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4 years ago

You drive your car for 4.5 hours

Mathematics

1 answer:

Elena L [17]4 years ago

7 0

Answer:

315 miles

Step-by-step explanation:

You have to multiply 4.5 hours times 70 miles

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Graph the image of this triangle after a dilation with a scale factor of 2 centered at the origin.

Svet_ta [14]

Answer:

Since, the coordinates of the given triangle are (0,0), (4,-4) and (-4,-2)

In the dilation by the scale factor k with centered at origin,

$(x,y)\rightarrow (kx,ky)$

Thus, If the dilation occurs by the scale factor of 2 with centered at origin,

New coordinates of the triangles are,

$(0,0)\rightarrow (2\times 0, 2\times 0)$

$(-4,4)\rightarrow (2\times -4, 2\times 4)$

$(-4,-2)\rightarrow (2\times -4, 2\times -2)$

Thus, the coordinates of new triangle are,

(0,0) ( -8, 8) and (-8,-4)

7 0

3 years ago

Find the value of each variable.

insens350 [35]

Step-by-step explanation:

11)

x= 5

${y}^{2} = 2 \times {5}^{2} \\ {y}^{2} = 50 \\ y = 5 \sqrt{2}$

12)

$\tan(30 ) = \frac{9}{y} \\ y = \frac{9}{ \tan(30) } = 9 \sqrt{3} \\ {x}^{2} = {9}^{2} + {(9 \sqrt{3} )}^{2} \\ {x}^{2} = 324 \\ x = 18$

13)

$\sin(60) = \frac{x}{22} \\ x = 11 \sqrt{3} \\ \cos(60) = \frac{y}{22} \\ y = 11$

14)

${16}^{2} = {x}^{2} + {y}^{2} \\ x = y \\ {16}^{2} = 2 {x}^{2} \\ x = 8 \sqrt{2} \\ y = 8 \sqrt{2}$

15)

$\tan(30) = \frac{x}{42} \\ x = 14 \sqrt{3} \\ \cos(30) = \frac{42}{y} \\ y = \frac{42}{ \cos(30) } \\ y = 28 \sqrt{3}$

16)

${(19 \sqrt{2}) }^{2} = {x}^{2} + {y}^{2} \\ x = y \\ 722 = 2 {x}^{2} \\ {x}^{2} = 361 \\ x = 19 \\ y = 19$

4 0

3 years ago

15 POINTS FOR 4 MATH QUESTIONS!

Softa [21]

Answer: i don't see the math problem?

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

SOMEONE PLEASE HELP ME.

Iteru [2.4K]

Answer:

a. exponential

b. neither

c. exponential

d. linear

Step-by-step explanation:

b is neither because it is a quadratic function which forms a parabola:)

7 0

3 years ago

Read 2 more answers

Look at the following expression:

user100 [1]

Answer: The last option, Stacy is incorrect because she should multiply 2 and 2 first and then subtract 4 from 12.

Step-by-step explanation:

We must follow the Order of Operations, also known as PEMDAS. See attached. Multiplication comes before subtraction, but Stacy subtracted 2 from 12 when she should have multiplied 2 by 2. This means the answer to your question is;

Stacy is incorrect because she should multiply 2 and 2 first and then subtract 4 from 12.

5 0

2 years ago