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3 years ago

6. The temperature of an iron block decreases from 85°C to 25°C. If the mass for

Mathematics

1 answer:

Fittoniya [83]3 years ago

4 0

Answer:

8280 cal

Step-by-step explanation:

Q=mc(delta)T

Q=1200(0.115)(-60)

Q=8280 cal

I used 1200 g instead of 1.2 kg

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On a coordinate plane, a dashed straight line has a negative slope and goes through (0, 2) and (4, 0). Everything below and to t

yanalaym [24]

Answer:

Option C.

Step-by-step explanation:

A dashed straight line has a negative slope and goes through (0, 2) and (4, 0).

The given inequality is

$y$

We need find the point which is a solution to the given linear inequality.

Check the given inequality for point (2, 3).

$3$

This statement is false. Option 1 is incorrect.

Check the given inequality for point (2, 1).

$1$

This statement is false. Option 2 is incorrect.

Check the given inequality for point (3, -2).

$-2$

This statement is false. Option 3 is correct.

Check the given inequality for point (-1,3).

$3$

This statement is false. Option 4 is incorrect.

Therefore, the correct option is C.

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3 years ago

If a triangle has angles 42 and 35 degrees , what is the measure of the third angle ?

alekssr [168]

Answer:

Triangle = 180 Degrees, so 77.

Step-by-step explanation:

42+35+x=180

x = 77

7 0

3 years ago

A line contains the points (34, 12) and (32, 48) .

inessss [21]

Slope formula : y2 - y1 / x2 - x1

( 34 , 12 ) and ( 32 , 48 )

48 - 12 / 32 - 34

36 / - 2

slope = - 18

8 0

3 years ago

Read 2 more answers

Cole buys a laptop for 335. He makes a $50 down payment and pays the rest in 6 equal payments,p. What equation represents the re

victus00 [196]

Answer:

The equation representing the relationships between the cost of laptop and Cole's payment is $50+6p=335$ .

Step-by-step explanation:

Given:

Cost of laptop = 335

Down payments = $50

Number of equal payments = $6p$

We need to write the equation form the relationships between the cost of laptop and cole's payment.

Solution:

Now we can say that;

Cost of laptop is equal to sum of Down payments and Number of equal payments.

framing in equation form we get;

$50+6p=335$

Hence The equation representing the relationships between the cost of laptop and Cole's payment is $50+6p=335$ .

6 0

3 years ago

If f(x) = 4х2 +1 and g(x) = х2 – 5, find (f-g)(x).

liq [111]

Answer:

The answer is B

Step-by-step explanation:

f(x) = 4x² + 1

g(x) = x² - 5

(f-g)(x) = 4x² + 1 - (x²-5)

= 4x² + 1 - x² + 5

= 3x² + 6

7 0

3 years ago