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max2010maxim [7]
3 years ago
11

Christine went shopping and bought each of her ten nephews a gift, either a video costing $14.95 or a cd costing $16.88. she spe

nd $151.43 on the gifts. how many videos and how many cds did she buy?
Mathematics
1 answer:
JulsSmile [24]3 years ago
7 0
She got 9 videos, and 1 cd.
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Cuanto me da como resultado
Likurg_2 [28]

Step-by-step explanation:

1) (-4)^2{\cdot}(-4)

We know that, a^x{\cdot}a^y=a^{x+y}

(-4)^2{\cdot}(-4)=(-4)^{2+1}\\\\=(-4)^3\\\\=64

2) (-2)^5{\cdot} (-2)^3

Again using above property,

(-2)^5{\cdot} (-2)^3=(-2)^8\\\\=256

3) 5^{-3}

We know that,

a^{-x}=\dfrac{1}{a^x}

So,

5^{-3}=\dfrac{1}{5^3}\\\\=\dfrac{1}{125}

4) 2.5^2=2.5\times 2.5\\\\=6.25

Hence, this is the required solution.

4 0
3 years ago
a. On a hiking trip Bob and his two friends hiked 15 miles the first day, 10 miles on the second and 7 miles on the third day. I
Len [333]

Answer: A. 14 miles each day.


Step-by-step explanation:


Day 1 : 15 miles

Day 2 : 10 miles

Day 3 : 7 miles


15 + 10 + 7 = 32 miles


60 - 32 = 28 miles


2 days left


28/2 = 14


14 is less than 18



7 0
3 years ago
Define the following propositions: .p: You drive over 65 miles per hour q You get a speeding ticket Translate the following Engl
sveticcg [70]

Answer:

a.p→¬q

b.¬p→¬q

c.q→¬p

Step-by-step explanation:

p:You drive over 65 miles per hour

¬p: <em>You do not drive over 65 miles per hour</em>

q:You get a speeding ticket

¬q:<em>You do not get a speeding ticket</em>

(a) You drive over 65 miles per hour, but <em>you do not get a speeding ticket</em>

the first sentence is p and because the consequence is the opposite of q then is no q

p→¬q

(b) If you do not drive over 65 miles per hour, then you will not get a speeding ticket

The first sentence is the opposite of p (¬p), and the second sentence is the opposite of q

¬p→¬q

(c) You get a speeding ticket, but you did not drive over 65 miles per hour.

The first one is q, and the second one is the opposite of p so

q→¬p

5 0
3 years ago
How do you multiply fractions
cricket20 [7]

The way to multiply fractions include:

  • The first step when multiplying fractions is simply to multiply the two numerators.
  • The second step is to multiply the two denominators.
  • Finally, simplify the new fractions

<h3>What are fractions?</h3>

It is important to note that fractions are part of whole numbers.

Fir example, to multiply 2/3 by 1/5 will be:

= 2/3 × 1/5

= 2/15

In conclusion, one has to multiply the numerator and them multiply the denominator.

Learn more about fractions on:

brainly.com/question/17220365

#SPJ1

7 0
1 year ago
3 (2x -1) = -2 (x +3)
Misha Larkins [42]

Answer:

x = 3/8 (but the fraction is negative.)

Decimal form if needed.

x = - 0.375

6 0
3 years ago
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