Ask question

Ask question

All categories

Juli2301 [7.4K]

4 years ago

15

four friends ordered Chinese food for dinner. The Kung Fu chicken cost $11. does sweet and sour pork cost $8 and the Mongolian b

eef cost $13. Do you friends want to split the cost equally. Find the cost per person. Use words and or numbers to show how you determined your answer.

1 answer:

yarga [219]4 years ago

7 0

Step 1 - Add up all the prices , 11 + 13+ 8

Step 2 - find the sum , 11+13+8 equals 32 dollars

Step 3 - divide 32 by 4

( 32 is the total price and 4 is how many people are sharing the food)

The answer is 8 dollars per person

You might be interested in

A coral reef grows 13 m every week. How much does it grow in 8 weeks? Write your answer in millimeters

Anastasy [175]

In 8 weeks the reef grows 13 m, or 104 m.

Converting 104 m into mm:

104 m 1000 mm

--------- * ------------- = 104,000 mm

1 1 m

3 0

3 years ago

Answer all for Brainliest (easy math) 5 questions for 30 points

sweet-ann [11.9K]

1) The caterpillar was already at 4.5 feet so 4.5 will be added. If it crawls upwards 38 of an inch every minute and the amount of minutes is not specified, this will be represented as 38x. That means the answer is C. f(x) = 38x + 4.5

2) Substitute the known values into the equation. There are 7 people at $8.25 a person, which is a total of $57.75 <u>I used 7 because he invites 6 friends, plus himself. </u>He only has $50 on his gift card, so he won't have enough to cover the cost. The answer is A.

3) They start out with 40lbs and recieve 120 more. They have 160lbs in total. If they sell 8lbs a day for 5 days, thats 8*5 or 40lbs total. 160 - 40 = 120lbs left after 5 days. I'd say the answers are A, B, and D.

4) I think the answer would be C because 1,500 is used to find the number of grams of isotope present after t years. The number of grams can't be 1,500. I hope that makes sense because I'm not sure how to explain it.

5) The growth factor is 2 (2x, x being the number of hours). Multiply by 15 because the lab has 15 of them. The answer is B. f(x) = 15 * 2x

I hope this helps you! I'm sorry if I got any of them wrong!

7 0

4 years ago

What are the solutions to the following system?

bija089 [108]

The solutions are $(\sqrt{2},-1) \text { and }(-\sqrt{2},-1)$ .

Solution:

Given equation:

$-2 x^{2}+y=-5$

Add $2 x^{2}$ on both sides.

$-2 x^{2}+y+2 x^{2}=-5+2 x^{2}$

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

$y=-3 x^{2}+5$ (given) -------- (2)

Equate (1) and (2).

$-5+2 x^{2}=-3 x^{2}+5$

Add $3 x^{2}$ on both sides.

$-5+2 x^{2}+3 x^{2}=-3 x^{2}+5 +3 x^{2}$

$-5+5x^{2}=5$

Add 5 on both sides.

$-5+5x^{2}+5=5+5$

$5x^{2}=10$

Divide by 5 on both sides, we get

$x^{2}=2$

Taking square root on both sides, we get

$x=\sqrt{2}, x=-\sqrt{2}$

Substitute $x=\sqrt{2}$ in (1).

$y=-5+2(\sqrt{2})^2$

$y=-5+4$

$y=-1$

Substitute $x=-\sqrt{2}$ in (1).

$y=-5+2(-\sqrt{2})^2$

$y=-5+4$

$y=-1$

Therefore the solutions are $(\sqrt{2},-1) \text { and }(-\sqrt{2},-1)$ .

Option C is the correct answer.

6 0

3 years ago

Simplify the numerical expression. 125.7 - (-1.82).

sergey [27]

125.7 - ( - 1.82 )
125.7 + 1.82
127.52

6 0

3 years ago

BRAIN TO CORRECT ANSWER!!

zmey [24]

Answer:

It is B

Step-by-step explanation:

3 0

3 years ago