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3 years ago

Use the distributive property to simplify this expression (2-5m) (-5)

Mathematics

2 answers:

kenny6666 [7]3 years ago

8 0

Answer:

-10+25m

Step-by-step explanation:

Is that good enough for yah?

Mice21 [21]3 years ago

4 0

25m - 10

Multiply -5 by each term inside the first parentheses.

(-5 * 2) + (-5 * -5m)

-10 + 25m

Moves the terms around.

25m - 10

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A castle has to be guarded 24 hours a day five knights are ordered to split each day's guard duty equally how long will each kni

disa [49]

Answer:

Each knight will 4.8 hrs spend on guard in one day

Step-by-step explanation:

A castle has to be guarded 24 hours a day 5 knights are ordered to split each day's guard duty equally

Each knights has to guard equally l.e for equal time .

That means 24 hours time has to be equally divided among the 5 knights

= 24 / 5 = 4.8

Each knight will spend on guard in one day = 4.8 hrs

4 0

3 years ago

X 4) Find the product of 4 x 2 3/4. 18 3/4 O 7 1/2 11 O 14

Vadim26 [7]

9514 1404 393

Answer:

Step-by-step explanation:

4 × (2 3/4) = 4×2 + 4×(3/4) = 8 + 3 = 11

4 × (2 3/4) = 4 × 11/4 = 11

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3 years ago

Verify:<br>cos(2A)=(cotA-tanA)/cscAsecA

kolbaska11 [484]

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identities

cot A = $\frac{cosA}{sinA}$ , tanA = $\frac{sinA}{cosA}$ , cscA = $\frac{1}{sinA}$ , secA = $\frac{1}{cosA}$

Consider the right side

$\frac{cotA-tanA}{cscAsecA}$

= $\frac{\frac{cosA}{sinA}-\frac{sinA}{cosA} }{\frac{1}{sinA}.\frac{1}{cosA} }$

= $\frac{\frac{cos^2A-sin^2A}{sinAcosA} }{\frac{1}{sinAcosA} }$

= $\frac{cos^2A-sin^2A}{sinAcosA}$ × sinAcosA ( cancel sinAcosA )

= cos²A - sin²A

= cos2A

= left side ⇒ verified

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3 years ago

Need help ASAP!!!!!!!!!!!!!!!!!

rosijanka [135]

Answer:

A 97

Step-by-step explanation:

Adds to 180 degrees. 83 + 97 = 180

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2 years ago

What is -3 1/3 = -1/2g

Firdavs [7]

Answer:

g = 62/3 or

$g = 20 \frac{2}{3}$

Step-by-step explanation:

$- \frac{31}{3} = - \frac{1}{2} g \\ - \frac{31}{3} \times ( - 2) = g \\ \frac{62}{3} = g \\ g = \frac{62}{3} \\ g = 20 \frac{2}{3}$

8 0

4 years ago