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Katena32 [7]
3 years ago
5

What is the base of the triangle when the area is 120ft and the height is 8ft

Mathematics
2 answers:
pochemuha3 years ago
7 0

The base is 30.

Hopefully I got this correct, not 100%

Strike441 [17]3 years ago
3 0

Answer: 30 ft

Step-by-step explanation:

Area of a triangle= (bh)/2

* multiply both sides by 2

2A=bh

*divide by h

(2A)/h=b

*substitute values

(2x120)/8=b

240/8=30

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If a 1% level of significance is used to test a null hypothesis, there is a probability of __________ of rejecting the null hypo
USPshnik [31]

Answer:

If a 1% level of significance is used to test a null hypothesis, there is a probability of ____ less than 1%______ of rejecting the null hypothesis when it is true

Step-by-step explanation:

Given that a hypothesis testing is done.

Level of significance used is 1%

i.e. alpha = 1%

When we do hypothesis test, we find out test statistic Z or t suitable for the test and find p value

If p value is < 1% we reject null hypothesis otherwise we accept null hypothesis.

So p value can be atmost 1% only for accepting null hypothesis.

So the answer is 1%

If a 1% level of significance is used to test a null hypothesis, there is a probability of ____less than 1%______ of rejecting the null hypothesis when it is true.

7 0
3 years ago
Brainliest to right answer!<br><br> 3/7r + ⅝s when r = 14 and s = 8.
yanalaym [24]

Answer:

3/7r + 5/8s = 11

Step-by-step explanation:

r = 14

s = 8

3/7r + 5/8s = ?

3/7 (14) + 5/8 (8) = ?

3 x 2 + 5 = ?

6 + 5 = 11

4 0
2 years ago
Solve for b.<br> 3-2(b-2)=2-7b3−2(b−2)=2−7b
lyudmila [28]

Step-by-step explanation:

3 - 2(b - 2) = 2 - 7b

To solve this first distribute -2 to (b - 2)

3 + (-2b + (-2) x -2) = 2 - 7b

when we simplify this it becomes:

3 + (-2b + 4) = 2 - 7b

We take (-2b + 4) out of the parenthesis:

3 - 2b + 4 = 2 - 7b

Now simplify again.

7 - 2b = 2 - 7b

Now send all the b's to one side and constants on the other.

7 - 2 = -7b +2b

5 = 5b

b = 1

3 0
2 years ago
Write an equation and solve for x
pashok25 [27]
X would equal 53° since a triangle has to equal 180°, 65 + 62 = 127, 180-127=53°
3 0
2 years ago
The arithmetic sequence a; is defined by the formula:
Morgarella [4.7K]

Answer:

The sum of the first 650 terms of the given arithmetic sequence is 2,322,775

Step-by-step explanation:

The first term here is 4

while the nth term would be ai = a(i-1) + 11

Kindly note that i and 1 are subscript of a

Mathematically, the sum of n terms of an arithmetic sequence can be calculated using the formula

Sn = n/2[2a + (n-1)d)

Here, our n is 650, a is 4, d is the difference between two successive terms which is 11.

Plugging these values, we have

Sn = (650/2) (2(4) + (650-1)11)

Sn = 325(8 + 7,139)

Sn = 325(7,147)

Sn = 2,322,775

6 0
3 years ago
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