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jonny [76]
3 years ago
15

Solve this for me please

Mathematics
1 answer:
Minchanka [31]3 years ago
6 0
This is how u solve it

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GIVING BRAINLIEST Green Middle School has 270 boys, 250 girls, 26 teachers, and a supporting staff of 5 employees. The school us
salantis [7]

Answer:

b 119,600

Step-by-step explanation:

250+270+26+5=551 250+270 = 520 520/551 ~94%

94% of 126,776~ 119,600

8 0
3 years ago
Solve by Substitution<br> Show Steps<br> −2x + 3y + 5z = −21<br> −4z = 20<br> 6x − 3y = 0
Anarel [89]

−2x + 3y + 5z = −21

−4z = 20

6x − 3y = 0

do -4z=20 first

divide both sides by -4 to get z by itself

-4z/-4=20/-4

z=-5

Use z=-5 into −2x + 3y + 5z = −21

-2x+3y+5(-5)=-21

-2x+3y-25=-21

move -25 to the other side

sign changes from -25 to +25

-2x+3y-25+25=-21+25

-2x+3y=4

6x-3y=0

find x by eliminating y

Add the equations together

-2x+6x+3y+(-3y)=4+0

-2x+6x+3y-3y=4

4x=4

Divide by 4 for both sides

4x/4=4/4

x=1

Use x=1 into 6x − 3y = 0

6(1)-3y=0

6-3y=0

Move 6 to the other side

6-6-3y=0-6

-3y=-6

Divide both sides by -3

-3y/-3=-6/-3

y=2

Answer:

(1, 2, -5)

5 0
4 years ago
Read 2 more answers
Please help please need answer
RoseWind [281]

a)12cm by 3cm

b) it's an enlargement

5 0
3 years ago
A sinusoidal function whose period is 1/2, maximum value is 10, and minimum value is -4, has a y-intercept of 3. What is the equ
nikdorinn [45]
Period of sin wave = 1/2
Period of parent sine function is 2π.

This means the x value of sine function (sin(x)) has to be divided by 4π to get a period of 1/2 because 2π/4π = 1/2

Thus, our function will be of the form: sin( \frac{x}{4 \pi })

Maximum Value = 10 
Minimum Value = -4

Amplitude of the function = (Maximum Value - Minimum Value)/2
So, amplitude of the function is 7 

Thus, the function will be of the form:

7sin( \frac{x}{4 \pi } )

The function has a y-intercept other than zero, this means the function will be of the form:

y=7sin( \frac{x}{4 \pi } )+k

The y-intercept is 3. This means for x=0, y=3. Using the values, we get:

3=7sin(0)+k \\  \\ &#10;3=k

Thus the equation of the sinusoidal function becomes:

y=7sin( \frac{x}{4 \pi } )+3

6 0
4 years ago
Select all of the questions for which x=3 is a solution
Brrunno [24]

Answer:

there are no questions

Step-by-step explanation:

5 0
3 years ago
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