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3 years ago

I need help over here

Mathematics

2 answers:

LenaWriter [7]3 years ago

7 0

Answer:

20m because a semi circle's radius is equal to the edge times 3 but in this case one edge isn't part

mina [271]3 years ago

5 0

Answer:

The area consists of 3 semi-circles and a square

A) A = 3*1/2πr² + a²

A = 3/2*3.14*(10/2)² + 10² = 217.75 m²

A = 3/2*22/7*5² + 10² = 217.85 m²

217.75*8 = $1742

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Solve for the value of x 3x - 9 + 12 - 6x = -18

Daniel [21]

Answer:

x =7

Step-by-step explanation:

3x - 9 + 12 - 6x = -18

Combine like terms

-3x +3 = -18

Subtract 3 from each side

-3x +3 -3 = -18 -3

-3x = -21

Divide each side by-3

-3x /-3 = -21 /-3

x =7

8 0

3 years ago

Read 2 more answers

Aspen can work 25 math problems in 12 and half minutes. How long will it take her to work 38 problems?

ikadub [295]

B)19
25/12.5=2
38/2=19

7 0

4 years ago

Find ML, JK=3x+11, ML=10x-12, NP=45

tigry1 [53]

Answer:

$ML = 58$

Step-by-step explanation:

Given

$JK=3x+11, ML=10x-12, NP=45$

See attachment

Required

Length ML

First, calculate x using the following equivalent ratios

$JK : NP = NP : ML$

Express as fraction

$\frac{JK }{ NP} = \frac{NP }{ ML}$

Cross Multiply

$JK * ML = NP * NP$

Substitute values:

$(3x +11) * (10x - 12) = 45 * 45$

Expand

$30x^2 - 36x + 110x - 132 = 2025$

$30x^2 +74x - 132 = 2025$

Collect like terms

$30x^2 +74x - 132 - 2025=0$

$30x^2 +74x -2157=0$

Using a calculator:

$x \approx -10$ and $x \approx 7$

Given that:

$ML=10x-12$

Substitute values for x

$ML=10*-10-12 = -100 - 12 = -112$

$ML=10*7-12 = 70 - 12 = 58$

ML cannot be negative; So:

$ML = 58$

5 0

3 years ago

CAN U GUYS HELP? WE REVIEWED THIS IN 8TH GRADE IM NOW A FRESHMAN AND COMPLETELY FORGOT! PLEASE HELP ASAP!

uranmaximum [27]

B because -4-6 = -10, so -4+-6 also equals -10

7 0

4 years ago

Read 2 more answers

13,818,345. Round to nearest hundred thousand please?

slega [8]

Answer:

13,800,000

Step-by-step explanation:

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3 years ago