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sesenic [268]
3 years ago
9

Find the value of x. 3x +7 D 2x + 7 3x 16

Mathematics
2 answers:
Mashcka [7]3 years ago
7 0

Answer:

sum of interior angle of a triangle is 180 degree

so,

3x +7 + 2x+7 +3x+6 = 180

8x + 20 = 180

8x = 180 - 20

8x = 160

x = 160/ 8

x = 20

May it will help you

evablogger [386]3 years ago
5 0

Answer:

x = 20

Step-by-step explanation:

According to angle sum property of a triangle , sum of all the angles in a triangle is equal to 180°.

So,

(3x + 7) + (2x + 7) + (3x + 6) = 180

=  > 8x + 20 = 180

=  > 8x = 180 - 20 = 160

=  > x =  \frac{160}{8}  = 20

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What is the least common multiple of 156 and 321
jekas [21]

Hello  Hdolly81

<u><em>The LCM of 156 and 321 is 16692</em></u>

Backup:

156: 2,2,3,13,

321: 3,107

2 * 2 *  3 * 13 * 107 = 16692

:)

5 0
3 years ago
Suppose that 5 J of work is needed to stretch a spring from its natural length of 30 cm to a length of 39 cm.
vesna_86 [32]

Answer

given,

work = 5 J

spring stretch form 30 cm to 39 cm

W = \dfrac{1}{2}kx^2

x = 0.39 - 0.30 = 0.09 m

5 = \dfrac{1}{2}k\times 0.09^2

k = \dfrac{5\times 2}{0.09^2}

k = 1234.568 N/m

a) work when spring is stretched from  32 cm to 34 cm

x₂= 0.34 -0.30 = 0.04 m

x₁ = 0.32 - 0.30 = 0.02

W = \dfrac{1}{2}k(x_2^2-x_1^2)^2

W = \dfrac{1}{2}\times 1234.568 \times (0.04^2-0.02^2)^2

W = 0.741 J

b) F = k x

  25 = 1234.568 × x

     x = 0.0205 m

     x = 2.05 cm

3 0
3 years ago
Simplify.<br> 3sqrt -64m^15n^3<br><br> -8m^5<br> -8m^5n<br> -4m^5n<br> -4m^5
makkiz [27]

Answer:

-4m^5n

Step-by-step explanation:

∛-64 = -4

\sqrt[3]{m^{15}} =m^5

∛n³ = <em>n</em>

8 0
3 years ago
Read 2 more answers
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hodyreva [135]

Answer: 21 posters or 13 posters, please read the explanation since your wording was confusing.


Step-by-step explanation: Okay if you have two packs of 36 and 16 which is 104, you divide by 4 tacks. You end up getting 21 posters.


If you mean there are only 36 and 16 you get 52 and divide by 4. You end up having 13 posters.


7 0
3 years ago
HELP ILL GIVE BRAINLY (put number whatever is… then give the answer ) THANKSSS
Ulleksa [173]

Answer:

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21)0.40

22)0.6

23)0.80

24)0.70

6 0
3 years ago
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