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Whitepunk [10]
3 years ago
10

Which of the following are the correct answers??

Mathematics
2 answers:
Amanda [17]3 years ago
6 0
Either B and D. Both seem pretty random lol
kati45 [8]3 years ago
5 0

Answer:

B and D

Step-by-step explanation:

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Simplify the following expression. (19x + 4y) + (49x + 32y)
Valentin [98]

Answer:

68x + 36y

General Formulas and Concepts:

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  • Combining like terms

Step-by-step explanation:

<u>Step 1: Define expression</u>

(19x + 4y) + (49x + 32y)

<u>Step 2: Simplify expression</u>

  1. Combine like terms (x):                    68x + 4y + 32y
  2. Combine like terms (y):                    68x + 36y
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Answer:

Step-by-step explanation:

56

8 0
3 years ago
A man buys a certain number of Litchies at 20 per rupee and equal number at 30 per rupee. He
ANTONII [103]

Full question :

A man buys a certain number of oranges at 20 for Rs. 60 and an equal number at 30 for Rs. 60. He mixes them and sells them at 25 for Rs. 60. What is the gain or loss percent?

Answer:

4% loss(percentage loss on cost price)

Step-by-step explanation:

we will be employing algebra in solving this problem :

20 oranges at 60 Rs=60Rs/20 per orange=3Rs per orange

Say x oranges bought at 3Rs per orange=3Rsx

Equal number of oranges at 30 oranges for 60 Rs=60Rs/30 per orange=2Rs per orange

Say x oranges bought at 3Rs per orange=2Rsx

Total Cost Price = 3Rsx + 2Rsx = 5Rsx

He then sells all oranges at 25 for 60 Rs

Therefore price per orange=60/25=12/5Rs

since he sold x+x oranges(from the above calculations)

Total selling price=total oranges *12/5Rs=2x oranges*12/5Rs=24x/5Rs

Profit or loss=24x/5-5x=-x/5

therefore we have a loss =-x/5

Percentage of loss(on cost price)

=x/5÷5x∗100=

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In ΔABC, if m∠A = 43° and m∠C = 66°, then find m∠B.
weqwewe [10]
The measures of the angles in a triangle add up to 180°.
m \angle A + m \angle B + m \angle C = 180^\circ \\&#10;m \angle A=43^\circ, \ m \angle C = 66^\circ \\ \downarrow \\&#10;43^\circ+ m \angle B + 66^\circ = 180^\circ \\&#10;m \angle B + 109^\circ = 180^\circ \\&#10;m \angle B =180^\circ - 109^\circ \\&#10;\boxed{m \angle B=71^\circ}
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