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Flura [38]
3 years ago
15

I need help with 6-9 it’s algebra :)

Mathematics
1 answer:
Fiesta28 [93]3 years ago
5 0
6
Answer: The worm slithers 48 inches in an hour. The snail slithers 52 inches in an hour.
If we start by making both the races into equations we get 5w+4s=448 inch and 2w+3s=252 inch. If we then add both the equations together we get 7w+7s=700 inch. Then we divide it all to get 1w+1s=100 inch. Then we can subtract the second race from the first to get 3w+1s=196 inch. We now know that 2w=96 inch, and can therefor divide whit 2 to find out w=48. We can then figure out how fast the snail is moving by multiplying 48 whit w and dividing the answer by s.

7
A 3 scoops $1.28 2 scoops $.87 1.28-.87= 41 .87-.41-.41= 06. A cone costs $.06 and one scoop ice cream costs $.41
B. .06+.41•4=$1.70

8
A. Delivery is $20. One cord is $120.
B. 1 1/2 cord costs $200. ($180 for the cords and $20 for the delivery)

9
Can’t see full question.
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Simplify completely the quantity 4 times x to the third power plus 5 times x to the 2nd power plus 3 times x all over x. (2 poin
julia-pushkina [17]

We start with

\dfrac{4x^3+5x^2+3x}{x}

We can factor x at the numerator:

\dfrac{x(4x^2+5x+3)}{x}

So, assuming x\neq 0 (otherwise the expression would make no sense) we can simplify it:

\dfrac{x(4x^2+5x+3)}{x} = 4x^2+5x+3

This equation has no roots, so we can't simplify it any further.

5 0
3 years ago
write the standard form of the equation of the circle with endpoints of a diameter at the points (9,2) and (-7,5)
AnnyKZ [126]

Answer:

Step-by-step explanation:

Answer:

(x-1)²+(y-3.5)² = 265/4

Step-by-step explanation:

first find the midpoint (center of the circle)

(9+-7)/2, (2+5)/2

(1, 3.5) = center

then distance formula to find diameter

√(9- -7)²+(2-5)²=√256+9 = √265

The radius is half the diameter = (√265)/2

Formula for circle is (x-h)²+(y-k)²=r², where (h, k) is the center

Now you can plug everything in.

(x-1)²+(y-3.5)² = 265/4

4 0
3 years ago
5.) Simplify the following polynomial. -6x3+5x-3-(2x3+4x2-3x+1)
Vera_Pavlovna [14]

Answer:

-8x3 - 4x2 + 8x - 4

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The faces on a number cube are labled 1,2,2,3,4, and 5the number cube is rolled 114 times how many times would you expect the nu
Mrac [35]

Given:

The faces on a number cube are labeled 1,2,2,3,4, and 5.

The number cube is rolled 114 times.

To find:

How many times would you expect the number 2 to appear?

Solution:

We have,

Total outcomes = 1,2,2,3,4, and 5.

Number of total outcomes = 6

Favorable outcomes = 2 and 2

Number of favorable outcomes = 2

The probability of getting 2 is:

P(2)=\dfrac{\text{Number of favorable outcomes}}{\text{Number of total outcomes}}

P(2)=\dfrac{2}{6}

P(2)=\dfrac{1}{3}

Now, the expected number of times when 2 to appear is:

E(x)=114\times P(2)

E(x)=114\times \dfrac{1}{3}

E(x)=38

Therefore, the expected number of times is 38.

4 0
2 years ago
Write a subtraction fact with the same difference as 16-7
Alex73 [517]

Answer:

10-1

Step-by-step explanation:

8 0
3 years ago
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