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3 years ago

PLEASE HELP ME IM NEW TO THIS PROGRAM AND I DONT KNOW HOW TO DO THIS

Mathematics

1 answer:

Elenna [48]3 years ago

3 0

First in the right one; second in the left one; third in the right one; fourth in the left one; fifth in the right one

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Solve for x in x²+8x+15=0 in factorisation method

Genrish500 [490]

Answer: $x=-5, -3$

Step-by-step explanation:

$x^2 +8x+15=0\\\\(x+5)(x+3)=0\\\\x=-5, -3$

7 0

2 years ago

What is the midpoint of EC ?

sladkih [1.3K]

<u>Given</u>:

Given that the graph OACE.

The coordinates of the vertices OACE are O(0,0), A(2m, 2n), C(2p, 2r) and E(2t, 0)

We need to determine the midpoint of EC.

<u>Midpoint of EC:</u>

The midpoint of EC can be determined using the formula,

$Midpoint=(\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2})$

Substituting the coordinates E(2t,0) and C(2p, 2r), we get;

$Midpoint=(\frac{2t+2p}{2},\frac{0+2r}{2})$

Simplifying, we get;

$Midpoint=(\frac{2(t+p)}{2},\frac{2r}{2})$

Dividing, we get;

$Midpoint=(t+p,r)$

Thus, the midpoint of EC is (t + p, r)

Hence, Option A is the correct answer.

4 0

3 years ago

Find the sun of the interior angles for each polygon

sergeinik [125]

Answer:

360

1080

Step-by-step explanation:

We can find the sum of the interior angles of any regular polygon by using this formula

(n - 2) * 180

where n = number of sides

For the square: the square has 4 sides

To find the sum of the interior angles we simply substitute 4 for n in the formula

Formula: (n - 2) * 180

Substitute 4 for n

(4 - 2 ) * 180

Subtract 4-2

2 * 180

Multiply

= 360

The sum of the interior angles of the first polygon is 360

For the second one:

We will repeat this exact process the only difference is the value of "n"

The polygon shown has 8 sides

So to find the sum of the interior angles we simply substitute 8 for n in The formula

Formula (n - 2) * 180

Substitute 8 for n

(8 - 2) * 180

Subtract 8 - 2

6 * 180

Multiply

= 1080

The interior angles of a 8 sided figure will add up to 1080

7 0

3 years ago

What is the simplified form of 3 Start Root 5 c End Root times Start Root 15 c cubed End root? (worth 30 brainily points)

aleksley [76]

Answer:

A. 15 c squared Start Root 3 End Root

Step-by-step explanation:

$3\sqrt{5c} *\sqrt{15c^3} \\$

Multiply the terms inside the square roots together

$3\sqrt{75c^4}$

Look for items that are perfects squares

$3\sqrt{25*3*c^4}$

We can separate terms inside the square root into separate square roots

$3\sqrt{25} *\sqrt{3}*\sqrt{c^4}$

$3*5 *\sqrt{3} *c^2$

Combine like terms

$15c^2\sqrt{3}$

8 0

3 years ago

Determine the measure of the unknown angle in the triangle.

daser333 [38]

you add 78 plus 37 then subtract from 180

4 0

3 years ago

Read 2 more answers