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
spin [16.1K]
3 years ago
5

Algebra 2 help!

Mathematics
1 answer:
murzikaleks [220]3 years ago
4 0
<h3>Answer:</h3>
  • x-intercept: 82.75
  • y-intercept: -2.15
<h3>Step-by-step explanation:</h3>

To find the x-intercept, set y=0 and solve.

... 0 = log(12x +7) -3

... 3 = log(12x +7) . . . . add 3

... 1000 = 12x +7 . . . . take the antilog. (10^3 = 1000)

... 993 = 12x . . . . . . . .subtract 7

... 82.75 = x . . . . . . . . divide by 12

To find the y-intercept, set x=0 and solve.

... y = log(12·0 +7) -3

... y = log(7) -3 . . . . . . simplify

... y ≈ 0.85 -3 = -2.15 . . . . use a calculator for the log function

You might be interested in
How to simplify 4 to 1 ratio
Katen [24]

Answer:

Note that the ratio 12 to 3 is said to be equivalent to the ratio 4 to 1, that is 12:3 = 4:1.

6 0
3 years ago
Read 2 more answers
Please help! Correct answer only, please! I need to finish this assignment this week. Determine the value of the following: A. B
11Alexandr11 [23.1K]

Answer:

C

Step-by-step explanation:

Given

\left[\begin{array}{ccc}-2&3\\2&4\\\end{array}\right] + \left[\begin{array}{ccc}3&1\\-1&2\\\end{array}\right]

Add corresponding elements to obtain the sum, that is

= \left[\begin{array}{ccc}-2+3&3+1\\2-1&4+2\\\end{array}\right]

= \left[\begin{array}{ccc}1&4\\1&6\\\end{array}\right] → C

4 0
3 years ago
Prove the identity.
Delvig [45]

Answer:

D. Pythagorean

Step-by-step explanation:

Given the identity

cos²x - sin²x = 2 cos²x - 1.

To show that the identity is true, we need to show that the left hand side is equal to right hand side or vice versa.

Starting from the left hand side

cos²x - sin²x ... 1

According to Pythagoras theorem, we know that x²+y² = r² in a right angled triangle. Coverting this to polar form, we have:

x = rcostheta

y = rsintheta

Substituting into the Pythagoras firnuka we have

(rcostheta)²+(rsintheta)² = r²

r²cos²theta+r²sin²theta = r²

r²(cos²theta+sin²theta) = r²

(cos²theta+sin²theta) = 1

sin²theta = 1 - cos²theta

sin²x = 1-cos²x ... 2

Substituting equation 2 into 1 we have;

= cos²x-(1-cos²x)

= cos²x-1+cos²x

= 2cos²x-1 (RHS)

This shows that cos²x -sin²x = 2cos²x-1 with the aid of PYTHAGORAS THEOREM

5 0
3 years ago
Help me out mathematics
grandymaker [24]

Answer:

a its a

Step-by-step explanation:

6 0
2 years ago
What is thirty-two times by itself?
SpyIntel [72]

32×32 gives 1024.

Hope it helps!

5 0
2 years ago
Other questions:
  • X^5/x^-3 Multiply or divide.
    8·1 answer
  • How do both shaded models show that 30 hundredths is the same as 3 tenths?
    7·1 answer
  • Help me please ??!!!!
    11·2 answers
  • Select the correct answer.
    7·1 answer
  • 2, 1, 3, 2, 1, 4, 1, 5, 2, 1, 3, 1 The data have been organized into a dot plot, as shown below: A dot plot with integers 1 to 5
    7·1 answer
  • The total area of the polygon is 176 square feet. Find the value of x.
    7·2 answers
  • Simplify 16x^8y^5= 4x^5y
    6·1 answer
  • Nathan is opening a savings account that has 10% streaks simple interest rate. He deposits $75 in the account. After 5 years, he
    8·1 answer
  • Which equation best represents the relationship between x and y in the graph? please guys I need help.
    7·1 answer
  • 8x+2y/z, where x=1/2, y = 4, and z = 2<br> I need this quick please! 40 points!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!