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Solve the following equation: x^2 - 11x + 18 = 0

Use the factorisation method.

Step 1: Rewrite (x + __ )(x + __ ) = 0

Step 2: We need to fill in the blanks. The numbers we require are -2 and -9.

Step 3: We need the values of x, so t...

Answered by Tutor54985 D. • Maths tutor

17713 Views

Present Indicative Tense (Presente Indicativo): regular verbs of the three conjugations (-are, -ere, -ire and verbs in -isc-)

In Italian, the present indicative tense works much like the present tense in English. You first need to remember that Italian infinitives end in one of three ways (-ARE, -ERE, -IRE) and that are conjugat...

Answered by Nadia P. • Italian tutor

7490 Views

Give the pH of an alkaline solution

pH 8-14 (anything above pH 7 can be seen as alkaline)

Answered by Jodie B. • Chemistry tutor

2937 Views

Name two types of effectors in the body, and the response that effector makes

Muscle - it contracts
Gland - it secretes hormones

Answered by Jodie B. • Biology tutor

28028 Views

Let r and s be integers. Then ( 6^(r+s) x 12^(r-s) ) / ( 8^(r) x 9^(r+2s) ) is an integer when: (a) r+s <= 0, (b) s <= 0, (c) r <= 0, (d) r >= s.

First of all, an integer is a whole number, i.e. a not a fractional number, that can be positive, negative or zero. To find the range of values r and s for which the above fraction is an integer we can st...

Answered by Nadia P. • MAT tutor

15462 Views