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Vladimir79 [104]
3 years ago
7

Katrina must take five exams in a math class. If her scores on the first four exams are 71, 69, 85, and 83, what score does she

need on the fifth exam for her overall mean to be at least 78?
Mathematics
1 answer:
vovikov84 [41]3 years ago
4 0

Answer:

The answer would be a 70

Step-by-step explanation:

If her scores on the first four exams are 71, 69, 85, and 83, what score does she need on the fifth exam for her overall mean to be. a. at least 70

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Alex787 [66]

40×4×4=640

b=20 h=4

using formula:

1/2×base×height

1/2×20×4=40

its says scale by factor 4:

b=80 h=16

using formula:

1/2×base×height

1/2×80×16=640

answer------>>>>640cm^2

8 0
3 years ago
A cube with a volume of 64 cubic meters is scaled by a factor of 5. What is the volume of the cube.
RSB [31]

Answer:

Volume of cube = 64 m^3

Let the sides of cube = x

So volume = x^3 = 64

It's length is scaled up by a factor of 5.

Each side of the cube will become = 5x

New volume = (5x)^3 = 125 x^3 = 125×64 = 8000 m^3

New volume is 8000 m^3.

Step-by-step explanation:

7 0
4 years ago
Write 35.2 in a word form
Brilliant_brown [7]
35.2 in word form is: Thirty Five and 2 Tenths.
HOPE I HELPED!!!
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7 0
4 years ago
Read 2 more answers
Can someone help me out with some math in the comments please?
koban [17]
What?? sure i think !!
4 0
3 years ago
Find the value of x and the measure
BabaBlast [244]

Answer:

39°

Step-by-step explanation:

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36 + x + 15 =90

51 + x = 90

x = 39°

8 0
3 years ago
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