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3 years ago

Solving an Equation for a Given Variable

Mathematics

2 answers:

skelet666 [1.2K]3 years ago

7 0

What nath is this ??????????

Rom4ik [11]3 years ago

6 0

I think it is that a

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What is the area of the triangle below (in square units)?<br> 10 mm<br> 90mm

bixtya [17]

Answer:

450

Step-by-step explanation:

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3 years ago

Read 2 more answers

Last math question.

siniylev [52]

Answer:

Step-by-step explanation:

$\text{The slope-intercept form of an equation of a line:}\\\\y=mx+b\\\\m-\text{slope}\\b-\text{y-intercept}\\\\\text{Let}\\\\k:y=m_1x+b_1\\l:y=m_2x+b_2\\\\k\ \perp\ l\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\\\k\ ||\ l\iff m_1=m_2\\=========================$

$\text{We have}\ y=5x+2\to m_1=5\\\\\text{therefore}\ m_2=5.\\\\\text{Put the value of the slope and the coordinates of the given point (-2, 1)}\\\text{to the equation of a line:}\\\\1=5(-2)+b\\1=-10+b\qquad\text{add 10 to both sides}\\1+10=-10+10+b\\11=b\to b=11\\\\\text{Finally:}\\\\y=5x+11$

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3 years ago

erastovalidia [21]

Answer:

D.) 4x + y

Step-by-step explanation:

3x + x + y

Add 3 x and x .

4 x + y

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3 years ago

a father and his son clean the house together in 2 hours. when the son works alone, it takes him an hour longer to clean than it

Marizza181 [45]

It takes the son one and half hours to clean the house. To find this you need the equations F+S=2 and F+1=S. (F=father and S=son) You take the F+1 and substitute it in for S in F+S to get F+(F+1)=2. Then you combined like factors, 2F+1=2, and simplify to get F=.5hr. After this you plug .5 in to F+1=S to get (.5)+1=S, meaning it takes the son 1.5 hour to clean the house.

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3 years ago

3/4, find the surface area

Semmy [17]

Answer:

1,350 cm^2

Step-by-step explanation:

It's a cube so all faces/bases are the same.

15 × 15 = 225

225 × 6 = 1,350

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3 years ago