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ratelena [41]
3 years ago
13

Is -7 + 28 positive or negative?

Mathematics
2 answers:
Scorpion4ik [409]3 years ago
8 0

Answer:

Positive

Step-by-step explanation:

-7 + 28 = 21

stepan [7]3 years ago
7 0

Answer:

Positive

Step-by-step explanation:

-7+28=21

21 is positive

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Safe wheelchair ramp specifications require about 4.75° maximum angle to be constructed with the ground. At a particular buildin
NeTakaya

Answer:

The ramp must cover a horizontal distance of approximately 19.081 feet.

Step-by-step explanation:

Given the vertical distance (y), measured in feet, and the angle of the wheelchair ramp (\theta), measured in sexagesimal degrees. The horizontal distance needed for the ramp (x), measured in feet, is estimated by the following trigonometrical expression:

x = \frac{y}{\tan \theta} (1)

If we know that y = 1\,ft and \theta = 3^{\circ}, then the horizontal distance covered by this ramp is:

x = \frac{1\,ft}{\tan 3^{\circ}}

x \approx 19.081\,ft

The ramp must cover a horizontal distance of approximately 19.081 feet.

4 0
3 years ago
Which value in this set is greatest in value? (31% , 0.311, 0.3) =
Gennadij [26K]

Answer:

0.311,31%,0.3

Step-by-step explanation:

0.311 is the greatest

31% is second greatest

0.3 is smallest

8 0
3 years ago
Write two multiplication sentences that have a product of 16
Hatshy [7]
2 times 8=16
4 times 4=16
7 0
3 years ago
Read 2 more answers
John is 14 years older than Sam and the product of their ages is 240. How old is Sam?
Shtirlitz [24]

Answer:

A.) 10 years old

Step-by-step explanation:

Sam: John - 14

S = J - 14

S x J = 240

10 = J - 14

0 = J - 14 - 10

-J = -24

J = 24

10 x 24 = 240

3 0
3 years ago
Devin's DVD case has 3 rows of slots, but 5 slots are broken.If x equals the number of slots in a row explain how the expression
Paul [167]

Answer:

The total number of unbroken / working slots

Step-by-step explanation:

Given that Devin's DVD case has 3 rows of slots, but 5 slots are broken

Also given that the number of slots in a row is x

1 row has x slots

3 rows has y slots

on cross multiplication we get y = 3x

ie there are a total of 3x slots in the 3 rows

Given that out of these 3x slots 5 . of the slots are broken

Therefore the total number of working slots = total number of slots - number of slots which are broken

total number of working slots are = 3x - 5

Therefore the given expression is the number of working / good slots

6 0
3 years ago
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