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stealth61 [152]
2 years ago
9

In a survey taken of 60 households, 40 households reported having a dog and 30 households reported having a cat. If half of all

households having a cat also have a dog, how many households reported have neither a dog nor a cat?
Mathematics
1 answer:
AfilCa [17]2 years ago
7 0
So, if 30 housholds have a cat 30/2 is 15.
15 housholds have a cat and a dog
30-15= 15 housholds have only cats
40-15=25 housholds only have dogs
25+15+15=55
60 housholds in total, so what is 60-55? <-- This will be your answer.
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Olivia finished a race in 40.64 seconds. Patty finished the race in 40.39 seconds. Miguel finished the race in 41.44 seconds. Ch
Reika [66]
Patty because she has the lowest time out of them all. From least to greatest Patty would be the least with her time being shorter than the rest
8 0
2 years ago
Which of the following describes how a lake might form?
jek_recluse [69]

Answer:

I think the answer is all of the above

6 0
3 years ago
BRAINLIEST AND 20 POINTS
Oksi-84 [34.3K]
<span>1. Which ratios form a proportion?
a. 4/5, 20/25   -----> 4/5, 4/5 Yes
b.8/12, 18/24  -----> 2/3, 3/4 No
c. 1/3, 7/24     ------> 8/24,7/24 No
d. 2/5, 6/16</span>     -----> 2/5, 3/8 No

<span>2.Which ratio forms a proportion with 9/15 = 3/5
a.3/6 = 2/3 No
b.2/3 No
c.12/30 = 2/5 No
d. 6/10</span> = 3/5 Yes

<span>3.Which proportion has cross products of 5 x 24 and 8x15?
a. 5/8=15/24 ----> 5 * 24 = 8 * 15   Yes
b.5/24=8/15  ----> 5 * 15 = 8 * 24   No
c.8/24=15/5  ----> 5 * 8 = 15 * 24   No
d. 15/8=5/24  </span>----> 15 * 24 = 5 * 8  No
3 0
3 years ago
A geometric sequence is defined by the equation an = (3)3 − n.
Delvig [45]
PART A

The geometric sequence is defined by the equation

a_{n}=3^{3-n}

To find the first three terms, we put n=1,2,3

When n=1,

a_{1}=3^{3-1}

a_{1}=3^{2}

a_{1}=9
When n=2,

a_{2}=3^{3-2}
a_{2}=3^{1}

a_{2}=3

When n=3

a_{3}=3^{3-3}

a_{3}=3^{0}
a_{1}=1
The first three terms are,

9,3,1

PART B

The common ratio can be found using any two consecutive terms.

The common ratio is given by,
r= \frac{a_{2}}{a_{1}}
r = \frac{3}{9}

r = \frac{1}{3}

PART C

To find
a_{11}

We substitute n=11 into the equation of the geometric sequence.

a_{11} = {3}^{3 - 11}

This implies that,

a_{11} = {3}^{ - 8}

a_{11} = \frac{1}{ {3}^{8} }

a_{11}=\frac{1}{6561}
4 0
3 years ago
a jeweler buys a ring for $85.00 and sell it with 135% increase in price. How much did he sell it for?
siniylev [52]
Well if the increase is 135% then
actual price=85
135% of actual price=114.75
new price
= actual price + increased price
= 85+114.75
=119.75
6 0
3 years ago
Read 2 more answers
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