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2 years ago

Find the value of x. A 7x + 10 с В 00 9x - 2 D

Mathematics

1 answer:

WARRIOR [948]2 years ago

5 0

Answer:

Step-by-step explanation:

AB = BD

so, 7x + 10 = 9x -2

or, 10 + 2 = 9x -7x

or, 12 = 2x

or, 6=x

Therefore, x=6

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Calculate the compound interest on an investment of R6500 at 7,5% per annum invested for 3 years

Lemur [1.5K]

Answer:

Compound interest = Rs 1,575 (Approx.)

Step-by-step explanation:

Given:

Amount invested = R.s 6,500

Rate of interest = 7.5% per annum

Number of year = 3 year

Find:

Amount of compound interest

Computation:

Compound interest = P[(1+r)ⁿ - 1]

Compound interest = 6500[(1+7.5%)³ - 1]

Compound interest = 6500[(1+0.075)³ - 1]

Compound interest = 6500[(1.075)³ - 1]

Compound interest = 6500[1.2423 - 1]

Compound interest = 6500[0.2423]

Compound interest = 1574.95

Compound interest = Rs 1,575 (Approx.)

3 0

3 years ago

I dont need it anymore

vova2212 [387]

Answer:

I'm sorry but what is the question?

Step-by-step explanation:

8 0

3 years ago

what percentage of discount should be in a watch costing Rs 270 Such that a custumer can by Rs 243 ?

castortr0y [4]

Answer:

10 percentage is the ans

Step-by-step explanation:

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5 0

2 years ago

Read 2 more answers

Help these problems lol alll of them

Ratling [72]

Answer:

1) 18

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7 0

2 years ago

What two numbers multiply and get 100 and add and get -29??

butalik [34]

X, y - the numbers

The numbers multiply to 100.
$xy=100$

The numbers add up to -29.
$x+y=-29 \\
y=-x-29$

Substitute -x-29 for y in the first equation:
$x(-x-29)=100 \\
-x^2-29x=100 \\
-x^2-29x-100=0 \\
-x^2-4x-25x-100=0 \\
-x(x+4)-25(x+4)=0 \\
(-x-25)(x+4)=0 \\
-x-25=0 \ \lor \ x+4=0 \\
x=-25 \ \lor \ x=-4 \\ \\
y=-x-29 \\
y=-(-25)-29 \ \lor \ y=-(-4)-29 \\
y=25-29 \ \lor \ y=4-29 \\
y=-4 \ \lor \ y=-25 \\ \\
(x,y)=(-25,-4) \hbox{ or } (x,y)=(-4,-25)$

The numbers are -4 and -25.

6 0

3 years ago

Read 2 more answers