Mathematics, 15.07.2020 14:01 amxndaboogie
1. In a quiz team A scored -30, 20, 40, -15 and team B scored -40, -20, 30,25 in four
sucoessive rounds. Which team scored more?
2. Write down a pair of integers whose:
a) Sum is -30
b) Difference is -15
c) Multiplication is 40
d) Multiplication is -40
3. Find the product using suitable properties
a) 25 x (-19) + (-19) x 5
b) (-81) x 20 + 81
c) 6 x (40 – 5)
d) (-125) x 29 x 4
e) (-19) x (-49)
4. Verify the following:
a) 15 x [8+(-2)] = 15 x 8 + 15 x (-2)
b) a= 28, b= 81, then a-(-b) = a+b.
5. In a class test containing 20 questions, 4 marks are given for every correct answer and (-2) marks are given for every incorrect answer. a) Evan attempts all questions but only 18 of her answers are correct. What is her total score? b) One of her friends gets only 10 answers correct. What will be her score?
6. Anna is a microbiology student. She was doing research on optimum temperature for the survival of different strains of bacteria. Studies showed that bacteria X need optimum temperature of -31⁰C while bacteria Y need optimum temperature of -56⁰C. What is the temperature difference?
Answers: 1
Mathematics, 21.06.2019 22:00
You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?
Answers: 3
Mathematics, 22.06.2019 00:00
If 7x=9y, y/z = 7/5 , then x/z = (a) 2/7 (b) 7/9 (c) 9/5 (d) 9/7 (e) 5/9
Answers: 1
Mathematics, 22.06.2019 02:00
Taylor graphs the system below on her graphing calculator and decides that f(x)=g(x) at x=0, x=1, and x=3. provide taylor with some feedback that explains which part of her answer is incorrect and why it is incorrect. f(x)= 2x+1 g(x)= 2x^2+1
Answers: 2
Mathematics, 22.06.2019 04:10
Is by a(-4, 2), b(-2, 4), c(1, 3), d(2, 2).of ofto . of d′ if90° to a′b′c′d′ (-2, 2) of c″ if90° to a″b″c″d″ (4, -2) of a′′′ if° to a′′′b′′′c′′′d′′′ (3, -1) of b″ if° to a″b″c″d″ (4, 2)
Answers: 1
1. In a quiz team A scored -30, 20, 40, -15 and team B scored -40, -20, 30,25 in four
sucoessive ro...
Mathematics, 16.12.2020 01:40
History, 16.12.2020 01:40
Advanced Placement (AP), 16.12.2020 01:40
Social Studies, 16.12.2020 01:40
Mathematics, 16.12.2020 01:40
Mathematics, 16.12.2020 01:40
History, 16.12.2020 01:40
Mathematics, 16.12.2020 01:40
Mathematics, 16.12.2020 01:40