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3 years ago

Some1 hurry up and help me plzzz!!!

Mathematics

2 answers:

jekas [21]3 years ago

8 0

Statement D is false, -1 ≠ -(-1) because -1 ≠ 1

sladkih [1.3K]3 years ago

4 0

The answer is D hope this helps

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Y=6-x In this case, what would be the slope and y-intercept? I'm having a hard time trying to get it to the y=mx+b format.

frutty [35]

Answer:

Slope = $\frac{-1}{1}$ or -1

y = 6

Step-by-step explanation:

The equation given (y = 6 - x) is the same as saying

y = -1x + 6

Since we have a negative x variable and a positive 6 and would also be graphed the same. The only difference is that the second equation I just mentioned resembles the y = mx + b expression more. In this case the slope would be

Slope = $\frac{-1}{1}$ or -1

While the y-intercept would be

y = 6 - x

y = 6 - 0

y = 6

4 0

3 years ago

Lottie buys a pack of 50 cans of lemonade.

malfutka [58]

Answer:

£15.7

Step-by-step explanation:

32 cans x 50P = 1600p

1600p to Pounds = £26.66 (1600 divided by 60)

Remaining cans = 18 (50 - 32)

18 cans x 20p = 360p

360p to Pounds = £6 (360 divided by 60)

£26.66 + £6 = £32.66

£32.66 (Profit) - £17 (Cost of cans) = £15.66

15.66 to 3SF = 15.7

3 0

2 years ago

Read 2 more answers

JK ∥ NM. If JL = 32, LM = 20, and JK = 60, what is the length of NM

igor_vitrenko [27]

Answer:

NM= JL + LM + JK

NM= 32 + 20 + 60

NM= [112]

NM= 10,58

Step-by-step explanation:

Hope it helps!!

8 0

2 years ago

PLEASE HELP

bekas [8.4K]

A because the perimeter of a square is
s=side length
P=perimeter
P=s×4
the is 72 so
72=s×4

5 0

4 years ago

Read 2 more answers

A student in Greece discovers a pottery bowl that contains 28% of its original amount of C-14 find the age of the pottery bowl t

Andreyy89

Answer:

The age of the pottery bowl is 10523 years.

Step-by-step explanation:

Amount of substance:

The amount of a substance after t years is given by the following equation:

$A(t) = A(0)(1-r)^t$

In which A(0) is the initial amount and r is the decay rate.

Half-life of C14.

Researching, the half-life of c-14 is 5730 years.

This means that:

$A(5730) = 0.5A(0)$

We use this to find r. So

$A(t) = A(0)(1-r)^t$

$0.5A(0) = A(0)(1-r)^{5730}$

$(1-r)^{5730} = 0.5$

$\sqrt[5730]{(1-r)^{5730}} = \sqrt[5730]{0.5}$

$1 - r = 0.5^{\frac{1}{5730}}$

$1 - r = 0.99987903922$

$A(t) = A(0)(0.99987903922)^t$

Age of the pottery bowl:

We have that:

$A(t) = 0.28A(0)$

We have to find t. So

$A(t) = A(0)(0.99987903922)^t$

$0.28A(0) = A(0)(0.99987903922)^t$

$(0.99987903922)^t = 0.28$

$\log{(0.99987903922)^t} = \log{0.28}$

$t\log{0.99987903922} = \log{0.28}$

$t = \frac{\log{0.28}}{\log{0.99987903922}}$

$t = 10523.1$

The age of the pottery bowl is 10523 years.

6 0

3 years ago