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Karo-lina-s [1.5K]
3 years ago
9

Ten key is making a square frame for her painting.She is using 4pieces of wood that are each 2.75 feet long.how much wood will t

enley use to make the frame?
Mathematics
1 answer:
Oduvanchick [21]3 years ago
5 0

Answer: I think it is 11

Step-by-step explanation:

4 times 2.75 (because it is a square) is 11

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Last week, Delon ran a total of 32 miles. This week, he increased his running distance by 6.4 miles. By what percentage did he i
LekaFEV [45]

Answer:

Step-by-step explanation:

\frac{6.4}{32}*100=\frac{640}{32}\\\\=20

=20%

7 0
4 years ago
10. 10x + 5y = 15<br> y = 2x - 3
TiliK225 [7]

Answer:

if your looking for x then

Step-by-step explanation:

first add in the y by doing 10x+5(2x-3)=15 then 10x+10x-15=15 then 20x-15=15 then 20x=30 then divided by 20 for both sides which gets you x=30/20 or 1 1/3

6 0
4 years ago
Read 2 more answers
4th grade math help &amp; explain please
ohaa [14]

Nothing on the rectangle is shaded, unless the camera quality is poor.

0/12

7 0
3 years ago
The diagonals of a parallelogram are 24 meters and 40 meters and
Naddika [18.5K]

Answer:

  28 m

Step-by-step explanation:

The longer side can be found using the Law of Cosines. The semi-diagonals are of length 12 and 20 m, and the angle between them facing the long side is 180° -60° = 120°.

  c^2 = a^2 +b^2 -2ab·cos(C)

  c^2 = 12^2 +20^2 -2·12·20·cos(120°) = 144 +400 +240 = 784

  c = √784 = 28

The longer side is 28 meters.

8 0
3 years ago
PLEASE HELP ASAP! NO SCAMS ALLOWED!
Kitty [74]

Answer:

Step-by-step explanation:

I used calculus for this, as I'm not sure there's any other way to do it and to do it as easily. This is the volume of a solid found by using the disk method of rotation:

V=\pi\int\limits^a_b {[R(x)]^2-[r(x)]^2} \, dx

where R(x) is the outer shell of the solid and r(x) is the space inbetween the solid and the axis of rotation. There is no space between the solid and the axis of rotation, so r(x) = 0. R(x) is the height of the solid which is 3. Therefore, f(x) = 3 and that's the function we put into the formula with the lower bound of 3 and the upper bound of 5:

V=\pi\int\limits^5_3 {3^2}-0^2 \, dx  and

V-\pi\int\limits^5_3 {9} \, dx  and integrating:

V=\pi(9x\left \} {{5} \atop 3}} \right. and using the First Fundamental Theorem of Calculus:

V = π(9(5) - 9(3)) and

V = π(45 - 27) so

V = 18π units cubed or in decimal format,

V = 56.549 units cubed

6 0
3 years ago
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