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Mamont248 [21]
3 years ago
12

Find the square of ( b - 9 )

Mathematics
1 answer:
Kruka [31]3 years ago
6 0

Answer:

{b}^{2}  - 18b + 81

Step-by-step explanation:

{(b - 9)}^{2}  =  {b}^{2}  - 2 \times b \times 9 +  {(9)}^{2}  \\  =  {b}^{2}    - 18b + 81

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Write an inequality for the following statement: Sharon earns at least 8 dollars (d) per baby-sitting job.​
Schach [20]

Answer:

d ≥8

Step-by-step explanation:

She is earning AT LEAST meaning that she gets at least more than 8 dollar per job

7 0
2 years ago
Can someone help me pls
jeka94
The answer for this is C
8 0
3 years ago
Can someone please help me I’m having some trouble with this question I will give a brainliest
aleksley [76]

Answer: it should be 28

Step-by-step explanation: because the way the other problems are solved is the right side of the triangle times the bottom and then adding the left side of the triangle, ( 9x8+7=79 ) ( 5x5+5=30) so to get the answer you’d just multiply 24x3= 72 , then subtract 100-72= 28

3 0
3 years ago
Read 2 more answers
The Lopez family and the Russell family each used their sprinklers last summer. The water output rate for the Lopez family's spr
grin007 [14]
L = hours used by the Lopez's sprinkler

R = hours used by the Russell's sprinkler

so, we know the Lopez's sprinkler uses 15 Liters per hour, so say after 1 hour it has used 15(1), after 2 hours it has used 15(2), after 3 hours it has used 15(3) liters and after L hours it has used then 15(L) or 15L.

likewise, the Russell's sprinkler, after R hours it has used 40R, since it uses 40 Liters per hour.

we know that both sprinklers combined went on and on for 45 hours, therefore whatever L and R are, L + R = 45.

we also know that the output on those 45 hours was 1050 Liters, therefore, we know that 15L + 40R = 1050.

\bf \begin{cases}
L+R=45\implies \boxed{L}=45-R\\
15L+40R=1050\\
----------\\
15\left(\boxed{45-R}  \right)+40R=1050
\end{cases}
\\\\\\
675-15R+40R=1050\implies 25R=375\implies R=\cfrac{375}{25}\\\\\\ R=15

how long was the Lopez's on for?  well, L = 45 - R.
7 0
3 years ago
When Liz woke up in the morning, it was 6°F. By the late afternoon, the temperature had dropped 9°F.
Annette [7]

Given:

Temperature in the morning = 6°F.

By the late afternoon, the temperature had dropped 9°F.

To find:

The temperature by the late afternoon.

Solution:

Temperature by the late afternoon = Morning temperature - Dropped temperature

Using the given values and the above formula, we get

Temperature by the late afternoon = 6°F - 9°F

Temperature by the late afternoon = -3°F

Therefore, the temperature by the late afternoon is -3°F.

5 0
3 years ago
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