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allsm [11]
3 years ago
11

What is the value of x in the quadrilateral shown below? A. 80° B. 70° C. 60°

Mathematics
1 answer:
stiks02 [169]3 years ago
5 0
A quadrilateral has 4 angles that add up to 360 degrees. So, to solve for x:

85+150+55=290
360-290= 70
X= 70 degrees
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(b) Solve and write the solution set<br>for: 3x -8&lt;7 ; XEN<br>​
bekas [8.4K]

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x=5is greater than 7

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6 0
3 years ago
If the diameter of a circle change from 18 cm to 6m how will the circumference change
viktelen [127]

Answer:

it will decrease

Step-by-step explanation:

because 6 is smaller than 18 it will go down (decrease)

7 0
2 years ago
Flve tickets to a carnlval cost $45. How much would seven<br> tickets cost?
Alecsey [184]

Answer:

$63

Step-by-step explanation:

In order to solve this problem, we need to find the unit price, which is the price per 1 ticket in this case. To find this, we need to divide $45 by 5 because each ticket is the same amount: $45 / 5 = $9. So each ticket is $9.

Now, we need to find how much 7 tickets would cost. To do this, multiply the $9 / ticket by 7 tickets: $9 * 7 = $63.

This, 7 tickets would cost $63.

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5 0
2 years ago
Read 2 more answers
A freshly inoculated bacterial culture of Streptococcus contains 100 cells. When the culture is checked 60 minutes later, it is
Luba_88 [7]

Answer:

P(t) = 100e^{0.0251t}

The doubling time is of 27.65 minutes.

Step-by-step explanation:

Exponential equation of growth:

The exponential equation for population growth is given by:

P(t) = P(0)e^{kt}

In which P(0) is the initial value and k is the growth rate.

A freshly inoculated bacterial culture of Streptococcus contains 100 cells.

This means that P(0) = 100. So

P(t) = 100e^{kt}

When the culture is checked 60 minutes later, it is determined that there are 450 cells present.

This means that P(60) = 450, and we use this to find k. So

450 = 100e^{60k}

e^{60k} = 4.5

\ln{e^{60k}} = \ln{4.5}

60k = \ln{4.5}

k = \frac{\ln{4.5}}{60}

k = 0.0251

So

P(t) = 100e^{0.0251t}

Doubling time:

This is t for which P(t) = 2P(0) = 200. So

200 = 100e^{0.0251t}

e^{0.0251t} = 2

\ln{e^{0.0251t}} = \ln{2}

0.0251t = \ln{2}

t = \frac{\ln{2}}{0.0251}

t = 27.65

The doubling time is of 27.65 minutes.

7 0
3 years ago
A student ran a distance of miles each day for 5 days. Then the student ran a distance of 44 miles each day for the next 5 days.
Law Incorporation [45]

Answer:

its 38 3/4

Step-by-step explanation:

d₂ = distance covered each day in the next 5 days From the question, Given: d₁ = 3 miles = 7/2 miles T = 5 Days d₂ = 4 miles = 17/4 miles Substitute these values into equation 1 D = [ (7/2)×5]+ [ (17/4)×5] D = 17.5+21.25 D = 38.75 miles

3 0
2 years ago
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