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RSB [31]
3 years ago
10

Evaluate the expression when c = 5 and d = 8 d + 6c

Mathematics
1 answer:
solmaris [256]3 years ago
5 0

Answer:

38

Step-by-step explanation:

6 times 5 =30

d=8

30+8-38

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Find the area of the shaded regions round the hundredth if needed.
inn [45]
1. Find the area of the circle. You know the radius = 10 in. Use
a = \pi {r }^{2}
2. Find the area of the (I'm assuming) equilateral triangle. Use the 30-60-90 rule to determine the length of half one of the edges, since you already know the hypotenuse of the 30-60-90 triangle. Multiply that value by 2 to get the length of one side. Then use
a = \frac{ \sqrt{3} }{4}  {l}^{2}
to find the area, where l = length of one side.

3. Subtract the area of the equilateral triangle from the area of the circle to find the area of the shaded region.

Hope this helps. Let me know if you're confused!
7 0
4 years ago
Select all the correct answers.
Andrews [41]

Answer:

Option A, Option D and Option E are correct options.

Step-by-step explanation:

We need to find solutions of the inequality: 2x^2-1>6x

We will check the options and see, which options satisfy the inequality.

Option A

x=-4

Put x=-4

2x^2-1>6x\\2(-4)^2-1>6(-4)\\2(16)-1>-24\\32-1>-24\\31>-24\:\:True

So, x=-4 is the solution of inequality.

Option B

x=3

Put x=-3

2x^2-1>6x\\2(3)^2-1>6(3)\\2(9)-1>18\\18-1>18\\17>18\:\:False

So, x=3 is not the solution of inequality.

Option C

x=1

Put x=1

2x^2-1>6x\\2(1)^2-1>6(1)\\2(1)-1>6\\2-1>6\\1>6\:\:False

So, x=1 is not the solution of inequality.

Option D

x=5

Put x=5

2x^2-1>6x\\2(5)^2-1>6(5)\\2(25)-1>30\\50-1>30\\49>30\:\:True

So, x=5 is the solution of inequality.

Option E

x=-2

Put x=-2

2x^2-1>6x\\2(-2)^2-1>6(-2)\\2(4)-1>-12\\8-1>-12\\7>-12\:\:True

So, x=-2 is the solution of inequality.

So, Option A, Option D and Option E are correct options.

7 0
3 years ago
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Korolek [52]
The average speed of the delivery truck would be 136.5
8 0
4 years ago
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Adam found a bag of money that he split with 22 friends.
olasank [31]

Answer:

x/23

Step-by-step explanation:

The bag of money can be represented by x

Adam is 1 person.

1 + 22 = 23

x is divided by 23

x/23

~ Zoe

6 0
3 years ago
I have to answer this but I’m all types of confused.
Simora [160]

Answer:

What's the question?

Step-by-step explanation:

7 0
3 years ago
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