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2 years ago

This the another answer

Mathematics

1 answer:

VARVARA [1.3K]2 years ago

3 0

Answer:

the second one

Step-by-step explanation:

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madreJ [45]

B
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7 0

2 years ago

Write the slope intercept form through: (5,1) and(2, -2)

victus00 [196]

We see that the slope of this line is $\frac{-2-1}{2-5}=1,$ so we plug this and the point $(5,1)$ into the point-slope form $y-y_1=m(x-x_1)$ (note that there's nothing special about the point I picked; you can choose any point on the line):

$y-1=x-5.$ This rearranges to the slope-intercept form $\boxed{y=x-4}.$

3 0

2 years ago

Pixel goes shopping with one hundred dollars and ends up buying three different types of items: A, B, and C. The unit price of A

mixas84 [53]

Answer:

A - 16, B - 79, C - 5

Step-by-step explanation:

Given

A costs 5$
B costs $0.25
C costs $0.05
A + B + C = 100
5A + 0.25B + 0.05C = 100 ⇒ 100A + 5B + C = 2000

Subtract the first equation from the second:

99A + 4B = 1900

We have a restriction in numbers:

0 < A, B, C < 100

Since 4B can be max 400, we get 99A > 1500 and 99A < 1900 so:

A > 1500/99 > 15

and

A < 1900/99 < 19

A can be 16 or 18 as it should be even number to get B the whole number.

If A = 16:

99*16 + 4B = 1900
4B = 1900 - 1584
4B = 316
B = 316/4 = 79

If A = 18:

99*18 + 4B = 1900
4B = 1900 - 1782
4B = 118
B = 118/4 = 29.5, discarded as decimal

So we get:

A = 16, B = 79 and C = 100 - (16 + 79) = 5

Let's proof the numbers:

16*5 + 79*0.25 + 5*0.05 = 100, confirmed

5 0

1 year ago

Show that (n+3)2 - (n-3)2 is an even number for all positive interger values of n

Zolol [24]

$(n+3)^2-(n-3)^2=\\
n^2+6n+9-(n^2-6n+9)=\\
n^2+6n+9-n^2+6n-9=\\
12n$

7 0

2 years ago

Read 2 more answers

If there are 16 ounces in a pound how manyh are in 24 ounces

iren2701 [21]

16 ounces = 1 pound
1 ounce = 1/16 pound
24 ounces = 1/6 x 24 = 4 pounds

Answer: 4 pounds

7 0

2 years ago