All categories

3 years ago

What is the value of the expression below when y = 8 and z = 9? 5y – 2z

Mathematics

1 answer:

Natalka [10]3 years ago

3 0

Answer:

$\boxed {\tt 22}$

Step-by-step explanation:

We are given the expression:

$5y-2z$

We want to find the value of the expression when y=8 and z=9. Therefore, we must substitute 8 in for y and 9 in for z.

$5(8)-2(9)$

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.

Multiply 5 and 8.

$40-2(9)$

Multiply 2 and 9.

$40-18$

Subtract 18 from 40.

$22$

The value of the expression 5y-2z at y=8 and z=9 is 22.

You might be interested in

Which of the following are solutions to the equation below?

lana66690 [7]

Answer:

F. - 4

Hope it help

8 0

3 years ago

Start time 2 p.m. elapsed time blank and time 8:30 p.m.

Nataly_w [17]

Answer:

Well I guess this is a math problem but the middle time would be: 6 hours and 30 minutes.

Step-by-step explanation:

Adding 6 hours to 2 pm makes 8:00 on the dot at night. Adding 30 minutes to 8:00 would be 8:30. There you have your answer.

3 0

2 years ago

Find the volume of the cylinder

yulyashka [42]

Answer:

$14130 {ft}^{3}$

4 0

2 years ago

A cylinder has a base diameter of 14m and a height of 15m. What is its volume in

BabaBlast [244]

Answer:

2310m^3

Step-by-step explanation:

base area which is the circle = πr^2

But diameter, d = 14, r = 14/2 = 7

area = π × (7)^2 = 22/7 × 49 = 22 × 7 = 154

Volume = base area × height

= 154 × 15 = 2310

3 0

3 years ago

YOU BE THE TEACHER Your friend finds the sum.

il63 [147K]

Answer: My friend is correct.

Step-by-step explanation:

<em>Adding a negative is the same as subtracting a positive.</em>

$9 + (-6) = 3$

$9 - 6 = 3$

$3 = 3$

Hope this helps! Have a great day!

5 0

2 years ago

Read 2 more answers