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3 years ago

Help me with this please

Mathematics

1 answer:

babymother [125]3 years ago

3 0

Answer:

When w = 8, w² - 4w - 2 = 30.

Step-by-step explanation:

w² - 4w - 2

Substitute value w = 8.

8² - 4(8) - 2

Square 8.

64 - 4(8) - 2

Multiply -4 and 8.

64 - 32 - 2

Subtract 32 from 64.

32 - 2

Subtract 2 from 32.

30.

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Suppose that there are two types of tickets to a show: advance and same-day. The combined cost of one advance ticket and one sam

xeze [42]

X = advance
y= same day

x+y=70

30x+15y=1650

--------------------------
30x+15y=1650
- x+y=70 (x15) -> 15x+15y=1050
--------------------------
30x+15y=1650
-15x+15y=1050
--------------------------
15x=600
x=600/15
x=40

so now u can insert the price of x AKA the price of the advanced ticket to find our the price of the same day ticket.

x+y=70
so
40+ y=70
y=70-40
y=30

x = advance =40
y= same day =30

8 0

3 years ago

Find the sum (the question is in the photo)

stich3 [128]

x3+3x2−4

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9x4−12x2

Algebra isn't fun. Hope that helps though!

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3 years ago

Robin is a competitive archer. Her average arrow is within 6.5 cm of the center of the bullseye. John, Robin's trainer, keeps cl

polet [3.4K]

Answer:

Arrow C.

Step-by-step explanation:

Out of three arrows, nearest arrow from the origin will be the best arrow.

Ordered pair for arrow A → (-5, 4)

Distance between A and bullseye = $\sqrt{(y_{2}-y_{1})^2+(x_{2}-x_{1})^2}$

= $\sqrt{(0+5)^2+(0-4)^2}$

= $\sqrt{41}$

= 6.40 units

Ordered pair for arrow B → (5, -5)

Distance between B and bullseye = $\sqrt{(0-5)^2+(0+5)^2}$

= $5\sqrt{2}$

= 7.1 units

Ordered pair for arrow C → (-2, -6)

Distance between C and the bullseye = $\sqrt{(0+2)^2+(0+6)^2}$

= $\sqrt{40}$

= 6.32 units

Distance between C and the bullseye is the shortest.

Therefore, arrow C will be the best arrow.

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4 years ago

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Vlad1618 [11]

Answer:

It's very simple. In 4 decimal digits there are 10,000 (0000 to 9999) possible values. The odds of any one of them coming up randomly is one in 10,000. A specific "4 digit number" would have 1/9000 chance, since there are 9000 4 digit numbers (1000-9999).

Step-by-step explanation:

5 0

2 years ago

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Jackie sold 48 pints of lemonade at her stand. How many quarts of lemonade did she sell? (1 quart = 2 pints)

Rufina [12.5K]

OK. Since One quart= 2 pints, divide the number of pints (48) by 2.
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4 years ago

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