Solve the equation for x 1/3(x-15) =95 A. X= 105 B. X= 215 C. X= 300 D. X= 310

Hi pls help me thanksss pls provide me with workings thankss :)

Vinil7 [7]

Step-by-step explanation:

(i)

Using cos(a - b) = cos a cos b + sin a sin b

$\frac{4}{5}$ = cos a cos b + $\frac{1}{5}$

cos a cos b = $\frac{4}{5} -\frac{1}{5} = \frac{3}{5}$

(ii)

Using cos(a + b) = cos a cos b - sin a sin b

cos(a + b) = $\frac{3}{5}-\frac{1}{5}=\frac{2}{5}$

(iii)

Using cot a = $\frac{cos a}{sin a}$

$=(\frac{cos A}{sin A} )(\frac{cos B}{sin B} )$

$=\frac{cos A cos B}{sin A sin B}$

$=\frac{\frac{3}{5} }{\frac{1}{5} }$ $=\frac{3}{5}$ × $5$

= 3

please give me a brainliest answer

8 0

2 years ago

Micaela is 2 years older than Sam. In 4 years, the sum of their ages will be 40. How old is Micaela now?

Ann [662]

Answer:

The error is: The solution shows the Sam's age and the problem asked for Micaela's age.

Solution fixed: $m=17$

Micaela is 17 years old now.

Step-by-step explanation:

The error is: The solution shows the Sam's age and the problem asked for Micaela's age.

To fix the error, you can set up these equations based on the information given:

$m=s+2$

$(m+4)+(s+4)=40$

Solve for "s" from the first equation:

$s=m-2$

Substitute this equation into the second equation:

$(m+4)+((m-2)+4)=40$

Now you need to solve for "m":

$m+4+(m-2+4)=40\\m+4+m+2=40\\m+m=40-4-2\\2m=34\\m=\frac{34}{2}\\\\m=17$

Micaela is 17 years old now.

4 0

2 years ago

Read 2 more answers

Item 6 sq−→sq→ bisects ∠rst∠rst, sp−→sp→ bisects ∠rsq∠rsq, and sv−→sv→ bisects ∠rsp∠rsp. the measure of ∠vsp∠vsp is 17°17°. find

Stolb23 [73]

Angle TSQ measures 68 degrees. When a ray bisects an angle, it divides it into two equal parts. Each part is one-half the measurement of the original angle. Several rays are described as bisecting different angles. I would sketch a diagram to keep track of all the different rays and angles.

A. Since angle RST is bisected by ray SQ, angle RSQ and angle QST are each half the size of angle RST.

B. Since angle RSQ is bisected by ray SP, angle RSP and angle PSQ are each half the size of angle RSQ.

C. Since angle RSP is bisected by ray SV, angle RSV and angle VSP are each half the size of angle RSP. We are given the measurement of angle VSP as 17 degrees. To find the measure of angle RSP, we notice in statement C above that VSP is half the size of angle RSP. If we double angle VSP's measurement (multiply by 2), we get angle RSP measures 34 degrees. Using similar logic and statement B above, we double RSP's measurement of 34 to get angle RSQ's measurement. Double 34 is 68, angle RSQ's measurement in degrees. From statement A above, we notice that RSQ's measurement is equal to that of angle QST's. Therefore, angle QST also measures 68 degrees. However, the question asks us to find the measurement of angle TSQ. However, angle QST and angle TSQ are the same. Either description can be used. Therefore, the measurement of angle TSQ is 68 degrees.

3 0

3 years ago

Jared has taken out a loan for his car. His monthly payments amount to $650. If his loan is for 36 months, and he paid a down pa

miss Akunina [59]

B! 650 x 36 +400 = 23,800!

5 0

2 years ago

Read 2 more answers

LAST ONE THANKSSSS

pishuonlain [190]

Answer: A

Step-by-step explanation: with my calculation, and the information you have give i have to say it is A.