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3 years ago

Solve for a.5a−5−15=3a+6+4

Mathematics

1 answer:

taurus [48]3 years ago

5 0

Answer:

Step-by-step explanation:

5a - 5 - 15 = 3a + 6 + 4 combine like terms

5a + (-5 - 15) = 3a + (6 + 4)

5a - 20 = 3a + 10 add 20 to both sides

5a = 3a + 30 subtract 3a from both sides

2a = 30 divide both sides by 2

a = 15

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Who runs the fastest ? (ONLY ANSWER IF YOU KNOW IT BECAUSE CORRECT ONE GETS BRAINLIEST)

Genrish500 [490]

Answer:

Stephanie runs the fastest per second: 14 feet per second

Step-by-step explanation:

To find the fastest speed, you need to see which person runs the most per second:

Stephanie runs 14 feet per second

Brooke runs 589 feet in 44 seconds.

Find the amount of feet per second by dividing:

$\frac{589}{44} =13.4$

Brooke runs about 13.4 feet per second

Will runs 1 mile in 454 seconds.

Convert the miles to feet:

There are 5,280 feet in a mile. If Will runs 5,280 feet in 454 seconds, divide to find how much he runs per second:

$\frac{5280}{454}= 11.6$

Will runs about 11.6 feet per second.

Rob runs 548 feet in a minute.

Convert the minute into seconds. There are 60 seconds in a minute. Divide the feet by the seconds to find how fast he runs per second:

$\frac{548}{60}= 9.1$

Rob runs about 9.1 feet per second.

Stephanie runs 14 feet per second, the fastest time:

| 14 |, 13.4, 11.6, 9.1

Finito.

4 0

3 years ago

X^2=3x+3 using the quadratic formula,show steps

o-na [289]

X²=3x+3
x²-3x-3=0. have to get 0 on right first
identify a,b,c. a is 1, b is -3, c is -3
now plug in to the quadratic formula...

x = -b±√(b²-4*a*c) / 2a

x = -(-3) ± √((-3)²-4*1*(-3)) / (2*1)

x= 3 ± √(9- -12) / 2

x=( 3 ± √21) /2

8 0

3 years ago

Call line that passes through the point x, y with a y intercept of b and a slope of m can be represented by the equation y=mx +

Sergio039 [100]

Answer: (0, -7.2)

Step-by-step explanation:

Substituting into point-slope form, the equation is

$y+6=4(x-0.3)$

The y-intercept is when x=0, so substituting in x=0,

$y+6=4(-0.3)\\\\y+6=-1.2\\\\y=-7.2$

So, the y-intercept is (0, -7.2).

3 0

2 years ago

Angle AOC has what measurement according to the protractor? A. 150° B. 50° C. 30° D. 130°

maxonik [38]

Answer:

∠AOC = 50°

B is correct.

Step-by-step explanation:

In the given figure of protractor measure the ∠AOC

Please find the attachment of protractor.

OA is horizontal line which is base of protractor.

In angle AOC, two legs OA and OC

OA is base of protractor. OC another leg.

Now we see position of leg OC of angle AOC.

∠AOC is acute angle. So, see the number bottom of protractor.

Hence, the measure of ∠AOC is 50°

7 0

3 years ago

Read 2 more answers

a mountain climber needs to descend 1,500 feet. he wants to do it in 4 equal descents . has far should he travel in each descent

zloy xaker [14]

Answer:

375 each descent

Step-by-step explanation:

1500/4 = 375

4 0

3 years ago