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k0ka [10]
3 years ago
8

What is the value of y when y = 4x - 1 and x = 7/2

Mathematics
1 answer:
babunello [35]3 years ago
7 0
The answer to y= 4x- 1 is 13. substitute 7/2 at x and do 4 times 7/2 minus 1.
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4x25x27 associate property
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(4x25)x27
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7 0
2 years ago
Use the distributive property to remove the parentheses -5(2x-3w-6)
Strike441 [17]

Answer:

15w - 10x + 30.

Step-by-step explanation:

-5(2x - 3w - 6)

= (-5 * 2x) + (-5 * -3w) + (-5 * -6)

= -10x + 15w + 30

= 15w - 10x + 30.

Hope this helps!

7 0
3 years ago
Read 2 more answers
Which of the following shows the number 7.12 x 10^-3 written in standard form? Answer choices : 0.00712 : 0.0712 : 0.712 : 7,120
svet-max [94.6K]
<span>written in standard form
</span><span>
7.12 x 10^-3  = 0.00712

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7 0
3 years ago
A teacher is planning her reading for the next year. She has 5 novels 5 fiction 5 biographies and 3 plays. She wants to read 10
Vlad [161]

Answer:

1 and 10/8

Step-by-step explanation:

5+5=10/1

5+3=8

7 0
3 years ago
Diana has been saving nickels and dimes. She opened up her piggy bank and determined that it contained 48 coins worth $4.50. Det
tino4ka555 [31]

Answer:

6 Nickels

42 Dimes

Step-by-step explanation:

There are 48 coins in total (nickels and dimes). Let the number of nickels be "n" and the number of dimes be "d". So we can write:

n + d = 48

or

n = 48 - d

In dollars, we know nickels are worth 0.05 and dimes are worth 0.10. In total there is $4.50, so we can write:

0.05n + 0.10d = 4.50

Now replacing first equation [n = 48 - d] into 2nd, we get and equation in "d" and solve for d first:

0.05n + 0.10d = 4.50\\0.05(48-d) + 0.10d = 4.50\\2.4-0.05d+0.10d=4.50\\0.05d=4.50-2.4\\0.05d=2.1\\d=\frac{2.1}{0.05}=42

So, there are 42 dimes.

We know from before, n = 48 - d, so

n = 48 - 42 = 6

There are 6 nickels

3 0
3 years ago
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