2 years ago

The Quadratic Formula 7:Solving Quadratic Equations

Mathematics

1 answer:

Margaret [11]2 years ago

7 0

Answer:

B. 1.14, -0.77

Step-by-step explanation:

As you know the quadratic formula gives you the solution to

ax² + bx + c = 0

as ...

$x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

Here, we have a=8, b=-3, c=-7, so the formula tells us the solution is ...

$x=\dfrac{-(-3)\pm\sqrt{(-3)^2-4(8)(-7)}}{2(8)}=\dfrac{3\pm\sqrt{233}}{16}\\\\x\approx \{-0.7665,1.1415\} \qquad\text{matches choice B}$

You might be interested in

fifteen out of the 60 eighth-graders at sebring junior high are on the track team. what percent of the eight-graders are on the

allsm [11]

Answer:

25%

Step-by-step explanation:

You have 60 total, 30 on the track team would be 50%, but there is only 15 on the track them, you cut the 50% in half again which gives 25%.

8 0

3 years ago

Write the equation of the line graphed below in Slope-Intercept form. State the slope and y-intercept.

Viefleur [7K]

Answer:

Equation: Y = -x + -3

Slope: -x

Y-intercept: -3

8 0

2 years ago

Landen Company uses a single plantwide overhead rate of $100 per direct labor hour (DLH). Landen has two products as follows: ba

KATRIN_1 [288]

Answer:

$5,500

Step-by-step explanation:

Since Landen Company uses a single overhead rate of $100 per direct labor hour, the total amount allocated to the deluxe and basic chairs is given by the sum of the DLH used up for both products multiplied by the overhead rate:

$A =(20+35)*\$100\\A=\$5,500$

The total amount allocated to these products is $5,500.

8 0

2 years ago

What’s the radius of d= 36 ft

beks73 [17]

R= 18
d=r(2)
36=r(2)
36/2=r(2)/2
18=r

7 0

3 years ago

Which expression is equivalent to (4^−3)^−6?

Alex777 [14]

Answer

4^ 18

i hope this is what your looking for

4 0

2 years ago