Does geometry nation help a lot with geometry eoc? Or the textbook helped more?

Mathematics

1 answer:

Soloha48 [4]3 years ago

3 0

Answer: It depends on you if it seems easier for you, you should try both and see which one works better for you.

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What is (2+y)³ written out?

Aleksandr-060686 [28]

${ \left( 2+y \right) }^{ 3 }\\ \\ =\left( 2+y \right) \left( 2+y \right) \left( 2+y \right) \\ \\ =\left( 2+y \right) \left( 4+4y+{ y }^{ 2 } \right)$

$\\ \\ =2\left( 4+4y+{ y }^{ 2 } \right) +y\left( 4+4y+{ y }^{ 2 } \right) \\ \\ =8+8y+2{ y }^{ 2 }+4y+4{ y }^{ 2 }+{ y }^{ 3 }\\ \\ ={ y }^{ 3 }+6{ y }^{ 2 }+12y+8$

5 0

3 years ago

50 points!! Help needed

babunello [35]

Answer:

1) Enlargement

2) Reduction

Step-by-step explanation:

Question 1

200% means double, a factor 2

a) 2(2.5) = 5 inches

it's an enlargement

b) 2(original) = new/on the page

Question 2

a) 0.6(24) = 14.4 inches

Reduction

b) 0.6(original) = new/sketch

4 0

4 years ago

Read 2 more answers

Find values of x and y for which ABCD must be a parallelogram. The diagram is not drawn to scale.

Arturiano [62]

ANSWER
$x=4, y=8$

EXPLANATION

If ABCD is a parallelogram, then

line AB is parallel to line DC .

This means that,

$(x + 2) \degree$
and

$(2x - 2) \degree$
are alternating angles.

Alternate angles are congruent.

This implies that,

$2x - 2 = x + 2$

We group like terms to obtain,

$2x - x = 2 + 2$

This simplifies to,

$x = 4$

Also, if ABCD is a parallelogram then,

BC is parallel to AD. This means that,

$5y - 8 = y + 24$

We group like terms to get,

$5y - y = 24 + 8$

This simplifies to,

$4y = 32$

We divide both side by 4 to get,

$y = 8$