Can any help me with these

Mathematics

2 answers:

NeTakaya3 years ago

6 0

4.) 1 mile = 5280 feet

I like to put the equation like this because it's much more easier:

1 mile = 5280 feet / ?? miles = 18,472

Multiply 5,280 by 18,472, and divide by 1 equals, 97,532,160 miles.

r-ruslan [8.4K]3 years ago

4 0

I can only clearly see #5.

A mile has 5,280 feet.

Divide 18,472 by 5,280.
18,472 / 5,280 = 3.5

18,472 feet is about 3.5 miles.

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Alright, here's one for Algebra:

Wewaii [24]

Let x= number rows
Then x + 5 = number of seats per row

x(x+5) = 126
X^2 + 5x = 126
x^2 + 5x -126 = 0; now factor or use quadratic:
(x+14)(x-9) = 0; so the answers are either -14, or 9, and since -14 is not possible in this case because you can't have a negative number of rows, the answer is 9 rows.

Check work: number of rows = 9, number of seats per row = 9+ 5= 14, and 9 x 14 = 126

3 0

2 years ago

When asked to write a point slope equation for a line passing through the points (-4,-7) and (3,2) a student wrote y-2=-9/7(x-3)

AleksAgata [21]

First let's find the slope
Slope formula:
$\frac{y_2-y_1}{x_2-x_1} =slope$
Given the two coordinates:
(-4,-7) (3,2)
x1,y1 x2,y2

Plug these numbers into the formula
$\frac{2-(-7)}{3-(-4)} = \frac{9}{7}$
In this case the mistake that was made was that the student wrote the slope negative instead of positive
Final answer:
<span>y-2=9/7(x-3)</span>

8 0

2 years ago

Maxwell buys a bag of dog food that contains 18 cups of food, Maxwell feeds his dog 1 cups each day. Maxwell says he will be abl

LenKa [72]

Answer:

Incorrect

Step-by-step explanation:

Well since there is only 18 cups of dog food he will only be able to feed his dog for 18 days since he feeds his dog 1 cup a day.

7 0

2 years ago

Read 2 more answers

What value of x is in the solution set of 8x-6 > 12 + 2x?<br> Оооо<br> 5