3 years ago

Given: BA = 6 feet

Mathematics

1 answer:

bogdanovich [222]3 years ago

3 0

The answer is definitely not 7.777777

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What is the value of 9+21 (13+5)? A.287 B.395 C.387 D.540

Vika [28.1K]

Follow the order of operations
1. parentheses (13+5) = 18
2. multiplication 21*(13+5) = 21*18 = 378
3. add 9 + 21*(13+5) = 9 + 378 = 387

Hope this helps!

6 0

3 years ago

Read 2 more answers

7x-8y=13 solve for y

Gala2k [10]

Get y alone
so
-8y=13-7x (by subtracting 7x from both sides)
now you still want y by itself so you divide by -8
leaving you with
y=-13/8 + 7/8

5 0

3 years ago

Part A: Using complete sentences, explain how to convert zero point 22 repeating to a fraction. (2 points)

Helen [10]

Answer:

a) $\frac{2}{9}$

b) Irrational

Step-by-step explanation:

a) Let $y=0.\bar2.....(a)$

Then $100y=22.\bar2.....(b)$

Subtract (a) from (b)

$100y-y=22.\bar2-0.\bar2$

$\implies 99y=22$

$y=\frac{22}{99}=\frac{2}{9}$

b) From part a) $0.\bar2$ is a rational number but $\sqrt{112}=4\sqrt{7}$ is an irrational number.

But $0.\bar2\times \sqrt{112}$ is not a rational number because the product of a rational number and an irrational number is an irrational number.

3 0

4 years ago

X³+2x²-15x, x²-7x+12 and 3x²-27 find h.c.f

RideAnS [48]

Answer:

${x}^{3} + 2 {x}^{2} - 15x \\ x( {x}^{2} + 2x - 15) \\ x( {x}^{2} + 5x - 3x - 15) \\ x(x(x + 5) - 3(x + 5) \\ x((x + 5)(x - 3)) \\ {x}^{2} -7x + - 12 \\ {x}^{2} - 4x + 3x - 12 \\ x(x - 4) + 3(x - 4) \\ (x - 4)(x + 3) \\ 3 {x}^{2} - 27 \\ 3( {x}^{2} - 9) \\ 3((x + 3)(x - 3)) \\ \\ the \: hcf \: = (x + 3)$

6 0

2 years ago

PLEASE ANSWER!!! Find mZV. (2x + 29) (10x7 - 27)

evablogger [386]

2x+29=10x-27
29=8x-27
56=8x
x=7

2(7)+29=43
10(7)-27=43
360-43(2)=274
274/2=137
measure of V = 137

7 0

3 years ago