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3 years ago

What are the benefits to using technology over a handheld compass and straightedge?

1 answer:

7 0

A benefit is the technology can be more aaurate and you can use a compass and a straightedge wrong and get lost. Also the compass can break

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4x^2-16x-5 can be written in vertex form f(x)=a(x-h)^2+k.<br> What are the values of a,h, and k.

Hunter-Best [27]

Answer:

h=2

a=4

k= -21

Step-by-step explanation:

your h and k are vertex . h= x coordinate of vertex and k= y

so formula for vertex coordinates is x= -b/2a and y= (4ac-b²)/4a

your a b c are 4 -16 and -5 respectively according to the main equation

your a is concavity which is the same number as the 'a' of the equation

5 0

3 years ago

By driving 8 mph faster than Bob, John can make a 230 mile trip in one half hour less. How fast does Bob drive on the trip? Roun

____ [38]

Answer: The speed of Bob is 56.8 km/hr.

Step-by-step explanation:

Let the speed of Bob be 'x'.

Let the speed of John be 'x-8'.

Distance covered = 230 miles

time = $1\dfrac{1}{2}=\dfrac{3}{2}\ hr$

According to question, we get that

$\dfrac{230}{x}-\dfrac{230}{x+8}=\dfrac{3}{2}\\\\230\dfrac{x+8-x}{x(x+8)}=\dfrac{3}{2}\\\\\dfrac{230\times 8}{x^2+8x}=\dfrac{3}{2}\\\\\dfrac{1840}{x^2+8x}=\dfrac{3}{2}\\\\1840\times 2=3x^2+24x\\\\3680=3x^2+24x\\\\3x^2+24x-3680=0\\\\x\approx 56.8\ km/hr$

Hence, the speed of Bob is 56.8 km/hr.

6 0

3 years ago

explain why the sine of the acute angle of V is the same regardless of which right triangle is used to find its value

balu736 [363]

Answer:

Because triangle just used to help.

P.S. I’m not sure whether I answer your question

8 0

2 years ago

How did they get -1 for -3(x-1)+3=9-2(x+1)

Ira Lisetskai [31]

Answer:

by answering hte questin

Step-by-step explanation:

3 0

2 years ago

PLZZZ HELP ASAP!!!!!!!!!!!!!!!!It is a 75 mile trip to your grandparent's house. Which divisibility rule proves that 75 is an od

TEA [102]

Divisibility by 2 would be the correct answer. Two is an even number, and the only listed at that. Odd numbers are only divisible by another odd number. Hope I helped you !

6 0

3 years ago

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