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
sleet_krkn [62]
3 years ago
12

Please help this is for my test

Mathematics
1 answer:
Volgvan3 years ago
3 0

Answer:

Step-by-step explanation:

for qn 14 use the SOH CAH TOA method

use cos for this so. cos 47 degree= x/13

solve for x.

You might be interested in
Which expression is equivalent To 2(3* - 8)
prohojiy [21]
Simplify the expression —48

Hope it helps :)
3 0
3 years ago
Pls solve this!!!!! Points!!!!!!!
Alex_Xolod [135]

Answer:

1

Step-by-step explanation:

Given that both equations are equal, solve the distributive property and then just solve for X:

2x + 2(3x-1) = 3(x+1)
2x + 6x - 2 = 3x + 3
5x = 5
x = 1

Therefore, the value of X is 1.

To know the perimeter of the triangle, we apply the value of X to solve the equation.
3(x + 1)
3(1 + 1)
3 + 3 = 6.

Therefore, each figure's perimeter is 6, as both are equal.

3 0
3 years ago
An element with a mass of 550 grams decays by 18.8% per minute. To the nearest minute, how long will it be until there are 60 gr
dmitriy555 [2]

Answer:  11

Step-by-step explanation:

Exponential Functions:

y=ab^x

y=ab  

x

 

a=\text{starting value = }550

a=starting value = 550

r=\text{rate = }18.8\% = 0.188

r=rate = 18.8%=0.188

\text{Exponential Decay:}

Exponential Decay:

b=1-r=1-0.188=0.812

b=1−r=1−0.188=0.812

\text{Write Exponential Function:}

Write Exponential Function:

y=550(0.812)^x

y=550(0.812)  

x

 

Put it all together

\text{Plug in y-value:}

Plug in y-value:

60=550(0.812)^x

60=550(0.812)  

x

 

\frac{60}{550}=\frac{550(0.812)^x}{550}

550

60

​  

=  

550

550(0.812)  

x

 

​  

 

Divide both sides by 550

0.109091=0.812^x

0.109091=0.812  

x

 

\log 0.109091=\log 0.812^x

log0.109091=log0.812  

x

 

Take the log of both sides

\log 0.109091=x\log 0.812

log0.109091=xlog0.812

use power rule to bring x to the front

\frac{\log 0.109091}{\log 0.812}=\frac{x\log 0.812}{\log 0.812}

log0.812

log0.109091

​  

=  

log0.812

xlog0.812

​  

 

Divide both sides by log(0.812)

10.638757=x

10.638757=x

x\approx 11

x≈11

5 0
4 years ago
(2+3)*38-84+48937 divided by 2
lutik1710 [3]
The answer is 491449/2
6 0
3 years ago
Read 2 more answers
Two nore than a number
WITCHER [35]
Two or more than a number is 2>_x or x<_2.
3 0
3 years ago
Other questions:
  • What two numbers multiply together and equal 48 and add together and equal -16
    12·2 answers
  • Does the system of equayions below have a solution 6x-2y=5 and <br> 4x -3y=5
    11·1 answer
  • Answer the first one please. The first one to answer it I will give you the brainliest
    11·1 answer
  • 41 out of 50 women surveyed liked perfume. what percentage of women did NOT like perfume​
    11·2 answers
  • An equation has solutions of m = -5 and m = 9. Which could be the equation?
    5·1 answer
  • Why is 1/6 greater than 1/8 but less than 1/3
    13·2 answers
  • The expression equivalent to sin 3x−sin x is what
    8·2 answers
  • What is the slope of the line through the points (1,5) and (-2,-4)?
    5·1 answer
  • 6. Find the function with x-intercepts (-3,0) and (5,0), which also goes through the point (1,8)
    9·1 answer
  • What is the equation of radius: 2, center:(4,-3)
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!