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nika2105 [10]
2 years ago
14

Hi can I have help please tysm!

Mathematics
1 answer:
Tems11 [23]2 years ago
8 0

Step-by-step explanation:

7 + 21 \\  \\  = 7(1 + 3) \\  \\ is \: the \: answer

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A sample of n = 5 scores has a mean of m = 8. one new score is added to the sample and the new mean is calculated to be m = 9. w
Yuri [45]
If the 5 scores have a mean of 8, then their total sum would be 8*5 = 40

Now if one score if added (let's call this score x), there are 6 scores and the mean changes to 9, thus:
(40 + x)/6 = 9
40 + x = 54
x = 14
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3 years ago
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What is the place value of the number 8 in the number 814,295
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The place value is a hundred thousand, as there are 5 digits following the eight.
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Find 4 consecutive even integers whose sum is 156?
snow_tiger [21]
X+(x+1)+(x+2)+(x+3)=156
4x+6=156
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If x=37 you get 37+38+39+40=154 and if x=38 you get 38+39+40+41=158[/tex]
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3 years ago
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One angle of a triangle has a measure of 36°. The measure of the third angle is 28° less than 3 times the measure of the second
Alex_Xolod [135]

Answer:

  1. Define your variable and write your equation:  36 + b + (3b-28) = 180°.
  2. measure of the second angle: 43°.
  3. measure of the third angle: 101°

Step-by-step explanation:

a = 36

c = 3b - 28

a + b + c = 180°

a = measure of the first angle

b = measure of the second angle

c = measure of the third angle

then:

1)  36 + b + (3b-28) = 180   ⇒ )Define your variable. Write your equation and solve)

b + 3b + 36 - 28 = 180

4b + 8 = 180

4b = 180 - 8

4b = 172

b = 172/4

2)   b = 43°        ⇒   measure of the second angle

c = 3b - 28

c = 3*43 - 28

c = 129 - 28

3) c = 101°      ⇒   measure of the third angle

Check:

36° + 43° + 101° = 180°

8 0
3 years ago
A square has a perimeter of 28 ft. What is the length of each side? and it is in ft
Virty [35]

Answer: 7 feet

Step-by-step explanation:

Since all 4 sides of a square are equal, you do 28 / 4 = 7 feet, which is the answer.

7 0
3 years ago
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