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4 years ago

-3(4x+5) simplifies to Ax+b where

Mathematics

2 answers:

Ostrovityanka [42]4 years ago

4 0

Answer:

-12x - 15

Step-by-step explanation:

Luden [163]4 years ago

3 0

-12+-15.................

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Which came first the chicken or the egg ?

Hoochie [10]

Answer:

The egg

Step-by-step explanation:

Chickens are not mammals so they cuicks dont come first

pls mark brainliest answer

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2 years ago

What is the value of z so that -9 and 9 are both solutions of x^2+z=103?

Ira Lisetskai [31]

The answer is C.
x^2 + z = 103x^2 + 22 = 103*Subtract both sides by 22*x^2 + 22 - 22 = 103 - 22x^2 = 81*square root both sides to find x*√x^2 = <span>√81</span>
<span>x = +- 9</span>

8 0

3 years ago

Max's Market sells 6 eggs for £2.22. Groceries Galore sells 8 eggs for £2.96. Fancy Foodstuffs sells 12 eggs for £4.32.

lora16 [44]

Answer:

Fancy Foodstuffs price per egg is cheaper at 36 cents.

Step-by-step explanation:

2.22/6 = .37

2.96/8 = .37

4.32/12= .36

8 0

3 years ago

Read 2 more answers

Use induction to show that 12 + 22 + 32 + ... + n2 = n(n+1)(2n+1)/6, for all n > 1.

dlinn [17]

Answer with Step-by-step explanation:

Let $P(n)=1^2+2^2+3^2+.....+n^2=\frac{n(n+1)(2n+1)}{6}$

Substitute n=2

Then $P(2)=1+2^2=5$

$P(2)=\frac{2(2+1)(4+1)}{6}=5$

Hence, P(n) is true for n=2

Suppose that P(n) is true for n=k >1

$P(k)=1^2+2^2+3^2+...+k^2=\frac{k(k+1)(2k+1)}{6}$

Now, we shall prove that p(n) is true for n=k+1

$P(k+1)=1^2+2^2+3^2+...+k^2+(k+1)^2=\frac{(k+1)(k+2)(2k+3)}{6}$

LHS

$P(k+1)=1^2+2^2+3^2+.....+k^2+(k+1)^2$

Substitute the value of P(k)

$P(k+)=\frac{k(k+1)(2k+1)}{6}+(k+1)^2$

$P(k+1)=(k+1)(\frac{k(2k+1}{6})+k+1)$

$P(k+1)=(k+1)(\frac{2k^2+k+6k+6}{6})$

$P(k+1)=(k+1)(\frac{2k^2+7k+6}{6})$

$P(k+1)=(k+1)(\frac{2k^2+4k+3k+6}{6})$

$P(k+1)=\frac{(k+1)(k+2)(2k+3)}{6}$

LHS=RHS

Hence, P(n) is true for all n >1.

Hence, proved

4 0

3 years ago

Find the height of a square pyramid that has a volume of 8 cubic feet and a base length of 2 feet.

WARRIOR [948]

Step-by-step explanation:

Volume of square pyramid

= (Base length)² * (Height/3).

Therefore we have 8 = 2² * (h/3).

=> 8 = 4 * (h/3), h/3 = 2, h = 6.

Hence the height is 6 feet. (1)

6 0

3 years ago