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3 years ago

I need help with this lol

Mathematics

1 answer:

patriot [66]3 years ago

5 0

3. y-intercept is when x=0, so 2. Slope is change in y divided by change in x, so 4/3, which rounds to 1.3.

4. the equation: y=mx+d, so substitute m for the slope and d as the y-intercept, so you get y=1.3x+2

5. When you look at the graph, when x=7, then y=80. So the student may get an 80.

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Answer it pls and explain too

snow_tiger [21]

Answer:

y-intercept: (0, 5); slope: 1/4

Step-by-step explanation:

The slope (m) is found from ...

m = (y2 -y1)/(x2 -x1)

Using the first two points in the table, this is ...

m = (8 -6)/(12 -4) = 2/8 = 1/4 . . . . . eliminates choices A and C

Then, the point-slope form of the equation of the line can be written as ...

y -y1 = m(x -x1)

y -6 = (1/4)(x -4) . . . fill in known values

y = 1/4x -1 +6 . . . . . add 6

y = 1/4x +5

Then the value of y when x=0 is ...

y = 0 +5 = 5

So, the y-intercept is (0, 5) and the slope is 1/4, matching the last choice.

7 0

3 years ago

Rewrite (21+31).4 using the disbributive property of multiplication over addition

Mamont248 [21]

Answer: evaluate it is 52

Step-by-step explanation:

7 0

3 years ago

Find the perimeter of a rectangle with a length of

Luba_88 [7]

Answer:

$P = 8\sqrt{2} + 10 + 2\sqrt{6}$

Can only be simplified through calculator using decimal equivalents.

Step-by-step explanation:

The perimeter of a rectangle is the formula P=2l+2w. Here $l=4\sqrt{2}$ and $w=5+\sqrt{6}$ . So the perimeter is:

$P= 2l+2w\\P = 2(4\sqrt{2} ) + 2(5+\sqrt{6} )\\P = 8\sqrt{2} + 10 + 2\sqrt{6}$

4 0

3 years ago

12.5 percent of what number is 24

irina [24]

24 : 12.5/100 = 24 * 100/12.5 = 192;

3 0

3 years ago

A car travels at 20 meters per second.

7nadin3 [17]

Answer:

72 km/hour

Step-by-step explanation:

20 m/s × (1 km/(1000 m)) × (3600 s/h) = 72 km/h

The rate is 72 kilometers per hour.

3 0

3 years ago

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