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1 year ago

Find x and y. pls pls help

Mathematics

1 answer:

Anna [14]1 year ago

7 0

Answer:

x = 65 , y = 64

Step-by-step explanation:

y - 16 and 2y + 4 are same- side interior angles and sum to 180° , that is

y - 16 + 2y + 4 = 180

3y - 12 = 180 ( add 12 to both sides )

3y = 192 ( divide both sides by 3 )

y = 64

then

2y + 4 = 2(64) + 4 = 128 + 4 = 132

the exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

2y + 4 is an exterior angle of the triangle , then

x + 67 = 132 ( subtract 67 from both sides )

x = 65

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AB formed by (-3, 8) and (3, 2) and CD formed by (7.1) and (5, -1). Are these

Svetradugi [14.3K]

Answer:

Unknown

Step-by-step explanation:

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8 0

2 years ago

A quadratic equation is shown below: 25x2 + 10x + 1 = 0 Part A: Describe the solution(s) to the equation by just determining the

Anna [14]

A) The quadratic equation is:
$25x^2 + 10 x +1 =0$
which is of the form
$ax^2 + bx+c=0$
Let's analyze the radicand:
$b^2-4ac=(10)^2 - 4\cdot 25 \cdot 1=100-100 =0$
The radicand is zero: this means that the equation has 2 coincident solutions.

We can find them by using the formula:
$x= \frac{-b \pm \sqrt{b^2-4ac} }{2a}= \frac{-10 \pm 0}{2 \cdot 25}=-0.2$
So, the solution is x=-0.2 with multiplicity 2.

b) The equation is
$4x^2-4x+1=0$
Note that the radicand is zero again, as before:
$b^2-4ac=4^2 - 4\cdot 4 \cdot 1=16-16=0$
So we have two coincident solutions as before. We can find them using the same formula:
$x= \frac{-b \pm \sqrt{b^2-4ac} }{2a}= \frac{-(-4) \pm 0 }{2 \cdot 4}= \frac{4}{8}=0.5$
So, the solution is x=0.5 with multiplicity 2.

3 0

3 years ago

For the following sequence, state the common difference, identify which is the explicit form and which is the recursive form of

igor_vitrenko [27]

The explicit form of the sequence is an = 100n - 100

<h3>What is Recursive functions?</h3>

Given the recursive functions as;

an = an−1+100

Sequence: 0,100,200,300,…

first term (a) = -0

Common difference of the A.P.

(d) = 100- 0 = 100

The explicit form of the sequence is

an = a + (n-1)d

an = 0 + (n-1)(100)

an = 0 + 100n -100

an = 100n - 100

Hence the explicit form of the sequence is an = 100n - 100

Learn more on sequence here:

brainly.com/question/6561461

#SPJ1

8 0

2 years ago

2-2+5+1-3*55+12-33*98

VladimirAG [237]

Answer:

-3054

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3 0

3 years ago

NEED HELP WITH A MATH QUESTION WITH FINDING A SURFACE AREA OF A SQAURE PYRAMID

GalinKa [24]

ANSWER

$S.A = 125 {in}^{2}$

EXPLANATION

The total surface area of a square pyramid is the area of the 4 triangular faces plus the area of the square base.

This is given by the formula!

$S.A = 4 \times \frac{1}{2} bh + {l}^{2}$

From the diagram, the base is 5 inches and the height is 10 inches.

We substitute the values to get:

$S.A = 4 \times \frac{1}{2} \times 5 \times 10 + {5}^{2}$

This simplifies to;

$S.A = 100 + 25$

$S.A = 125 {in}^{2}$

3 0

3 years ago