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3 years ago

What is the value of this expression when c= -4 and d = 10? 1/4(c3+d2)

Mathematics

1 answer:

babunello [35]3 years ago

8 0

Step-by-step explanation:

1/4(-4×3 + 10×2)

1/4(-12 + 20)

THERE ARE 2 WAYS YOU COULD SOLVE THIS!

1. 1/4( -12) + 1/4( 20) = -3 + 5 = 2

2. 1/4 ( -12+20) = 1/4(8) = 2

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Expan and simplify the following expression:<br> 3(2a + 3)(2a - 1) - 4 (a^2 - 7)

Mekhanik [1.2K]

= 3(4a^2 + 4a - 3) - 4a^2 + 28
= 12a^2 + 12a - 9 - 4a^2 + 28
= 8a^2 + 12a + 19
= 4a(2a + 3) + 19

3 0

3 years ago

The radius of the larger circle is 10 cm. The radius of the smaller circle is 5 cm. What is the approximate area of the shaded r

Fynjy0 [20]

100*3.14= 314

25*3.14=78.5

314-78.5=235.5

5 0

3 years ago

Read 2 more answers

A bowl contains 6 red balls, 4 blue balls, 3 white balls and 1 green ball. You pick two balls without replacement. a) What is th

Kay [80]

Answer:

3.5

Step-by-step explanation:

you want to add all of the balls together and then divide by 4 because that's how many color balls there are

7 0

3 years ago

to find the final cost of the shoes, the $15 coupon can be applied first and then the 20% discount, or the 20% discount can be a

guapka [62]

First apply 20% discount then applied $15 coupon combination gives better deal.

As given in the question,

Let final cost of the shoes be $100

First apply $15 coupon then applied 20% discount

100-15=$85

Now, 20% of 85= (20/100) × 85

=$17

Final price, 85 - 17 =$68

First apply 20% discount then applied $15 coupon

Now, 20% of 100= (20/100) × 100

=$20

100-20 = $80

Apply coupon $15

Final price, 80 - 15 =$65

Therefore, first apply 20% discount then applied $15 coupon combination gives better deal.

Learn more about discount here

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8 0

2 years ago

5c squared- d squared+3/2c - 4d...c= -1. d= -4

riadik2000 [5.3K]

For this case we have the following expression:

$5c ^ 2-d ^ 2 + \frac {3} {2} c-4d$

We must find the value of the expression when:

$c = -1\\d = -4$

Substituting we have:

$5 (-1) ^ 2 - (- 4) ^ 2 + \frac {3} {2} (- 1) -4 (-4) =\\5 (1) -16- \frac {3} {2} + 16 =\\5-16- \frac {3} {2} + 16 =\\-11- \frac {3} {2} + 16 =\\- \frac {25} {2} + 16 =\\\frac {-25 + 32} {2} =\\\frac {7} {2}$

Finally, the value of the expression is:

$\frac {7} {2}$

ANswer:

$\frac {7} {2}$

5 0

3 years ago