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3 years ago

-8х4 is equivalent to?oooo

Mathematics

1 answer:

IceJOKER [234]3 years ago

3 0

Answer:

Step-by-step explanation:

Its equivalent to -16×2,

-4×8

16×-2

4×4×-2

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Solve the equation using the quadratic formula. X^2-9x+3=0

Nesterboy [21]

Answer:

The answer is x= $\frac{9+\sqrt{69}}{2}$ , x= $\frac{9-\sqrt{69}}{2}$

Step-by-step explanation:

x^2=a

-9x=b

3=c

Plug into formula.

Equation: $\frac{9+-\sqrt{(-9)^2-4(1)(3)}}{2}$

Simplify the equation.

Equation: $\frac{9+-\sqrt{81-12}}{2}$

Subtract 81 and 12.

Equation: $\frac{9+-\sqrt{69}}{2}$

Spit into two equations

Equation 1: $\frac{9+\sqrt{69}}{2}$

Equation 2: $\frac{9-\sqrt{69}}{2}$

Hope this helps!

8 0

3 years ago

You answer should say: Car _ by __ km/hr (Use care in answering!)

Lina20 [59]

Answer:

Car B by 20km/hr

Step-by-step explanation:

well, we first calculate the speeds of both cars. there is an allocated dot along the 6 hour mark for the line graph of both cars. hence, using a time of 6 hours, we use their respective distances to produce an answer. car a has travelled 360 km while car v has travelled 480 km.

hence:

speed of car b = 480/6 = 80

speed of car a = 360/6 = 60

8 0

4 years ago

Last year, the school library had a total of x books. Over the summer, the library acquired another 36 books and now has a total

zhenek [66]

Answer:

the last year the eschool has 2248 books

Step-by-step explanation:

2284-36=2248

6 0