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2 years ago

The sum of two numbers is ten. One number is twenty less than four times the other. Find the numbers

Mathematics

1 answer:

Brut [27]2 years ago

5 0

Answer:

6 and 4

Step-by-step explanation:

Let one number be x.

Then another will be : 4x - 20

In accordance with the question;

x + 4x - 20 = 10

5x = 10 + 20

x = 30/5

= 6

x = 6

4x - 20 = 4×6 - 20 = 4

So, the numbers are 6 and 4.

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2 years ago

Any help? Much appreciated

natulia [17]

Answer:

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3 years ago

For what real values of does the quadratic 12x^2+kx+27=0 have nonreal roots

bija089 [108]

Answer:

k<±36

Step-by-step explanation:

Δ<0 (no real roots)

b²-4ac<0

k²-4x12x27<0

k²-1296<0

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3 0

3 years ago

Can someone please help me ASAP

deff fn [24]

Answer:

QR = 17 cm

Step-by-step explanation:

Δ RST is a 5- 12- 13 triangle with hypotenuse RT = 13 cm , then

TS = 5 cm and PT = 2 × 5 = 10 cm

So PS = 10 + 5 = 15 cm

PS is parallel to the vertical line from vertex Q and intersects the horizontal line projected from SR of length 20 - 12 = 8 cm

Using the right triangle formed calculate QR using Pythagoras' identity

QR² = 15² + 8² = 225 + 64 = 289 ( take square root of both sides )

QR = $\sqrt{289}$ = 17

3 0

3 years ago

2n > -20 Please help N=?

Wewaii [24]

Answer:

The value of x>-10

Step-by-step explanation:

The interval notation if you need it is (-10,♾)

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3 years ago

Read 2 more answers