All categories

3 years ago

Jane was paid $316 for 40 hours of work. Use compatible numbers to find about how much

Mathematics

1 answer:

laila [671]3 years ago

8 0

Answer:its so easy its 7.9

Step-by-step explanation:

316 divided by 40 is 7.9 lol

You might be interested in

Of new calculators tested,8 were defective and 42 passed inspection. What ratio compares the number of defective calculators to

sesenic [268]

The number of new calculators tested was 50 . . . 8 were bad and 42 were good.

The ratio of defective ones to new ones tested is 8:50 or 4:25 or 16% .

4 0

3 years ago

Read 2 more answers

josh flips a colored chip that is red on one side and black on the other a total of 20 times. what is the probability of the 21t

kiruha [24]

As long as the mass of the chip is evenly distributed on each side, whatever times you flip the chip,

The probability will always be 50%

3 0

3 years ago

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

4 years ago

Write an expression to 3(7 + 4g)

mafiozo [28]

Answer:

Step-by-step explanation:

21+12g

4 0

3 years ago

Polynormual sum of (x^2+9)+(-3x^2-11x+4)

amid [387]

Answer:

jddxhbjxbjkzkecnd

Step-by-step explanation:

xbsahcbszhjbcjhsbjcvh

5 0

3 years ago