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mixas84 [53]
3 years ago
14

Triangles ABC and DEF are right triangles, as shown. A ABC is similar to A DEF

Mathematics
1 answer:
Fiesta28 [93]3 years ago
4 0

Answer:

a/c and d/e are equal to cos(b)

Step-by-step explanation:

i used substitute and solve at first, but that didnt work too well so i moved on to the guess and check method.

my guess is a/c and d/e are equal to cos(b), can anyone check this?

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The temperature falls from 0 degrees to Negative 12 and one-fourth degrees in 3 and one-half hours. Which expression finds the c
ANEK [815]

Answer:

The expression used to find the change in temperature per hour is Algebraic expression

Thus per hour; the temperature falls at the rate of - 3\dfrac{1}{2}^0

Step-by-step explanation:

A temperature falls from 0 to  - 12\dfrac{1}{4}     in     3\dfrac{1}{2} \ hours

Which expression finds the change in temperature per hour.

From the above given information;

The initial temperature is 0

The final temperature is  - 12\dfrac{1}{4}  

The change in temperature is \Delta T = T_2  -  T_1

\Delta  T = -12\dfrac{1}{4} -0

\Delta T = -12.25

Thus;

-12.25 ° = 3.5 hours

To find the change in x°   per hour; we have;

x°            = 1 hour

The expression used to find the change in temperature per hour is Algebraic expression

From above if we cross multiply ; we have;

(- 12.25° × 1 hour) = (x° × 3.5 hour)

Divide both sides by 3.5 hours; we have:

\dfrac{-12.25^0*1 }{3.5}=\dfrac{ x^0 *3.5}{3.5}

x° =  - 3.5

x° = - 3\dfrac{1}{2}

Thus per hour; the temperature falls at the rate of - 3\dfrac{1}{2}^0

8 0
3 years ago
Which shows the expression below in simplified form?
statuscvo [17]

Answer:

B. 9x10^4

Step-by-step explanation:

\frac{4.5 \times  {10}^{8} }{5 \times  {10}^{3} }  \\  = 0.9 \times  {10}^{8 - 3}  \\  = 0.9 \times  {10}^{5}  \\  = 9 \times  {10}^{4}

5 0
3 years ago
QGS-GAkhddsg/viewform?hr_submission=Chklovas 8. Gina has a summer job that pays $5 per hour. Which graph shows the 5 points rela
Hatshy [7]

Answer:

the graph should be of the line y=5x

Step-by-step explanation:

the x axis should be labeled hours and the y axis should be labeled amount earned or dollars

the coordinates on the graph should be

(1,5) (2,10) (3,15) (4,20) (5,25) (6,30)

I cannot see the answer choices but I hope this information helps you answer the question

3 0
2 years ago
Help me on this question
aivan3 [116]

Answer:

B

Step-by-step explanation:

If Sean wants to but both the muffin and cookie then this addition. 3 +m shows the correct expression. the answer is b

4 0
3 years ago
Kelvin's monthly allowance is $42 and Mike's monthly allowance is $63. How many times Mike's monthly allowance is Kelvin's month
earnstyle [38]
It is 1.5 times because $63 divided by $42 is $1.5.
I hope this is what you meant. 
3 0
3 years ago
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