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3 years ago

HELPPPPPPP ITS FOR MY STUDY GUIDE

Mathematics

1 answer:

RoseWind [281]3 years ago

7 0

Answer:The answer is A If you wanna make sure just search up those coordinates and it should be right

Step-by-step explanation:

You might be interested in

The 10th, 4th and 1st term of an A.P are three consecutive find the common ratio of the G.P and the sum of the 6th term, taking

valina [46]

Answer:

S_6 = 252

Step-by-step explanation:

We are told that the 10th, 4th and 1st term of an A.P are three consecutive terms of a G.P.

Now,formula for nth term of an AP is;

a_n = a + (n - 1)d

Thus;

a_10 = a + (10 - 1)d

a_10 = a + 9d

Also;

a_4 = a + (4 - 1)d

a_4 = a + 3d

First term is a.

Thus, since they are consecutive terms of a G.P, it means that;

(a + 9d)/(a + 3d) = (a + 3d)/a

Cross multiply to get;

a(a + 9d) = (a + 3d)(a + 3d)

a² + 9ad = a² + 6ad + 9d²

a² will cancel out to give;

9ad - 6ad = 9d²

3ad = 9d²

Divide both sides by 3d to get;

a = 3d

We are told that the first term is 4.

Thus, 4 = 3d

d = 4/3

We saw earlier that ratio of the GP is (a + 3d)/a

Thus; r = (4 + 3(4/3))/4 = 8/4 = 2

Sum of n terms of a G.P is given by;

S_n = a(rⁿ - 1)/(r - 1)

S_6 = 4(2^(6) - 1)/(2 - 1)

S_6 = 252

8 0

3 years ago

HEEEEELLLPPPPPPP!!!!!!!!!!!!!

ziro4ka [17]

Answer:

E. b + u = 21

Step-by-step explanation:

b = (bicycles)

u = (unicycles)

The Question gives you the answer.

" the number of bicycles plus the number of unicycles is 21"

*put as an equation*

b + u = 21

<3 Enjoy,

Dea

3 0

3 years ago

Describe in words the region of double-struck R3 represented by the equation: x2 + z2 ≤ 36.

Oksi-84 [34.3K]

Answer:

Step-by-step explanation:

Given that:

$x^2 + z^2 \leq 36$

if we assume that x is zero, then $z^2 = 36$ , $z = \pm \sqrt{36}$ $z = \pm 6$ i.e the radius of the circle goes from -6 to +6, Similarly, if we assume that z is zero, then $x^2 = \pm 36$ , $x = \pm \sqrt{36}$ , $x = \pm 6$ . This implies that $x^2 + z^2$ describes the circle with radius 6