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mina [271]
3 years ago
12

I need help ASAP. ! I’m in 7 grade and I am not very good a math

Mathematics
1 answer:
Stells [14]3 years ago
4 0
Figure 2 & 4

Figure 2 is scaled 2x the size of the letter A
Figure 4 is 2x smaller than the size of the letter A
You might be interested in
3.
Reil [10]

<u>Answer:</u>

x = 5.00 cm

<u>Step-by-step explanation:</u>

• area of the rectangle = x   x   (x + 1)

                                     = x^2 + x

• area of the circle = π r²

                               = \frac{22}{7}   x   (x + 2)^2

                               = \frac{22}{7}   x   (x^2 + 4x + 4)

∴   x^2 + x   +    \frac{22}{7}   x   (x^2 + 4x + 4)  = 184  

⇒  x^2 + x      +   \frac{22}{7}  x^2   \space\ + \space\ \frac{88}{7} x \space\  +  \space\  \frac{88}{7} = 184

⇒  \frac{29}{7}x^2 \space\  +  \space\  \frac{95}{7}x \space\ - \frac{1200}{7} = 0

• Using quadratic formula, where

a = \frac{29}{7}

b = \frac{95}{7}

c = \frac{-1200}{7} ,

x=\frac{-b \pm \sqrt{b^2-4c}}{2}

x = \frac{-\frac{95}{7}\pm \sqrt{(\frac{95}{7})^2 - 4(\frac{29}{7})(\frac{-1200}{7} )  }  }{2(\frac{29}{7})}

x = 5.00   \space\   \space\ \space\ or  \space\ \space\ \space\   x = -8.28

As length (x) cannot be a negative number,

x = 5.00 cm

7 0
2 years ago
What is the value of k?​
ELEN [110]

Answer:

10°

Step-by-step explanation:

According remote interior angles, 4k + 5 + 6k + 10 = 115.

10k + 15 = 115

10k = 100

k = 10

Hope this helps :)

Have a nice day!

4 0
3 years ago
Read 2 more answers
Can someone help me? thanks!
masha68 [24]
So you know that 1 cubic foot is equal to 80 pounds. So, the first point would be (1,80). 
You can find the other points by multiply 80 by a number, and when I did that, I got (2,160) and (3,240) too.

I hope this helps :)
6 0
3 years ago
Solve -5x2 - 20x + 35 = 30 by completing the square.
Semenov [28]

Answer:

x=−2−√5 or x=−2+√5

Step-by-step explanation:

-5x2 - 20x + 35 = 30

Answer = x=−2−√5 or x=−2+√5

5 0
3 years ago
Please help 8th time posting
neonofarm [45]

Answer:

Graham: -50x + 14,040

Max:  20x + 12,500

  Graham = Max

-50x + 14,040 = 20x + 12,500

   +50x +50x              

       14,040 = 70x + 12,500

          -12,500-12.500

            1,540  = 70x

               220 = x

Answer: 220 minutes (3 hours 40 minutes)

PLZ MARK AS BRAINILEST:-)

3 0
3 years ago
Read 2 more answers
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