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Vlad [161]
2 years ago
7

Amy is scuba diving. She starts at – 15.5 m relative to the ocean surface. She swims

Mathematics
1 answer:
solniwko [45]2 years ago
3 0

Answer:

-9.85

Step-by-step explanation:

-15.5 - 4.2 = -19.7

Negatives work like positives

19.7 / 2 = 9.85

Turn that into a negative

-9.85

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Andrew writes the algrebraic expression 2s + 2.97 to represent the cost of his lunch. He bought 2 sandwhiches and a large drink.
krok68 [10]

Answer:

Step-by-step explanation:

2s + 2.97, if he buys 2 sandwiches and a large drink then

2 represent the coefficients of s which is the number of sandwiches he bought

s represent a variable since it a function of the coefficient; s represent the price of sandwich

2.97 represent the price of large drink and also a constant since it has no letter added to  

3 0
3 years ago
A student has received the following test scores: 71%, 89%, 72%,
lidiya [134]

Answer: 81%

Step-by-step explanation:

From the question, we are informed that a student received the following test scores: 71%, 89%, 72%,

84% and 83% in 5 tests and the student wants to maintain an average of 80%.

The lowest score/grade they can receive on the next test to maintain at least an 80% average first thus:

First, to make it easy we can remove the percent sign. Then we multiply 80 by 6 since we're calculating for 6 tests scores. This will be:

= 80 × 6

= 480

We then add all the 5 test scores. This will be:

= 71 + 89 + 72 + 84 + 83

= 399

We then subtract the values gotten. This will be:

= 480 - 399

= 81

This means the student must get at least 81%

5 0
3 years ago
Please show work!!!!!!!!!!!!
Svetlanka [38]

Answer:

x = 7

Step-by-step explanation:

Notice that in the triangle, the angle is either known or in terms of x. This means we can make an equation: 82 + (9x - 6) + (6x - 1) = 180. Now, add up tthe terms to get 15x + 75 = 180, or 15x = 105 or x = 7.

5 0
3 years ago
Geometry Question Help if you can please
docker41 [41]

Answer:

≈ 78.55 cm

Step-by-step explanation:

Using the ratio of arc (AB) to circumference (C) is equal to the ratio of angle subtended at centre by arc AB to 360°, that is

\frac{AB}{C} = \frac{110}{360} , that is

\frac{24}{C} = \frac{110}{360} ( cross- multiply )

110C = 8640 ( divide both sides by 110 )

C = \frac{8640}{110} ≈ 78.55 cm ( to 2 dec. places )

5 0
3 years ago
What numbers go into 49 42 and 21
Ilia_Sergeevich [38]

7 is the only number that goes into all of em

7 0
2 years ago
Read 2 more answers
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