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Jlenok [28]
3 years ago
9

At the sixth-grade school dance, there are 132 boys, 89 girls, and 14 adults.

Mathematics
1 answer:
White raven [17]3 years ago
4 0

Answer:

Step-by-step explanation:

boys:girls = 132:89

:::::

boys:girls = 132/89

:::::

boys:adults = 132:14 = 66:7

:::::

boys:adults = 66/7

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Write the equation of a line in y =mx+b<br> form that has a slope of 3/4 and a y-intercept of 0.
Rus_ich [418]

Answer:

y = ¾x  

Step-by-step explanation:

y = mx + b, where

m = slope and

b = y-intercept

If slope = ¾ and y-intercept =0,  the equation is

y = ¾x

4 0
4 years ago
(20 points)Solve the equation cos x = sin (x + 22)
Law Incorporation [45]

Answer:

\bold{x = 34^\circ}

Step-by-step explanation:

Given:

cos x = sin (x + 22^\circ)

To solve:

The given equation.

Solution:

First of all, let us consider an important property of sine and cosine.

sin(90^\circ-\theta )=cos\theta

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cos(90^\circ-\theta )=sin\theta

We can apply above property to solve for x as per given equation.

cos x = sin (x + 22^\circ)

Changing cosx to sine form:

cosx=sin(90^\circ-x)

cosx=sin(90^\circ-x) = sin(x+22^\circ)

\therefore 90^\circ-x=x+22^\circ\\\Rightarrow 90^\circ-22^\circ=x+x\\\Rightarrow 2x=68^\circ\\\Rightarrow \bold{x = 34^\circ}

So, solution to the equation cos x = sin (x + 22^\circ) is:

\bold{x = 34^\circ}

7 0
3 years ago
Find the value of z in the following equation.<br> z + 3z + 25 = 125
Y_Kistochka [10]

Answer:

25

Step-by-step explanation:

z+3z+25=125

4z=100

z=25

3 0
3 years ago
Read 2 more answers
Can you help me here pls? Asap
boyakko [2]

Step-by-step explanation:

% calculations are totally easy, if you remember to always find and the use 1%.

100% = $2.85

1% = 100%/100 = 2.85/100 = 0.0285

the price difference was

2.91 - 2.85 = $0.06

how many % are these $0.06 compared to yesterday's price ?

that is how many times 1% can fit into this number.

0.06 / 0.0285 = 2.105263158...%

so, rounded this is 2.1%

3 0
2 years ago
1 + 1 I dont know how to solve this problem please help me...
Deffense [45]

Answer:

1+1= 2

Step-by-step explanation:

or sometimes people say 11, but irl its 2

4 0
3 years ago
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