3 years ago

Help me please i will give extra points if u help me and answer it correctly

Mathematics

1 answer:

m_a_m_a [10]3 years ago

7 0

Answer: oop its A and make a graph on the side to explain your answer

Step-by-step explanation:

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Expand the expression (5x + 3)2, and write the result in standard form.

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$(5x+3)^2\\\\\text{use}\ (a+b)^2=a^2+2ab+b^2\\\\=(5x)^2+2(5x)(3)+3^2\\\\=5^2x^2+30x+9\\\\=25x^2+30x+9\to D.$

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Jeremy Earned $33 for four hours of work .how much would he earn for seven hours of work at the same rate

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33/4= $8.25 an hour
8.25 x 7= 57.75

Jeremy would earn $55.75 if he works for seven hours

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3 years ago

Help me plz

irakobra [83]

Answer:

I could do 1 and 3

1) 2x-3y=-2 ....1

2x+y=14......2

=-4y=-16

y=4

Substitute (y=4) into equation 1

2x-3 (4)=-2

2x-12=-2

2x=-2+12

2x=10

×=5

3) 5x+5y=20....1

-3x+5y=4......2

=8x=16

x=2

Substitute (x=2) into equation 1

5 (2)+5y=20

10+5y=20

5y=20-10

5y=10

y=2

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1. What is the exact circumference of a circle that has a radius of 10 cm?

Contact [7]

Answer:

62.8318531

10 x 2 = 20 so 20 is the diameter

20 x pi = 62.8318531

Hope this helps

Step-by-step explanation:

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What is wrong with the circle graph?

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It doesn't add up to 360 degrees

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