All categories

4 years ago

Hurry!!!!! Which statement about the dilation of these is true

Mathematics

1 answer:

leva [86]4 years ago

4 0

Answer:

Step-by-step explanation:

For the image, you just multiply the numbers to find the sides

(4*2=8 5*2=10 3*2=6)

Then find out how you went from the preimage to the image.

4 * 2 = 8 etc.

You might be interested in

when 6 is subtracted from the square of a number, the result is 5 times the number. Find the negative solution.

sveta [45]

When 6 is subtracted from the square of a number, the result is 5 times the number, then the negative solution is -1

<h3><u>Solution:</u></h3>

Given that when 6 is subtracted from the square of a number, the result is 5 times the number

To find: negative solution

Let "a" be the unknown number

Let us analyse the given sentence

square of a number = $a^2$

6 is subtracted from the square of a number = $a^2 - 6$

5 times the number = $5 \times a$

<em><u>So we can frame a equation as:</u></em>

6 is subtracted from the square of a number = 5 times the number

$a^2 - 6 = 5 \times a\\\\a^2 -6 -5a = 0\\\\a^2 -5a -6 = 0$

<em><u>Let us solve the above quadratic equation</u></em>

For a quadratic equation $ax^2 + bx + c = 0$ where $a \neq 0$

$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

Here in this problem,

$a^2-5 a-6=0 \text { we have } a=1 \text { and } b=-5 \text { and } c=-6$

Substituting the values in above quadratic formula, we get

$\begin{array}{l}{a=\frac{-(-5) \pm \sqrt{(-5)^{2}-4(1)(-6)}}{2 \times 1}} \\\\ {a=\frac{5 \pm \sqrt{25+16}}{2}=\frac{5 \pm \sqrt{49}}{2}} \\\\ {a=\frac{5 \pm 7}{2}}\end{array}$

We have two solutions for "a"

$\begin{array}{l}{a=\frac{5+7}{2} \text { and } a=\frac{5-7}{2}} \\\\ {a=\frac{12}{2} \text { and } a=\frac{-2}{2}}\end{array}$

We have asked negative solution. So a = -1

Thus the negative solution is -1

6 0

3 years ago

F(X)=2x^2 +1 find and simplify:: if f(a) =19 find a.<br> Isn't a just 19??

liberstina [14]

$2a^2+1=19\\
2a^2=18\\
a^2=9\\
a=-3 \vee a=3$

5 0

3 years ago

A police officer investigating an accident finds a skid mark of 115 ft in length. How fast was the car going when the driver app

Dominik [7]

The question doesn't provide enough information to get an accurate answer. Please provide more information or provide acceptable assumptions.

5 0

3 years ago

If the cost of a dress is $75.00 and

11Alexandr11 [23.1K]

Answer:

80%

Step-by-step explanation:

Original price =$75.00

Sale price =$60.00

The percentage discount can be calculated by dividing the sale price by the original price multiplied by 100%.

So % discount = $60.00/$75.00 x 100%

0.8 x 100%

80%

Janelle got the dress on a discount of 80%.

This is so because she got the dress for a price less than the original price

6 0

2 years ago

In 10⁵, the number 10 is the?

xxMikexx [17]

Answer:

The number 10 is the base

8 0

3 years ago