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3 years ago

The distance required to stop a car varies

Mathematics

1 answer:

VMariaS [17]3 years ago

6 0

Answer:

400

Step-by-step explanation:

250 divide by 60 equals 4.16666666667 then you multiply by 96 witch gives you 400

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What are the solutions of the equation (2x + 3)2 + 8(2x + 3) + 11 = 0

Tom [10]

Answer:

$x=\frac{-7-\sqrt{5}}{2}$ or $x=\frac{-7+ \sqrt{5}}{2}$

Step-by-step explanation:

The given equation is

$(2x+3)^2+8(2x+3)+11=0$

Let us treat this as a quadratic equation in $(2x+3)$ .

where $a=1,b=8,c=11$

The solution is given by the quadratic formula;

$(2x+3)=\frac{-b\pm \sqrt{b^2-4ac} }{2a}$

We substitute these values into the formula to obtain;

$(2x+3)=\frac{-8\pm \sqrt{8^2-4(1)(11)} }{2(1)}$

$(2x+3)=\frac{-8\pm \sqrt{64-44} }{2}$

$(2x+3)=\frac{-8\pm \sqrt{20} }{2}$

$(2x+3)=\frac{-8\pm2\sqrt{5} }{2}$

$(2x+3)=-4\pm \sqrt{5}$

$(2x+3)=-4-\sqrt{5}$ or $(2x+3)=-4+ \sqrt{5}$

$2x=-3-4-\sqrt{5}$ or $2x=-3-4+ \sqrt{5}$

$2x=-7-\sqrt{5}$ or $2x=-7+ \sqrt{5}$

$x=\frac{-7-\sqrt{5}}{2}$ or $x=\frac{-7+ \sqrt{5}}{2}$

5 0

3 years ago

4. To draw graph of 4x+ 5y = 19, Find y when a=1 (A) 4 (B 3 62 D2-3

babymother [125]

There’s no a in the the equation

6 0

3 years ago

GEOMETRY NEED HELP AS SOON AS POSSIBLE

Aneli [31]

Answer:

BAC=15

Step-by-step explanation:

angle BOA= 180-30= 150

triangle BAO is isosceles because it has two equal sides, radii of a circumference so the angles ABO=BAO=(180-150)/2=15

4 0

3 years ago

Read 2 more answers

Solve the equation below. SHOW ALL WORK!!! −3(y + 2) = 21

Maurinko [17]

Answer:

y=-9

Step-by-step explanation:

-3(y+2)=21

1st Open parenthesis

-3y-6=21

+6 +6

-3y=27

/-3 /-3

y=-9

6 0

3 years ago

If tan theta =12/5 and cos theta < 0, what is sin theta ?

xenn [34]

If tan theta =12/5 and cos theta < 0, then sin theta is -12/13. The correct answer between all the choices given is the last choice or letter E. I am hoping that this answer has satisfied your query about and it will be able to help you.

8 0

3 years ago