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SVETLANKA909090 [29]
3 years ago
13

Which expressions are equivalent to the given expression? ​

Mathematics
2 answers:
expeople1 [14]3 years ago
6 0

Answer:

It is the 2nd answer choice 4 check 5

Step-by-step explanation:

Kay [80]3 years ago
5 0

Answer:

The 2nd and 5th expression.

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For number 25 it’s x=4 and for 26 it’s x=7
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3 years ago
An isosceles triangle has an angle that measures 130°. Which other angles could be in that isosceles triangle? Choose all that a
muminat
25 degrees for the other two angles
6 0
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Solve for x and explain
galben [10]
Since the two lines are parallel, the angle labeled 130 is congruent to the angle labeled x+ 136 so you can set them equal to each other

130 = x + 136
subtract 136 from both sides

x = -6
4 0
3 years ago
Read 2 more answers
The sum of two numbers is 9.9, and the sum of the squares of the numbers is 53.21. What are the numbers?
Snezhnost [94]

Answer:

There are two possibilities:

x_{1} = 3.5 and y_{1} = 6.4

x_{2} = 6.4 and y_{2} = 3.5

Step-by-step explanation:

Mathematically speaking, the statement is equivalent to this 2-variable non-linear system:

x + y = 9.9

x^{2} + y^{2} = 53.21

First, x is cleared in the first equation:

x = 9.9 - y

Now, the variable is substituted in the second one:

(9.9-y)^{2} + y^{2} = 53.21

And some algebra is done in order to simplify the expression:

98.01-19.8\cdot y +2\cdot y^{2} = 53.21

2\cdot y^{2} -19.8\cdot y +44.8 = 0

Roots are found by means of the General Equation for Second-Order Polynomials:

y_{1} \approx \frac{32}{5} and y_{2} \approx \frac{7}{2}

There are two different values for x:

y = y_{1}

x_{1} = 9.9-6.4

x_{1} = 3.5

y = y_{2}

x_{2} = 9.9 - 3.5

x_{2} = 6.4

There are two possibilities:

x_{1} = 3.5 and y_{1} = 6.4

x_{2} = 6.4 and y_{2} = 3.5

5 0
3 years ago
The radius of a circle is 7.2 cm. Find the circumference to the nearest tenth.
Lynna [10]

Answer: 45.24

Step-by-step explanation:

6 0
3 years ago
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