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ohaa [14]
4 years ago
11

Evaluate the following expression when a = -3, b = 2, c = 5, and d= -4. 4c + d

Mathematics
2 answers:
Delicious77 [7]4 years ago
8 0

Answer:

-24

Step-by-step explanation:

this is how I think it should be done

Solution:

4c+d

4×5(c)-4(d)

20+-4

=-24

Elan Coil [88]4 years ago
4 0

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

The first step you need to do is plug in the numbers...

4(5)+(-4)

Then you will distribute the positive 1 but that won't change much...

4(5)-4

Then you'll have to multiply the 4 and 5 to get....

20 -4

Now from here should be a piece cake, so the answer is...

16\\

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Darian has $6000 to invest to save for college. He has two choices laid out in the table below. Will compound interest or simple
tatyana61 [14]

Answer:

C)There is not enough information to make a decision.

Step-by-step explanation:

simple interest

I= PRT

I = 6000* .07 * 6 = 2520


compound interest

I = P(1 + r/n) ^ nt

I = 6000(1 +

wait a minute

we don't know the compounding term

is it quarterly, annually, monthly??????


5 0
3 years ago
the time required to assemble computers varies directly as the number of computers assembled and inversely as the number of work
olga2289 [7]

Answer:

16 hours

Step-by-step explanation:

let t be time, n the number of computers and w the number of workers, then

t = \frac{kn}{w} ← k is the constant of variation

To find k use the condition n = 30, w = 6 and t = 10 , then

10 = \frac{30k}{6} ( multiply both sides by 6 )

60 = 30k ( divide both sides by 30 )

2 = k

t = \frac{2n}{w} ← equation of variation

When w = 5 and n = 40 , then

t = \frac{2(40)}{5} = \frac{80}{5} = 16 hours

3 0
3 years ago
To earn a fitness award, your average heart rate while walking must be between 80 and 89 beats per minute, inclusive. Suppose yo
Morgarella [4.7K]
Based on the first three (3) recordings, your average heart rate in beats per minute is approximately 84 bpm (mean). Calculating for the standard deviation of the samples, we get about 2.5 bpm. To give the possible heart rates on the fourth, we may solve for the range:

Upper Range = Mean + Standard Deviation = 84 + 2.5 = 86.5 bpm or 87 bpm
Lower Range = Mean - Standard Deviation = 84 - 2.5 = 81.5 bpm or 82 bpm

Therefore the fourth and final recording will likely to fall in the range of 82 - 87 beats per minute. You will win the fitness award!

<em>ANSWER: 82-87 beats per minute</em>

3 0
4 years ago
Sandi works for Elizabeth Arden Cosmetics and earns $500 per week salary plus 4% commission on sales over $2,000. If Sandi sold
podryga [215]
To find the amount of money she earned out of the 2733...
You need 4% of 2000 which is...
its 80 which means for every $2000 she sells she earns $80.
She sold just over 2 amounts of 2000 therefore, 
her salary is $609.32
3 0
3 years ago
What is the solution to this equation?
user100 [1]
Answer:
d. 21

Explanation:
Step 1 - Subtract 13 from both sides
x + 13 = 34
x + 13 - 13 = 34 - 13
x = 21
3 0
3 years ago
Read 2 more answers
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