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spayn [35]
2 years ago
13

PLEASE help I will mark you as brainy

Mathematics
2 answers:
larisa86 [58]2 years ago
8 0

Answer:

Step-by-step explanation:

45

Korvikt [17]2 years ago
8 0
Hey, your answer is B.)

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3 years ago
Simplify the following expression.<br><br> 7d + 12 – 4d – 3
Stella [2.4K]

Hello!

7d + 12 -4d -3\\

Explanation:

↓↓↓↓↓↓↓↓↓↓↓

First this problem it should be the group like terms.

7d-4d+12-3

Then you add similar elements.

7d-4d=3d

3d+12-3

You can also add or subtract by the numbers.

12-3=9

=3d+9

Answer⇒⇒⇒3d+9

Hope this helps!

Thank you for posting your question at here on Brainly.

Have a great day!

-Charlie

3 0
3 years ago
Read 2 more answers
What is (x^-2 y^10)^2/x^5 y^-3 using only positive exponents
Eddi Din [679]

Answer:

\frac{(x^{ - 2}{y}^{10})^{2}  }{ {x}^{5}  {y}^{ - 3} }  \\   \frac{ {x}^{ - 4}  {y}^{20} }{ {x}^{5}  {y}^{ - 3  } }  \\   {x}^{ - 9}  {y}^{23} \\  \frac{ {y}^{23} }{ {x}^{9} }  \\ ans \: c

8 0
2 years ago
Samantha sends her son, Barry, to a preschool center on certain days. The cost of preschool is $45 per day along with a fixed mo
MAXImum [283]

Answer:

<h3><em>D. 880 = 45d + 70; 18 days.</em></h3>

Step-by-step explanation:

We are given fixed monthly charge = $70.

The cost of preschool per day = $45.

Number of days = d.

Total cost of d days = cost per day × number of days + fixed monthly charge.

Therefore, we get equation

880 = 45×d+70

<h3>880 = 45d +70.</h3>

Now, we need to solve the equation for d.

Subtracting 70 from both sides, we get

880-70 = 45d +70-70

810=45d

Dividing both sides by 45, we get

\frac{810}{45} =\frac{45d}{45}

18=d.

Therefore,<em> 18 days Barry attended preschool last month.</em>

<em>Therefore, correct option is D option.</em>

<h3><em>D. 880 = 45d + 70; 18 days.</em></h3>
4 0
3 years ago
HELP! I’ll MARK BRAINLIEST
Grace [21]

Answer:

they ran 5 and 2 and half hour

Step-by-step explanation:

they ran 5 and 2 and half hour

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3 years ago
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