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3 years ago

Which lines are parallel to 8x + 4y = 5? Select all that apply.

Mathematics

2 answers:

Dvinal [7]3 years ago

5 0

Answer:

A , B , C

Step-by-step explanation:

1) find the slope of the given line

slope = (-a/b) = (-8/4) = -2

two parallel lines have the same slope

A : correct

B : (-a/b) = -16/8 = -2 (correct)

C : correct

D : wrong (2 is different from -2)

Karolina [17]3 years ago

5 0

Options A, B, C are all correct

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3 years ago

Serena estimates that she can paint 60 square feet of wall space every half-hour. Write an equation for the relationship with ti

Katarina [22]

Answer:

So, the relationship with i hours as the indecent variables would be

Serena can't paint 400 square feet of wall space of wall space in 3.5 hours.

Step-by-step explanation:

Since we have given that

Area that she can paint = 60 square feet

Time taken = half hour = 30 minutes = 0.5 hours

Using "Unitary method, we get that

In 0.5 hours, she can paint = 60 square feet

In 1 hour, she can paint =

In i hours, she can paint =

Let the total area she can paint be 'y'.

So, the relationship with i hours as the indecent variables would be

Now, Can Serena paint 400 square feet of wall space i. 3.5 hours

We put y = 400 and i = 3.5 hours to check whether it is equal or not.

Hence, Serena can't paint 400 square feet of wall space of wall space in 3.5 hours.

6 0

3 years ago

Read 2 more answers

Help! How do you do it?

Wittaler [7]

Here you should add the like terms; so 6 + 3 = 9 and 5*(sq.root of 5) - 2*(sq.root of 5) = 3*(sq.root of 5), therefor the answer would be 3*(sq.root of 5) + 9

Remember that surds can be added or subtracted if the term underneath the square root sign is the same :)

4 0

4 years ago

Polygon B BB is a scaled copy of Polygon A AA using a scale factor of 5 55. How many times larger is the area of Polygon B BB th

stira [4]

Answer:

308025 times larger

Step-by-step explanation:

The polygon BBB is a scaled copy of polygon A using a scale factor of 555.

This means for every length of polygon AAA, polygon BBB is 555 times larger.

Recall area is in $L^{2}$ .