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ikadub [295]
3 years ago
11

Kate bought $23.40 worth of two types of bird seed. Thistle bird seed sells for $1.60 per pound

Mathematics
1 answer:
bonufazy [111]3 years ago
7 0

Answer:

The amount of thistle bird seed she purchased was 7.5 pounds

Step-by-step explanation:

Let

x ----> the amount in pounds of thistle bird seed she purchased

x ----> the amount in pounds of wild bird seed she purchased

we know that

Kate bought $23.40 worth of two types of bird seed.

so

1.60x+0.95y=23.40 ----> equation A

She bought 12 pounds of wild bird seed

so

y=12\ pounds

substitute the value of y in the equation A

1.60x+0.95(12)=23.40

solve for x

1.60x=23.40-11.40\\1.60x=12\\x=7.5\ pounds

therefore

The amount of thistle bird seed she purchased was 7.5 pounds

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<h3>Jason bought 20 stamps of $0.41 each and 8 postcards of $0.26 each.</h3>

<em><u>Solution:</u></em>

Let stamps be s and postcards be p

Given that,

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Therefore,

s \times 0.41 + p \times 0.26 = 10.28

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Substitute eqn 1 in eqn 2

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1.08p = 10.28 - 1.64

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Divide both sides by 1.08

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3 years ago
Show me how to get this answer show your work
Rama09 [41]

We know that angle MKJ is comprised of angle MKL and angle LKJ. That means if we add MKL and LKJ, we should get 80 degrees, which is the measure of angle MKJ.

MKL + LKJ= MKJ \implies \\ 2x+10+3x-5=80 \implies \\ 5x+5=80 \implies\\ 5x=75 \implies \\ x=15

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