All categories

3 years ago

PLZZZZZZ I NEED HELP IM SO TIRED PLZZZZZZZZ

Mathematics

2 answers:

Nat2105 [25]3 years ago

7 0

Answer:

Step-by-step explanation:

I will say it's B I search it up

Otrada [13]3 years ago

4 0

Answer:

$0$

Step-by-step explanation:

$\frac{1}{2^3}\left(-32+8\right)-\frac{\left(-3\right)^3}{9}$

$\frac{1}{2^3}\left(-32+8\right)=-3$

$-3-\frac{\left(-3\right)^3}{9}$

$\frac{\left(-3\right)^3}{9}=-3$

$-3-\left(-3\right)$

* $-\left(-a\right)=a$

$-3+3$

$0$

You might be interested in

If the perimeter is 112,the width is 6times to get the length.what is the length?and the width?solve for an area

Romashka [77]

Answer:

The length of rectangle is 8 unit

The width of rectangle is 48 unit

The Area of rectangle is 384 unit²

Step-by-step explanation:

Given as :

The perimeter of rectangle = P = 112 unit

The width is 6 times the length

Let The length of rectangle = L unit

Let The width of rectangle = W unit

So, W = 6 × L .........1

Let The Area of rectangle = A unit²

<u>Now, According to question </u>

∵ Perimeter of rectangle = 2 × Length + 2 × Breadth

Or, P = 2 × L + 2 × W

Or, 112 = 2 × L + 2 × 6 × L (from eq 1 )

Or, 112 = 2 × L + 12 × L

Or, 112 = 14 L

∴ L = $\dfrac{112}{14}$

i.e L = 8

So, The length of rectangle = L = 8 unit

Put the value of L into eq 1

∵ W = 6 × L

So, W = 6 × 8

i.e W = 48

So, The width of rectangle = W = 48 unit

<u>Again</u>

∵ The Area of rectangle = (Length × Width) unit²

Or, A = L× W

Or, A = 8 × 48

i.e A = 384 unit²

So, The Area of rectangle = A = 384 unit²

Hence , The length of rectangle is 8 unit

The width of rectangle is 48 unit

The Area of rectangle is 384 unit² Answer

7 0

3 years ago

Use the diagram of trusses for a railroad bridge.

alexandr402 [8]

You should take off E and add C and D because perpenidcular bisector means not only does it form a right angle to the line, it also bisects it, or cuts it into 2 equal portions. Also, If you look at triangles BED and BEF, they are congruent as both have right angles and equal sides BE, and DE = EF. So, BD = BF.

E is wrong because you don't know if line AC is perpendicular to DA, nor do you know if it's parallel to DF. And you don't know if DA is parallel to BE either. You ONLY know that BE is the perpendicular bisector of DF.

3 0

3 years ago

Circle Y is shown. Chords R T and S U intersect at point Z. Arc S R is 100 degrees and arc T U is 72 degrees. In circle Y, what

Yuliya22 [10]

Answer:

m∠SZT = 86°

Step-by-step explanation:

First we draw the diagram from the given information. Find attached the diagram.

when two chords intersect inside a circle, the measure of the angle formed is 1/2(the sum of the measure of the arcs intercepted each other).

From the above,

m∠SZT = 1/2 (Arc SR + arc TU)

Arc SR =100 degrees

Arc TU =72 degrees

m∠SZT = 1/2 (100° + 72°)

m∠SZT = 1/2 (172°)

m∠SZT = 86°

6 0

3 years ago

The second of two numbers is is 3 less than twice the first. Their sum is 42. Find the numbers.

Oksanka [162]

Answer:

firat is 27 second is 15

Step-by-step explanation:

15 multiplied by 2 is 30-3 is 27 and 27+15=42

7 0

3 years ago

Help me please thanks

kow [346]

Correct answer:
First reflect across the y-axis, then rotate 90 degrees clockwise about point K, then shift 3 units down.

6 0

3 years ago