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
Wewaii [24]
3 years ago
5

In triangle ABC and triangle XYZ , if angle A and angle B are acute angles such that cos A = cos X then show that angle A = angl

e X
Mathematics
1 answer:
just olya [345]3 years ago
3 0
6x3=18-3=15 Hope it helps.
You might be interested in
Help please <br><br> 0.3 [. ] 0.4 <br> What is the decimal <br> &lt;,&gt; or =
worty [1.4K]
The answer to that is
4 0
4 years ago
Kayla buys a shirt for 8.19. she pays with a $10 bill. how much change should she receive? tell meh plz :D
krek1111 [17]
10-8.19=1.81
just use subtraction
5 0
4 years ago
Read 2 more answers
Find the measure of one interior angle for the following regular polygon
shusha [124]

Answer:

Step-by-step explanation:

I am assuming that by "interior" angle you do not mean the central angle.

This is a 10-sided polygon, a decagon. That means that there are 10 triangles that can extend from the center, with their sides being equal to the radii of the decagon. If we extract one of these triangles we can find what the interior angle is. The vertex angle measures 360/10 which is 36.

Split this triangle in half from the vertex to the base, creating a right triangle. The vertex angle is also split in half, making this angle (the vertex angle is the one at the top of the triangle) 18 degrees. We already know that one angle inside this right triangle is 90 (definition of a right triangle) and to find the other one, we apply the Triangle Angle-Sum Theorem:

180 - 18 - 90 = 72 degrees. That is the measure of the base angle that is NOT the right angle, obviously.

4 0
3 years ago
Write an equation for the following:
inysia [295]

Answer: 3(x+4)=x+18

Step-by-step explanation: Break down the problem. It says three times the sum of a number and 4. You have to add the number and 4 first. Since you're multiplying by 3, put the sum of a number and 4 in parentheses. This equals the same as eighteen more than the number. It set up how it sounds. Add 18 to the number.

7 0
3 years ago
In a parenting magazine, Mrs. Smith read an advertisement about all the different ways that bleach can be used to kill bacteria.
babymother [125]

Question:

(a) How many bacteria would be found in 24 hours

(b) How many bacteria would be found in 2 days

(c) How long for 1000 bacteria to be found

Answer:

(a) 282429536481 bacteria

(b) 7.97*10^{22 bacteria

(c) 6 days

Step-by-step explanation:

The question illustrates an exponential function

y = ab^x

Where

a = Initial\ Value = 1

b=Rate = 3 --- i.e. triples

x = number\ of\ hours

Solving (a): Bacteria in 24 hours

In this case:

x = 24

Substitute x = 24, b = 3 and a = 1

So:

y = ab^x

y = 1 * 3^{24

y = 1 * 282429536481

y = 282429536481 bacteria

Solving (b): Bacteria in 2 days

2\ days =48\ hours

So:

x = 48

Substitute x = 48, b = 3 and a = 1

So:

y = ab^x

y = 1 * 3^{48

y =7.97*10^{22 bacteria

Solving (c): How long for 1000 bacteria

In this case:

y = 1000

Substitute y = 1000, b = 3 and a = 1

So:

y = ab^x

1000 = 1 *3^x

1000 = 3^x

Take Log of both sides

Log1000 = Log3^x

This gives:

Log1000 = xLog3

Make x the subject

x = \frac{Log1000}{Log3}

x \approx 6

<em>Hence: It takes 6 days</em>

8 0
3 years ago
Other questions:
  • Evaluate the expression.
    15·2 answers
  • What number cannot be used as the denominator of a fraction? Explain why.
    11·2 answers
  • Haley constructed this 10-sided polygon using triangles,
    12·1 answer
  • Find three solutions of the equation y = 9x - 4
    6·2 answers
  • Two sides of a rectangle iPhones are five and 5/8 feet long other two sides of 6 1/4 feet long what is the perimeter
    13·1 answer
  • How do I write 32.39 in expanded notation?
    7·1 answer
  • M∠A = 142º<br> I need it
    8·1 answer
  • Write an equation of the given line that passes through the given point and has the given slope m
    15·2 answers
  • Due to the distribution of the new iPhone, smartphone sales at Cinq's Electronic store has increased by
    14·1 answer
  • What is the balance after 15 years in a savings account that earns 2% interest compounded bimonthly when the initial deposit is
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!