Use the substitution method to solve the following system of equations 3x+5y=3 and x+2y=0

If StartFraction pi Over 2 EndFraction less than t less than pi , which of the following is true?

oksian1 [2.3K]

Answer:

b. cosine t less than 0 and cotangent t greater than 0

Step-by-step explanation:

We have the following relation

$\frac{\pi }{2} < t$

if we apply the cosine function in the relation we get:

$cos\frac{\pi }{2}$

$-1$

the cosine of t is between 0 and -1 then (cosine t less than 0)

If we now apply cotangent function in the relation:

$cotan\frac{\pi }{2}$

$0$

This means that cotang is greater than 0, therefore the correct answer is b. cosine t less than 0 and cotangent t greater than 0

5 0

3 years ago

Lauren save $84 more than Fiona. 1 fifth Of Lauren's saving was the same as 3 eights of fiona's Saving. How much did Lauren and

muminat

Answer:

Lauren's saving=$180

Fiona's saving=$96

Step-by-step explanation:

Let the saving's of fiona be x

Now given that the savings of lauren is $84 more than fiona which means the saving's of lauren is x+84

Given 1 fifth Of Lauren's saving was the same as 3 eights of fiona's Saving

$\frac{1}{5}(lauren's saving)=\frac{3}{8}(fiona's saving)$

$\frac{1}{5}(x+84)=\frac{3}{8}(x)$

$8x+672=15x$

$7x=672\\x=96$

Therefore the saving's of fiona is $96 and the saving's of Lauren's is 96+84=$180

7 0

3 years ago

A ride on a roller coaster cost 4 tickets while the boat ride onlycost 3 tickets Michael went on the two rides a total of ten ti

laila [671]

One equation that represents this statement above me could be: 4r + 3 (10-r) = 37.

How? R = Rollercoaster - B = Boat Rides

r + b = 10

37 tickets were spent so..

4*r + 3*b = 37

We just multiplied the number of rides on roller coasters and the boats with the price of both.

Now we have to express boat rides from the first equation:

b = 10-r, and express that in the second equation, now we get:

4r + 3(10-r) = 37, which is the answer.

6 0

3 years ago

(3) GEOMETRY IMAGE BELOW. 20 POINTS!!

Levart [38]

Answer:

option D

Step-by-step explanation:

option D is the correct answer of this question.

the length of the mid segment was 42 option A

( previous question ) according to me and it is right so please recheck your previous answer as it was option A not D

hope this will be helpful to you.

and mark my answer as brainlist plzzzz.

5 0

3 years ago

Read 2 more answers

Please help!!!

Dominik [7]

Answer:

Dilate Circle A by a scale factor of 4.

Step-by-step explanation:

Figure 1 shows Circles A (red) and B (green) before any transformations.

Figure 2 shows Circle A dilated about its centre by a factor of 4.

It is now apparent that every radius in A' has a corresponding radius in B, so the circles are similar.

4 0

3 years ago