3 years ago

Someone pls help •n• brainlist

Mathematics

1 answer:

Yanka [14]3 years ago

8 0

Answer:

3x is your answer

Please mark me brainliest

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R=10(a+b) solve for b?

IrinaVladis [17]

Answer:

b=r/10 -a

Step-by-step explanation:

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3 years ago

1 Mr. Ruiz made a map of his ranch on the grid shown below.

tatuchka [14]

Answer: C, 20%

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The equation d=10h represents the number of miles d that Jin travels in h hours . If Jon cuts down the time it takes to travel 3

ahrayia [7]

0.15 is multiplied by 10 = 1.5 hours

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3 years ago

It is estimated that there are 828 motor vehicles in the US it is estimated that there are 828 Motor vehicles in the US for ever

coldgirl [10]

Answer:

314 million

Step-by-step explanation:

Given that :

Number of motor vehicle in the U.S for every 1000 people = 828

If the number of motor vehicle in the United States = 260 million

Then,

Let x = number of people Given number of vehicles = 260,000,000

1000 people = 828 vehicles

x = 260,000,000

828x = (260,000,000 * 1000)

828x = 260,000,000,000

x = 314009661. 835

x = 314 million (approx)

8 0

3 years ago

What is the solution to the quadratic equation 8m^2+7m-15=-7 ?

Aleks04 [339]

Make equal to zero
add7 both sides
8m^2+7m-8=0
quadratic fomrula

if you have
ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}$

8m^2+7m-8=0
a=8
b=7
c=-8

x= $\frac{-7+/- \sqrt{7^{2}-4(8)(-8)} }{2(8)}$
x= $\frac{-7+/- \sqrt{49+256} }{16}$
x= $\frac{-7+/- \sqrt{305} }{16}$

x= $\frac{-7+ \sqrt{305} }{16}$ or x= $\frac{-7- \sqrt{305} }{16}$

aprox
x=-1.52902 or 0.654016

4 0

3 years ago