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3 years ago

Y + 2 = -3/4(x+1) Standard form.

Mathematics

1 answer:

evablogger [386]3 years ago

7 0

I have the answer in this picture. But im not sure if this might be really what your asking for.

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A box contains 4 red pencils and 6 black pencils. What fraction of the pencils are red write two equivalent fractions

sergejj [24]

It is 4/6 or 2/3. This is the only answer that i beleive is correct

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4 years ago

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PLEASE ANSWER PRETTY EASY BUT NEED HELP!!! LOTS OF POINTS AND BRAINLIEST :)

AnnZ [28]

Answer:

Step-by-step explanation:

Make and equation and solve for x.

(2x+10)^2 = 4(x-5)^2 Now the easiest thing to do is use the formula for squared binomial, (a+b)^2 = a^2 + 2ab + b^2.

4x^2 + 40x + 100 = 4(x^2 - 10x + 25)

4x^2 + 40x + 100 = 4x^2 - 40x + 100

From hear you can cancel out similar terms

40x + 100 = - 40x + 100

40x = -40x

add 40x to both sides

80x = 0

x = 0

The only solution to this is 0.

5 0

3 years ago

Find the circumference of the circle radio 3.5 cm

avanturin [10]

Answer:

21.98

Step-by-step explanation:

c= $\pi$ 2(3.5)

8 0

3 years ago

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Tiles Vivian is doing word searches on her smartphone. Her highest score in the game is 42 points higher than her lowest score.

luda_lava [24]

HS = LS + 42
HS = 438

438 = LS + 42
438 - 42 = LS
396 = LS

7 0

3 years ago

DochEvi [55]

Answer:

12pi cm

Step-by-step explanation:

The Perimeter of the full shape is the sum of the lengths of the edges of the parts. For convenience in referencing them, we'll call the large curve " $curve_{big}$ " and the three smaller curves " $curve_1$ " " $curve_2$ " " $curve_3$ " in order from left to right.

Thus, the Perimeter of the full shape can be written as an equation:

$P_{overall} = Length(curve_{big})+Length(curve_1)+Length(curve_2)+Length(curve_3)$ Since all of those edge lengths are curves, and the question states that all of the curves are made from parts of circles, then we need to know how to find the length of the edge of a circle.

<u>Parts of a circle</u>

Since values in the diagram are diameters, use the formula for the Perimeter of a circle $P=\pi d$ (where d is the diameter).

Let's call the diameters of each of our curves " $d_{big}$ " " $d_1$ " " $d_2$ " " $d_3$ ", with the subscripts denoting which curve we're referring to.

Note that for each curve, the curve only represents half of a circle. So, to find the length of each curve, we'll need half of the full perimeter of each circle.

So for instance: $Length(curve_{big})=\frac{1}{2} \pi d_{big}$

Substituting back into the main equation above:

$P_{overall} = Length(curve_{big})+Length(curve_1)+Length(curve_2)+Length(curve_3)$ $P_{overall}=\frac{1}{2} \pi d_{big} + \frac{1}{2} \pi d_{1} + \frac{1}{2} \pi d_{2} + \frac{1}{2} \pi d_{3}$

Note that all terms have common factors of "one-half" and "pi" in them. These can be factored out:

$P_{overall}=\frac{1}{2} \pi (d_{big} + d_{1} + d_{2} +d_{3})$

The diameter for the large Curve, is the sum of the three small diameters, so $d_{big}=12cm$ , and $d_{1}=d_{2}=d_{3}=4cm$

Substituting and simplifying (in terms of pi):

$P_{overall}=\frac{1}{2} \pi ( (12cm) + (4cm) + (4cm) + (4cm) )\\P_{overall}=\frac{1}{2} \pi ( 24cm)\\P_{overall}=12 \pi cm$

<u>Additional Understanding</u>

Interesting for this problem, since the diameters of the 3 small curves formed the diameter of the large curve $d_{1} + d_{2} + d_{3} =d_{big}$ , one could make a different substitution into one of our formulas above:

$P_{overall}=\frac{1}{2} \pi (d_{big} + d_{1} + d_{2} +d_{3})$

$P_{overall}=\frac{1}{2} \pi (d_{big} + (d_{big}))$

$P_{overall}=\frac{1}{2} \pi (2d_{big})$

$P_{overall}=\pi d_{big}$

Notice that $\pi d_{big}$ is just the full perimeter of a circle with the big diameter.

So, if one imagined starting with a full circle with the big diameter, even though the bottom half of the circle was turned into a bunch of smaller half circles, since they were in a line along the diameter of the large circle, the full perimeter of the new shape didn't change.

The number of smaller circles doesn't need to be 3 either... as long as it goes the full distance across, right along the diameter.

7 0

2 years ago