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3 years ago

Evaluate (25−10)+(15÷3)

Mathematics

2 answers:

marishachu [46]3 years ago

6 0

Not a hundred % sure but I got 20

Artyom0805 [142]3 years ago

3 0

The final answer is 20.

Here are the steps I used.

1. Reduce 25 - 10 to 15 ( 15 + 15 divided by 3)

2. Simplify 15 divided by 3 to 5 ( 15 + 5)

3. Now from step 2 ( 15 + 5 = 20 so that is your final answer :) )

Hope this helps.

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Answer:

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3 years ago

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valentinak56 [21]

Answer:

$\dfrac{3x+4}{2x-2}$

Step-by-step explanation:

Invert and multiply the way you would any fraction division problem. Then cancel common factors from numerator and denominator.

$\displaystyle\frac{\left(\frac{4x^2+2x}{x^2+x-2}\right)}{\left(\frac{8x^2+4x}{3x^2+10x+8}\right)}=\frac{4x^2+2x}{x^2+x-2}\cdot\frac{3x^2+10x+8}{8x^2+4x}\\\\=\frac{2x(2x+1)(3x+4)(x+2)}{4x(2x+1)(x-1)(x+2)}=\frac{3x+4}{2(x-1)}\\\\=\frac{3x+4}{2x-2}$

4 0

3 years ago

Multiply a number n by 5, and then add 3 to product

joja [24]

Answer:

5n+3

Step-by-step explanation:

4 0

3 years ago

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givi [52]

Answer:

Athena = 10,265 km

Vesta = 102,650 km

Juno = 102,650 km

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Step-by-step explanation:

Athena = 20,530 / 2 = 10,256

From there, you can work out the rest by multiplying accordingly.

Hope this helps and made sense! :)

6 0

3 years ago

You measure the weight of 38 bags of nuts, and find they have a mean weight of 78 ounces. Assume the population standard deviati

Ket [755]

Answer: The maximal margin of error is 4.822.

Step-by-step explanation:

Since we have given that

Number of bags = 38

Sample mean = 78 ounces

Standard deviation = 14.5 ounces

At 96% confidence interval for the true population mean bags of nut weight.

So, z = 2.05

As we know that formula for "Margin of error":

$z\times \dfrac{\sigma}{\sqrt{n}}\\\\=2.05\times \dfrac{14.5}{\sqrt{38}}\\\\=4.822$

Hence, the maximal margin of error is 4.822.

8 0

3 years ago