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xeze [42]
3 years ago
15

Translate the sentence into an equation.

Mathematics
1 answer:
GREYUIT [131]3 years ago
5 0

Answer:

3* (b+9) = 4

Step-by-step explanation:

b is the unknown number

Three times the sum of a number and 9 is 4.

3* (b+9) = 4

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There are 25 desks in a classroom. The number of rows is five less than twice the number of desks in each row. Find the number o
anastassius [24]
Let's say each row has x desks and there are y rows.

We then know that x*y =25

We also know that x*2-5=y (number number of rows is five less than twice the number of desks in each row)

So we substitute: x*(x*2-5)=25
putting numbers out of the brackets:
2x*x-5x=25

2x*x-5x-25=0
 
(2x+5)(x-5)=0 (this bracketing is true: you can check it by expanding it:
2x*x-10x+5x-25

So that means that either x=-2.5which can't be : there can't be a fractional number of benches,

or  x=5
so each row has 5 desks and there are 2*5-5 rows, or 5 rows.


6 0
3 years ago
The table shows the last holiday destination of 60 people.
Rzqust [24]

Answer:

Step-by-step explanation:

6 0
3 years ago
Alejandra is packing a bag for a flight. The airline has a baggage weight limit, and Alejandra has already packed her bag with s
slava [35]

there are no pictures of a graph BUT i can give you the intercepts.

x=2

y=12

OR

x=4

y=8

OR (sorry i cant see the graph options its one of the three)

x=8

y=3

its a solid line

x are the shoes

y are the outfits

3 0
3 years ago
Simplify and express with POSITIVE indices <br><br> a^3*a^-4*a^5
valkas [14]

Answer:

hello :

a^4

Step-by-step explanation:

a^3*a^-4*a^5 = a^(3 - 4 +5) = a^4

5 0
3 years ago
Help please I’ll give you 45 points
maksim [4K]

Answer:

63 square inches

Step-by-step explanation:

You already have the polgygon divided into two rectangles, so we will use them.

The top rectangle has the dimensions of 5 and 9.

The bottom rectangle has the dimensions of 6 and 3.

To find the area of a rectangle:

area = length x width

A = lw

The area of the top rectangle:

A = 5 x 9

A = 45 square inches

The area of the bottom rectangle:

A = 6 x 3

A = 18 square inches

To find the total area, add the two areas together.

45 + 18 = 63 square inches

4 0
2 years ago
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