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3 years ago

Need Help With This

Mathematics

1 answer:

podryga [215]3 years ago

4 0

Answer:

4n-13

Step-by-step explanation:

Terms= -13 (constant)

Coefficient= 3, -5, 6

Like term= 3n, -5n, 6n

3n-13-5n+6n

3n+6n-5n-13

9n-5n-13

4n-13

Hope this helps ;) ❤❤❤

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Welding a heavy steel plate with a V groove joint required 1,248 ounces of filler. The plate was 3" thick and 208 " long. How ma

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Answer:

Step-by-step explanation:

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3 years ago

Write the equation given the point 4,2 and slope 1/2

raketka [301]

Hello.

We have a point that the line passes through and its slope.

Let's write the equation in Point-Slope Form:

y-y₁=m(x-x₁)

In this case,

y₁=2

m= $\displaystyle\frac{1}{2}$

x₁=4

Plug in the values:

$\mathrm{y-2=\displaystyle\frac{1}{2} (x-4)}$

This is point-slope form. Now, what about Slope-Intercept?

First, we should distribute $\displaystyle\frac{1}{2}$ :

$\mathrm{y-2=\displaystyle\frac{1}{2} x-2}$

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Simplify:

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I hope it helps.

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3 0

2 years ago

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write a word problem that you can represent with the expression 8÷2/3. draw a model and use equation to show the solution

Mariana [72]

Answer:

The word problem is " In a class there are 8 boys and these are 2/3rd parts of total students. How many students are there".

Step-by-step explanation:

The given expression is

$8\div \frac{2}{3}$

We need write a word problem which is solved by the above expression.

Word problem : In a class there are 8 boys and these are 2/3rd parts of total students. How many students are there.

Solution:

Let the total number student be x.

$x\times \frac{2}{3}=8$

Divide both sides by 2/3.

$x=\dfrac{8}{\frac{2}{3}}$

$x=\dfrac{8\times 3}{2}$

$x=12$

Therefore, the total number of students is 12.

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3 years ago

Natalie walked

creativ13 [48]

Answer:

7 miles / hour

Step-by-step explanation:

I'm taking this to mean she walked 3.5 miles. She did this 1/2 hour.

Givens

d (distance ) = 3.5 miles

t (time) = 1/2 hour

r (rate) = ?

Formula

r = d/t

Solution

The easiest way to do this is to change the fractions to decimals.

t = 1/2 = 0.5 hours

r = 3.5 / 0.5

r = 7 miles per hour.

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3 years ago

Denise earns $30 an hour. She works 40 hours per week. A. Create and solve an expression to represent how much money Denise earn

GenaCL600 [577]

Answer:

$1,200

Step-by-step explanation:

Let x be the hours Denise works in a week, and y be her earnings per week.

y = ($30/hr)(x)

For a 40 hour week, Denise earns:

y = ($30/hr)(40 hr/week)

y = $1,200 in a week.

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3 years ago

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