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3 years ago

Nvmnjnjknkjnknjobkjbkbkbkbkjbkjb

Mathematics

1 answer:

oksian1 [2.3K]3 years ago

3 0

I think you are right since 2 plus 2 equals 4

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A number w decided by 5 equals 6

Taya2010 [7]

Answer:

w = 30

Step-by-step explanation:

30/5 = 6

Hope this helps!

7 0

3 years ago

What is 5(z+4)−13=2z+19 simplifyed

mariarad [96]

Step-by-step explanation:

open brackets

5z+20-13=2z+19

5z+7=2z+19

3z=12

z=4

8 0

3 years ago

Read 2 more answers

PLEASE HELP ASAP! A mountain climber is at an altitude of 2.9 mi above the earth’s surface.

shutvik [7]

You can use Pythagorean theorm to solve.

$a^2 + b^2 = c^2$
C = 3959 + 2.9 = 3961.9

x = ???? = a
b = 3959
Plugin our data.
$a^2 + b^2 = c^2$
$a^2 + 3959^2 = 3961.9^2$
$a^2 + 15673681 = 15696651.61$
$a^2 = 22970.61$
$\sqrt{a^2} = sqrt{22970.61}$
$a = 151.560$
$x = 151.560$
$x = 151.6$

7 0

4 years ago

I fill an aquarium to a depth of 3/8 meters in 6 minutes. What is the unit rate in minutes per meter?

Elena L [17]

Answer:

16 minutes per meter

Step-by-step explanation:

Depth = 3/8 meters

Time taken = 6 minutes

What is the unit rate in minutes per meter?

Time taken per depth = minutes per meter

Unit rate in minutes per meter = 6 minutes ÷ 3/8 meters

= 6 minutes × 8/3 meters

= 48/3

= 16 minutes per meter

5 0

3 years ago

Randall wants to mix 50 lb of nuts worth $2 per lb with some nuts worth $7 per lb to make a mixture worth $6 per lb. How many po

defon

A = nuts of $2/lb

B = nuts of $7/lb

let's say we'll mix "x" lbs of B to get a mixture with A of "y" lbs, therefore

$\bf \begin{array}{lcccl} &\stackrel{lbs}{quantity}&\stackrel{\textit{cost}}{per~lb}&\stackrel{\textit{cost}}{total}\\ \cline{2-4}&\\ A~ nuts&50&2&100\\ B~nuts&x&7&7x\\ \cline{2-4}&\\ mixture&y&6&6y \end{array} \\\\\\ \begin{cases} 50+x=\boxed{y}\\ 100+7x=6y \end{cases}\qquad \qquad \implies 100+7x=6\left( \boxed{50+x} \right) \\\\\\ 100+7x=300+6x\implies \blacktriangleright x=200 \blacktriangleleft$

3 0

3 years ago