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Nutka1998 [239]
3 years ago
14

Please help! Answers: 15 70 55 105

Mathematics
1 answer:
yulyashka [42]3 years ago
7 0
Equation:
3x + 10 = (180 - (5x - 5) ) \div 2 \\ ... \\ x = 15 \\
3x+10 = 45+10 = 55
The answer is 55 because this is a isosceles triangle.
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-9 +m=20<br> answer asap please!!
grigory [225]

Answer:

29

Step-by-step explanation:

at 9 on both sides to get m alone

-9+m=20

+9. +9

m= 29

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3 years ago
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The diagram shows a vertical tower DC on a horizontal ground ABC.
sasho [114]
The measure of ABD=180°- 54°=26°
and then the measure of ADB= x
and x + 26° + 28°= 180°, sum of anlgle in a triagle property
 it means x= 180°- 26-28=126°
application of sinus law in the triangle

sin 28 / BD = sin 126/ AD = sin 26/ 25 so we can deduce that 

AD= 25sin126 / sin26= 46.12
let 's consider the triangle ADC, so for finding h, we have sin 28 = h / AD
and then h = AD x sin28=21.65

<span>Calculate the height of the tower is 21.65</span>

6 0
3 years ago
A.What is the slope
zhuklara [117]

Answer:

A. 1

B. -1

C. Proportional

D. y=x-1

7 0
3 years ago
A theater sells two types of tickets to their plays, children's tickets and adult tickets. For today's persformance they have so
evablogger [386]
784 adult tickets
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3 0
3 years ago
Consider the differential equationy′′+3y′−10y=0.(a) Find the general solution to this differential equation.(b) Now solve the in
RSB [31]

Answer:

Y= 2e^(5t)

Step-by-step explanation:

Taking Laplace of the given differential equation:

s^2+3s-10=0

s^2+5s-2s-10=0

s(s+5)-2(s+5) =0

(s-2) (s+5) =0

s=2, s=-5

Hence, the general solution will be:

Y=Ae^(-2t)+ Be^(5t)………………………………(D)

Put t = 0 in equation (D)

Y (0) =A+B

2 =A+B……………………………………… (i)

Now take derivative of (D) with respect to "t", we get:

Y=-2Ae^(-2t)+5Be^(5t)   ....................... (E)

Put t = 0 in equation (E) we get:

Y’ (0) = -2A+5B

10  = -2A+5B ……………………………………(ii)

2(i) + (ii) =>

2A+2B=4 .....................(iii)

-2A+5B=10 .................(iv)

Solving (iii) and (iv)

7B=14

B=2

Now put B=2 in (i)

A=2-2

A=0

By putting the values of A and B in equation (D)

Y= 2e^(5t)

6 0
3 years ago
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