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vichka [17]
3 years ago
8

Johanna uses 40 sheets of paper in 4 days. Her sister uses twice as much of paper in half the number of days. How many times mor

e paper does her sister use.(please show work.)
Mathematics
2 answers:
Masteriza [31]3 years ago
7 0
Hmm, I think you would take 40 and multiply it by 2 because her sister used "twice as many". Then I'm pretty sure you would take your answer from that and divide it by 2 because she used that amount of paper in "half the number of days"?

40 x 2 = 80 all together used
80 / 2 = 40 how many used each day
Is that what you were asking? If I'm wrong let me know please
elena-s [515]3 years ago
7 0

Answer:

Step-by-step explanation:

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8x - 10 = 86 {combined like terms}

8x = 96 {added 10 to both sides}

x = 12 {divided both sides by 8}

3x - 5 = 31 {substituted 12, in for x, into 3x - 5}


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5 0
3 years ago
In ΔJKL, k = 9.6 cm, l = 2.7 cm and ∠J=43°. Find ∠L, to the nearest 10th of a degree.
Bogdan [553]

Answer:

L = 10.64°

Step-by-step explanation:

From the given information:

In triangle JKL;

line k = 9.6 cm

line l = 2.7 cm; &

angle J = 43°

we are to find angle L = ???

We can use the sine rule to determine angle L:

i.e

\dfrac{j}{SIn \ J} = \dfrac{l}{ SIn \ L}

Using Pythagoras rule to find j

i,e

j² = k² + l²

j² = 9.6²+ 2.7²

j² = 92.16 + 7.29

j² = 99.45

j = \sqrt{99.45}

j = 9.97

∴

\dfrac{9.97}{Sin \ 43} = \dfrac{2.7}{ Sin \ L}

{9.97 \times    Sin (L ) = (2.7 \times Sin \ 43)

=  Sin \ L = \dfrac{ (2.7 \times Sin \ 43)}{9.97 } \\ \\ =  Sin \ L = \dfrac{ (2.7 \times 0.6819)}{9.97 }  \\ \\  = Sin \ L = 0.18466 \\ \\  L = Sin^{-1} (0.18466) \\ \\  L = 10.64 ^0

3 0
3 years ago
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Answer:

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Step-by-step explanation:

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Answer:

8x^6y^3

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(2x2y)3

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33°<br> (3m + 3)<br> ent OR Vertical_<br> Angle Relationship: Complementary OR Supplementary
Reptile [31]

Answer:

complementary

Step-by-step explanation:

because the angles add up to 90°

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