncation--------------------- they are spell differently , for example , dear and deer.
2. Put question for the underlined part of each sentence: CHỮ IN HOA LÀ PHẦN GẠCH CHÂN NHÉ!
1. I have known Marie FOR NINE YEARS.
2. YES , they used to be friends at the university.
3. Sarah left TWO HOURS AGO
5. She is watching TOM AND JERRY.
GIÚP MK VS , MK ĐANG CẦN RẤT GẤP , MAI MK PHẢI NỘP BÀI RỒI . HELP ME!!!!!!!