1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
maria [59]
3 years ago
12

ASAP PLS! What is 2k^2+3k-13=k^2+15?

Mathematics
1 answer:
shepuryov [24]3 years ago
8 0

2k^2+3k-13=k^2+15

subtract k^2 -15 from each side

k^2 +3k -28=0

(k+7)(k-4)=0

k=-7  k=4

Answer: k= -7,4

You might be interested in
Which is the solution to –7x > 49?
mote1985 [20]

Answer:

x<7

Step-by-step explanation:

Divide by -7 on both sides and when dividing by a negative you should flip the inequality sign.

6 0
3 years ago
What is 3/8<br> as an equivalent fraction with the LCM as the denominator?
tino4ka555 [31]

Answer:

3/8 = 9/24

Step-by-step explanation:

So here we have a basic multiplication problem and finding the LCM of 8 and 3. The first step in this problem is finding the LCM of 3/8. The LCM of 3 and 8 is 24. So yay! we have the bottom half of our answer!

Ex.-

The LCM of 8 and 3 is 24.

So now we have to find an equivalent fraction. Since we already know that 8 (the denominator in the original equation) can be multiplied by 3 to equal 24, we use 3 (the numerator in the original equation) and multiply it by itself to get an equivalent fraction.

Ex.-

8 x 3 = 24

3 x 3 = 9

Now that we have our numerator and denominator, all we have to do now is put them together to get our answer.

Ex.-

9/24 (answer) = 3/8 (original equation)

Hopefully I could help! :)

4 0
3 years ago
15. Explain why we need to specify 0 &lt; b &lt; 1 and b &gt; 1 as valid values for the base b in the expression logb(xx).
damaskus [11]

Answer:

The base (b) has to be positive and different of 1. The logarithm is the inverse of exponential, so:

logb(a) = x ⇒ a = bˣ

So, for b = 0 ⇒ 0ˣ = a

And there is impossible, "a" only could be 0.

For b = 1 ⇒ 1ˣ = a

And the same thing would happen, the logarithming would be to be 1, and the function will be extremally restricted.

For b<0, then the expression a = bˣ will be also restricted, and will not represent all values of a.

So, 0<b<1 and b >1.

3 0
3 years ago
(6+23) x (32-25) + 72<br> I just need to see what the answer is to check my work
Vlad1618 [11]

Answer:

275

Step-by-step explanation:

6+23=29 and 32-25=7

29 x 7 = 203

203 + 72 = 275

The final answer is 275.

Hope this helps!

7 0
3 years ago
What is 10% of $34.50​
ladessa [460]

Answer:

3.45

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Describe fully the single transformation that maps triangle a onto triangle b
    15·1 answer
  • Consider the diagram shown where a ladder is leaning against the side of a building. the base of the ladder is 12ft from the bui
    8·2 answers
  • Brailliest+46 pts
    9·1 answer
  • 49^-1/2 • 64^2/3<br>Express answer in simplest form (show work plz)​
    8·1 answer
  • 4.<br> Find the geometric mean of 4 and 12.<br><br><br> 24<br><br><br><br><br><br><br><br><br> 8
    15·1 answer
  • Which of these expressions have positive values and which have negative values? Drag and drop each expression
    6·1 answer
  • Guys please help meeee!
    5·1 answer
  • (brainliest) please help! :D
    7·1 answer
  • Which property explains why these two expressions are equal? 7 + q + 4 = 4 + 7 + q
    9·1 answer
  • Look at the pattern below.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!