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2 years ago

How can you tell if (4,7) is a solution

Mathematics

2 answers:

Diano4ka-milaya [45]2 years ago

6 0

you have to plug it into your equation

Dafna1 [17]2 years ago

6 0

Answer:

In order to check if the x and y value is a solution then you need to plug in your numbers for the x and why value.

Take this as an example with your solution (4,7) let's try 4x-9=y. We want to plug in the values of each variable so the new equation will look like 4(4)-9=(7). Now you want to multiply and get 16-9=7 next subtract and you get 7=7. This would be a solution for the problem.

Now we can try 3x+14=y do the same thing from last example and you'll get 3(4)-14=7 and now multiply to get 12-14=7 now subtract and you'll get -2=7 which is NOT a solution to this equation so it would become -2≠7.

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Tom has been playing on the school bowling team. In his first year as a freshman, his bowling average was 180. He had been bowli

Advocard [28]

Answer:

0.000025

Step-by-step explanation:

the difference between225-180=45

so the percentage= 45×100/100

=0.45%

as the instruction say=0.45%/180

=0.0045/180

=45/1800000

=0.000025

3 0

2 years ago

The equation V=13πr2h relates the volume V, the radius r, and the height h of a cone. Write h in terms of V and r.

maksim [4K]

$V= \frac{1}{3} \pi r^2h \\ \\ 3V= \pi r^2h \\ \\ h= \cfrac{3V}{\pi r^2}$

6 0

3 years ago

Read 2 more answers

In the equation 0.75s-5/8 = 44, how do you combine the like terms?

garri49 [273]

Answer:

Step-by-step explanation:

In the given equation, the "like terms" are the constants 5/8 and 44.

It simplifies the math if we eliminate the fractions first. Note that 0.75 = 6/8, so now we have:

8(6/8)s - 8(5/8) = 44).

Multiplying all three terms by 8 (above) yields

8(6s) - 8(5) = 8(44), or

48s = 8(44 + 5), or 48s = 8(49)

Dividing both sides by 48 yields s: s = 8(49/48)

Review "like terms:" These are terms that have at least one characteristic in common. 5/8 and 44 are like terms because they are only constants (no variables are present). We must add 5/8 and 44. 0.75s does not have a "like term" in the given equation.

6 0

2 years ago

The jars of paint in the art room have different amounts of paint. The green paint jar is 4/8 full. The purple paint jar is 4/6f

natulia [17]

4/8 is less full because it's only half compared to 4/6 which is 1.5

7 0

3 years ago

3. A piece of white oak has a densityof 0.77 g/cm and a mass of 100 g,what would be the volume of thesample? PLEASE HELP!

Nezavi [6.7K]

$\text{Volume}=129.87cm^3$

Explanation

Step 1

the density of an object is given by:

$\text{density}=\text{ }\frac{mass}{\text{volume}}$

Step 2

let

$\begin{gathered} \text{density}=0.77\frac{g}{cm^3} \\ \text{mass}=\text{ 100 g} \\ \end{gathered}$

Step 3

replace,

$\begin{gathered} \text{density}=\text{ }\frac{mass}{\text{volume}} \\ 0.77\frac{g}{cm^3}=\frac{100g}{\text{volume}} \\ \text{volume}\cdot0.77\frac{g}{cm^3}=\text{1}00\text{ g} \\ \\ \text{Volume}=\frac{100\text{ g}}{0.77\frac{g}{cm^3}} \\ \text{Volume}=129.87cm^3 \end{gathered}$

I hope this helps you

5 0

1 year ago