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Ivenika [448]
3 years ago
13

Please help me with this, aaaaaa

Mathematics
1 answer:
scoray [572]3 years ago
4 0

Answer:

3

Step-by-step explanation:

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I need help with the equation inserted in the picture.
sergij07 [2.7K]

Answer:

x = 4

-4x+21 => 5

Step-by-step explanation:

The given triangle in the picture is isosceles triangle which means that two sides of the triangle are equal.

So,

Side\ 1: -4x+21\\Side\ 2: -4x+21\\Side\ 3: 6\\Perimeter = 16

Now

Putting all the values in equation for perimeter

Side\ 1+Side\ 2+Side\ 3 = 16\\-4x+21 -4x+21 + 6 =16\\-8x +48 = 16\\-8x = 16-48\\-8x = -32\\\frac{-8x}{-8} = \frac{-32}{-8}\\x = 4

Putting x = 4 in side 1

=-4(4)+21\\= -16+21\\=5

Hence,

x = 4

-4x+21 => 5

4 0
3 years ago
The mean age of five children is 8 years 4 months. When Amina joins, the mean age becomes 8 years 5 months. How old is Amina. Wi
frosja888 [35]

Answer:8 5/12 - 8 3/4

101/12- 35/4 LCM 12 &4 is 12

101- 35/12= 66/12

=5 6/12

=5 1/2 years

Step-by-step explanation:

8 0
3 years ago
Which of the following is equal to 1?<br><br> 9² × 9²<br> 9 9<br> 9^4<br> -------<br> 9^3<br> 9 0
Neko [114]

Answer:

It's 9 9

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which of the following is not equivalent to five quarts
Vadim26 [7]
The following is ?
There’s no following
4 0
3 years ago
Read 2 more answers
Consider the polynomial 2×5 + 4×3 -3×8. ​
liberstina [14]

Answer:

what is the question? if you want to simplify this then you simply use the order of operations. 2*5 is 10. 10+4*3-3*8

10+12-3*8

10+12-24

-2

7 0
3 years ago
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