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kvv77 [185]
3 years ago
14

Please help ASAP I’m very unsure on how to do these 2 questions please give answers for both :)

Mathematics
2 answers:
Temka [501]3 years ago
8 0

Answer:

1) Option 2

2) Option 1

Step-by-step explanation:

1) 3a-2b

<u><em>Where a = 3, b = 2</em></u>

=> 3(3)-2(2)

=> 9-4

=> 5

2) 5c+3d

<u><em>Where c = 4, d = -5</em></u>

=> 5(4) + 3(-5)

=> 20 - 15

=> 5

Orlov [11]3 years ago
3 0

Answers:

5, 5

Step-by-step explanation:

<u>Put a as 3 and b as 2 and evaluate:</u>

3(3) - 2(2)

9 - 4

= 5

<u>Put c as 4 and d as -5 and evaluate:</u>

5(4) + 3(-5)

20 - 15

= 5

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How do you to tell the difference between an ellipse, hyperbola, parabola, or circle if all are in standard form?
NeX [460]

Step-by-step explanation:

General form of a conic section is:

Ax² + Bxy + Cy² + Dx + Ey + F = 0

If B = 0:

Parabola: Either x² or y² term, but not both

Circle: x² and y² have the same coefficient

Ellipse: x² and y² have different positive coefficients

Hyperbola: x² and y² have different signs

Otherwise, look at the discriminant.

If B² − 4AC < 0, then the conic is an ellipse.

If B² − 4AC = 0, then the conic is a parabola.

If B² − 4AC > 0, then the conic is a hyperbola.

6 0
3 years ago
Seven less than the product of a number and 10 is 50
Veseljchak [2.6K]
<span>product of a number and 10: 10n
</span><span>Seven less than the product of a number and 10: 10n - 7
so
</span><span>Seven less than the product of a number and 10 is 50:</span>
10n - 7 = 50
----------------------------
if you need to find the number n then
10n - 7 = 50
10n = 57
    n = 57/10
    n = 5.7
5 0
3 years ago
Find the distance between the points (6,5√5) and (4,3√2).<br> 2, 2√2, 2√3
FromTheMoon [43]

Answer:

D=\sqrt{(147-30\sqrt{10}}

Step-by-step explanation:

Here we are required to find the distance between two coordinates. We will use the distance formula to find the distance

The distance formula is given as

D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Here we are given two coordinates as

(6,5\sqrt{5} ) , (4,3\sqrt{2} )

Substituting these values in the Distance formula given above we get

D=\sqrt{(6-4)^2+(5\sqrt{5} -3\sqrt{2}) ^2}

D=\sqrt{(2)^2+(5\sqrt{5})^2+(3\sqrt{2})^2-2*5\sqrt{5}*3\sqrt{2}}\\

D=\sqrt{4+125+18-2*15\sqrt{10}}\\D=\sqrt{147-30\sqrt{10}}\\

Hence this is our answer

6 0
3 years ago
The width of a piece of paper was 1/2. The area of the paper was 9/16. What was the length of the paper
liubo4ka [24]
1/2 x 9/8 = 9/16
So the length is 9/8
4 0
3 years ago
You have $6,500 to deposit. If you deposit the money in a savings account at your local bank, you will earn 1.45% annual interes
FinnZ [79.3K]
The amount earned from the local account must be greater than that of the online account.
Amount from local account = 6,500(1.0145)ⁿ
Amount from online account = 6,500(1.0225)ⁿ - 4x
Where n is the number of years and x is the number of ATM withdrawals.

6,500(1.0145)ⁿ > 6,500(1.0225)ⁿ - 4x
4x > 6,500[(1.0225)ⁿ - (1.0145)ⁿ]; n = 1
x > 13
The number of withdrawals must exceed 13.

The answer is C.
8 0
3 years ago
Read 2 more answers
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