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2 years ago

Really confused on this.

Mathematics

2 answers:

Marina CMI [18]2 years ago

8 0

Answer:

Step-by-step explanation:

Lets look at A. In A, It says 0.510 is greater than 0.510. That is not true becuase both are equal. A is false.

Lets look at B. In B, it says 0.501 is less that 0.510. This is true. 501 is less than 510. B is true.

Lets look at C. In C, it says 0.061 is greater than 0.510. This is not true becuase 61 is not greater than 510. C is false.

Lets look at D. In B, it says that 0.500 is greater than 0.510. This is not true becuase 500 is less than 510. D is false.

B is the correct answer. I hope this helps! Let me know if I got something wrong so I can fix it.

prohojiy [21]2 years ago

7 0

Answer:

it is C.

Step-by-step explanation:

trust me, i dont have time to expln how, it jst is

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yuradex [85]

Answer:

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Step-by-step explanation:

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2 years ago

If you were to solve the following system by substitution, what would be the best

xxMikexx [17]

To solve the two equations simultaneously using the substitution method we need to rearrange one of the equation to make either $'x'$ or $'y'$ the subject.

We can try in turn rearranging both equations and see which unknown term would have been easier to solve first

Equation $2x+8y=12$

Making $'x'$ the subject
$2x=12-8y$ , dividing each term by 2
$x=6-4y$ ⇒ (Option 1)

Making $'y'$ the subject
$8y=12-2x$ , multiply each term by 8 gives
$y= \frac{12}{8} - \frac{2}{8}x$ ⇒ (Option 2)

Equation $3x-8y=11$
Making $'x'$ the subject
$3x=11+8y$ , divide each term by 3
$x= \frac{11}{3}+ \frac{8}{3}y$ ⇒ (Option 3)

Making $'y'$ the subject
$8y=3x-11$ , divide each term by 8
$y= \frac{3}{8}x- \frac{11}{8}$ ⇒ (Option 4)

From all the possibilities of rearranged term, the most efficient option would have been the first option, from equation $2x+8y=12$ with $'x'$ as the subject, $x=6-4y$

3 0

3 years ago

Read 2 more answers

I NEED HELP! Write an equation in standard form of the line

nadezda [96]

Answers:

First box = 1
Second box = -5
Third box = -15

This forms the equation 1x-5y = -15, which is the same as x-5y = -15

=================================================================

Explanation:

Let's find the slope. I'll pick the first two rows to form the two points needed

(x1,y1) = (0,3)

(x2,y2) = (10,5)

These are then plugged into the slope formula.

m = slope

m = (y2-y1)/(x2-x1)

m = (5-3)/(10-0)

m = 2/10

m = 1/5

m = 0.2

The y intercept is b = 3 since this is the y value when x = 0.

With m = 0.2 and b = 3, we go from y = mx+b to y = 0.2x+3

Let's multiply both sides by 5 to turn that decimal value into a whole number. I'm picking 5 since 0.2 = 1/5

So we get

y = 0.2x+3

5y = 5*(0.2x+3)

5y = 5*0.2x+5*3

5y = x+15

Now let's get x and y together, but move that 15 to its own side

5y = x+15

x+15 = 5y

x = 5y-15

x-5y = -15

This is one way to write the equation in standard form.

Standard form is Ax+By = C, where A,B,C are integers. Some math textbooks insist that A > 0. In this case, A = 1, B = -5, and C = -15.

----------------------

As a way to check, we can plug in (x,y) = (15,6) from the third row of the table to see that..

x-5y = -15

15-5(6) = -15

15 - 30 = -15

-15 = -15

This verifies the third row. I'll let you check the first two rows of the table to fully confirm this equation works.

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2 years ago

It costs $32 per day to rent a medium-sized car, plus $0.25 for each mile driven over 150 miles. The equation that represents th

Olin [163]

Answer:

Read explanation

Step-by-step explanation:

A)The slope is the number before the X so 0.25, this represents the amount of money people have to pay for each mile driven over 150 miles.

B) The y-intercept is the number after the X so 32, this number represents the amount people have to pay rent the car before actually using it.

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2 years ago

Molly can bake 3 cakes in 2 hours. How many cakes can she bake per hour?

just olya [345]

Answer: 1.5 cakes per hour

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3 years ago

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