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3 years ago

On Mondays, a coffee shop offers its customers a 25% discount on all coffee purchases. The coffee shop usually

Mathematics

1 answer:

ch4aika [34]3 years ago

6 0

Answer:

. c Step-by-step explanation:

. c

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I feed to find the circumference

fgiga [73]

answer:

131.88 inches

step-by-step explanation:

know the formula: 2πr
now plug in what we have

2πr = circumference

2(21)(3.14)

= 131.88

6 0

3 years ago

The archway to the entrance of an art gallery can be model by y= -1/3(x-5)(x+5) where x and y are measured in feet. The x-axis r

NikAS [45]

Answer:

x=5 feet

Step-by-step explanation:

At floor level y=0

If the expression is:

$0=1/3(x-5)(x+5)\\0=1/3(x^2-25)\\0=1/3x^2-25/3\\25/3=1/3x^2\\25=x^2\\x=5$

But, with the negative sign, the answer is x= 5i (where i is imaginary)

3 0

3 years ago

Math! Answer to 1&2?

Jobisdone [24]

Answer:

the number 1 is going to be B and number 2 is going to be C

Step-by-step explanation:

hope this helps

5 0

3 years ago

To be considered for pilot school, 12 students took a spatial reasoning test that resulted in this list of scores. Find the valu

lord [1]

Answer:

the 90th percentile is 145

Step-by-step explanation:

Data provided:

152 121 130 143 122 101 137 98 138 127 145 117

Number of students considered, n = 12

To find:

90th percentile

Now,

Step 1 : Arrange the data in ascending order

98, 101, 117, 121, 122, 127, 130, 137, 138, 143, 145, 152

Step 2 : Compute the position of the 90th percentile

position of the 90th percentile, i = (90% × n)

Thus,

i = 0.90 × 12

i = 10.8

Now,

Step 3 : Since, the index i is not an integer, round up to the nearest integer

i.e i = 11

Therefore,

The 90th percentile is the value in 11th position,

i.e 145

7 0

3 years ago

If cosA+sinA=√2, then prove A=45°.

Lyrx [107]

Answer:

1/2 now substitute 45 degrees

Step-by-step explanation:

6 0

3 years ago