Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. DELSU
  4. /
  5. Mathematics
  6. /
  7. 2021/2022
  8. /
  9. Q16
Question 16

Three numbers x, y and z are connected by the relationships y = 4/9x + 1 and z = 4/9y + 1. If x = 99, find z.

  • A.61/3
  • B.20
  • C.21
  • D.176/9
  • E.None of the above
Objective

Question details

Exam body
DELSU
Subject
Mathematics
Year
2021/2022
Question no.
#16
Type
Objective
Previous · Q15Find the product of (2√y— 3y) and (3y + 2√y) Next · Q17 If $$(4)^{2x - 2}$$ = 243(2.3)^5, then x has the value

More from this paper

  • Q12Find the standard deviation of the numbers 1, 7, 6, 3, 4, 5, 2, 8, 9
  • Q13Find the arithmetic mean of the following numbers 30, 32, 34, 36, 38, 40, 42
  • Q14Five years ago, a father was 3 times as old as his son. Now, their combined ages…
  • Q18Solve without using tables $$log_{10}150 - log_{10}(\frac12)$$
  • Q19A rectangular picture 7cm by 9cm is enclosed by a frame 1/2cm wide. Calculate…
  • Q20If sin x equals cosine x, what is x in radians?
See all Mathematics 2021/2022 questions
Teacha

Africa's learning & exam readiness platform. Built for students, tutors, and schools.

Platform

  • Courses
  • Mock Exams
  • Past Questions

For You

  • I'm a Tutor
  • I'm a School
  • Pricing

© 2025 Teacha. Built for African learners, tutors, and schools. Teacha is not affiliated with WAEC, NECO, or JAMB. All past questions are sourced from publicly available materials.

Privacy PolicyTerms of UseCookie Policy