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Shalnov [3]
2 years ago
14

Solve -5x2 - 20x + 35 = 30 by completing the square.

Mathematics
1 answer:
Semenov [28]2 years ago
5 0

Answer:

x=−2−√5 or x=−2+√5

Step-by-step explanation:

-5x2 - 20x + 35 = 30

Answer = x=−2−√5 or x=−2+√5

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Question 2 Multiple Choice Worth 1 points)
umka21 [38]

Answer:

-1 or 4

Step-by-step explanation:

f(x) = g(x)

-x^2 + 4x + 12=x + 8

-x^2+3x+4=0

(x+1)(x-4)=0

x=-1,x=4

4 0
3 years ago
Candice drives a total of 48 miles each day to work and get back home. She works five days a week. Her car gets 21 miles per gal
slega [8]

Answer:

Total gallon of fuel used = 11.428 gallons

Step-by-step explanation:

Given -

The total distance travelled by car in one gallon of gas = 21 miles

Total distance travelled each day = 48 miles

Number of days days in a week in which Candice drive is 5 days

Total miles travelled per week = 48*5 = 240 miles

Total gallon of fuel used = \frac{240}{21} = 11.428 gallons

5 0
2 years ago
2^5 + 10=?????????????
Hoochie [10]

Answer:

Answer is 42

Step-by-step explanation:

2^5 + 10

2*2*2*2*2 + 10

32 + 10

42

7 0
2 years ago
Read 2 more answers
Solve the triangle, AMDM
krok68 [10]

Answer:

B

Step-by-step explanation:

You are given two sides and the included angle, so you need to use the law of cosines.

c² = a² + b² - 2ab cos C

c² = 12² + 13² - 2(12)(13)cos 134°

c² = 313 - 312(-0.6947)

c² = 529.733

c = 23.016

Now use the law of sines.

c/sin C = a/sin A

23.016/sin 134° = 12/sin A

sin A = 12 × sin 134° / 23.016

sin A = 0.37504

A = 22.03°

B = 180° - 134° - 22.03°

B = 23.97°

m<A = 22°; m<B = 24°; c = 23 km

Answer: B

6 0
2 years ago
If I multiply the numbers of the last three pages of the book, I get the product of 23,639,616. How many pages does the book hav
zepelin [54]

Answer:

286,287,288

Step-by-step explanation:

(x)(x+1)(x+2)=23639616

x^3+3x^2+2x=23639616

After solving the equations, you should get the answers.

8 0
3 years ago
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