3 years ago

Evaluate the expression when a= 2. a? +27

Mathematics

1 answer:

Troyanec [42]3 years ago

7 0

Since a equals 2, 2 plus 27 is equal to 29. So your answer is 29. Hope that helped:)

You might be interested in

Dave is on a kayaking trip. On the first day, he travels 15 miles. On the second day, he travels 35 miles and the third day he r

zubka84 [21]

Answer:

30 miles

Step-by-step explanation:

average= sum of miles ÷ days to cover = 30

HOPE IT HELPS

5 0

2 years ago

Xsquared+11x+28+xsquared+13x+40

UNO [17]

X² + 11x + 28 + x² + 13x + 40

combine like terms

x² + x² = 2x²
11x + 13x = 24x
28 + 40 = 68

2x² + 24x + 68 is your answer

if you want it simplified:

2(x² + 12x + 34)

hope this helps

5 0

3 years ago

A hospital uses cobalt-60 in its radiotherapy treatments for cancer patients. Cobalt-60 has a half-life of 7

NeTakaya

Answer:

We have 197 g of Co-60 after 18 months.

Step-by-step explanation:

We can use the decay equation.

$M_{f}=M_{i}e^{-\lambda t}$

Where:

M(f) and M(i) are the final and initial mass respectively
λ is the decay constant (ln(2)/t(1/2))
t(1/2) is the half-life of Co
t is the time at the final amount of m

$M_{f}=228e^{-\frac{ln(2)}{7} 1.5}$

$M_{f}=197\: g$

<u>Therefore, we have 197 g of Co-60 after 18 months.</u>

I hope it helps you!

4 0

3 years ago

What is 34107.12 to the nearest half centimeters?

STatiana [176]

Answer:

34107cm

Step-by-step explanation:

4 0

2 years ago

Which triangle is similar to the triangle T

Delicious77 [7]

Answer:

the last one

maybe?

Step-by-step explanation:

3 0

2 years ago