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topjm [15]
3 years ago
9

Detailed answers appreciated: (7a -4) (2a -5)

Mathematics
2 answers:
igor_vitrenko [27]3 years ago
5 0
Expand the expression?

Perform indicated multiplication:

7a(2a)+7a(-5)-4(2a)-4(-5)

14a^2-35a-8a+20  combine like terms, ie (-35a-8a)=-43a

14a^2-43a+20
lana66690 [7]3 years ago
5 0
1. Us the FOIL method: (a + b)(c + d) = ac + ad + bc + bd:
14a^2 - 35a - 8a + 20
2. Collect like terms:
14a^2 + (-35a - 8a) + 20
3. Simplify:
14a^2 - 43a + 20
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For every 6 children there is 1 adult so if there’s 66 children how many adults are there?
tresset_1 [31]

Answer:

11

Step-by-step explanation:

6 : 1

66 : X

X/66 = 1/6

X = 11

4 0
3 years ago
How many Times greater is 9 x 10^-4 than 3 x 10^-7
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here's the solution :

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3 years ago
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What is the sum of all the angles that are labeled?
Ilia_Sergeevich [38]

Answer:

61 + 142 + 44 = 247˚

Step-by-step explanation:

Just add haha

4 0
3 years ago
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Ken buys some fruit.
Kitty [74]

Answer:

6 oranges

Step-by-step explanation:

4x125g= 500g

2x170g= 340g

3x135g= 405g

500+340+405= 1,245g

1.785kg= xg

1.785x1,000= 1,785g

1,785-1,245g= 540g

each orange weighs 90g

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Ken buys 6 oranges.

3 0
3 years ago
Your friend, Isabel, has a credit card with an APR of 19.9%! How many dollars would she pay as a finance charge for just 1 month
Mazyrski [523]

Answer:

$16.583

Step-by-step explanation:

Given :Your friend, Isabel, has a credit card with an APR of 19.9%!

To Find : How many dollars would she pay as a finance charge for just 1 month on a $1000 charge?

Solution:

We are given that finance charge for just 1 month on a $1000 charge.

So, Finance charge = \frac{19.9\% \times 1000}{12}

Finance charge = \frac{\frac{199}{1000}\times 1000}{12}

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Finance charge = 16.583

Hence she pay $16.583 as a finance charge for just 1 month on a $1000 charge.

6 0
4 years ago
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