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Brums [2.3K]
3 years ago
9

An item on sale costs 25% of the original price. If the original price was $40 , what is the sale price?

Mathematics
2 answers:
Ksenya-84 [330]3 years ago
8 0
25% of $40 is 10, so the answer is $10
forsale [732]3 years ago
3 0
It’s ten (I need more Characters)
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Cheyenne is making friendship bracelets for all of her friends. Each bracelet requires 2/3 meter of thread. If
suter [353]
3 because we get 7/3 in whole and 7/2=3,5. Complete 3 and a half of forth)
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2 years ago
There are 6 red marbles, 5 green marbles, and 4 yellow marbles in a bag. If Joe picks 2
Komok [63]
30/210 simplified to 1/7 i think
8 0
2 years ago
Which measurement could create more than one triangle? A.? A triangle with sides measuring 5 inches, 7 inches, 9 inches B. A tri
rewona [7]

Answer: B. A triangle with sides measuring 50 mm 35 mm and a non-included angle measuring 25° .

Step-by-step explanation:

A. A triangle with sides measuring 5 inches, 7 inches, 9 inches

Only one triangle can be possible because all the triangles with equal sides must be equal by SSS congruence rule.

B. A triangle with sides measuring 50 mm ,35 mm and a non-included angle measuring 25°.

More than one triangle can be possible because there is no congruence rule for two equal sides and one non-equal angle ( no SSA rule exist).

C. A triangle with sides measuring 5 cm, 10 cm, and 15 cm .

This triangle is not possible because it doesn't satisfy triangle's inequality as 5+10=15  [Triangles inequality : a+b> c, where a, b, c are sides of triangle]

D. A triangle with sides measuring 8 cm and 12 cm in an included angle measuring 85°.

Only one triangle can be possible because all the triangles have two equal sides and their included angle is equal by SAS congruence rule.

Hence, the required measurement to create more than one triangle:

A triangle with sides measuring 50 mm 35 mm and a non-included angle measuring 25° .

So, correct option is B.

7 0
2 years ago
What is the slope of any line that is perpendicular to the line that contains the points (8,8) and (12,12)
svetlana [45]

Answer: 1

Step-by-step explanation:

12-8=4

12-8=4

4 over 4 is 1

if it perpendicular then it's the opposite reciprocal

hope that help

8 0
2 years ago
A manager records the repair cost for 4 randomly selected stereos. A sample mean of $82.64 and standard deviation of $14.32 are
zysi [14]

Answer:

CI = (70.861 , 94.418)

Step-by-step explanation:

In order to determine the 90% confidence interval you use the following formula (for a population approximately normal):

CI=(\overline{x}-Z_{\alpha/2}\frac{\sigma}{\sqrt{n}},\overline{x}+Z_{\alpha/2}\frac{\sigma}{\sqrt{n}})    (1)

\overline{x}: mean = 82.64

σ: standard deviation = 14.32

n: sample = 4

α: tail area = 1 - 0.9 = 0.1

Z_α/2 = Z_0.05: Z factor =  1.645

You replace these values and you obtain:

Z_{0.05}(\frac{14.32}{\sqrt{4}})=(1.645)(\frac{14.32}{\sqrt{4}})=11.778

The confidence interval will be:

CI=(82.64-11.778,82.64+11.778)=(70.861,94.418)

The 90% confidence interval is (70.861 , 94.418)

6 0
3 years ago
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