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2 years ago

lol, i was doing just fine on this hw until this. Pleeze help! solve for d+2 > 6. I am offering twenty-five Points

Mathematics

1 answer:

expeople1 [14]2 years ago

4 0

Hello from MrBillDoesMath!

Answer:

d>4

Discussion:

I understand the question is asking us to solve for "d" in the inequality:

d + 2 > 6 => subtract 2 from both sides

d + 2 -2 > 6 - 2 => as 2 - 2 = 0

d > 6 -2 = 4

If I have misunderstood the question, please tell me.

Thank you,

MrB

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Joey and Armando live on the same st as the park. The park is 9/10 mile from Joey's home. Joey leaves home and walks to Armando'

AleksandrR [38]

Let's start by assuming Armando's house is between Joey's and the park.

Let $x$ be the distance Joey walked to Armando's house.

<span>The park is 9/10 mile from Joey's home. Joey leaves home and walks to Armando's home. Then Joey and Armando walk 3/5 mile to the park.

</span> $\dfrac{9}{10} = x + \dfrac{3}{5}$

$x = \dfrac{9}{10} - \dfrac{3}{5} = \dfrac{9}{10} -\dfrac{6}{10} = \dfrac{3}{10}$

That's probably the answer they're looking for. But what if the park is between Joey and Armando's houses or Joey is between the park and Armando? (The latter isn't really possible with the given distances.)

Let $a, b, c$ be the distances between three collinear points like we have here. Our equation is really a few equations in one, something like

$\pm a \pm b = \pm c$

Let's get rid of the plus/minuses. Squaring,

$a^2 + b^2\pm 2ab = c^2$

$\pm 2ab = c^2-a^2-b^2$

$4a^2b^2 = (c^2-a^2-b^2)^2$

For us, that's a quadratic equation for $c^2$

$4(9/10)^2(3/5)^2= (c^2-(9/10)^2 - (3/5)^2)^2$

I'll skip right to the solutions,

$c^2=\dfrac{9}{100} \textrm{ or } c^2=\dfrac{9}{4}$

$c=\dfrac{3}{10} \textrm{ or } c=\dfrac{3}{2}$

We could have gotten the 3/2 just by adding 9/10+3/5 but this was more fun.

6 0

3 years ago

Is 300 cm or 30 meters larger

notka56 [123]

I think it's 30 meters
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3 years ago

Which expression is equivalent to 4 7/8 ÷ 4 1/4

cupoosta [38]

Answer:

Improper fraction: 39/34

Proper fraction: 1 5/34

Decimal: 1.147 (rounded to the nearest thousandths).

Step-by-step explanation:

Solve each expression given, if it has the same result, then the expressions is equivalent. Solve the given expression:

4 7/8 ÷ 4 1/4

First, change all fractions into improper fractions:

4 7/8 = (4 * 8)/8 + 7/8 = 32/8 + 7/8 = 39/8

4 1/4 = (4 * 4)/4 + 1/4 = 16/4 + 1/4 = 17/4

Next, find common denominators. Note that what you do to the denominator, you must do the numerator:

(17/4) * (2/2) = (34/8)

39/8 ÷ 17/4

Solve. First, change the division sign into multiplication, and then flip the second fraction:

39/8 ÷ 17/4 = 39/8 x 4/17

Multiply straight across:

39/8 x 4/17 = (39 x 4)/(8 x 17) = 156/136 = 39/34 (simplified), or 1 5/34.

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2 years ago

Simplify the expression 467,000×0.0002 using scientific notation and expression your answer in scientific in notation

elixir [45]

Answer:9.34×10^1

Step-by-step explanation:

To simplify 467000×0.0002 in scientific notation

We get

467000×0.0002

=93.4

=9.34×10^1

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2 years ago

Can u plz help me? plz think ok<br> ps: Wetzucchini i know u try to hack me and put a vires on me

inessss [21]

Answer:

umm...

Step-by-step explanation:

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2 years ago