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WARRIOR [948]
3 years ago
15

Devon drove at the same speed for 4 hours. He drove a total of 120 miles,

Mathematics
2 answers:
ololo11 [35]3 years ago
3 0
He drove 30 miles in 1 hour
mr Goodwill [35]3 years ago
3 0

Answer: 30

Step-by-step explanation:

Devon drove 30 miles in 1 hour because 120/4 is 30

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Solve for x. Assume that lines which appear tangent are tangent. X=
Orlov [11]

Answer:

x = 32

Step-by-step explanation:

(whole secant) x (external part) = (tangent)^2

(x+18) * 18 = 30^2

(x+18) * 18 = 900

Divide each side by 18

(x+18) * 18/18 = 900/18

(x+18)  = 50

Subtract 18 from each side

x+18-18 = 50-18

x=32

5 0
3 years ago
Read 2 more answers
Which expression represents the surface area of the regular square pyramid shown?
aliya0001 [1]

Answer:

b^2 +2bl

Step-by-step explanation:

B = base length

L = slant height

The equation is for a regular square pyramid surface area

3 0
3 years ago
Samir paid 15.50 in shipping charges on a package that weighed 20 pounds. If shipping costs certain set amount per pound, what s
arsen [322]
He would pay 38.75 on the 50 pound package. Hope it helps!
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3 years ago
A snail is moving along a path that is 4 meters long. The snail moves at an average rate of 3 3/10 inches per minute. Question 1
Troyanec [42]

Answer: The length of the path = 157 inches { approx}

Step-by-step explanation:

Given: The length of the path = 4 meters

1 meter = 100 centimeters

So 4 meters = 400 centimeters

Also 1 in. ≈ 2.54 cm

\Rightarrow\ 1 cm = \dfrac{1}{2.54}\ in.

Now, \text{ 400 centimeters}=400\times\dfrac{1}{2.54}\text{ inches}

=157.480314961\approx 157  \ \ \ \ \ \text{ [Rounded to the nearest inch.]}

Hence, the length of the path = 157 inches { approx}

5 0
2 years ago
I have been struggling at this please help
Taya2010 [7]

Answer:

21

Step-by-step explanation:

I shall change the pictures to letters

a + a + b = 40 --(1)

b - c = 7 --(2)

c + a = 19 --(3)

a - c + b = ?

From (1):

2a + b = 40

b = 40 - 2a --(4)

From (2):

b = 7 + c --(5)

Sub (4) into (5):

40 - 2a = 7 + c

c = 33 - 2a --(6)

Sub (6) into (3):

33 - 2a + a = 19

a = 14

Sub a = 14 into (4) and (6):

b = 40 - 2(14) = 12

c = 33 - 2(14) = 5

therefore, a - c + b = 14 - 5 + 12 = 21

Topic: simultaneous equations

If you would like to venture further into mathematics, you can check out my Instagram page (learntionary) where I post notes and mathematics tips. Thanks!

5 0
3 years ago
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