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3 years ago

Please answer this for me really struggling thanks

Mathematics

1 answer:

Bas_tet [7]3 years ago

5 0

Answer:

Just agree on having ice cream

Step-by-step explanation:

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Box A contains only 20-cent coins and Box B contains only 50-cent coins. The number of coins in Box A is twice the number of coi

Sveta_85 [38]

Answer: There should be 16, 20 cent coins

Step-by-step explanation:

First we have to do 1.60 x 2 which equals 3.2

Then we divided by 0.20 because the equals the 20 cent coins

We get 16

We can check our work by 0.20 x 16 and that gives us 3.2

I hope this helps!

3 0

2 years ago

Find X, Angle bisector

irinina [24]

x = 7

∠ABD = ∠CBD = 20 ( BD bisects ∠ABC )

solve either 3x - 1 = 20 or 34 - 2x = 20

3x - 1 = 20 ( add 1 to both sides and divide by 3 )

3x = 21 ⇒ x = 7

34 - 2x = 20 ( subtract 34 from both sides and divide by - 2 )

- 2x = - 14 ⇒ x = 7

6 0

3 years ago

Read 2 more answers

The means and mean absolute deviations of the amount of rain that fell each day in a local city, last week and this week, are sh

laila [671]

Given:
Last Week This Week
Mean 3.5 in. 2.7 in.
Mean Absolute Deviation 1.2 in. 0.5 in

If this is what the table looks like, my answer is (C) 0.8/0.5

The difference of the two means to this week’s mean absolute deviation is?

The two means are 3.5 in and 2.7 in. The difference would be 3.5 - 2.7 = 0.8
This weeks' mean absolute deviation is 0.5 in according to the table.

So, 0.8 / 0.5 is the answer.

3 0

3 years ago

Read 2 more answers

Cherry is booking a 3-night stay at a hotel. The rate is $45 per room plus tax.

8_murik_8 [283]

Answer:

The lodging cost of the room is $ 41.28

Step-by-step explanation:

Given as :

The rate of room including taxes = $ 45

The state tax = 6 %

The city tax = 2 %

The municipal tax = 1 %

So, The total tax = 6 % + 2 % + 1 % = 9 %

Let The lodging cost = $ x

So, According to question

x + 9 % of x = $ 45

Or, x + 0.09 × x = 45

Or, 1.09 × x = 45

∴ x = $\frac{45}{1.09}$ = $ 41.28

Hence The lodging cost of the room is $ 41.28 Answer

6 0

3 years ago

A bird species in danger of extinction has a population that is decreasing exponentially (A = A0e^kt). Five years ago, the popul

Natalija [7]

Answer:

It'll take approximately 34 years from today.

Step-by-step explanation:

in order to solve this problem we first need to find the rate of change, "k", to do that we will use the given information where the population was 1400 five years ago and its now 1000. Applying this data to the equation gives us:

$A = A_0*e^{k*t}\\1000 = 1400*e^{5*k}\\1400*e^{5*k} = 1000\\e^{5*k} = \frac{1000}{1400}\\ln(e^{5*k}) = ln(\frac{1000}{1400})\\5*k = ln(1000) - ln(1400) \\k = \frac{ln(1000) - ln(1400)}{5} = -0.06729$

We now know the value for "k", we can estimate how many years it will take for the bird population to dip below 100. We have:

$100 = 1000*e^{-0.06729*t}\\e^{-0.06729*t} = \frac{100}{1000}\\ln(e^{-0.06729*t} = \frac{1}{10}\\-0.06729*t = ln(0.1)\\t = -\frac{ln(0.1)}{0.06729} = 34.22$

It'll take approximately 34 years from today.

8 0

4 years ago