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Sliva [168]
2 years ago
9

A group of 7 campers has four hours to hike to a lighthouse and back before sundown. The lighthouse is 28 m high. It is located

12 km from camp. How fast do they have to walk?
Mathematics
1 answer:
VMariaS [17]2 years ago
6 0
I have no idea so sorry
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What values of b satisfy 4(3b + 2)2 = 64?
rodikova [14]
Assuming yo meant
4(3b+2)²=64

divide both sides by 4
(3b+2)²=16
sqrt both sides
remember to take positive and negative roots
3b+2=+/-4
minus 2 both sides
3b=-2+/-4
divide by 3
b=(-2+/-4)/3
b=(-2+4)/3 or (-2-4)/3
b=2/3 or -6/3
b=2/3 or -2


A is answer
7 0
2 years ago
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Evaluate 1/4c + 3d when c = 6 and d = 7
Natalka [10]
Replace the C and D with 6 and 7.

1/4 (6) + 3 (7)

6/4 + 21 

6/4 + 84/4 = 90/4

90/4 = 22.5

Hope this helps!
7 0
2 years ago
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Supervisor: "I am giving you 10 business days to make a 4% improvement on your average quality score. Your current average quali
kobusy [5.1K]

"Then I will need an average quality score of <u>3.28</u>  to meet 85.28 goal."

<u>Step-by-step explanation</u>:

  • current average quality score = 82
  • improvement on average quality score = 4% of 82

⇒ (4/100)\times82

⇒ 82/25

⇒ 3.28

The improved average quality score = 82+3.28 = 85.28

The employee needs an average quality score of 3.28 to meet the goal of 85.28

5 0
2 years ago
The isosceles triangle has a base that measures 14 units. The value of y, the length of each leg, must be equal to 7. between 7
Dvinal [7]
1.The isosceles triangle has sides of length 14, y, y

2. According to the "triangle inequality" :

y+y>14
2y>14
y>14/2=7

(y is greater than 7)

3. Remark, check the figures:

the side lengths cannot be less than (neither equal to 7), because we cannot get a triangle in that case, check picture 2

In picture 1 wee see that the side lengths can be as large as we want. We can erect an altitude, as high as we want. Pick a point on the altitude, and join it to the endpoints of the base, and we get an isosceles triangle with base equal to 14.

4 0
2 years ago
Read 2 more answers
In circle N, KL ≅ ML. Circle N is shown. Line segments N J, N M, N L, and N K are radii. Lines are drawn to connect each point o
Sergeu [11.5K]

Answer:

arc\ JM=132^o

Step-by-step explanation:

The picture of the question in the attached figure

step 1

we know that

arc\ JM+arc\ ML+arc\ LK+arc\ KJ=360^o ----> by complete circle

substitute the given values

(13x+2)^o+(8x-3)^o+(7x+7)^o+(5x+24)^o=360^o

solve for x

(33x+30)^o=360^o\\33x=360-30\\33x=330\\x=10

step 2

Find the measure of arc JM

arc\ JM=(13x+2)^o

substitute the value of x

arc\ JM=(13(10)+2)^o=132^o

8 0
2 years ago
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