Find the square root of 121

Answer:

11

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Find the square root of 121

Answer:

11

Find the cube root of 343.

Answer:

7

Without using a calculator, estimate, by rounding each number correct to 1 significant figure,

19.78−9.8√10006.25

Answer: 10

Without using a calculator, estimate, by rounding each number correct to 1 significant figure,

1.78−0.89√9.25

Answer: 3

Write the number 0. 123463 in standard form.

Answer:

1.23463 x 10^-1

Write the number 239.054 in standard form.

Ans: 2.39054 x 10^2

Ans.

2.39054 x 10^2

Write 200 as a product of its prime factors.

Ans:

2 x 2 x 2 x 5 x 5

Simplify.

(32y5)53

Ans.8y3

Expand and simplify.

(5r -2s)(r + 3s)

(5r -2s)(r + 3s)

Ans5r2+13rs−6s2

Factorise completely.

30n2m4−6p3n5m

100x5y−x4

6n2m(5m3−p3n3)

x4(100xy−1)

Solve the equation

zz−2=105

z = 4

Text

Answer:

a = 110 degreesAns: x = 60

y = 40

Ans: x = 68 degrees

interior angle = 160 degrees

Ans: n = 15

Ans : 4140 degrees

Ans: a = 105 degrees

Ans :

170 cm^2

Ans:

BC = 10.5 cm

Find the volume.

Ans:

V = 64 x 5 = 320 cm^3

Ans:

v = 32.7 cm^3

Ans:

A = 2.47 cm^2

Work out 5/6 of 126kg.

A pair of shoes is on sale for $102.00. This is a reduction of 15% on the original price. What is its original price?

Find the area of the shaded region.

Expand and simplify.

(m -5n)(3m -2n)

(m -5n)(3m -2n)