please help, brainliest, five star, thanks

Answer:

64.3 Per hour

Step-by-step explanation:

If you divide 321.5 miles by 5 you get 64.3 per hour and to check you could times 64.3 by 5 to get 321.5

321.5 / 5 = 64.3

64.3 x 5 = 321.5

Answer:

2

Step-by-step explanation:

Given the function

f(x) = x^3 − x + 4 in the interval [1,2]

We are to find the value of x for which f(x) = 7

Substitute f(x) = 7 into the expression as shown!

f(x) = x^3 − x + 4

7 = x^3 − x + 4

x^3 − x + 4 -7 = 0

x^3 − x - 3= 0

x^3 -x = 3

x(x²-1) = 3

x²-1 = 3 and x = 3

x² = 3+1

x² = 4

x = ±√4

x = ±2

Since x lies within the interval, [1,2] hence the value of x is 2

Answer:

h

Step-by-step explanation:

Answer:

Muitiplication

Step-by-step explanation:

12x42=504

I would perform the multiplication (12 × 16) last.

Answer:

3 2/5 divided by 3 1/6 = 106/95 = 1 11/95

Step-by-step explanation:

3 2/5 divided by 3 1/6 =

17/5 divided by 19/6 =

17/5 x 6/19 =

106/95 =

1 11/95

Answer:

answer C

Step-by-step explanation:

Answer:

opt B

Step-by-step explanation:

A=pi times radius squared

A=pi times 4.5 squared

4.5 is half of 9

proof 9/2

Answer:

x = 16

Step-by-step explanation:

Hope this helps!!

Answer:

3

Step-by-step explanation:

if B has 30% more than A then 1.3 multiplied by 10= 13

so B contains 13 cups

13-10 is how many more B has than A

so the answer is 3

Answer: 9[tex]\pi[/tex]

Step-by-step explanation:

Sorry the pi sign looks weird. The formula for area of a circle is [tex]a=\pi r^2[/tex], so we have to substitute the radius with 3. The square of 3 is 9, so the answer is 9pi.

Answer:

Item 1: -3,3.5

Item 2: -3,1

Item 3: -1,-2.5

Item 4: 2.25,-1

Answer:

item 1. (3,3.5 )

item 2. ( 3, 1 )

item 3. (-1 , -2.5)

item 4. ( 2 , -1 )

Step-by-step explanation:

Answer:

Step-by-step explanation:

The steeper the line (graph), the greater the slope and the greater the speed of that particular car.  It is instantly obvious that of the two lines shown, the yellow graph has the greater slope and thus the greater speed.

"The steeper the line, the greater the slope(speed).  "Car 1 is moving at a speed than car 2."

Answer:

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Step-by-step explanation:

Answer:

(2n 2+5n−4)⋅(n+1)

Step-by-step explanation:

STEP

1:Equation at the end of step 1

 (((4•(n2))+3n)+((2•(n3))-4))+(3n2-2n)

STEP 2:Equation at the end of step 2

 (((4•(n2))+3n)+(2n3-4))+(3n2-2n)

STEP 3:Equation at the end of step 3:

 ((22n2 +  3n) +  (2n3 - 4)) +  (3n2 - 2n)

STEP 4:Checking for a perfect cube

4.1    2n3+7n2+n-4  is not a perfect cube

Answer:

(2,2)

Step-by-step explanation:

Answer:

I would have to say D.

Step-by-step explanation:

Sorry if I'm wrong

Answer:

the answers are 51 and 11

Answer:first number is 51 second number is 11

Step-by-step explanation:

Step-by-step explanation:

1/2 × (p+9) is the algebraic expression.

Answer:

The coordinates of point P along AB is (1,6.5)

Step-by-step explanation:

We shall use the internal division formula to split AB in the ratio 1 to 3

Mathematically, that would be;

(x,y) = (nx1 + mx2)/m + n , (ny2 + my1)/m + n

m = 1 , n = 3

(x1,y1)= (-1,2)

(x2,y2) = (7,8)

(x,y) = (3(-1) + 1(7)/1+3 , (3(8) + 1(2)/1+3

(x,y) = (-3 + 7)/4, (24 + 2)/4

(x,y) = 4/4 , 26/4

(x,y) = (1, 6.5)

Answer:

False

Step-by-step explanation:

Answer:

Y = 2x + 4

Step-by-step explanation:

The slope (rise / run) is 2 and the y-intercept is 4.

Hope this helps. Pls give brainliest.

i solved the last 3 d is extra

Answer:

d

Step-by-step explanation:

Answer:

46/5 hope it helps!

Step-by-step explanation:

9x5= 45

45+1= 46

46/5

Answer:

3/5 cup

Step-by-step explanation:

I start by changing the initial fraction of 3/4 into its decimal form of .75 so that it's easier to divide. I then divide it by 5 to find how much carbonated water you should use for a single cup of juice, which is .15 cups. Then, I multiply .15 times 4, which comes out to be .6, or 3/5.

Answer:

3/4 cups of carbonated water is needed by Andy to prepare 5 cups of fruit juice that means that he uses

(3/4)/5 = 3/20 cups of carbon. water for one cup of fruit juice for 4 cups he has to use (3/20)4=12/20

or 3/5 cups of carbonated water or in decimal form 0.6 cups

Step-by-step explanation:

There u go

Answer: [tex]2x^2-7x=72[/tex] , where  x= width of the rectangle ( in inches).

Step-by-step explanation:

Let x= width of the rectangle ( in inches).

Then its length =  2x-7 ( in inches).

Area of rectangle = Length × width

= (2x-7) × (x)

= 2x × x -7 ×x

= 2x²-7x

The area of the rectangle is 72 square inches.

[tex]\Rightarrow\ 2x^2-7x=72[/tex]

Hence, the equation that represents the given situation :

[tex]2x^2-7x=72[/tex]

Answer:

The plumber worked for 6 hours.

Step-by-step explanation:

400-250=150

150/25=6

Answer:

y = 72°, x = 36°

Step-by-step explanation:

Step 1:

2x + 3x = 180°         Supplementary ∠'s

Step 2:

5x = 180°         Combine Like Terms

Step 3:

x = 180° ÷ 5         Divide

Step 4:

x = 36°      

Step 5:

3x + y = 180°        Supplementary ∠'s

Step 6:

3 ( 36 ) + y = 180°      Input x value

Step 7:

108° + y = 180°       Multiply

Step 8:

y = 180° - 108°         Subtract

Answer:

y = 72°, x = 36°

Hope This Helps :)

Answer:

3

Step-by-step explanation:

i just took the test and put 2 and that was wrong

SLOPE: negative slope

ANSWER: x = -2/3y + 2

hope this helped

Answer:cxwqashujk

Step-by-step explanation:

Answer:

Step-by-step explanation:

The constants p, q, r when

The least value is at vertex of the parabola ax² + bx + c, with positive a

x and y -coordinates of the vertex is:

The vertex form is:

Applying the same formula to our equation:

The constants p, q and r are: