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Travka [436]
3 years ago
9

Please help

Mathematics
1 answer:
Whitepunk [10]3 years ago
5 0

Answer:

7.5 units²

Step-by-step explanation:

½ × a × b × sinC

½ × 5 × 8 × sin(22)

7.492131868

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Can someone help me? It's urgent and thank you!
Irina-Kira [14]

Answer:

option A

Step-by-step explanation:

\frac{x+ 3}{12x} \ \cdot \ \frac{4x}{x^2 +x - 6}\\\\= \frac{x+ 3}{12x} \ \cdot\ \frac{4x}{x^2 +3x - 2x - 6}\\\\= \frac{x+ 3}{12x} \cdot \frac{4x}{x(x + 3) -2(x+3)}\\\\= \frac{x+ 3}{12x} \cdot \frac{4x}{(x + 3)(x -2)}\\\\= \frac{1}{12x} \ \cdot \ \frac{4x}{(x - 2)} \ \ \ \ \  \ \ \ \ \ \ \ \ \ \ \ \ \  \\\\= \frac{1}{3} \ \cdot \ \frac{1}{(x - 2)}\\\\= \frac{1}{3(x - 2) }

5 0
3 years ago
Abe is going to plant 54 oak trees and 27 pine trees. Abe would like to plant the trees in rows that all have the same number of
Virty [35]

Answer:

9

Step-by-step explanation:

The GCF between 54 and 27 is nine.

4 0
3 years ago
Read 2 more answers
Valuate the xpression 4(10-4) power of 2 devided by 4
liq [111]

Hence, the value of the expression is 36.

Solution:

Step 1: Given expression is 4(10-4)^{2} \div 4.

BODMAS means do Bracket, Of, Division, Multiplication, Addition, Subtraction

Step 2: Using BODMAS rule first simplify the expression which is in bracket.

⇒ 4(10-4)^{2} \div 4=4(6)^2\div4

Step 3: Squaring of the number 6.

⇒ 4(6)^2\div4=4\times36\div4

Step 4: Using BODMAS rule, divide 36 by 4.

⇒ 4\times36\div4=4\times9

Step 5: Using BODMAS rule, multiply 4 with 9.

⇒ 4\times9=36

Hence, the value of the expression is 36.

8 0
3 years ago
What is4-8a=4(5-3a)​
kenny6666 [7]

Answer:

a=4

Step-by-step explanation:

<u>Question: 4-8a=4(5-3a)</u>

<u />

1) Distribute 4 to 5 and -3a:

4-8a=20-12a

2) Add 12a to both sides:

4+4a=20

3) Subtract 4 from both sides:

4a=16

4) Divide both sides by 4:

a=4

Footnotes:

- The <em>Distributive</em> property says a(b+c)=ab+ac

7 0
3 years ago
Read 2 more answers
Which point is on the line that passes through point Z and is perpendicular to line AB? (–4, 1) (1, –2 ) (2, 0) (4, 4)
AlladinOne [14]

For this case we have that if the line that passes through point z is perpendicular to line AB, it is fulfilled that:

m * m_ {AB} = - 1

We find the slope of AB:

m_ {AB} = \frac {y2-y1} {x2-x1}

We choose the points that go through AB:

(-2.4)

(0, -4)

m_ {AB} = \frac {-4-4} {0 - (- 2)}\\m_ {AB} = \frac {-8} {2}\\m_ {AB} = - 4

So:

m * -4 = -1\\m = \frac {1} {4}

On the other hand, the point z is (0,2).

Then the cut point with the "y" axis is 2.

The equation of the line is:

y = \frac {1} {4} x + 2

We test the points:

(-4,1)

1 = \frac {1} {4} (- 4) +2\\1 = -1 + 2\\1 = 1

Is fulfilled

(1, -2)

-2 = \frac {1} {4} (1) +2\\-2 = \frac {1} {4} +2

It is not true

(2,0)

0 = \frac {1} {4} (2) +2

It is not true

(4,4)

4 = \frac {1} {4} (4) +2\\4 = 1 + 2

It is not true

Answer:

Option A

5 0
3 years ago
Read 2 more answers
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