3 years ago

Please help!!! I have no idea why, but I can’t solve these problems!!!!

Mathematics

1 answer:

zaharov [31]3 years ago

5 0

I don’t understand

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I need help with these questions (see image). Please show workings.

shtirl [24]

Answer:

Inscribed angle is half of the intercepted arc.
Central angle is the same size as the intercepted arc.

As per above two statements we have:

y = 2*58° = 116°

and

z = 90°/2 = 45°

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3 years ago

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If you have $2500 how many board feet can you buy if the cost per board foot is $3.217

igor_vitrenko [27]

777 when rounded, or 777.1215418091389

3 0

3 years ago

Solve 2 1/2 divided by 5 1/3 = 8/x

ipn [44]

$2\frac { 1 }{ 2 } \quad divided\quad by\quad 5\frac { 1 }{ 3 } \\ \\ 2\frac { 1 }{ 2 } =2+\frac { 1 }{ 2 } =\frac { 5 }{ 2 } \\ \\ 5\frac { 1 }{ 3 } =5+\frac { 1 }{ 3 } =\frac { 15+1 }{ 3 } =\frac { 16 }{ 3 } \\ \\ \\ \frac { \frac { 5 }{ 2 } }{ \frac { 16 }{ 3 } }$

We're dividing fractions, so we will flip the one in the denominator upside down and we will multiply it with the numerator.

$\frac { \frac { 5 }{ 2 } }{ \frac { 16 }{ 3 } } \quad =\quad \frac { 5 }{ 2 } \cdot \frac { 3 }{ 16 } =\frac { 5\cdot 3 }{ 2\cdot 16 } =\frac { 15 }{ 32 }$

Let's equal this too 8/x

$\frac { 15 }{ 32 } =\frac { 8 }{ x }$

Cross multiply.

$8\cdot 32=15\cdot x\\ \\ 256=15x$

Divide both sides by 15.

$\frac { 256 }{ 15 } =\frac { 15x }{ 15 } \\ \\ \frac { 256 }{ 15 } =x$

4 0

3 years ago

-1 23 --- / ---- 4 24

Nastasia [14]

The answer is 0.00347222222

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3 years ago

The temperature in buffalo, New York, one Saturday was 68F. The temperature that following Monday was 80F. Write an equation tha

Ugo [173]

the answer is 80F-68F=x

x=12

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3 years ago

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