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Alecsey [184]
3 years ago
9

What is the value of n? 9x27 2×31-28=n

Mathematics
1 answer:
Shtirlitz [24]3 years ago
4 0
<span>n = 9 * 27 + 2 * 31 - 28
n = 243 + 62 - 28
n = 305 - 28
n = 277

Firstly do the multiplications and divisions, then additions and substractions.

Hope I could help :)</span>
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The figure shown models a roof truss. Based on the markings, is there enough information to prove that ΔACD ≅ ΔBCD?
Daniel [21]

Answer:

C

Step-by-step explanation:

Yes, ACD = BCD by AAS since they have 2 congruent angles & share a side.

3 0
2 years ago
Luiza is jumping on a trampoline. Ht models her distance above the ground (in m) t seconds after she starts
Damm [24]

Answer:

t=2.08 seconds.

Step-by-step explanation:

Well, in this example, H(t)=-0.6cos(2pi/2.5)t+1.5 should be equal to 1.2. If calculated, -0.6cos(0.8pi)t=1.2-1.5 which is equal to -0.6cos(0.8pi)t=-0.3, then cos(0.8pi)t=0.5. The value of cosine in terms of radians when it is equal to 0.5 is pi/3. So, cos(0.8pi)t=cos(pi/3). If simplified, (0.8pi)*t=5pi/3. pi's are cancelled out and t is calculated as 2.08333... If rounded to the nearest hundredth it is 2.08.

4 0
3 years ago
The area of circle B is 121 times greater than the area of circle A. The radius of circle B is 44. What is the radius of circle
xxMikexx [17]
<em>Formula:</em>
\bigg( \dfrac{radius_1}{radius_2} \bigg)^2 =  \dfrac{area_1}{area_2}

<em>Plug in the values:</em>
\bigg( \dfrac{r}{44} \bigg)^2 = \dfrac{1}{121}

<em>Simplify LHS:</em>
\dfrac{r^2}{1936}  = \dfrac{1}{121}

<em>Multiply by 1936 on both sides:</em>
r^2  = \dfrac{1936}{121}&#10;

<em>Simplify RHS:</em>
r^2 = 16

<em>Square root both sides:</em>
r = 4

Answer: The radius is 4 units. (Answer B)
5 0
3 years ago
The frequency (F) and length (L) of a wave are related by the following formula: F x L = 3.0 x 10^10. Consider that the waveleng
Sphinxa [80]
The correct answer: 2.3 x 10^18
7 0
3 years ago
HHEEELPPP me PLEASEE ill mark you brainlyyy
Aleksandr-060686 [28]
Hi The answer is 768
4 0
3 years ago
Read 2 more answers
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