All categories

3 years ago

Solve by factoring. x2-49 = 0 X=

Mathematics

2 answers:

lina2011 [118]3 years ago

8 0

Answer: Ok so just remember

difference of 2 perfect squares

a^2-b^2=(a-b)(a+b)

(x)^2-(7)^2=(x-7)(x+7)

set to zero

x-7=0

x=7

x+7=0

x=-7

x=-7 or 7

Hope this helps have a awesome night/day❤️✨

Step-by-step explanation:

Archy [21]3 years ago

3 0

24 1/2 or 24.5 is the answer

You might be interested in

Lena starts a spelling test at 12:15 P.M. The test is 35 minutes long. After the spelling test, Lena has art class for 1 hour. W

saul85 [17]

Answer:

1:50 P.M

Step-by-step explanation:

12:15+35 = 12:50

1 hour = 60 minutes

60 + 12:50 = 1:50

8 0

3 years ago

What is the area of this trapezoid?

Pie

Area of a Trapezoid, A = [(a+b)/2] · h

Where,

a and b are the respective bases of the trapezoid

h is the height of the trapezoid

a = 10

b = 7 + 10 + 10 = 24

h = 9

A = [(a+b)/2] · h

A = [(10 + 24)/2] · 9

A = [(34)/2] * 9

A = 17 * 9

A = 153 Units²

6 0

4 years ago

Read 2 more answers

Make a tree diagram and find each probability.

Dafna11 [192]

Answer: a) probability that the game will be canceled= 45%

b) probability there will be a light drizzle and the game will not be canceled=20%

Step-by-step explanation:

Since we have given that

Probability of heavy fog is given by

$P(F)=0.70$

Probability of a light drizzle is given by

$P(D)=0.30$

Probability of getting canceled a softball game due to light drizzle is given by

$P(C\mid D)=0.80$

Probability of getting canceled a softball game due to heavy fog is given by

$P(C\mid F)=0.30$

a. Find the probability that the game will be canceled.

Probability of getting the game be cancelled is given by

$P(C)=P(F)\times P(C\mid F)+P(D)\times P(C\mid D)\\\\P(C)=0.70\times 0.30+0.30\times 0.80\\\\P(C)=0.45\\\\P(C)=45\%$

b. Find the probability there will be a light drizzle and the game will not be canceled.

Probability that there will be a light drizzle and the game will not be canceled is given by

$P(C'\mid D)=1-P(C\mid D)\\\\P(C'\mid D)=1-0.80\\\\P(C'\mid D)=0.20\\\\P(C'\mid D)=20\%$

Hence, a) probability that the game will be canceled= 45%

b) probability there will be a light drizzle and the game will not be canceled=20%

8 0

3 years ago

Help plzzz fast i have to write the inequality

scZoUnD [109]

Hiiiiiiiiiiiiiiiiiiiiiiii 27384839-272737=2727278

4 0

3 years ago

If 3 /5 of a class read 4 or more how man students read three books

bazaltina [42]

Answer:

2/5 or 40% read three books

Step-by-step explanation:

Since 3 out of 5 people read four or more books then the remnaining 2/5 people read three books

6 0

3 years ago