Ask question

Ask question

All categories

katovenus [111]

3 years ago

13

What are the zeros of the quadratic function f(x) = 8x2 – 16x – 15?

2 answers:

notka56 [123]3 years ago

6 0

The best way to do this is to use the quadratic formula. a=8, b=-16, and c=-15. When you fill all that into the quadratic formula you get roots of x = 2.695582496 and x = -.6955824958. I'm not sure what your choice above are supposed to be...

BaLLatris [955]3 years ago

5 0

The Answer Is A.

What are the zeros of the quadratic function f(x) = 8x2 – 16x – 15?

<span>x = –1 – and x = –1 + </span><span>x = –1 – and x = –1 + </span><span>x = 1 – and x = 1 + </span><span>x = 1 – and x = <span>1 + </span></span>

You might be interested in

A tabletop in the shape of a trapezoid has an area of 5,369 square centimeters. Its longer base measures 131 centimeters, and th

Illusion [34]

Answer:

The height of the trapezoid = 45.5 cm

Step-by-step explanation:

Here, the length of the base = 131 cm

The length of the shorter side = 105 cm

Let us assume the height = h

Also, area of the trapezoid = 5,369 sq. cm

Now, AREA OF THE TRAPEZOID = $\frac{1}{2} \times \textrm{(Sum of parallel sides)} \times h$

$\implies 5,369 = \frac{1}{2} \times (131 + 105) \times h\\\implies h = \frac{5,369 \times 2}{236} = 45.5$

or, h = 45.5 cm

Hence the height of the trapezoid = 45.5 cm

8 0

3 years ago

Helpppppppp againnnnnn

Archy [21]

Answer:

100.40

Step-by-step explanation:

if 6 members has paid, then the remaining 8 will be 8 x 12.55 = 100.4

4 0

4 years ago

Read 2 more answers

1. WHAT DOES IT MEAN TO SOLVE A RIGHT TRIANGLE?

slega [8]

Hello there!

1) Solving a right triangle means finding the values of the unknown {most likely a variable}
2) The picture is for the Similarity in Right Triangles, I couldn't explain it.
How you can use Pythagorean Theorem: The formula for that is (a^2<span> + b^</span>2<span> = c^</span>2<span>). The longest side of a triangle is called the hypotenuse, and the other sides are called legs. You usually use Pythagorean Theorem when you are trying to find an angle of a side. A and B in the formula are the legs and C is the hypotenuse, it makes sense because the hypotenuse is the longest side of the triangle, which means that it has a greater angle than the legs. So say you have a triangle with a leg of 5, a leg of 7, and the hypotenuse is unknown. (If you're a visual person, I also drew it on paint and put it in :P) The formula is a^2 + b^2 = c^2. The ^2 is an exponent, which means that we have to multiply the base by itself that many times. For example, if we had 3^4, we'd have to multiply 3 4 times. (3*3*3*3=81) So 5*5=25 and 7*7=49. It would be better it fill in the formula as you go. So now you have (25+49=c^2). You wouldn't multiply c^2, because we don't know the base yet, it's an unknown, so we keep it at that for a while. So now we just continue with the problem which is basically 25+49 which is 74. (74=c^2) But that's not the answer. We have to find the square root of 74 in order to get the answer because we have to multiply with an exponent, the opposite is square rooting which is what we have to do. (((what sucks is that I reached the max of files to enter for you so your just gonna have to read the rest. sorry))) So the square root of 74 is 8.6. And that's your answer. The legs are 5 and 7, and your hypotenuse is 8.6. But what if you need to find one of the legs. The formula would be a= </span> $\sqrt{c^2-b ^2}$ ( I hope the insert thing works if it doesn't I said a= square root of c^2-b^2)
I hope you can solve that because I have to go to a testing Class Connect, and I don't think I've learned the other questions yet. I'm sorry, and I hope I've helped!!

4 0

4 years ago

The label on the car's antifreeze container claims to protect the car between −30°C and 130°C. To convert Celsius temperature to

Sveta_85 [38]

we know that

$C = \frac{5}{9}(F-32)\\ \\F=\frac{9}{5}C+32$

Step $1$

<u>Find the inequality</u>

we know that

$C = \frac{5}{9}(F-32)$ --------> equation $1$

and

$-30\° < C < 130\°$

substitute the equation $1$ in the inequality

$-30\° < \frac{5}{9}(F-32) < 130\°$

Step $2$

<u>Convert $-30\°C$ to F</u>

substitute in the formula

$F=\frac{9}{5}*(-30)+32\\ \\F= -22\°$

Step $3$

<u>Convert $130\°C$ to F</u>

substitute in the formula

$F=\frac{9}{5}*(130)+32\\ \\F= 266\°$

therefore

$-22\° < F < 266\°$

the answer is the option

B. −30 < 5 over 9 (F − 32) < 130; −22 < F < 266

6 0

3 years ago

Read 2 more answers

Pls help me on this im stuck

Luden [163]

Answer:

44 or B

Step-by-step explanation:

Look at comments above

8 0

3 years ago

Read 2 more answers