I NEED ANSWER ASAP!
Sadie is 3 years older than Kareem, and Kareem is twice as old as Nadra. T...
Mathematics, 20.02.2020 00:43 SavyBreyer
I NEED ANSWER ASAP!
Sadie is 3 years older than Kareem, and Kareem is twice as old as Nadra. The sum of their ages is 33.
A student used the steps below to find each person’s age.
Step 1-Write an equation, letting x represent Kareem’s age:
(x + 3) + x + 2 x = 33
Step 2-Solve the equation:
(x + 3) + x + 2 x = 33. 3 + 4 x = 33. 4 x = 30. x = 7 1/2.
Step 3-Sadie is 10 1/2, Kareem is 7 1/2, and Nadra is 3 3/4.
Which corrects the student’s first error?
1. In Step 1, the student should have used One-half x to represent Nadra’s age, and written the equation (x + 3) + x +1/2x = 33.
2. In Step 2, the student should have added 3 on both sides of the equation to find a solution of x = 9.
3. In Step 3, the solution represents Sadie’s age. Therefore, Sadie is 7 1/2, Kareem is 4 1/2, and Nadra is 2 1/4.
4. In Step 3, Nadra’s age is the difference between 33 and Sadie’s and Kareem’s ages, so Nadra is 15.
Answers: 1
Mathematics, 21.06.2019 14:00
The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.
Answers: 1
Mathematics, 21.06.2019 19:30
Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*
Answers: 2
Mathematics, 21.06.2019 21:00
A.s.a.! this is a similarity in right triangles. next (solve for x)a.) 12b.) 5c.) 12.5d.) [tex] 6\sqrt{3} [/tex]
Answers: 2
Mathematics, 16.03.2020 03:23
Mathematics, 16.03.2020 03:24
Mathematics, 16.03.2020 03:24
Mathematics, 16.03.2020 03:24
Spanish, 16.03.2020 03:24
Mathematics, 16.03.2020 03:24
Mathematics, 16.03.2020 03:25
Health, 16.03.2020 03:25
English, 16.03.2020 03:25
Mathematics, 16.03.2020 03:25
Mathematics, 16.03.2020 03:25
Mathematics, 16.03.2020 03:25
Mathematics, 16.03.2020 03:25