3 years ago

Solve x+y= -1 x - y = -7 using elimination.

Mathematics

1 answer:

Andreas93 [3]3 years ago

6 0

Answer:

(-4, 3)

x = -4, y = 3

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What is the range of the data?

PilotLPTM [1.2K]

Answer:

is the difference between highest and lowest values.

Step-by-step explanation:

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3 years ago

The radius of a circle is 8 feet. What is the area of sector bounded by a 90° arc?

Lera25 [3.4K]

Since 90 degree is 1/4 of a circle, the area will be 1/4 th area of the full circle.

The radius is given by, r = 8 ft, therefore, the area of the full circle is,

$\begin{gathered} A=\pi\times r^2 \\ A=3.14\times8^2=200.96ft^2 \end{gathered}$

Therefore, the area of the sector is,

$A^{\prime}=\frac{1}{4}\times200.96ft^2=50.24ft^2$ $\begin{gathered} A^{\prime}=\frac{\theta}{360}\times\pi\times r^2 \\ \text{ =}\frac{\text{90}}{360}\times\pi\times8^2 \\ \text{ =}\frac{1}{4}\pi\times64=16\pi \end{gathered}$

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2 years ago

Answer this one please

Fittoniya [83]

Answer:

105 cm²

Step-by-step explanation:

We can see that the area at the square at the bottom, since one side is 5, is 5²=25. Then, we know that the height of the triangles is 8, the base is 5, and there are 4 of them, so ((5*8)/2)*4=80. Add these up to get 105 as our total

4 0

4 years ago

Did i do this correctly?

den301095 [7]

Yes u did do this correctly

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3 years ago

Read 2 more answers

Find the zeros for 2x^2-24=26. what id the positive value of x?

Oksana_A [137]

Answer:

x=5

Step-by-step explanation:

move the constant to the right

calculate

devide both sides

simplify the equation

seperate the solution

(x=5)

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2 years ago