All categories

3 years ago

What does 15 and 16 mean

Mathematics

1 answer:

Law Incorporation [45]3 years ago

7 0

Seems like a proportions problem
In 15, you have 3 boxes and your partner has 1. Total 4 boxes. Each represents 12/4=3 hours. So you have 3 boxes = 3*3=9 hours and your friend has 3 hours.

Same method in 16. You have 4 and your friend has 8

You might be interested in

Paisley's car used 11 gallons to travel 374 miles. How many gallons of gas would she need to travel 442 miles?

katen-ka-za [31]

Answer:

13 gallons

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

PLEASE HELP ASAP!!! PLEASE HELP ASAP!!! PLEASE HELP ASAP!!! PLEASE HELP ASAP!!! PLEASE HELP ASAP!!! PLEASE HELP ASAP!!! PLEASE H

jok3333 [9.3K]

D) 7 8/9 gallons

hope this helps

3 0

3 years ago

Read 2 more answers

Find the value of f(7) if f(x) = x^2 - 8x + 2

S_A_V [24]

Answer:

-5

Step-by-step explanation:

5 0

3 years ago

For every 5 chickens there were 10 eggs. What are the three ways to write this ratio?

mixas84 [53]

Answer:

The first 3

Step-by-step explanation:

If this helped you please rate this comment, give it a like, and maybe mark it as branliest!

5 0

3 years ago

Read 2 more answers

Solve the equation x+3/x-4 = x-5/x+4

Serga [27]

Answer:

$\large\boxed{x=\dfrac{1}{2}}$

Step-by-step explanation:

$\dfrac{x+3}{x-4}=\dfrac{x-5}{x+4}\\\\\text{Domain:}\ x-4\neq0\ \wedge\ x+4\neq0\\\\x\neq4\ \wedge\ x\neq-4\\\\D:x\in\mathbb{R}-\{-4,\ 4\}$

$\dfrac{x+3}{x-4}=\dfrac{x-5}{x+4}\qquad\text{cross multiply}\\\\(x+3)(x+4)=(x-4)(x-5)\qquad\text{use FOIL}\ (a+b)(c+d)=ac+ad+bc+bd\\\\(x)(x)+(x)(4)+(3)(x)+(3)(4)=(x)(x)+(x)(-5)+(-4)(x)+(-4)(-5)\\\\x^2+4x+3x+12=x^2-5x-4x+20\qquad\text{combine like terms}\\\\x^2+(4x+3x)+12=x^2+(-5x-4x)+20\\\\x^2+7x+12=x^2-9x+20\qquad\text{subtract}\ x^2\ \text{from both sides}\\\\7x+12=-9x+20\qquad\text{subtract 12 from both sides}\\\\7x=-9x+8\qquad\text{add}\ 9x\ \text{to both sides}\\\\16x=8\qquad\text{divide both sides by 16}\\\\x=\dfrac{8}{16}\\\\x=\dfrac{8:8}{16:8}\\\\x=\dfrac{1}{2}\in D$

7 0

3 years ago