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3 years ago

PLEASE HELP!!! PLEASE HELP!!!

Mathematics

2 answers:

Levart [38]3 years ago

7 0

So if we look at the equation, there is a common factor of 5x in both variables.

So basically 5x (2x -1) is our answer since 5x * 2x = 10x^2 and 5x * -1 = -5x

Marianna [84]3 years ago

5 0

D because you factor out a 5x from each thing. When you take 5x out from 10x^2, divide 10 by the 5 and you get 2 and divide the x^2 by x and you get x, so you’re left with 2x. Also, divide 5x by 5x and you get 1, and so you get D

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Solve for x. 5x^2 – 45 = 0

mamaluj [8]

5x^2-45=0

*Add 45 to both sides*

5x^2=45

*Divide both sides by 5*

x^2=9

*Take the square root of both sides*

x=+/-9

Hope this helps!!

3 0

4 years ago

Read 2 more answers

2. Which diagram shows a point P an equal distance from points A, B, and C?H

amm1812

Answer:

The correct option is (a).

Step-by-step explanation:

The vertices are equidistant from the circumcenter.

Circumcenter of a triangle is a point where the perpendicular bisectors are intersection each other.

In figure (a) the point P is the intersection point of all perpendicular bisector, therefore point P is the circumcenter of triangle ABC and the point P is equidistant from A,B and C.

Therefore option (a) is correct.

In figure (b) the point P is the intersection point of all perpendicular, therefore point P is not the circumcenter of triangle ABC.

Therefore option (b) is incorrect.

In figure (c) the point P is the intersection point of all bisectors, therefore point P is not the circumcenter of triangle ABC.

Therefore option (c) is incorrect.

In figure (d) the point P is the intersection point of all medians, therefore point P is not the circumcenter of triangle ABC.

Therefore option (d) is incorrect.

4 0

3 years ago

Read 2 more answers

If an image of a triangle is congruent to the pre-image, what is the scale factor of the dilation?

likoan [24]

Answer:

The scale factor is 1.

Step-by-step explanation:

Let k be the scale factor of a dilation of triangle ABC to form the image triangle A'B'C'.

The dilation is a magnification if

$|k| > 1$

In this case, the preimage will be similar to the image triangle.

$- 1\: < \: k \: < \: 0 \: \: or \: \: 0 \: < \: k \: < \: 1$

the dilation is a reduction. The image and pre-image will still be similar.

But if

$k = 1$

the image is the same as the preimage.

We say the pre-image is congruent to the image triangle.

5 0

3 years ago

Nick wants to fence in a rectangular section of his yard to make a dog run that has a perimeter of at least 48 ft. The total len

tatyana61 [14]

Answer:

Step-by-step explanation:

7 0

4 years ago

1/2 of the children at a party like chocolate ice cream, 2/3 like vanilla ice cream, and 1/3 like chocolate and vanilla. What fr

alexandr402 [8]

Answer:

$\frac{1}{2}$

Step-by-step explanation:

We have been given that 1/2 of the children at a party like chocolate ice cream, 2/3 like vanilla ice cream, and 1/3 like chocolate and vanilla.

To find the fraction of children, who like vanilla also like chocolate, We will divide the fraction of children who like chocolate and vanilla by the fraction of children who like vanilla.

$\text{Fraction of those who like vanilla also like chocolate}=\frac{\frac{1}{3}}{\frac{2}{3}}$

Since we know that dividing a fraction by another fraction is same as multiplying the first fraction by the reciprocal of second fraction.

$\text{Fraction of those who like vanilla also like chocolate}=\frac{1}{3}\times\frac{3}{2}$

After cancelling out 3 from numerator and denominator of our fraction, we will get,

$\text{Fraction of those who like vanilla also like chocolate}=\frac{1}{2}$

Therefore, the fraction of those who like vanilla also like chocolate is $\frac{1}{2}$ .

6 0

3 years ago

Read 2 more answers