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m_a_m_a [10]
3 years ago
11

Is a acute triangle a right triangle

Mathematics
2 answers:
musickatia [10]3 years ago
5 0
No an acute triangle is a triangle that has all angles less than 90 degrees a right triangle is a triangle with one of the angles being a right angle
hoa [83]3 years ago
3 0
No, because it has a measure under 90 degrees
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Scores on a standardized test are normally distributed with a mean of 480 and a standard deviation of 90. What proportion of the
Aloiza [94]

Answer:

Step-by-step explanation:

Since the scores on the standardized test are approximately normally distributed, we would apply the formula for normal distribution which is expressed as

z = (x - µ)/σ

Where

x = test scores.

µ = mean score

σ = standard deviation

From the information given,

µ = 480

σ = 90

1) The proportion of scores above 700 is expressed as

P(x > 700) = 1 - P(x ≤ 700)

For x = 700,

z = (700 - 480)/90 = 2.44

Looking at the normal distribution table, the probability corresponding to the z score is 0.99

P(x > 700) = 1 - 0.99 = 0.01

the proportion of scores above 700 is 0.01

2) For the 25 percentile, z = - 0.67. Therefore,

- 0.67 = (x - 480)/90

90 × - 0.67 = x - 480

- 60.3 = x - 480

x = - 60.3 + 480

x = 419.7

3) if Someone’s score is 600, then

z = (600 - 480)/90 = 1.33

From the table, the percentileis

0.91 × 100 = 91%

4) For x = 420,

z = (420 - 480)/90 = - 0.67

The proportion is 0.25

For x = 520,

z = (520 - 480)/90 = 0.44

The proportion is 0.67

The proportion of the score between 420 and 520 is

0.67 - 0.25 = 0.42

7 0
2 years ago
For what values of b, the equation x^2−ax+b=0 has a solution for any value of a? PLEASE I NEED IT SOON!
Rasek [7]
I’m not sure about the wording of the question, but wouldn’t it be all real numbers?
3 0
3 years ago
Read 2 more answers
What is the solution to the system of equations below? y = negative one-fourth x + 2 and 3 y = negative three-fourths x minus 6
Arlecino [84]

Answer:

no solution

Step-by-step explanation:

Suppose the system equations are:

y = (-1/4)x + 2   (1)

3y = (-3/4)x – 6    (2)

If we multiply equation (1) by 3:

3y = (-3/4)x + 6      (1)

3y = (-3/4)x – 6       (2)

then subtract it from equation (2):

0y = 0x – 12

0 = -12

This is not possible, therefore, the system equation has no solution

6 0
2 years ago
Read 2 more answers
A drawer contains 3 tan sweaters and two black sweaters. You randomly choose two sweaters. What is the probability that both swe
sergij07 [2.7K]
A = event that you select a black sweater
P(A) = 2/5 since there are 2 black out of 2+3 = 5 total

After you make a selection, we have the event
B = event that you select another black sweater assuming event A has happened already

P(B) = 1/4 because there's 1 black sweater left out of 5-1 = 4 left over

Multiply the probabilities
P(A and B) = P(A)*P(B)
P(A and B) = (2/5)*(1/4)
P(A and B) = 2/20
P(A and B) = 1/10

The answer as a fraction is 1/10
In decimal form, it is 0.1
As a percent, the answer is 10%
6 0
3 years ago
Find the value of w and then x. Round lengths to the nearest tenth and angle measures to the nearest degree.
VARVARA [1.3K]

Answer

w=7.6

x=43.7

Step-by-step explanation:

To solve for w you can use Sin(x)=\frac{Opposite}{Hypotenuse}  which would basically be Sin(50)=\frac{w}{10} then solve. Multiply the ten on both sides so you have 10*Sin(50)=w and your final answer is 7.6

To solve for x you can also use Sin(x)=\frac{7.6}{11} then just use Inverse of Sin^-1

The answer is x=43.7

4 0
3 years ago
Read 2 more answers
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