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dolphi86 [110]
3 years ago
10

What is the perimeter of the triangle above.​

Mathematics
1 answer:
Anarel [89]3 years ago
3 0

Answer:

24 cm

Step-by-step explanation:

8^2 + b^2 = 10^2

64 + b^2 = 10

b^2 = -54

b = 6

10 + 8 + 6 = 24

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There are 65 campers at fun camp. only 53 campers brought sleeping bags. how many campers did not bring sleeping bags?
elena-s [515]
So you have to just subtract, 65-53=12 that didn't bring sleeping bags
8 0
3 years ago
The system of equations is given:
Nutka1998 [239]

Answer:

x=-1/85; y=-283/85; z=2/17

Step-by-step explanation:

Using an algebraic method like elimination or substitution would take a lot of steps which could lead to mistake the calculations. In this case, I decided to use the Gaussian elimination. We can express the system in matrix form as follows:

\left[\begin{array}{ccc}2&-4&6\\9&-3&1\\5&0&9\end{array}\right] \left[\begin{array}{ccc}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}14\\10\\1\end{array}\right]

To begin the calculations, we write the system in augmented matrix form and use the Gaussian elimination:

\left[\begin{array}{ccccc}2&-4&6&|&14\\9&-3&1&|&10\\5&0&9&|&1\end{array}\right]

By applying the Gaussian elimination, the final matrix is the following:

\left[\begin{array}{ccccc}1&0&0&|&-1/85\\0&1&0&|&-283/85\\0&0&1&|&2/17\end{array}\right]

In order to verify the results, it´s enough to substitute the calculated values in the original equations to see if the equalities are correct. Here you can see the verification for all of the equations:

2(-1/85)-4(-283/85)+6(2/17)=14\\9(-1/85)-3(-283/85)+1(2/17)=10\\5(-1/85)+9(2/17)=1

6 0
3 years ago
What equation is equivalent to 11 = (15 -6r) + 2r?
OLEGan [10]

Answer:

11 = (15 -6r) + 2r

11= 15-6r+2r

11=15-4r

4=4r

r=1

6 0
3 years ago
what is the value of the expression? 4(6/10−1/5)+0.4 enter your answer, in simplest form, in the box.
MA_775_DIABLO [31]

Answer: 2.0

Step-by-step explanation:

The given expression : 4(\dfrac{6}{10}-\dfrac{1}{5})+0.4

To solve the given expression , we need to follow BODMAS (Bracket→ Of Divide→ Multiplication →Add →Subtract).

According to BODMAS , first we simplified the expression present inside the brackets .

4(\dfrac{6-2(1)}{10})+0.4  [10= LCM[10,5]]

=4(\dfrac{6-2}{10})+0.4

=4(\dfrac{4}{10})+0.4

=(\dfrac{4\times4}{10})+0.4   [Multiply]

=(\dfrac{16}{10})+0.4   [Simplify]

=1.6+0.4=2.0 [Add]

Hence, the value of the expression in the simplified form = 2.0

6 0
4 years ago
38)
STatiana [176]

Answer:

dbcjchdiskcnbcksksnnckdkxnn

3 0
3 years ago
Read 2 more answers
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