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2 years ago

Everything I need answers please help me my mom said if i don’t finish I cannot go to targert

Mathematics

1 answer:

Contact [7]2 years ago

8 0

Attached solutions. Was not able to see the last two. Send the fraction and I will add them in.

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What are the zeros of the quadratic function f(x) = 6x2 + 12x – 7?

zalisa [80]

we have

$f(x) = 6x^{2} + 12x -7$

To find the zeros equate the function to zero

$6x^{2} + 12x -7=0$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$7= 6x^{2} + 12x$

Factor the leading coefficient

$7= 6(x^{2} + 2x)$

Complete the square. Remember to balance the equation by adding the same constants to each side

$7+6= 6(x^{2} + 2x+1)$

$13= 6(x^{2} + 2x+1)$

Rewrite as perfect squares

$13= 6(x+1)^{2}$

$(13/6)=(x+1)^{2}$

square root both sides

$x+1=(+/-)\sqrt{\frac{13}{6}}$

$x=-1(+/-)\sqrt{\frac{13}{6}}$

$x1=-1+\sqrt{\frac{13}{6}}$

$x2=-1-\sqrt{\frac{13}{6}}$

therefore

the answer is

The zeros of the quadratic function are

$x=-1+\sqrt{\frac{13}{6}}$ and $x=-1-\sqrt{\frac{13}{6}}$

3 0

2 years ago

Read 2 more answers

Given a data set consisting of 33 unique whole number observations, its five-number summary is:

Lemur [1.5K]

Answer:

given a data set of 33 unique whole number observation,its five number sumary is [16, 29, 40 ,54, 67]

Step-by-step explanation:

The p-th percentile in an ordered (from low to high) data set is a value such that p% of the data is less than that value. The quartiles of a data set are the 25th, 50th and 75th percentiles. (The 25th percentile is usually called the first quartile, the 50th percentile is usually called the median, and the 75th percentile is usually called the third quartile.)

The formula for finding the location (or position) of the (approximate) pth percentile in an ordered (from low to high) data set is

L p=(n+1).p/100

For example, in the data set [2,4,6,8,10,12,14,16,18]

the (approximate) 60th percentile is located at position

L 60=(9+1).60/100=6

that is, the sixth data point (the value 12) is at the (approximate) 60th percentile.(Actually, only 55.6% of the data is below a 12.)

3 0

2 years ago

Amanda is placing an order for running shoes and leather boots for her footwear boutique. She needs a total of 48 pairs of shoes

Basile [38]

Constraint 1:

Let the total number of running shoes be = R

Let the total number of leather boots be = L

As the given number of total shoes are 48,

The equations becomes,

R + L = 48............(1)

Constraint 2:

As running shoes are twice the leather boots, equation becomes,

R = 2L..............(2)

Putting the value of R from equation(2) in equation (1)

$2L+ L=48$

$3L=48$

$L=16$

Now putting the value of L in equation(2)

R= 2L

R = $2*16$

R=32

Hence, Amanda needs 16 pairs of leather boots and 32 pairs of running shoes.

4 0

2 years ago

12 catsate 40 pounds of cat food.At this rate, how many pounds of cat food would 48 cats eat?

max2010maxim [7]

The answer is 160, multiply 12 by 4 to get 48 cats. 40 multiplied by 4 = 160.
If that makes since.

Hope this helps

3 0

2 years ago

Solve the triangle. A = 46° a = 33 b = 26

frozen [14]

Using sin rule:
a/sin A =b/sin B=c/sin c
SIN A=sin 46=0.72
THEN:sin B =(0.72*26)/33=0.57
then B= 34°
AS the sum of triangle angles=180
then C=180-(46+34)=100°
then c =(a*sin C)/sin A
sin C=sin 100=0.98
=(33*0.98)*0.72=45

7 0

3 years ago

Read 2 more answers