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3 years ago

HELP HELP !!!! PLEASE I NEED HELP WITH THIS PROBLEM !!!

Mathematics

2 answers:

Brilliant_brown [7]3 years ago

8 0

Thats gonna be graph A

Vesnalui [34]3 years ago

3 0

This one is best done by elimination:

We need to start 4 meters away, so B is clearly wrong.

We first move towards Mr. Wilson (i.e. distance is decreasing) so A is wrong.

Our speed is faster on the way back, so the two sloped section must have differing slopes, so D is wrong.
(D also doesn't start at 4, it's wrong for two reasons.)

Only C is left.

We can check each part to make sure. First we start at 4m, then move away, then stay still (zero slope) for three seconds, then move back faster (higher slope). All parts check out ok.

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3 years ago

Simplify the expression: 6 + 8j - 9j + -5j - 3

dangina [55]

So first you’ll combine the J’s.
8j - 9j = 1j
+ -5j
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4 years ago

Harry went to the bakery with $50 to buy cupcakes and fruit tarts. One cupcake costs $3.50 and one fruit tart costs $3. Harry bo

mote1985 [20]

Answer:

$28+3x\leq 50$

Step-by-step explanation:

We are given the following in the question:

Cost of one cupcake = $3.50

Cost of one fruit tart = $3

Total money Harry have = $50

Harry bought 8 cupcakes and $x$ fruit tarts.

We have to write the inequality giving relation between the total number of cupcakes and fruit tarts Harry can buy the amount of money he has.

Total cost of purchase =

= Total cost of cupcakes + Total cost of fruit tarts

$=(8\times 3.50) + (x \times 3)\\=28 + 3x$

Now, this total cost of Harry's purchase should be less than than equal to $50.

$28+3x\leq 50$

is the required linear inequality.

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3 years ago

Find a quadratic equation whose solution is -5 (only solution)

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X2-6x+5 is the quadratic eqution

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4 years ago