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3 years ago

What are the values of the variables

Mathematics

2 answers:

White raven [17]3 years ago

8 0

Answer:

Step-by-step explanation:

we know that according to the isosceles triangle theorem, that the angles of the triangle are 90, 2x+3, 2x+3

from the triangle angle sum theorem, we know that 4x+6 = 90

solving, we get 4x=84, x=21

kramer3 years ago

8 0

Answer:

isosceles + a right angle, so both angles at the bottom are the same and equal to (2x+3).

so we have 180 degrees = 90 + (2x+3) + (2x+3)

so x = 21

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Alicia uses 7.4 pints of white paint and blue paint to paint her bedroom walls. 2 5 of this amount is white paint, and the rest

aalyn [17]

Answer:

4.9

Step-by-step explanation:

6 0

3 years ago

Elisa's mom teaches at preschool. There is 1 teacher for every 12 students at the preschool. There are 276 students at the presc

Pavlova-9 [17]

12 students/1 teacher = 276 students/x teachers

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12 x = 276

divide by 12

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8 0

3 years ago

There are 10 marbles in a bag. Four are blue, 3 are black and 2 white and 1 red. If the marbles are not replaced once they are d

stich3 [128]

<u>Given</u>:

Given that there are 10 marbles in a bag. 4 are blue, 3 are black, 2 are white and 1 is red.

The marbles are selected by not replacing the drawn ones.

We need to the probability of selected a black marble and then a white marble without replacement.

<u>Probability</u>:

Let B denote the black marble.

Let W denote the white marble.

The probability of selecting a black marble is $P(B)=\frac{3}{10}$

The probability of selecting a white marble without replacement is $P(W)=\frac{2}{9}$

The probability of selecting a black marble and then a white marble without replacement is given by

$P(B \ and \ W)=P(B) \cdot P(W)$

Substituting the values, we get;

$P(B \ and \ W)=\frac{3}{10} \cdot \frac{2}{9}$

$P(B \ and \ W)=\frac{6}{90}$

$P(B \ and \ W)=\frac{1}{15}$

Thus, the probability of selecting a black marble and then a white marble without replacement is $\frac{1}{15}$

4 0

3 years ago

ipn [44]

Answer:

my fault pimp i aint know the answer

Step-by-step explanation:

my fault pimp i aint know the answer

4 0

3 years ago

About Integral-Volume of a Sphere. Could you help me,please?

hjlf

Answer:

check the answer

Step-by-step explanation:

find the answer in the attached file

5 0

3 years ago