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3 years ago

12

if 40% of the pieces of cheese on a cheese platter are chedar and there are 50 pieces of cheddar cheese on the platter, how many

total pieces of cheese are on the platter?

1 answer:

never [62]3 years ago

3 0

125 I think double check

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Nicolas is setting up water stations for a 10-mile run. He already has the first one set up 8 miles from the starting line. He n

sesenic [268]

Let x be the distance of the additional water stations from the starting line.
We want on that is 1.5 miles behind the 8-mile water station, and one that is 1.5 miles ahead. The following absolute value function describes x:
|x-1.5| = 8
Two numbers comply: x= 9.5 and 6.5.
The additional water stations will be 6.5 and 9.5 miles from the starting line.

5 0

3 years ago

Read 2 more answers

Which has greater value? 6*10^-6 and 2*10^-8

antiseptic1488 [7]

There are equal so neither

5 0

3 years ago

ANSWER ASAP PLZ!!

Vikentia [17]

$\text{If is}\\\\\left\{\begin{array}{ccc}0.2-0.3y=4\\2.3x-y=1.2\end{array}$

Answer:

$\large\boxed{\left(-\dfrac{344}{69},\ -\dfrac{38}{3}\right)}$

Step-by-step explanation:

$\left\{\begin{array}{ccc}0.2-0.3y=4\\2.3x-y=1.2&\text{multiply both sides by (-0.3)}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}0.2-0.3y=4\\-0.69x+0.3y=-0.36\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad-0.69x+0.2=3.64\qquad\text{subtract 0.2 from both sides}\\.\qquad-0.69x=3.44\qquad\text{divide both sides by (-0.69)}\\.\qquad x=-\dfrac{3.44\cdot100}{0.69\cdot100}\\.\qquad \boxed{x=-\dfrac{344}{69}}\\\\\text{Calculate the value of y from first equation:}$

$0.2-0.3y=4\qquad\text{subtract 0.2 from both sides}\\-0.3y=3.8\qquad\text{divide both sides by (-0.3)}\\y=-\dfrac{3.8\cdot10}{0.3\cdot10}\\\boxed{y=-\dfrac{38}{3}}$

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$\text{If is}\\\\\left\{\begin{array}{ccc}0,2x-0,3y=4\\2.3x-y=1.2\end{array}\right$

Answer:

$\large\boxed{\left(-\dfrac{52}{7},\ -\dfrac{128}{7}\right)}$

Step-by-step explanation:

$\left\{\begin{array}{ccc}0.2x-0.3y=4&\text{multiply both sides by 10}\\2.3x-y=1.2&\text{multiply both sides by 10}\end{array}\right\\\\\left\{\begin{array}{ccc}2x-3y=40&\text{multiply both sides by (-10)}\\23x-10y=12&\text{multiply both sides by 3}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}-20x+30y=-400\\69x-30y=36\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad49x=-364\qquad\text{divide both sides by 49}\\x=-\dfrac{364:7}{49:7}\\.\qquad\boxed{x=-\dfrac{52}{7}}$

$2\left(-\dfrac{52}{7}\right)-3y=40\\-\dfrac{104}{7}-3y=40\qquad\text{multiply both sides by 7}\\-104-21y=280\qquad\text{add 104 to both sides}\\-21y=384\qquad\text{divide both sides by (-21)}\\y=-\dfrac{384:3}{21:3}\\\boxed{y=-\dfrac{128}{7}}$

7 0

4 years ago

2) Alison has $4 less than twice the amount Ben has. Write an expression

xenn [34]

Answer:

8

Step-by-step explanation:

i'ev got a feeling ooooohhh ooooohhhh

6 0

3 years ago

Enter an equation for the function. Give your answer in the form a(b)". In the event that a = 1, give your

Anna [14]

Answer:

$r(n)=14,000(0.50)^n$

Step-by-step explanation:

we know that

The equation of a exponential decay function is equal to

$r=a(1-r)^n$

where

r is the number of bacteria remaining

n is the number of hours since the antibiotic was applied

a is the initial value

r is the rate of change

we have

$a=14,000\ bacteria\\r=50\%=50/100=0.50$

substitute

$r(n)=14,000(1-0.50)^n$

$r(n)=14,000(0.50)^n$

8 0

4 years ago