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3 years ago

11

the length of a rectangle is 5 meters more than the width. the perimeter is 26 meters. write and solve an equation to find the l

ength and the width

1 answer:

fredd [130]3 years ago

6 0

Answer:

Step-by-step explanation:

If width =x

Length =x + 5

Perimeter =x+x+5+x+x+5

26=4x+10

16=4x

X=4

Therefore width =4

Length =9

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Phil strung two sets of lights around the window of his store. The first set of lights blinks every 30s and the second every 45s

Amiraneli [1.4K]

Answer:

Every 90 seconds, the two sets of light blink together.

Step-by-step explanation:

Given that there are two sets of lights.

First light blinks at every 30s and

Second light blinks at every 45s

To find:

How often the sets of lights blink together?

Solution:

As per given statement,

First light blinks after 30s, 60s, <u>90s</u>, 120s, 150s, <u>180s</u>, ........

Second light blinks after 45s, <u>90s</u>, 135s, <u>180s</u>, .....

If we look at the common time, shown by underlining it, the two sets of light blink at the same time after 90s, 180s, ...... and so on.

So, the two lights blink together after every 90s.

This can also be solved by finding LCM (Least Common Multiple) of the two numbers i.e. 30 and 45.

Let us have a look at the factors of 30 and 45.

30 = 2 $\times$ <u>3</u> $\times$ <u>5</u>

45 = 3 $\times$ <u>3</u> $\times$ <u>5</u>

<u />

So, LCM = 2 $\times$ 3 $\times$ 3 $\times$ 5 = <em>90</em>

<em></em>

So, after every <em>90s, </em>the lights will blink together.

5 0

3 years ago

I need to find the product help

tankabanditka [31]

-3 8/3 = -11/3

so
(-11/3) x (6/5)
= (-11) x (2/5)
= - 22/5
= - 4 2/5

hope it helps

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3 years ago

What is the volume of a box that will hold exactly 567 of these cubes with 1/3 inch sides?

natima [27]

21-inch³ is the Answer

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3 years ago

Help please it is graphing

Alja [10]

Here are the pairs:

(from the left)

First group: 3rd graph, y = x - 2, table g

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Third group: 1st graph, y = x + 2, table m

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3 years ago

In a pen of goats and chickens, there are 40 heads. and 130 feet How many goats and chickens are there?

timama [110]

Answer:

25 goat and 15 chicken

Step-by-step explanation:

Say the number of goats is G, then the number of chickens is 40 - G as there are 40 heads and each chicken and each goat has one head.

The number of feet is 130

So 2(40 - G) + 4G = 130

So 80 - 2G + 4G = 130

2G = 50

G = 25

25 goats and 15 chickens

8 0

3 years ago