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4 years ago

Solve the system of equations. – 3y +51 = 26 – 2y - 51 = -16

Mathematics

2 answers:

Natalka [10]4 years ago

6 0

Answer:

-2

Step-by-step explanation:

add both equations up

-5y = 10 ➡ y = -2

marissa [1.9K]4 years ago

5 0

Answer:

y= -2

Step-by-step explanation:

ADDING BOTH EQUATIONS

-3y + 51 =26

-<u>2y -51 = -16</u>

-5y = 10

-5y/5 = 10/5

-y =2

y = -2

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3 years ago

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4 years ago

Read 2 more answers

graph each equation for the interval -360 is less than or equal to x and 360 is greater than or equal to x: y=1/2cos(2x+60)

lianna [129]

Answer:

See graph

Step-by-step explanation:

We want to graph $y=\frac{1}{2}\cos(2x+60\degree)$ on the interval $-360\degree \le x \le 360\degree$

We need to plot some few points

$(-30\degree,\frac{1}{2})$

$(-15\degree,\frac{\sqrt{3}}{4})$

$(0\degree,\frac{1}{4})$

$(15\degree,0)$

$(30\degree,-\frac{1}{4})$

$(45\degree,-\frac{\sqrt{3}}{4})$

$(60\degree,-\frac{1}{2})$

$(75\degree,-\frac{\sqrt{3}}{4})$

$(90\degree,-\frac{1}{4})$

$(105\degree,0)$

$(120\degree,\frac{1}{4})$

$(135\degree,\frac{\sqrt{3}}{4})$

$(150\degree,\frac{1}{2})$

This will give us one cycle.

We then use the pattern to complete the graph on the interval

$-360\degree \le x \le 360\degree$

6 0

3 years ago

Elena has some bottles of water that each holds 17 fluid ounces. A. Write an equation that relates the number of bottles of wate

Fudgin [204]

Answer:

A. y = 17x

B. 867 fluid ounces

C. 3 bottles

Step-by-step explanation:

There are few bottles of water that each contain 17 fluid ounces of water.

A. If the number of bottles is given by x and the total volume of water those bottles contain is y in fluid ounces, then the equation that relates x and y is

y = 17x ...... (1) (Answer)

B. If x =51, then the volume of water in 51 bottles will be given by equation (1) as

y = 51 × 17 = 867 fluid ounces. (Answer)

C. If y = 51 fluid ounces, then from equation (1), the number of bottles will be given by x = 51/17 =3 bottles. (Answer)

8 0

3 years ago

Simplify 5.5a-1+21b+3a<br> Please help me

tino4ka555 [31]

8.5a-1+21b. :)) sorry

4 0

4 years ago