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Masja [62]
3 years ago
11

Bert’s age plus twice Ernie’s age is 30. Bert’s age plus 8 times Ernie’s age is 108. How old are Bert and Ernie?

Mathematics
1 answer:
Komok [63]3 years ago
6 0

Answer:

They are 12 and 9

Step-by-step explanation:

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Food pill: $9<br> Sales tax:6%<br> Tip:20%<br><br> Can you help me please
steposvetlana [31]

Answer: $11.45

Step-by-step explanation:

Food pill: $9

Tax: 6%

Tip: 20%

x=(9)+(9)(0.06)+[(9)+(9)(0.06)](0.20)\\x=11.45

3 0
3 years ago
laura decides to walk to her job. she walks 1 1\2 miles in 3\5 hour. what is laura's walking rate? laura's job is 4 1\2 miles aw
Nuetrik [128]
To find the rate in miles per hour, divide the miles by the hours.

(1 1/2 miles)/(3/5 hour) =

= 3/2 miles * (5/3 hour)

= 5/2 mph

= 2 1/2 mph

Her walking rate is 2 1/2 mph.

(4 1/2 miles) / ( 2 1/2 mph) =

= 9/2 miles / (5/2 mph)

= 9/2 * 2/5 hours

= 9/5 hours

= 1 4/5 hours

From 9:00 a.m. to 11 a.m., she has 2 hours, but she only needs 1 4/5 hours to walk, so she will make it to work on time.
4 0
4 years ago
Will mark brainliest for area.
Elena L [17]

Answer:

c

Step-by-step explanation:

first, find the area of the rectangle thing,

A = lw

14 x 8

112

but, there is a semicircle in it so you need to subtract that from it:

A = πr^2/2

A = π(4)^2/2

A = π16/2

A = 8π

A ≈ 25.132741228718346

then subtract that area from the area of the rectangle:

112 - 25.132741228718346

86.867258771281654

or about 89.9

6 0
3 years ago
Help a sister out :))
soldi70 [24.7K]

Answer:

125

Step-by-step explanation:

-125 x -1

5 0
4 years ago
Archaeology students are constructing a replica of the Great Pyramid of Giza that they will then fill with sand. The replica is
antiseptic1488 [7]

Answer:

2,583,283 cubic metres (91,227,778 cu ft)

Step-by-step explanation:

3 0
3 years ago
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