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2 years ago

A triangle has an area of 12 cm² and a height of 12 cm what is the base of the triangle

Mathematics

1 answer:

balu736 [363]2 years ago

5 0

1 cm is the base of the triangle

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Y varies directly as x. Y=42 when x=6. Find the value of y when x =15.

pentagon [3]

Answer:

y=120

Step-by-step explanation:

Y varies directly as x is written as

$y \alpha x$

introducing a constant

y=kx

from the question, when y=48, x=6

substitute it in the formula

48=6k

making k the subject by dividing through by 6

$\frac{48}{6} = \frac{6k}{6}$

k=48/6

k=8

put the value of k in the expression y=kx

y=8x

from the question,the value of y when x=15 is given by

y=8×15

y=120.

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2 years ago

Find the equation of the circle that satisfies the given conditions. Radius 2 and center (4, -7)?

podryga [215]

$The\ equation\ of\ the\ circle:\\\\(x-a)^2+(y-b)^2=r^2\\\\where\\\\center:(a;\ b)\\\\radius:r$

$Center:(4;-7);\ radius:r=2\\\\(x-4)^2+(y+7)^2=2^2\\\\(x-4)^2+(y+7)^2=4$

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3 years ago

Simplify by distributing: 3(x + 4)

larisa86 [58]

Answer:

3x+12

Step-by-step explanation:

distribute

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2 years ago

PLEASE HELP WILL GIVE TWENTY POINTS Which is the best approximation for the measure of angle ABC?

Shkiper50 [21]

Cos(x) = BC/AB = 10.5/20 = 0.525 ⇒ x = 58.3°

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2 years ago

Use the simple interest formula to find the interest earned and the ending balance. I = Prt

Katena32 [7]

Answer:

$72.90 is the interest earned

Step-by-step explanation:

The appropriate formula is i = prt, where r is the annual interest rate expressed as a decimal fraction.

Here, i = ($270)(0.09)(3 yr) = $72.90 is the interest earned

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2 years ago

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