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Over [174]
4 years ago
10

Which of the following are true about dilations? Select all that apply.

Mathematics
1 answer:
GenaCL600 [577]4 years ago
3 0

Answer:

answer is c and d

Step-by-step explanation:

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Here is a circle, centre 0, and the tangent to the circle at the
denpristay [2]

Answer:

y = \dfrac{7}{24}x + \dfrac{625}{24}

Step-by-step explanation:

The radius drawn to the tangent at the point of tangency is perpendicular to the tangent.

The radius has endpoints (0, 0) and (-7, 24). The slope of the line containing the radius is

m_r = \dfrac{24 - 0}{-7 - 0}

m_r = -\dfrac{24}{7}

The slope of the tangent is the negative reciprocal of the slope of the radius.

m_t = \dfrac{7}{24}

The tangent contains point (-7, 24).

y = mx + b

24 = \dfrac{7}{24}(-7) + b

24 = -\dfrac{49}{24} + b

\dfrac{576}{24} + \dfrac{49}{24} = b

b = \dfrac{625}{24}

The equation of the tangent is

y = \dfrac{7}{24}x + \dfrac{625}{24}

3 0
3 years ago
Find the Perimeter of the<br> rectangle using the formula.<br> 4.2<br> 6.7<br> · Perimeter = 2L + 2W
Anon25 [30]

Answer:

21.8

Step-by-step explanation:

2(4.2)+2(6.7)=8.4+13.4=21.8

6 0
3 years ago
if Alex buys a 16 ounce bag of hot cheetos from ingles for $4.80. When Brad was at Dollar General he noticed they were on sale,
sveticcg [70]

Answer:

Brad got the best deal on hot cheetos.

Step-by-step explanation:

brad got a better deal because he got more product for a little more than hot Cheetos at Ingles.

4 0
3 years ago
Given 2x^2=-8, x is<br><br> A.-2<br> B. 2<br> C. 2i or -2i<br> D. 4i or -4i
Lera25 [3.4K]

Answer:

2i or -2i

Step-by-step explanation:

2x² = -8     First, clear x.

x² = -8/2    Solve

x² = -4        Now, eliminate the square of x by solving the square root of -4.

x = √-4

x = 2i or -2i Is an imaginary number.

4 0
3 years ago
Read 2 more answers
Suppose we have two thermometers. One thermometer is very precise but is delicate and heavy (X). We have another thermometer tha
Rudiy27
Yes you are correct because it really is precise and delicate
3 0
3 years ago
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