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3 years ago

15

A math test is worth 100 points and has 38 problems. Each problem is worth either 5 points or 2 points. How many problems of eac

h point value are on the test?

1 answer:

serious [3.7K]3 years ago

5 0

Give me brainkiser to answer

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Brownies are now on sale. Each brownie costs $0.20 less than the original price. Right now, if you buy 8 of them it will cost $1

Airida [17]

Answer: The original price of brownie was $2.1 each.

Step-by-step explanation:

since we have given that

Let the original price will be x

Number of brownie purchased = 8

According to question , each brownie costs $0.20 less than the original price.

So, it becomes

$8\times (x-0.20)=\$15.20\\\\8x-1.6=15.20\\\\8x=15.20+1.60\\\\8x=16.8\\\\x=\frac{16.8}{8}\\\\x=\$2.1$

Hence, the original price of brownie was $2.1 each.

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3 years ago

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fiasKO [112]

Answer:

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3 years ago

Prove this trigonometric identity<br>sin 3x/sin x - cos 3x/cos x =2

Sveta_85 [38]

Step-by-step explanation:

LHS= sin 3x/sin x - cos 3x/cosx

Taking LCM,

<u>=</u><u>sin3xcosx- cos3xsinx</u>

sinxcosx

<u>=</u><u>sin(3x-x)</u>

sinxcosx

= <u>2sin2x</u>

2sinxcosx

=<u> </u><u>2sin2x</u><u> </u>

sin2x

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= RHS.

Proved.

8 0

3 years ago

Tikiro places a wrench on a nut and applies a downward force of 32 pounds to tighten the nut. If the center of the nut is at the

Butoxors [25]

Answer:

Answer: b. 20.8 ft-lb

Step-by-step explanation:

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3 years ago

Find the area of a tank which measures 25cm and 10cm

laiz [17]

Answer:

Area = 250

Step-by-step explanation:

25 x 10

Length * Width

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2 years ago