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
Elza [17]
2 years ago
13

I don’t quite understand this problem could someone help me please

Mathematics
1 answer:
ale4655 [162]2 years ago
3 0

Answer:

\frac{7\sqrt{65}}{65}

Step-by-step explanation:

Cosine is the ratio of the side adjacent to the angle and the right triangle hypotenuse.

cos B = \frac{7}{\sqrt{65}} = \frac{7\sqrt{65}}{65}

You might be interested in
Is sin A is 7/10 what is Cos A
viva [34]

Answer:

Cos A = (√51)/ 10

Step-by-step explanation:

sin  is opposite/hypothenuse

cos is adjacent/hypothenuse

Pythagorus theorem says that c² = a² + b²

10² = 7² + b²

b² = 100 - 49

b = ±√51

It doesn't make sense for a length to be a minus number therefore, we will use +√51.

Cos A = (√51)/ 10

Tell me if I am wrong.

Can I get brainliest

5 0
3 years ago
Determine what type of model bet fits the given situation: Every day, half a bacteria population dies. A. Linear B.quadratic C.
makvit [3.9K]

Answer:

Exponential

Step-by-step explanation:

<em>Starter:</em>

According to the title:

"Every day, half a bacteria population dies."

Exponential: y = ab^x ( b > 0 , b ≠ 1)

So the answer is C.

<em>Calculations:</em>

An exponential model is of the form y = a • b^t.

If you start with population of 500 million bacteria

t = 0

so 500 million = a • b^0 = a

Since every day half the population dies then in 1 day population will be 250 million

so a = 500 million, y = 250 million and t = 1

250 million = 500 million • b^1

b = 0.5

Therefore your equation would be

y = 500 million (or whatever the pop) • 0.5^t

Where t = number of days

This could also be written in exponential form ( e = 2.73)

4 0
2 years ago
Without dividing or listing multiples how can you tell if 61 is a multiple of 6.
Ostrovityanka [42]
For a number to be a multiple of 6, it must be divisible by 6
and a number divisble by 6 means that it is divisble by 2 and 3

since the ones digit is odd it is not divisble by 2 which means 61 is not a multiple of 6
7 0
3 years ago
What is the value of the expression below?
lukranit [14]

Answer:

D. 30

Step-by-step explanation:

-5(-8)(3)(-1) /(-4)

Lets simplify the numerator first

-5*-8 = 40

40 *3 = 120

120*-1 = -120

Replace -5(-8)(3)(-1)  with -120

-120/-4

A negative divided by a negative is a positive

30

8 0
3 years ago
A woman bought some large frames for $10 each and some small frames for five dollars each add a closeout sale if she bought 17 f
emmasim [6.3K]
She bought 3 large frames and 14 small frames
3 0
3 years ago
Other questions:
  • the graph of f(x) can be compressed vertically and shifted to the left to produce the graph of g(x). if f(x)=x^3 which of the fo
    12·1 answer
  • 20 points and brainliest plz help
    8·1 answer
  • I need help asap thanks
    6·1 answer
  • If equation for the straight line passing through the point (-2; 3 ) and (- 3; 2)
    6·1 answer
  • Hi, I am iluvbooks. Y'all Americans? <br><br>anyway, this is free pōints hehe.​
    15·2 answers
  • Why does (-5) (-5) (-5) have a negative product?
    6·1 answer
  • Which set of ordered pairs represents y as a function of x? <br><br>​
    10·1 answer
  • Simplify using the division rule<br> 14,252<br> Trs
    13·1 answer
  • PLEASE HELP!!!<br> ANSWER ALL 4
    10·2 answers
  • What is the formula for the area of a triangle?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!