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Luda [366]
2 years ago
12

Why is this system no solution? 2y = 7 x -3 y = -2

Mathematics
1 answer:
Thepotemich [5.8K]2 years ago
5 0

Step-by-step explanation:

solved using substitution method

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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
What is the best estimate for the volume of the pyramid?
laila [671]

<span>Volume of the pyramid = (1/3) * base area * height
Base area = 230</span>² = 52,900 m²
<span>Volume of the pyramid = (1/3) * 52,900 * 138 = 2,433,400 m</span>³
6 0
3 years ago
You are asked to draw a triangle with side lengths of 6 inches and 8 inches. What is the longest whole number length that your t
tensa zangetsu [6.8K]
Fo sides, a,b,c
where c is the longest

c<a+b
or else you won't have a triangle

we want the longest side
this mystery side is c
other ones are a and b

c<6+8
c<14
the next largest whole number is 13

answer is 13 inches
3 0
3 years ago
Read 2 more answers
What are the dimensions of the outside rectangle?
Inessa [10]

Outer Square perimeter minus inside perimeter equals outside square perimeter

5 0
3 years ago
Vertex: <br> (<br> 2<br> ,<br> 0<br> )<br> , Passes through: <br> (<br> 5<br> ,<br> −<br> 18<br> )
NemiM [27]

Answer:

2>0                5>-18

Step-by-step explanation:

8 0
2 years ago
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