Ask question

Ask question

All categories

3 years ago

13

What would be an equation for this?

1 answer:

horsena [70]3 years ago

3 0

Answer:

This is a system of equations, meaning there are two equations you will need to use. The first equation would be d + n = 35, where d = dimes and n = nickels. The second equation would be 10d + 5n = 250, since each dime is 10 cents and each nickel is 5 cents totaling at 250 cents. To solve for nickels, solve one equation for dimes and substitute the answer into the d in the other equation. If you need any more help with this one I am happy to help.

Step-by-step explanation:

You might be interested in

A letter is chose at random from the word PROGRESSIVENESS.

Vitek1552 [10]

Answer:

2nd option

Step-by-step explanation:

ggggushdhdhdhcghfjf

5 0

3 years ago

If there are approximately 1.8 million cars in Vancouver and if each car travels an average of 17,500 kilometres in a year, how

Goryan [66]

Rates are used to measure a quantity over another.

<em>The 1.8 million cars use </em> $1.85 \times 10^{10}$ <em> liters each year</em>

Given

$Cars = 1.8\ million$

$d = 17500km$ --- distance

$r = 40miles/gallon$

First, we calculate the number (n) of gallons used by each car

$r = \frac{d}{n}$

Solve for n

$n = \frac{d}{r}$

So, we have:

$n = \frac{17500km}{40miles/gallon}$

$n = \frac{17500km}{40miles}gallon$

Convert miles to kilometers

$n = \frac{17500km}{40km \times 1.60934}gallon$

$n = \frac{17500km}{64.3738km}gallon$

$n = 271.85\ gallon$

The number of gallons (N), used by all the cars is:

$N = n \times cars$

$N = 271.85 \times 1.8\ million$

$N = 489330000$

Convert to liters

$N = 489330000 \times 3.78541L$

$N = 1852314675.3L$

In scientific notation to 2 decimal places, we have:

$N = 1.85 \times 10^{10}L$

<em>Hence, the number of liters used is </em> $1.85 \times 10^{10}$ <em />

Read more about distance and rates at:

brainly.com/question/24659604

4 0

3 years ago

Michael walks his black lab 6 2/3 miles every week. If he walks his dog every Monday, Wednesday, Friday, and Sunday. How many mi

Elenna [48]

Answer: 1.7 miles

Step-by-step explanation:

dog is walked four times a week

6 2/3 miles in all

6 2/3 divided by 4 = 1.66666667

1.66666667 rounded to nearest tenth = 1.7

6 0

3 years ago

horsena [70]

Answer:

<em>A(x) = 6x² + 26x </em>

Step-by-step explanation:

A(x) = 4x ( x + 10 ) - 2x ( 8 ) + $\frac{2x(x)}{2}$ + $\frac{2x(x+2)}{2}$

A(x) = 4x² + x² + x² + 40x - 16x + 2x

<em>A(x) = 6x² + 26x</em>

7 0

2 years ago

Help me please this is due today

mojhsa [17]

Answer:

your answers obviously 210

6 0

3 years ago

Read 2 more answers