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dybincka [34]
3 years ago
7

I don’t know how to make a rule:(

Mathematics
1 answer:
Yuri [45]3 years ago
8 0

Answer:

*assuming you know the concept of proportionality*

since L is directly proportional to T, an increase in L will result in an increase in T

so the solution of the first part is increases

in part 2, y is inversely proportional to x

which means that an increase in y will result in a decrease in x and vice-versa

So the answer of the second part is decreases

in part 3, since x is directly proportional to y, an increase in x will result in an increase in y

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The area of a rectangle is 99 square inches. What is the new area of the rectangle if the height were five times long and the ba
garri49 [273]

Answer:

330 square inches

Step-by-step explanation:

99 x 5 =495

495 x 2/3 =330

8 0
3 years ago
Could someone help me understand how to solve this?
monitta

Answer:

Amount in 4% account: $550

Step-by-step explanation:

Use simple interest formula I=P\cdot r\cdot t, where

I = interest

P = principal

r = rate (as decimal)

t = time.

<u>4% account:</u>

P_1=x\\ \\r_1=0.04\\ \\t_1=1,

then

I_1=x\cdot 0.04\cdot 1=0.04x

<u>5% account:</u>

P_2=1,500-x\\ \\r_2=0.05\\ \\t_2=1,

then

I_2=(1,500-x)\cdot 0.05\cdot 1=0.05(1,500-x)

You have earned $69.50 in total, so

I_1+I_2=69.50\\ \\0.04x+0.05(1,500-x)=69.50\\ \\4x+5(1,500-x)=6,950\\ \\4x+7,500-5x=6,950\\ \\4x-5x=6,950-7,500\\ \\-x=-550\\ \\x=550\\ \\1,500-x=1,500-550=950

Amount in 4% account: $550

Amount in 5% account: $950

8 0
3 years ago
Please help!!...............................
Airida [17]
B. you have to be ready to multiply all the numbers to get your answer.
3 0
3 years ago
HELPP ME PLEASEEE!!<br> explain your thinking on who is correct
sashaice [31]

Answer:

Both

Step-by-step explanation:

They will both give you the same answer.

-13-5 = -18

-13 + -5 = -18

6 0
3 years ago
what is the domain of the function: {(1, 3); (3, 5); (5, 7); (7, 9)}? a. {1, 3, 5, 7, 9} b. {1, 3, 5, 7} c. {1, 9} d. {3, 5, 7,
Papessa [141]
B. 1, 3, 5, and 7 are x values. Domain is the x value.
6 0
3 years ago
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