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tresset_1 [31]
3 years ago
9

What is -5x^2 = -50?

Mathematics
2 answers:
Alexeev081 [22]3 years ago
7 0
Move terms to the left side
5x^2 = -50
5x-(-50)=9
Use the quadratic formula
x= -0 ±√0^2-4*5*50/ 2*5
Simplify
x=0 ± √-1000/10
answer: No real solutions because the discriminant is negative
dybincka [34]3 years ago
3 0

Answer:

x = 3.1622776

Step-by-step explanation:

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Larry was born on June 7, 1962. His little sister was born thirteen years and three days later. When was his sister born?
Viefleur [7K]

Answer:

The answer is B

Step-by-step explanation:

2021 - 1962 =59

59-13=46

2021-46=1975

Then 7+3=10

3 0
3 years ago
I don't know how to answer this question.
laiz [17]

Answer:

- 39/8y

Step-by-step explanation:

First you need to find a common denominator:

There is already a y in both denominators, so you don't have to worry about that. Since only one denominator has an 8, the other needs to have an 8, so you need to multiply the first fraction by 8 → - 4/y * 8 = - 32/8y

From here you can subtract the numerators:

- 32/8y +(- 7/8y) = - 39/8y

Because you are adding a negative to a negative, it makes the number mroe negative


I hope this helps!

3 0
3 years ago
Find the value of x.<br> please help me!!!!!!!!
Zanzabum

Answer:

x = 55° (nearest degree)

Step-by-step explanation:

Trig ratios:

sin(\theta)=\dfrac{O}{H} \ \ \ cos(\theta)=\dfrac{A}{H} \ \ \ tan(\theta)=\dfrac{O}{A} \ \ \

where \theta is the angle, O is the side opposite the angle, A is the side adjacent to the angle, and H is the hypotenuse of a right triangle

Given:

  • \theta=x
  • A = 3.3
  • H = 5.7

\implies cos(x)=\dfrac{3.3}{5.7}

\implies x=\arccos \dfrac{3.3}{5.7}=54.623459...

⇒ x = 55° (nearest degree)

5 0
2 years ago
Read 2 more answers
Kelly can jump rope 555 times in 5 minutes. What is the unit rate?
BARSIC [14]

555 in 5 mins

Number of counts one min =555\5 =111 per min

3 0
3 years ago
Ruguru wants to rent a car for 3 days. The cost, C, in dollars, for the rental is shown in the box, where d
olga nikolaevna [1]

Answer:

A: $15

Step-by-step explanation:

35·3=105

105+25=135

135-115=15

Hoped this helps!

3 0
1 year ago
Read 2 more answers
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