Sydnie scored 74 points in Round Two of a talent competition. This is 7 points less than three times her score in Round One. Which equation should be used to find Sydnie’s score in Round One?

Answer:

Step-by-step explanation:

Given the expression sin(9z − 1) = cos(6z + 1), for 0 < z ≤ 90, we are to find z

Note that sin theta = cos(90-thetsa)

sin(9z − 1) = cos(6z + 1)

cos (90 - (9z-1)) = cos(6z + 1)

cos (90 - 9z+1)) = cos(6z + 1)

cos (91-9z) = cos(6z + 1)

Cos will cancel out to have;

91-9z = 6z+1

-9z - 6z = 1-91

-15z = -90

z = 90/15

z = 6

Hence the value of z is 6

First Blank: 18.5

Second Blank: 37

Answer:

B. 8 hours

Step-by-step explanation:

T=d/r

84/10.5 = 8 hours

Answer:

지금 당장받는 퀴즈에 대한 도움이 정말 필요 해요 ... 그냥 질문에 무작위로 답 해주셔서 ... 미안 해요 미안 해요 .. 또한 몬스타 엑스를 아시나요, 그들은 정말 좋은 그룹입니다

Step-by-step explanation:

Answer:

x=7

Step-by-step explanation:

Answer:c

Step-by-step explanation:

Answer:

b and e are correct and f maybe

Step-by-step explanation:

Answer:

141

Step-by-step explanation:

Answer:

141

Step-by-step explanation:

Find the third angle in the triangle and using the rule that all supplementarly angles are 180 degrees, subtract the third angle from 180.

180-87-54=39, 39 is the third angle of the triangle

180-39=141 degrees, x= 141

Answer:

try B if not maybe C

Step-by-step explanation:

Answer:

3 = ?

Step-by-step explanation:

The triangles are similar, so we  can use ratios

15           12 -2

------   = --------------

15+?          12

15           10

------   = --------------

15+?          12

Using cross products

15 * 12 = 10 ( 15+?)

180 = 10 ( 15+?)

Divide each side by 10

18 = 15+?

Subtract 15 from each side

18-15 = 15+?-15

3 = ?

Answer:

1 hour and 45 minutes

and 1 hour

Step-by-step explanation:

x= run

y= walk

5x+2.5y = distance

5x+2.5(1.5)=12.5

solve for x

5x=8.75

x=1.75

1.75 in hours is 1 hour and (60*.75)=45

1 hour and 45 minutes

" If the marathon race participant ran for 2 hours, how many hours did the participant walk?"

We use the same equation

5x+2.5y=distance

we'll assume that they till walked 12.5 miles

which means that

5(2)+2.5y=12.5

solve for y

2.5=2.5y

y=1

1 hour

Answer:

Everybody, everybody

Get out on the floor

It can get a little crazy

When the kick hits the floor

Make a scene Make a scene

Nobody can ignore

Don't knock it, til you rock it

We can't take it no more!

Bring the lights up!

Bust the doors down!

Dust yourself off,

Shake it up!

Shake it up!

DJ set it off!

Take it up a notch

All together now!

Shake it up!

Shake it up!

Step-by-step explanation:

Step-by-step explanation:

If x=20 3x/5=12

Then if y=30 3y/5=18

It shows that A'B'C' smaller than ABC

Answer:

The correct statement is D

Step-by-step explanation:

Triangle A'B'C' is a diluted version of triangle ABC, so it would be smaller than triangle ABC since its x-value and y-value are being multiplied by a number less than 1.

Answer:

X=12

y=34

z=45

m=33

n=27

z=27

Step-by-step explanation:

there u go

Answer:

23) x -3 = 9

x=9+3=12

24) y-11=23

y=23+11=34

25) z-8=37

z=37+8=45

26) m-16=17

m=17+16=33

27) n-9=18

n=18+9=27

28) z-14=13

z=13+14=27

Answer:

Step-by-step explanation:

10% of 10.40=1.04

10.40+1.04=11.44

Answer:

step 2 is the answer. when you start the question it's already in pemdas order. 48÷6 equals 8 then multiply it by the other 8 then you can add that quotient to the 10 which is 74 then subtract it by 7 and you get 67. step 2 goes the wrong way and ads the 8 with the 10 before multiplying the 8 by the 8 making everything go in wrong turns.

Answer: sin L= 3 cos L= 3 tan L= 3 sin M= 5 cos M= 5 tan M= 5

Step-by-step explanation:

im just like that

Answer:

14.4

Step-by-step explanation:

Area= 72 cm^2

Base= 10 cm

height= ?

Area= base x 1/2 x height

72 = 10 x 1/2 x h

72= 5 x h

72/5 = h

h= 14.4

Answer:

x = 30

Step-by-step explanation:

So, you want to get 'x' by itself

0.25x + 7.5 = 15

           - 7.5   -7.5

0.25x = 7.5

---------   ------

0.25     0.25

x = 30

Answer:

82

Step-by-step explanation:

vote brainiest plzz

Answer:

8

Step-by-step explanation:

7 and 8 are the angles so we need to find the decimal in the problem

Answer:

yes

Step-by-step explanation:

Answer:

yes!

Step-by-step explanation:

4 + 15 = 19

1 + 15 = 16

hope that helped! i'm not the best at explaining stuff, srry!

Answer:

4) [tex]3\sqrt{3}[/tex] 5) [tex]10\sqrt{18}[/tex]

Step-by-step explanation:

[tex]27[/tex] can be broken down into [tex]3[/tex] and [tex]9[/tex]

[tex]\sqrt{27}=[/tex][tex]\sqrt{9}[/tex] × [tex]\sqrt{3}[/tex]

However, [tex]\sqrt{9} =3[/tex], so its really just:

[tex]3\sqrt{3}[/tex]

[tex]1800[/tex] can be broken down into [tex]100[/tex] and [tex]18[/tex]

[tex]\sqrt{1800} =[/tex][tex]\sqrt{100}[/tex] × [tex]\sqrt{18}[/tex]

However, [tex]\sqrt{100} =10[/tex], so it is really:

[tex]10\sqrt{18}[/tex]

plz mark me brainliest. :)

I didn't understand your question.

Answer:

800m

Step-by-step explanation:

porque incremento de un día

Answer:

---> --->  

WS  DS

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

Answer:

(-7,-9) and (7,9)

Step-by-step explanation:7,-9 so we do across the x so you need a graph for this now x goes left so we plot the coordinates in the third box 7,-9 is in the 4 box so after we plotted that you can see it reflects.Now y coordinate since the y line goes up we plot the coordinates on top of the 4 box where our original coordinates stay now it should be 7,9 the y becomes positive which is 9.

This is not a web answer i answered myself took me some time!

Answer:

(‿!‿) ԅ(≖‿≖ԅ)

Step-by-step explanation:

Answer:

The answer is D. choice B. The coordinate point CAN share the same y point but, CANNOT share the same x point

Step-by-step explanation:

For all values of x, y = - 6

Your function:

y = - 6