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3 years ago

Please Help ! Answer the questions about Figure A and Figure B below.

Mathematics

1 answer:

Flauer [41]3 years ago

8 0

Answer:yes

Step-by-step explanation:

Each of their corners are at a 90* angle

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How many solutions does the following system have? 2x- 4y = 11 -2x + 4y = -10

rosijanka [135]

Answer:

This system has no solution

Step-by-step explanation:

-(11+4y)+4y=-10

no solution

6 0

3 years ago

Read 2 more answers

3. B ge 18cm A 60° 20cm с Calculate the size of angle ABC.

uysha [10]

Answer:

Step-by-step explanation:

8 0

3 years ago

olga nikolaevna [1]

Answer:

Fraction of the original board left = $\frac{2}{15}$

Step-by-step explanation:

Let the length of the board is = l feet

Marty saws off $\frac{1}{5}$ of a wooden board.

Length of the board left = l - $(\frac{1}{5})l$

= $(\frac{4}{5})l$ feet

He saws off $\frac{3}{4}th$ of the remaining board,

Board left = $(\frac{4}{5})l-[(\frac{4}{5})l\times (\frac{3}{4})]$

= $\frac{4}{5}l-\frac{3}{5}l$

= $\frac{1}{5}l$ feet

He finally saws off $\frac{1}{3}$ rd of the remaining board.

Board left = $\frac{1}{5}l-[\frac{1}{5}\times \frac{1}{3}]l$

= $(\frac{1}{5}-\frac{1}{15})l$

= $\frac{2}{15}l$ feet

Fraction of the original board left = $\frac{\frac{2}{15}l}{l}$

= $\frac{2}{15}$

6 0

3 years ago

Please help (20 points)

Evgesh-ka [11]

$35.\\V=\dfrac{\pi r^2h}{3}\ \ \ \ |\cdot3\\\\3V=\pi r^2h\ \ \ \ |:\pi r^2\\\\\boxed{h=\dfrac{3V}{\pi r^2}}$

$36.\\V=150\ m^3\\r=5\ m\\h=?\\\\\text{substitute}\\\\h=\dfrac{3\cdot150}{\pi\cdot5^2}=\dfrac{450}{25\pi}=\dfrac{18}{\pi}\approx\dfrac{18}{3}=6\ m\\\\Answer:\ The\ height\ is\ greater\ than\ a\ radius.$

8 0

3 years ago

Expand 2x(5x - 2) help :(

weeeeeb [17]

Answer:

(2x • 5x) + (2x • -2)

Step-by-step explanation:

I think that's what you're looking for, you just distribute the 2x to both of the numbers in the parathesis

3 0

2 years ago