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3 years ago

6

Help and explain I can't get this wrong

1 answer:

Alexxandr [17]3 years ago

4 0

I'm assuming we're solving for x.

One property of a straight line is that the angles that make a straight line have to add up to 180 degrees.

Given this information, we know that 4x + 5 + 41 = 180
4x + 46 = 180
4x = 134

x = 134/4 = 33.5

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2x^3+2x^2-19x+20=0 find the roots of the polynomial equation

Alenkinab [10]

The answer is x=-4, (3<span>±i)/2</span>

5 0

3 years ago

it takes alden 6 hours to bale all the hay in a field, but his brother, anthony , can do the same job in 7 hours. if they bale a

RSB [31]

It would take three and a half hours because for one person it takes alden 6 hrs while it takes anthony seven split it in half between them and a half because it takes his rother an extra hour to do it by himself .

3 0

4 years ago

After dinner 1-3 of the corn bread is left suppose 2 friends want to share it equally what fraction names how much of the whole

Ad libitum [116K]

Answer:

Each friend will get $\frac{1}{18}$ of whole pan of corn bread

Step-by-step explanation:

As given,

Corn bread left = $\frac{1}{3}$

Total number of friends = 2

So the left bread will divide into 2 parts

So, each person will get = $\frac{1}{2}$ ( $\frac{1}{3}$ ) = $\frac{1}{6}$ of the left bread

Now,

Left bread = $\frac{1}{3}$ of whole bread

And

Each person get = $\frac{1}{6}$ of the left bread

= $\frac{1}{6}$ × $\frac{1}{3}$ of whole bread

= $\frac{1}{18}$ of whole bread

∴ we get

Each friend will get $\frac{1}{18}$ of whole pan of corn bread

8 0

3 years ago

A golfer hits a ball from a starting elevation of 2 feet with a velocity of 70 feet per second down to a green with an elevation

ikadub [295]

Answer:

4.50 s

Step-by-step explanation:

The motion of the ball is represented by the following equation:

$h(t) = 2+70t-16t^2$ (1)

where

h(t) is the elevation at time t

2 ft is the initial elevation at t = 0

+70 ft/s is the initial vertical velocity

$-32 ft/s^2$ is the acceleration due to gravity

The green is located at an elevation of -7 feet, so the ball lands on the green when

h(t) = -7

Substituting into (1)

$-7=2+70t-16t^2$

And re-arranging we get

$16t^2-70t-9=0$

This is a second-order equation in the form

$at^2+bt+c=0$

which has solutions

$t_{1,2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$ (2)

Here we have:

a = 16

b = -70

c = -9

Substituting into (2) we find the solutions:

$t_{1,2}=\frac{70\pm \sqrt{(-70)^2-4(16)(-9)}}{2(16)}$

The two solutions are:

t = 4.50 s

t = -0.125 s

The second solution is negative, and since negative time has no physical meaning, the only correct solution is

t = 4.50 s

5 0

3 years ago

Leftmost digit of two numbers are 8 and 3 which is greater

anastassius [24]

8. 8 is greater than 3 and is all the way to theeft. if it was to the right, you'd need more info

6 0

3 years ago