All categories

1 year ago

You bought a magazine for $ 5 and four candy bars . You spent a total of $ 11 . How much did each candy bar cost ?

Mathematics

2 answers:

inn [45]1 year ago

5 0

Answer:

$1,5

Step-by-step explanation:

total money spent - cost of magazine = money spent on candy bars

$11 - $5 = $6

money spent on candy bars divided by number of candy bars = price of one candy bar

$6 / 4 = $1,5

lutik1710 [3]1 year ago

4 0

1.50$. Subtracts five from 11 giving you 6 divide by 4 giving you 1.50

You might be interested in

Suppose y varies directly with x write a direct variation equation that relates x and y

gogolik [260]

Answer:

Option D

Y=2.6x

Step-by-step explanation:

When y=10.4 and x=4, these two can be related by the equation

10.4=4x

Making x the subject of the formula then x=10.4/4=2.6

Relating x and y then we have the equation

Y=2.6x

For example, when x is 4 then y=2.6x=2.6(4)=10.4 as given in the question. Therefore, the right option is D

Y=2.6x

6 0

2 years ago

See attached picture

yanalaym [24]

Answer:

$\frac{f(x+h)-f(x)}{h}$ $=2x + h$

Step-by-step explanation:

Given

$f(x)= x^2 + 2$

Required

Determine: $\frac{f(x+h)-f(x)}{h}$

First, we calculate f(x + h)

$f(x)= x^2 + 2$

$f(x+h) = (x+h)^2+2$

$f(x+h) = x^2+2xh+h^2+2$

So, we have:

$\frac{f(x+h)-f(x)}{h}$ $= \frac{x^2 + 2xh + h^2 + 2 - x^2 - 2}{h}$

$\frac{f(x+h)-f(x)}{h}$ $= \frac{x^2 - x^2+ 2xh + h^2 + 2 - 2}{h}$

$\frac{f(x+h)-f(x)}{h}$ $= \frac{2xh + h^2}{h}$

$\frac{f(x+h)-f(x)}{h}$ $=2x + h$

8 0

2 years ago

Mattie uses the discriminant to determine the number of zeros the quadratic equation 0 = 3x2 – 7x + 4 has. Which best describes

Eduardwww [97]

For $ax^2+bx+c=0$ the discriminant is $b^2-4ac$

there are 3 basic cases of what happens for different discriminants
1. if the discriminant is less than 0, then there are no real zeroes
2. if the discriminant is 0, then it has 1 zero
3. if the discriminant is greater than 0, it has 2 zeroes

so given
$0=3x^2-7x+4$
a=3,b=-7,c=4
thus the discriminant is $(-7)^2-4(3)(4)=49-48=1$
the discriminant is 1. 1 is positive, thus the equation has 2 zeroes because the discriminant is greater than 0

the answer is the equation has two zeroes because the discriminant is greater than 0

8 0

2 years ago

Read 2 more answers

The travel-to-work time for residents in Ventura County is unknown. Assume the population variance is 39. How large should a sam

katen-ka-za [31]

Answer:

A sample size of 128 is needed.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So: