3 years ago

I really need help I don't know what to do I pay attention but don't understand

Mathematics

1 answer:

mrs_skeptik [129]3 years ago

6 0

It means like what number equals that number.Use multiplication to figure these out.

Example : 9,15. Factors for 9-9,1,3 .Factors for 15-1,15,3,5

Hope this helps !

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What is the value of y in the solution to the system of equations? One-thirdx + One-fourthy = 1 2x – 3y = –30 –8 –3 3 8

Neporo4naja [7]

Step-by-step explanation:

1/3x+1/40 =1 2x – 3y = –30 –8 –3 3 8

4 1

3 years ago

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(3.8 x 10 ^ -6) x (2.37 x 10 ^ -3) Enter the answer in science notification

Black_prince [1.1K]

Multiply the coefficients and the powers of 10 with each other:

$(3.8 \times 10^{-6}) \times (2.37 \times 10^{-3}) = (3.8\times2.37) \times (10^{-6} \times10^{-3})$

The numeric part simply yields

$3.8\times2.37 = 9.006$

As for the powers of 10, you have to add the exponents, using the rule

$a^b \times a^c = a^{b+c}$

So, we have

$10^{-6} \times10^{-3} = 10^{-6-3} = 10^{-9}$

So, the final answer is

$9.006\times 10^{-9}$

7 0

3 years ago

If you save $125 each week for one year, how much will you be able to save? There are 52 weeks in one year.

statuscvo [17]

Answer:

You will save 6,500

Explanation:

There are 52 weeks in one year multiply 52 times 125

5 0

3 years ago

Fine the sum of the series

lapo4ka [179]

Answer:

6825

Step-by-step explanation:

From the equation, the series is a geometric series, such that

a = 5

r = 4

n = 6

sum of a geometric series is a(r^n - 1)/(r - 1)

therefore,

sum of the series is 5 x (4^6 - 1) / (4 - 1)

= 5 x (4096 - 1) / 3

= 5 x 4095 / 3

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4 years ago

He can run 20 km in 95 minutes. He wants to know how many kilometers he will go if he runs at the same pace for 285 minutes.

DIA [1.3K]

Answer:

60km

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In 95 mins,he can run is 20km

In 1 min,he can run is 20/95

= 4/19in lowest

Now,

In 285 mins,he can run is=4/19*285

=4*15 in lowest

=60 km

3 0

3 years ago