All categories

3 years ago

4.7j-6.8k when j =5 and k =3

Mathematics

1 answer:

Oksanka [162]3 years ago

5 0

Answer:

Your answer is 3.1

Step-by-step explanation:

Wherever you see j, substitute 5. Wherever you see k, substitute 3

1. Set up: $4.7(5)-6.8(3)$

2. Multiply 4.7 * 5, to get 23.5

3. Multiply 6.8 * 3 to get 20.4

4. Subtract 23.5-20.4

5. Final anwer - 3.1

Hope this helps!

You might be interested in

A chef buys 9 cucumbers, 18 peppers, and 21 tomatoes. How much did he spend?6 for 2 dollars for cucumbers 12 for 9 dollars for p

geniusboy [140]

6 Cucumbers = $2
$2/6 = $0.33 per cucumber
12 peppers= $9
$9/12= $0.75 per pepper
6 tomatoes= $4
$4/6= $0.66 per tomatoes
9 cucumbers= $2.97
18 peppers= $13.5
21 tomatoes=$13.86
Total= (2.97+13.5+13.86)----> $30.33

3 0

3 years ago

a quadratic equation has a discriminant of 12. which could be the equation? a.0 = –x2 8x 2 b.0 = 2x2 6x 3 c.0 = –x2 4x 1 d.0 = 4

Norma-Jean [14]

Answer:

Option b which is $2x^2+6x+3=0$

Step-by-step explanation:

We have been given the discriminant 12

We have to choose the equation which will satisfy the given discriminant.

We will consider all the given equation one by one

First we will take option a which is $-x^2+8x+2=0$

Discriminant from the equation we will find by the formula

$D=b^2-4ac$

Here, a=-1,b=8 and c=2 on substituting the values we will get

$D=8^2-4(-1)(2)=72$

Hence, option a is incorrect.

Now, we will consider option b which is $2x^2+6x+3=0$

Here, a=2,b=6 and c=3 on substituting the values we get

$D=(6)^2-4(2)(3)=12$

Hence, option b is correct

Therefore, option b is the required answer.

8 0

2 years ago

Read 2 more answers

21. Andre grew a plant for a science experiment. At the end of his

kotegsom [21]

Answer:

he answer is 140 minutes to plant 14 saplings.

Step-by-step explanation:

30 divided by 3=10

so it takes 10 minutes to plant one sapling.

10x14=140 so this is how you get your answer. im 99% sure

4 0

3 years ago

Read 2 more answers

Help me plzzz kinda confused on this sqaure stuff

balandron [24]

Answer:

The square JKLM is a square with 4 right angles

It is a parallelogram

Step-by-step explanation:

3 0

3 years ago

What is the best way to prep for math during the summer?

Phoenix [80]

Answer:

https://www.khanacademy.org

Step-by-step explanation:

Khan Academy is free and you can choose by grade level or course. It's a personalized learning experience with videos and practice exercises that includes progress tracking.

6 0

3 years ago