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
stepan [7]
3 years ago
9

If b is the measure of an acute angle and cos b = 0.75, then:

Mathematics
1 answer:
Marina CMI [18]3 years ago
3 0

Answer:

option (2)

Step-by-step explanation:

Using the cofunction identity

cosx = sin(90 - x) , then

cosb = sin(90 - b) = 0.75

You might be interested in
Identify the data set that could be quadratic. HELP ASAP!!
Ne4ueva [31]

Answer:

Option B can be quadratic.

Step-by-step explanation:

Take a look at the data.

A quadratic equation is of the form ,

y = ax^{2} +bx + c,

where, a,b,c are constants.

<em>To find an unknown equation of 3 variables,</em>

<em>we need 3 points lying on the equation.</em>

here they have given, 5 points, meaning all should lie on the curve.

<em>For first option,</em> inserting first 3 points to find equation, we get equation as,

y = x^{2} -4x +11, but the rest points don't satisfy the curve.

So first option is not quadratic.

Similarly, it can be shown that option C and D are also not quadratic.

While, in option B, it is clear that for every y, x is y squared,

x = y^{2}, thus quadratic in nature.

6 0
3 years ago
3,480
Serjik [45]

Answer

B

explanation

3480ones = 3480x1=3480

8 0
2 years ago
2^x-1=128<br><br><br> show work pls! thank u :)
hichkok12 [17]

Hello from MrBillDoesMath!

Answer:

Take you pick below!   (either x 8 or x = 7.01, approx, depending how the question is interpreted)




Discussion:

Interpretation 1

If the question is   2^(x -1)  = 128, then as 2^7 = 128,

x-1 = 7 so x = 8



Interpretation 2

If the question is (2^x -1) = 128, then..

2^x  = 128 + 1 = 129  =>

log(2^x) = log(129) =>

xlog(2) = log(129) =>

x = log (129) / log2 = 7.01

Regards,  

MrB

4 0
3 years ago
What is 8 1/2 / 11 as a mixed number or fraction
Anettt [7]

Answer: 17/22

Step-by-step explanation:

6 0
1 year ago
Read 2 more answers
George wants to purchase a gift for his father for Father’s Day that cost 67.25 if he has already saved 7/8 of the amount how mu
Arlecino [84]

Answer:

$58.84375, rounded ≈ $58.84

Step-by-step explanation:

You can do 67.25 x 7/8 (use a calc if you are lazy) = 58.84375

I'm guessing you don't need to round so I'm going to add both real and rounded answers

3 0
2 years ago
Other questions:
  • I need you to walk me through how you got the answer to 298÷4
    10·2 answers
  • If the radius of a sphere is increased by 5 cm so that the area of the sphere obtained is increased by 400pi square cm. What was
    6·1 answer
  • Is the number of free dash throw attempts before the first shot is missed number of free-throw attempts before the first shot is
    10·1 answer
  • Help me pls in question 7!!!
    7·1 answer
  • Find the equation of a line that has the same slope as y=9-9x and the same y-intercept as y=-10x-9
    10·2 answers
  • Trying to figure out 5n + 6 + (7n)<br><br> I have it written out but Im affraid it's wrong
    9·1 answer
  • Help with this question please? Step by step?
    10·1 answer
  • Find all real solutions x to 4^x - 2^x = 56.
    15·2 answers
  • A rectangle has a perimeter of 48 yards and a height of 17 yeards. What is the length of the base?
    7·1 answer
  • 1. Match the polynomial with its end behavior.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!