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liubo4ka [24]
3 years ago
7

HEEEELP PLEASE I NEED HELP DONT SAY "I DONT KNOW" PLEASE

Mathematics
2 answers:
BaLLatris [955]3 years ago
8 0

Answer:

B. 4 hours

Step-by-step explanation:

If the distance is total of 56 miles and he travels 14 miles per hour,

divide 56/14

56/14=4

4 hours to complete the 56-mile race

goblinko [34]3 years ago
6 0

Step-by-step explanation:

Time taken to complete the race

= Distance / Speed

= 56 miles / (14 miles/hr)

= 4 hours. (B)

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WILL GIVE BRAINLIEST
galina1969 [7]

Answer:

x= 3 inches

Step-by-step explanation:

-The volume of a box is given by the formula:

V=lwh\\\\l-length\\w-width\\h-height

-We are given the dimensions h=x+2, l=2x+5 and w=4x-1.

We substitute this values in the formula and equate to the volume value.

V=lwh\\\\605=(x+2)(2x+5)(4x-1)\\\\605=8x^3+34x^2+31x-10

#We take the values to the same side and equate to zero;

8x^3+34x^2+31x-615=0\\\\\\\#Factor\\\\\\(x-3)(8x^2+58x+205)=0

#Applying the zero factor principal to obtain the different values of x:

(x-3)=0\\\\\therefore x=3\ \ \ \ \ \ ...i\\\\(8x^2+58x+205)=0

#We use the quadratic formula to solve the two other values of x:

(8x^2+58x+205)=0\\x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\=\frac{-58\pm\sqrt{58^2-4\times 8\times 205}}{2\times 8}\\\\x=-3.625+3.533i \ and \ x=-3.625-3.533i

The two other values are negatives. Ignore them since length cannot be a negative.

The only reasonable value of x is x=3

#We substitute in the formula to validate:

V=lwh\\\\=(x+2)(2x+5)(4x-1)\\\\=(3+2)(2*3+5)(4*3-1)\\\\=605

Hence, the value of x is 3 inches

7 0
3 years ago
What is the value of x in the figure at the right?
ollegr [7]

Answer:

x=11

Step-by-step explanation:

It seems that the two angles are supplementary.  Soo they add up to 180

Thus,

15+15x=180

Solve for x...

15x=165

x=11

Hope this helps!!!

4 0
2 years ago
#3
musickatia [10]
The answer is C. $7.65! Hope this helps(:
3 0
3 years ago
If Mitchell ate 45 hotdogs in 3 minutes at the annual hot dog eating contest. What is Mitchell’s unit rate?
aleksandrvk [35]
15 hotdogs per minute
4 0
3 years ago
Read 2 more answers
Alan can do 2/3 part of his work and sam can do 3/4 part of her work .Who can do more work​
guajiro [1.7K]

Answer:

Sam can do more work.

Step-by-step explanation:

2/3 equals out to just over half of his work done. 0.66666667.

3/4 equals out to almost all of her work done. 0.75.

*hope this helps*

8 0
3 years ago
Read 2 more answers
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