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4 years ago

What's the answer to this?

Mathematics

1 answer:

ycow [4]4 years ago

6 0

You have to add the area of each shape. The sides are
length x height = (12)(10)=120in²
the ends are width x height = (9)(10)=90in²
and the bottom is length x width = (12)(9)=108in²
Adding these up gives 318in²

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3. Write the function g(x) = -x2 - 4x in vertex form, using decimals as necessary.

Mice21 [21]

Answer:

The vertex form is $y=-(x+2)^2+4$

Step-by-step explanation:

8 0

3 years ago

Sam left for school at 8:00, walking at a speed of 2 mph. Soon after, his father discovered that Sam left behind his project tha

timofeeve [1]

We use the formula d = rt where d = distance, r = rate, t = time

Equation for Sam:
$d=( r_{1})(t)$
$d = 2t$

Equation for Sam's father:
$d = (r_{2})(t - 0.33)$
d = (12)(t - 0.33)
d = 12t - 4

Since Sam and his father have the same distance from their home to Sam's school, then
2t = 12t - 4
4 = 12t - 2t
4 = 10t
4/10 = t
t = 0.4 hrs or 24 mins

Sam travel 24 mins from home to school and his father travel 4 mins from home to school. Therefore, it was about 8:24 when Sam's father give the project to Sam.

7 0

4 years ago

Maureen went on a 3 day 50 mile trip. the first day she biked 17 7/8 miles . the second day she biked 18 5/7 miles. How many mil

Inessa [10]

To find the miles for 3rd day, we take away the miles she biked for the first two day from the total.

$50 - 17 \dfrac{7}{8} - 18\dfrac{5}{7}$

$=50 - 17 \dfrac{7 \times 7}{8 \times 7} - 18\dfrac{5 \times 8}{7 \times 8}$

$= 48 \dfrac{112}{56} - 17 \dfrac{49}{56} - 18\dfrac{40}{56}$

$= 13 \dfrac{23}{56} \text { miles }$

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Answer: She traveled 13 23/56 miles on the third day.
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7 0

4 years ago

Use slopes and y-intercepts to determine if the lines 6x+y=−1 and −2x−5y=1 are parallel.

kobusy [5.1K]

Answer:

The two lines are not parallel.

Step-by-step explanation:

Every linear equation follows this structure:

y = mx + b

y is the y value

x is the x value

m is the gradient/slope of the line

b (or sometimes c) is the y-intercept of the line

Firstly, we have to get the y term on one side by itself.

6x + y = -1

-6x -6x

y = -6x - 1

-2x -5y = 1

+2x +2x

-5y = 2x + 1

Secondly, we make it so the y term is just the y value.

The first equation is already like this, so we don't need to do anything to that.

-5y = 2x + 1

÷ -5 ÷ -5

y = (2x + 1) / -5

This can be expanded and simplified to:

y = -2/5x - 1/5

Thirdly, we have to compare the slopes and y-intercepts.

y = -6x - 1

y = 2/5x - 1/5

If the slopes are the same and the y-intercepts are different, they are parallel. However, the slopes are different, therefore they are not parallel.

7 0

3 years ago

Use <,> or = to compare the ratios. Show your work.<br><br> (b) 9/6 and 36/24

Ronch [10]

Answer:

They're both equal.

Step-by-step explanation:

If you simplify 36/24, its 3/2. (36 divided by 24 = 3/2.)

9/6 simplified is 3/2. (9 divided by 6 = 3/2.)

3/2 = 3/2.

4 0

2 years ago