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meriva
3 years ago
11

A+7.7= -7.1 Explain Hint: Equations and rational coefficient.

Mathematics
2 answers:
antiseptic1488 [7]3 years ago
7 0

Answer:

-14.8

Step-by-step explanation:

if you do add -14.8 to 7.7 your answer will be negative because if you see -14.8 has a higer absolute value.( keep the sign with the higher absolute value). Then when you add you will and get -7.1

il63 [147K]3 years ago
6 0

a+7.7=-7.1

-7.7 -7.1

_____________

a=-14.8

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Graph ​ y=−5/6x−4 ​.<br><br> Use the line tool and select two points on the line.
postnew [5]

Given equation is y=-\frac{5}{6} x-4

If we substitute x = 0, then, y = - 4.

So, (0, -4) is a point on the line.

If we substitute x = - 6, then y = 5 - 4 = 1.

So, (-6, 1) is another point on the line.

Joining (0, -4) and (-6, 1), we get the graph of the line.

5 0
3 years ago
Tom opens a bank account and makes an initial deposit of $500. The banker tells Tom that he is going to revive an annual rate of
daser333 [38]

So for this you will be using an exponential equation, which is y=ab^x with a=initial value, b=growth/decay, y = total balance, and x = # of years


In this case, a = 500, and since with this problem the initial value is growing, you will add 100% to 6% to get 106%, or 1.06. The equation will be formed as such: y=500(1.06)^x


With this problem, just plug in 15 into x and solve for y: y=500(1.06)^{15}\\ y=1198.28


In short, after 15 years Tom will have $1198.28 in his account.

5 0
3 years ago
Read 2 more answers
Only 4 b and c please
Artyom0805 [142]

Answer:

a) 2L + 2W = 42

b) L = 2W + 3

c) The system is :

2L + 2W = 42

L - 2W = 3

( add the two equations )

3L + (2w - 2w) = 45

3L = 45

L = 45/3

L = 15 ( Length )

L - 2W = 3

15 - 2W = 3

2W = 15 - 3

W = 12/2

W = 6

4 0
3 years ago
Please help and please give explanation
Yuki888 [10]

Answer:

cylinder surface area = 201.06in²

surface area of cone = 56.56in.²

Step-by-step explanation:

cylinder surface area formula = 2πrh + 2πr²

refer the pic

cone surface area formula = πr ( r + √h² + r² )

refer the sec pic

surface area of the solid

= ( 201.06 + 56.56 ) in.²

= 257.62in.²

= 258in.²

4 0
3 years ago
Answer to question one pleaseeeee help !!
Salsk061 [2.6K]
The answer is 19.6 cm^2


you should find the height of the triangle by heron formula: it will be 9.8

so the area is
(9.8 \times 4 ) \div 2= 39.2 \div 2 = 19.6



good luck
8 0
4 years ago
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