2 years ago

II.) Simplify the following by applying the laws of indices.

Mathematics

1 answer:

Alik [6]2 years ago

8 0

S I took a test and got it right

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I buy T stamps at Q cents each, S stamps at R cents each, and give the post-office clerk one dollar. If P = 8, Q = 7, R = 5, S =

kondor19780726 [428]

Answer:

4 it's na answer the answer is 4

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If 25% of a number is 12. What is 75% of the number

KIM [24]

Answer:

=900

Step-by-step explanation:

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Find the value of x in each of the given figures.

Kaylis [27]

Answer:

Step-by-step explanation:

1) Given figure is a parallelogram

Area = 144 cm²

base * altitude = 144

16 * x = 144

x =144/16

x = 9 cm

2)2) Trapezium

Area = $\frac{a+b}{2}*h$ ; {a and b are parallel sides of trapezium}

( 37 +27 /2) * x = 480 cm²

64/2 * h = 480

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8 0

3 years ago

N/4 < -1 on a number line<br> -10x>-100 on a number line <br> 5x>20 on a number line

blsea [12.9K]

N/4 < -1 — we can multiply both sides with 4, so we dont have to deal with fractions.

N < -4

So, our N goes left from -4 on a number line.

-10x<-100 — divide both sides by 10
-x < -10
x > 10

X is from 10 rightwards.

5x>20 — divide both sides by 5
x > 4

X is rightwards from 4.

4 0

2 years ago

The following picture is a square pyramid where DE=8 cm and m∠ADE=60°.

mr_godi [17]

Answer:

131 cm

Step-by-step explanation:

formula for surface area of pyramid is

S = (1/3)Bh

but the base ia a square, so B = $x^{2}$

S = (1/3) $x^{2} h$

the pic shows h = 8

but we don't know x

do SohCahToa

sin60 = x/8

x = 8sin60

x = 6.92820323 or 7

plug in numbers

S = (1/3) $7^{2}$ 8

S = 392/3

S = 130.6666667 or 131 cm

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2 years ago