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3 years ago

The temperature falls from -7°C to -20°C. What is the change in these temperatures?

Mathematics

1 answer:

mixer [17]3 years ago

5 0

Answer:

13 degrees Celsius

Step-by-step explanation:

To solve this question, you need to subract -20 from - 7.-7-(-20) is 13.

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The equation of a straight line is 2y = 3x + 4.

saul85 [17]

Answer:

a. 3/2.

b. (0, 2).

Step-by-step explanation:

a. 2y = 3x + 4 Divide through by 2:

y = 3/2 x + 2

Comparing this to the general form y = mx + c where m = the gradient we see that the gradient = 3/2.

b. When the line crosses the y-axis x = 0 so we have the equation:

2y = 3(0) + 4

2y = 4

y = 2.

So the required point is (0, 2).

8 0

4 years ago

You make 8.5% interest a year on your investment account!

likoan [24]

Answer:

$My~gain~in~that~year~was~\$176.5$

Step-by-step explanation:

$Greetings!$

$I'm~Isabelle~Williams~and~will~be~answering~your~question!$

$I~have~\$1,500 ~in ~my ~investment~ account.~ Rate~ of~ interest ~for~ a\\ ~year~ in~ my ~investment~account = 8.5\$$

$So,~ the~ amount~ of~ money~ I~ am ~making~ on ~my ~investment ~in ~a ~year:$

$=\$\frac{1500\times 8.5}{100}$

$=\$127.5$

______________________________________________________

$I ~owe~ \$ 1600 ~on~ a ~credit~ card .~ Rate ~of ~ interest ~a ~year ~on~ this~ credit\\ card ~debt, = 19 \%$

$So,~ the~ money~ I~ am~ paying~ in~ interest ~in~ a~ year~ on~ my~ card~is:$

$=\$\frac{1600\times 19}{100}$

$=\$304$

______________________________________________________

$Since, ~neither~ I ~withdraw ~money~ from ~my~ investment~ account ~ except~ the\\ ~interest~ nor~ I ~pay~ my~ whole ~credit~ card ~debt~ except ~the ~interest,~ so,~ my~ gain~\\ in~ that~ year:$

$= \$ (127.5 - 304)$

$=\$176.5$

$Hope~my~answer~helps!~Have~an~amazing~day~ahead!$

$-Isabelle~Williams$

5 0

3 years ago

In a different plan for area codes, the first digit could be any number from 2 through 5, the second digit was either 2, 3, 4,

GrogVix [38]

Answer:

Step-by-step explanation:

First digit 2,3,4,5 = 4 different digits.

Second digit 2,3,4,5 = 4 different digits.

Third digit = 1,2,3,6,7,9 = 6 different digits.

Total number of possibilities = 4*4*6 = 96

3 0

3 years ago

4 whols and 4/5 divided by 4/5

Andre45 [30]

Answer:

Step-by-step explanation:

4 $\frac{4}{5}$ ÷ $\frac{4}{5}$

= $\frac{24}{5}$ ÷ $\frac{4}{5}$

= $\frac{24}{5}$ * $\frac{5}{4}$

= $\frac{120}{20}$

= 6

5 0

3 years ago

Electrician cuts 136 ft. of cable. One piece is 16 ft. less than three times the length of the other piece. Find the length of e

Inessa05 [86]

One piece is 38 feet.

THe other is 98 feet.

8 0

3 years ago

Read 2 more answers