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4 years ago

5

Solve the following system of equations. Express your answer as an ordered pair in the format (a,b), with no spaces between the

numbers or symbols. 3x+4y=17 -4x-3y= -18

1 answer:

solong [7]4 years ago

6 0

Answer:(3,2)

Step-by-step explanation:

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Round 88.27 to the nearest one.

allsm [11]

Answer:

88

Step-by-step explanation:

Basically you look at the number after the decimal point and if it is below 5 it will turn to 88. If it is over 5 it will be a 89. For this you also ignore the 7. The 7 does not mean anything.

4 0

3 years ago

A circular pool has a radius of 10 meters. Rounded to the nearest square meter, what is the area of the pool?

lubasha [3.4K]

Answer:

D. 314 m²

Step-by-step explanation:

Area of circle= π r²

Radius = r = 10 meter

By putting radius in formula we get

area = 314.159 m² and nearest square meter is 314 m²

3 0

3 years ago

Read 2 more answers

Please help with this question

UkoKoshka [18]

Answer:

(-2,1) and (5,-4)

Step-by-step explanation:

5 0

3 years ago

Could someone pls help me out ???

professor190 [17]

Answer:

Option C.

Step-by-step explanation:

$\sf\:x^{2}-3x+7=0$

Use the biquadratic formula.

$\sf\:\x=\frac{-\left(-3\right)(+/-)\sqrt{\left(-3\right)^{2}-4\times 7}}{2}$

$\sf\:x=\frac{-\left(-3\right)(+/-)\sqrt{9-4\times 7}}{2}$

$\sf\:x=\frac{-\left(-3\right)(+/-)\sqrt{9-28}}{2}$

$\sf\:x=\frac{-\left(-3\right)(+/-)\sqrt{-19}}{2}$

$\sf\:x=\frac{3(+/-)\sqrt{19}}{2}$

Positive sign:

$\boxed{\sf\:x=\frac{3+\sqrt{19}}{2}}$

Negative sign:

$\boxed{\sf\:x=\frac{3-\sqrt{19}}{2}}$

Hope it helps ⚜

5 0

2 years ago

Kevin is 4 times as old as Daniel and is also 6 years older than Daniel

MAXImum [283]

Answer:

Part a) Daniel's age is 2 years

Part b) Kevin's age is 8 years

Step-by-step explanation:

<u><em>The question is </em></u>

Part a) How old is Daniel?

Part b) How old is Kevin?

Let

x ----> Kevin's age

y ----> Daniel's age

we know that

$x=4y$ -----> equation A

$x=y+6$ ----> equation B

Equate equation A and equation B

$4y=y+6$

solve for y

$4y-y=6$

$3y=6$

$y=2$

therefore

Daniel's age is 2 years

<em>Find the value of x</em>

substitute the value of y in any of the two equations

$x=4(2)=8\ years$

$x=2+6=8\ years$

therefore

Kevin's age is 8 years

6 0

3 years ago