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2 years ago

8

Hi help me 2 be cool

1 answer:

bearhunter [10]2 years ago

3 0

Answer:

A

Step-by-step explanation:

d≈5.09

Using the formulas

C=2πr

d=2r

Solving for d

d=C/π=16/π≈5.09296

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Plsss help no spam.<br><br><br><br>.....................

gregori [183]

Answer:

Third one.

x=6 y=12

Ok!

7 0

3 years ago

Read 2 more answers

Drag the tiles to the correct boxes to complete the pairs. Match the systems of equations with their solutions.

Oksanka [162]

Answer:

See explanation for matching pairs

Step-by-step explanation:

Equations

(1)

$x - y = 25$

$2x + 3y = 180$

(2)

$2x - 3y = -5$

$11x + y = 550$

(3)

$x - y = 19$

$-12x + y = 168$

Solutions

$(-17,-36)$

$(47, 33)$

$(51, 26)$

Required

Match equations with solutions

(1) $x - y = 25$ and $2x + 3y = 180$

Make x the subject in: $x - y = 25$

$x = 25 + y$

Substitute $x = 25 + y$ in $2x + 3y = 180$

$2(25 + y) + 3y = 180$

$50 + 2y + 3y = 180$

$50 + 5y = 180$

Collect like terms

$5y = 180-50$

$5y = 130$

Solve for y

$y =26$

Recall that: $x = 25 + y$

$x = 25 + 26$

$x = 51$

So:

$(x,y) = (51,26)$

(2) $2x - 3y = -5$ and $11x + y = 550$

Make y the subject in $11x + y = 550$

$y = 550 - 11x$

Substitute $y = 550 - 11x$ in $2x - 3y = -5$

$2x - 3(550 - 11x) = -5$

$2x - 1650 + 33x = -5$

Collect like terms

$2x + 33x = -5+1650$

$35x = 1645$

Solve for x

$x = 47$

Solve for y in $y = 550 - 11x$

$y = 550 - 11 * 47$

$y = 550 - 517$

$y = 33$

So:

$(x,y) = (47,33)$

(3)

$x - y = 19$ and $-12x + y = 168$

Make y the subject in $-12x + y = 168$

$y = 168 + 12x$

Substitute $y = 168 + 12x$ in $x - y = 19$

$x - 168 - 12x = 19$

Collect like terms

$x -12x = 168 + 19$

$-11x = 187$

Solve for x

$x = -17$

Solve for y in $y = 168 + 12x$

$y =168-12 *17$

$y =-36$

So:

$(x,y) = (-17,-36)$

4 0

2 years ago

(a(1) = -2<br> [a(n) = a(n − 1) – 5<br> Find the 4th term in the sequence.

lesya [120]

Answer:

wait of a ?

Step-by-step explanation:

7 0

3 years ago

-7x=63<br> Please show full work

STALIN [3.7K]

Answer:

x=70

Step-by-step explanation:

1)Write equation

2)Put line through equal sign

3) under -7n add 7

4)add 7 to 63 also

5)answer 63+7=70

6)x=70

7 0

3 years ago

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Expand.<br> Your answer should be a polynomial in standard form <br> −5q 2 (−q−5)

Brut [27]

Answer:

(i think)

5q3+25q2

Step-by-step explanation:

To write a polynomial in standard form, simplify and then arrange the terms in descending order.a

x2+bx+c

5⋅1(q2q)+25q2

Simplify each term

answer- 5q3+25q2

5 0

2 years ago