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Agata [3.3K]
3 years ago
10

What other number is a part of this fact family?3,4

Mathematics
1 answer:
iogann1982 [59]3 years ago
5 0
A fact family needs to have at least 3 numbers. The first two numbers are added to give the third number. A fact family is used to show the Commutative Property of Addition. So,
3 + 4 = 4 + 3 = 7
The third number is 7
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A museum has 450 visitors each day. If they are open 5 hours, how many people do they see per hour?
il63 [147K]

Answer: 90 visitors per hour

Explanation: "Per hour" means in 1 hour, so we can rewrite the given statement using fractions as <em>450 visitors/5 hours = __visitors/1 hour</em>.

To find out what goes in the bank, notice that we

have a 1 in the denominator of our second fraction.

So we want to find a fraction that is equivalent

to 450/5 that has a 1 in the denominator.

If we divide the numerator and denominator of 450/5 by 5,

we get the equivalent fraction 90/1 or <em>90 visitors/1 hour</em>.

So now we have <em>90 visitors/1 hour = __visitors/1 hour</em>.

So a 90 must go in the blank.

This means that the museum sees 90 visitors per hour.

5 0
3 years ago
Is the measurement that combines both the speed and direction of a
Kryger [21]
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4 0
2 years ago
Which graph represents y=x-5?​
elena-s [515]
Can uu show the rest of the graph??????
3 0
2 years ago
Simplify the expression.
Kitty [74]
5(8x - 10) - 10x + 25(8x - 10) - 10x + 2
= (40x - 50) - 10x + (200x - 250) - 10x + 2
= 40x - 50 - 10x + 200x - 250 - 10x + 2
= (grouping like terms together)
= 40x - 10x + 200x - 10x - 50 - 250 + 2
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5 0
2 years ago
If the length of a pool is 8 more than twice the width and the total area is 960 square feet, find the length and width of the r
melomori [17]

Answer:

l=48, w=20

Step-by-step explanation:

Let the width of the pool be w feet, then the length will be:

l = 2w + 8

The area of the pool is 960 square feet.

This means that:

w(2w + 8) = 960

Expand and rewrite in standard form to get:

2 {w}^{2}  + 8w - 960 = 0

{w}^{2}  + 4w  - 480 = 0

{w}^{2}  + 24w   - 20w- 480 = 0

{w}(w+ 24) - 20(w + 24) = 0

Factor to get:

(w+ 24)(w  - 20) = 0

w =  - 24 \: or \: w   =  20

We discard the negative value because magnitude is positive.

This means

l = 2 \times 20 + 8 = 48

3 0
3 years ago
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