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3 years ago

What are the zeros of the quadratic function f(x)=8x^2-16x-15

Mathematics

1 answer:

Marina86 [1]3 years ago

8 0

$(4 + \sqrt{46} ) \div 4$
$(4 - \sqrt{46} ) \div 4$

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What is the volume of a box 24 1/4 inches long 18 inches wide and 24 inches tall

olga55 [171]

Answer= 10,476 in3 I used calculator

6 0

4 years ago

Find the value of the variable.

ICE Princess25 [194]

Answer:

$\large\boxed{x=3\sqrt5}$

Step-by-step explanation:

Look at the picture.

ΔABC and ΔDBA are similar (AA). Therefore the sides are in proportion:

$\dfrac{AB}{BC}=\dfrac{BD}{AB}$

We have

$AB=x,\ BC=5+4=9,\ BD=5$

Substitute:

$\dfrac{x}{9}=\dfrac{5}{x}$ cross multiply

$x^2=(9)(5)\to x=\sqrt{(9)(5)}\\\\x=\sqrt9\cdot\sqrt5\\\\x=3\sqrt5$

3 0

3 years ago

BRAINLIEST if -x = x -6 then x = A. -6 B. -3 C. 0 D. 3 explain please

Paul [167]

Answer:

D or 3

Step-by-step explanation:

The equation you are saying is

-x = x-6

If you move both x's to one side, you get

-2x = -6

From this, you can simplify by dividing by -2

x=3, or D.

Hope this helped!

5 0

4 years ago

A rational number equivalent to 7/8 is

MrMuchimi

Answer:

0.875

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

18. The table shows the amount of money in a savings account after several weeks

Tcecarenko [31]

Answer:

a. Arithmetic

b. $a_{n} = a_{n-1} + 15$

c. $a_{n} = 15n + 125$

Step-by-step explanation:

A sequence is arithmetic when the difference between one term and the next is a constant. On the other hand, a sequence is geometric when the next term is found by multiplying the previous by a constant.

In this case, the next term of the sequence can be found by adding $15. Therefore, the sequence is ARITHMETIC ✔️

The recursive formula will be the following: $a_{n} = a_{n-1} + 15$

The explicit formula is the following: $a_{n} = 15n + 125$

7 0

4 years ago