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3 years ago

Can someone help please

Mathematics

1 answer:

galben [10]3 years ago

7 0

Answer:

(3, -2)

Step-by-step explanation:

after flipping the triangle over the y axis the new point A would be at (1,1)

then following the translation the point would move right twice and down twice leaving the new point A at (3, -2)

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Given k // l, what can you conclude about these triangles? Check all that apply.

olasank [31]

Answer:

A C E

Step-by-step explanation:

it would be A C E because the corresponding angles are similar, angles 5 and 3 are both alternate exterior angles, the following verticals angles(1 and 4) are equivalent to each other. so yeah, its NOT ABC.

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4 years ago

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Susanna uses 7.4 pints of white paint and blue paint to paint her bedroom walls. 3/5 of this amount is white paint, and the rest

pochemuha

Answer:

It is 6.8

Step-by-step explanation:

3/5 in decimal form is 0.6, so 7.4 - 0.6 is 6.8.

*Hope this helps*

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3 years ago

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How do i solve this? and what’s the answer?

Vika [28.1K]

Im pretty sure x y should be 30, I hope this helps.

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3 years ago

Drag the cards below to create an expression that is equal to<br> 6/5 / * 5 6 pls help!!!

Angelina_Jolie [31]

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Step-by-step explanation:

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3 years ago

An Archaeologist in Turkey discovers a spear head that contains 79% of its original amount of C-14. Find the age of the spear he

agasfer [191]

Answer:

The age of the spear head is of 1938 yers.

Step-by-step explanation:

The amount of carbon 14 after years is given by the following equation:

$Q(t) = Q(0)e^{-rt}$

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

The half life of carbon 14 is 5700 years.

This means that $Q(5700) = 0.5Q(0)$

$Q(t) = Q(0)e^{-rt}$

$0.5Q(0) = Q(0)e^{-5700r}$

$e^{-5700r} = 0.5$

$\ln{e^{-5700r}} = \ln{0.5}$

$-5700r = \ln{0.5}$

$5700r = -\ln{0.5}$

$r = -\frac{\ln{0.5}}{5700}$

$r = 0.00012160476$

$Q(t) = Q(0)e^{-0.00012160476t}$

We have to find:

t for which Q(t) = 0.79Q(0). So

$Q(t) = Q(0)e^{-0.00012160476t}$

$0.79Q(0) = Q(0)e^{-0.00012160476t}$

$e^{-0.00012160476t} = 0.79$

$\ln{e^{-0.00012160476t}} = \ln{0.79}$

$-0.00012160476t = \ln{0.79}$

$0.00012160476t = -\ln{0.79}$

$t = \frac{-\ln{0.79}}{0.00012160476}$

$t = 1938.43$

Rounding to the nearest year.

The age of the spear head is of 1938 yers.

8 0

3 years ago