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8090 [49]
3 years ago
15

Evaluate 7j+5−8k j=0.5 k=0.25,

Mathematics
2 answers:
kramer3 years ago
8 0

Answer:

Evaluate 7j+5-8k when j=0.5 and k=0.25 Get the answers you need, now!

2 answers

Step-by-step explanation:

Sindrei [870]3 years ago
8 0

Answer:

6.5

Step-by-step explanation:

(7*0.5)+(5)-(8*0.25)

PEMDAS

Multiply 7 and 0.5= 3.5

Multiply 8 and 0.25= 2

3.5+5-2

Add 3.5 and 5= 8.5

Subtract 8.5 and 2= 6.5

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I have 14 tens, 6 hundred, 7 tens /thousands, and 15 ones
Yuki888 [10]

Answer:

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2 years ago
What number is 7 units to the left of -1?<br><br> a.6<br> b.-6<br> c.-8<br> d.8
drek231 [11]

1 unit to the left of -1 on the number line is -2.

Thus, 7 units to the left of -1 is -8.

The appropriate choice is ...

... c. -8

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3 years ago
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Answer:

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3 years ago
In Mrs.Hu's classroom, 4/5 of the students have a dog as a pet. Of the students who have a dog as a pet also have cat as a pet.
Travka [436]

Answer:

This problem is incomplete, we do not know the fraction of the students that have a dog and also have a cat. Suppose we write the problem as:

"In Mrs.Hu's classroom, 4/5 of the students have a dog as a pet. X of the students who have a dog as a pet also have cat as a pet. If there are 45 students in her class, how many have both a dog and a cat as pets?"

Where X must be a positive number smaller than one, now we can solve it:

we know that in the class we have 45 students, and 4/5 of those students have dogs, so the number of students that have a dog as a pet is:

N = 45*(4/5) = 36

And we know that X of those 36 students also have a cat, so the number of students that have a dog and a cat is:

M = 36*X

now, we do not have, suppose that the value of X is 1/2 ("1/2 of the students who have a dog also have a cat")

M = 36*(1/2) = 18

So you can replace the value of X in the equation and find the number of students that have a dog and a cat as pets.

5 0
3 years ago
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What expression is equal to6 e + 3 (e-1)
eimsori [14]

Answer:

9e -3

Step-by-step explanation:

Perform the indicated multiplication:

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This, in turn, simplifies to

9e -3, or 3(3e - 1).

6 0
3 years ago
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