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prisoha [69]
3 years ago
5

Solve by factoring. x^2 - 49 = 0

Mathematics
1 answer:
zvonat [6]3 years ago
4 0
The answer is (x+7)(x-7)
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Please answer this this question is a motion problem:
mr_godi [17]
T1 + t2 = 2h and 30min;
t1 * 600 = t2 * 400 => t2 = (3/2) * t1;

then, t1 +  (3/2) * t1 = 2h and 30min => 2t1 + 3t1 = 5h => 5*t1 = 5h => t1 = 1h => t2 = 1h and 30 min;

The distance is 2 * 1 * 600 = 1200miles;
7 0
3 years ago
Triangle P Q R is shown. The length of P Q is 17, the length of Q R is 15, and the length of P R is 14. Law of cosines: a2 = b2
Maksim231197 [3]

Answer:

P = 57°

Step-by-step explanation:

Given the following :

PQ = 17

QR = 15

PR = 14

Using the cosine formula since the length of the three sides are given:

a2 = b2 + c2 – 2bccos(A)

To find P:

QR^2 = PQ^2 + PR^2 – 2(PQ)(PR)cos(P)

15^2 = 17^2 + 14^2 – 2(17)(14)cos(P)

225 = 289 + 196 - 476 cosP

476*CosP = 485 - 225

476*CosP = 260

CosP = 260/476

CosP = 0.5462184

P = Cos^-1(0.5462184)

P = 56.892029

P = 57°

8 0
3 years ago
(9x−5/2) −(3−2x/3) −(8x−2/4 )=2
Ierofanga [76]
The answer for the equation is 21/5 or 4.2.

8 0
3 years ago
What is the coefficient and constant of 3c + 4
kobusy [5.1K]

Answer:

The coefficient is 3 and the constant is 4 in

relation to the equation mx + c where m is the coefficient of x and c is the constant.

4 0
3 years ago
Read 2 more answers
Please help me with this please
Andrew [12]

Answer:

answer iy in the picture...

5 0
3 years ago
Read 2 more answers
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