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Vladimir [108]
3 years ago
7

There are five tests in a grading period. A student received grades of 98, 80, and 90, 96 on the first four tests. What grade mu

st the student earn on the last test to have a 90 or better average for the grading period?​
Mathematics
1 answer:
inn [45]3 years ago
3 0

Answer:

80

Step-by-step explanation:

The median of the group is 80

If you add all the five numbers up they equal 454 divide by 5 the answer would be 90.8

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The temperature dropped from 80°F to 70°F. what is the percent drop in temperature?
sergij07 [2.7K]

The temparature drop is 10 degress


4 0
2 years ago
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I need help with this as well
Zina [86]
19. 4/6 or 2/3 (lowest term) or 2:3 in ratio
20. 2/3 or 2:3 in ratio
21. 5/12 or 5:12 in ratio
22. 14
    To get geometric mean, multiply the numbers then get the square root of the product (if there are two numbers), cube root (if there are three numbers), and so on. In this case, 7*28 = 196; √196 = 14
23. 10 ft : 2.5 ft.
    Convert the values so that it will be similar. In this case, 30 inches is converted to ft.
24. 24 is the Perimeter of ABCDE.
    ABCDE and FGHJK are similar shapes. Similar shapes have proportional measurements.

Now compute for the sides of ABCDE.
AB = 4; BC = ?; CD = ?; DE = ?; EA = ?
AB + BC + CD + DE + EA
4 + 4 + 5 + 6 + 5 = 24

Find BC:
AB/BC = FG/GH
   4/BC = 8/8 
    8BC = 32
      BC = 4

Find CD:
BC/CD = GH/HJ
   4/CD = 8/10
    8CD = 40
      CD = 5

Find DE:
CD/DE = HJ/JK
   5/DE = 10/12
  10DE = 60
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Find EA
DE/EA = JK/KF
   6/EA = 12/10
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3 0
3 years ago
In the equation above k is a constant if y = 2 when x= 5 what is the value of x when y= 5
Tresset [83]

The value f x when y= 5 is 2

<h3>Variations </h3>

Let the given equation be y = k/x

where k is the constant

if y = 2 when x= 5, then;

k = xy

k= 2(5)

k = 10

In order to determine the value of x when y = 5

x = k/y

x = 10/5

x = 2

Hence the value f x when y= 5 is 2

Learn more on variation here: brainly.com/question/6499629

#SPJ1

6 0
2 years ago
Help!!!
WITCHER [35]

Answer: A. . Reflect triangle ABC across the x-axis, followed by a translation

5 units left.

Step-by-step explanation:

4 0
3 years ago
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David determine 80% of 10% he got 80 what he do wrong
lutik1710 [3]
80% of 10% = 0.8 x 10% = 8% 
3 0
3 years ago
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