All categories

2 years ago

Am I right? I want to know if I am right

Mathematics

2 answers:

german2 years ago

8 0

Answer:

B $13

Step-by-step explanation:

Julie has 16.73 That is approximately 17 dollars

She buys a purse that is 4.12. That is approximately 4 dollars

17 -4 = 13

She will have approximately 13 dollars left

Varvara68 [4.7K]2 years ago

5 0

No the answer to your question is B $13

You might be interested in

PLs help 50 PTS!!!!! PLEASE ILL GIVE BRAINLIEST!!!!!

Nookie1986 [14]

Answer:

$\large\boxed{y=\dfrac{1}{4}x^2-x-4}$

Step-by-step explanation:

The equation of a parabola in vertex form:

$y=a(x-h)^2+k$

(h, k) - vertex

The focus is

$\left(h,\ k+\dfrac{1}{4a}\right)$

We have the vertex (2, -5) and the focus (2, -4).

Calculate the value of a using $k+\dfrac{1}{4a}$

k = -5

$-5+\dfrac{1}{4a}=-4$ add 5 to both sides

$\dfrac{1}{4a}=1$ multiply both sides by 4

$4\!\!\!\!\diagup^1\cdot\dfrac{1}{4\!\!\!\!\diagup_1a}=4$

$\dfrac{1}{a}=4\to a=\dfrac{1}{4}$

Substitute

$a=\dfrac{1}{4},\ h=2,\ k=-5$

to the vertex form of an equation of a parabola:

$y=\dfrac{1}{4}(x-2)^2-5$

The standard form:

$y=ax^2+bx+c$

Convert using

$(a-b)^2=a^2-2ab+b^2$

$y=\dfrac{1}{4}(x^2-2(x)(2)+2^2)-5\\\\y=\dfrac{1}{4}(x^2-4x+4)-5$

use the distributive property: a(b+c)=ab+ac

$y=\left(\dfrac{1}{4}\right)(x^2)+\left(\dfrac{1}{4}\right)(-4x)+\left(\dfrac{1}{4}\right)(4)-5\\\\y=\dfrac{1}{4}x^2-x+1-5\\\\y=\dfrac{1}{4}x^2-x-4$

3 0

3 years ago

A chicken weighs t lbs. It needs to be cooked for 20 minutes per lb plus an extra 15 minutes. What is the total cooking time? Is

Nostrana [21]

Answer:

Total cooking time = 20t + 15

The expression 15t + 20 is wrong.

Step-by-step explanation:

weight of chicken = t lbs

cook time per lb = 20 minutes

This means that:

1 lb weight requires a cooking time of 20 minutes

1 lb = 20 minutes

∴ t lbs = 20 × t = 20t minutes.

We were also told that each chicken required an extra cooking time of 15 minutes, in addition to the total cooking time due to the weight. Therefore, the total cooking time is calculated thus:

Total cooking time = cooking time due to weight + 15 minutes

Total cooking time = 20t + 15

Hence the expression 15t + 20 is wrong, due to the explanation given above.

8 0

2 years ago

Sam built a circular fenced-in section for some of his animals .the section has a circumference of 55 meters .what is the approx

otez555 [7]

Answer:

243 m²

Step-by-step explanation:

Area of circle:

A = πr²

Circumference of circle:

C = 2πr

Given

C = 55 m

Find r using the second formula:

2πr = 55
2*3.14r = 55
r = 55/6.28
r = 8.8 (rounded)

Find area using the first formula:

A = 3.14*8.8²
A = 243 m² (rounded)

7 0

2 years ago

Mary runs 5 miles in 1.25 hours. How many miles does she run in 1 hour? HELP PLSSS

ICE Princess25 [194]

Answer:

She runs 4 miles in one hour

Step-by-step explanation:

5 divided by 1.25=4

7 0

2 years ago

A fair coin is tossed 6 times. Compute the probability of tossing 6 tails in a row.

Fofino [41]

Answer:

1/6

Step-by-step explanation:

5 0

3 years ago