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3 years ago

Help it’s easy math but still

Mathematics

2 answers:

I am Lyosha [343]3 years ago

7 0

I think the way that you do is 5/5+3=5/8

5/8*4=2.5 so 2.5 is the answer

omeli [17]3 years ago

6 0

Answer:

The answer 2.5 Gallons

Hope this helps :)

Step-by-step explanation:

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A $310 suit is marked down by 10%. Find the sales price.

Angelina_Jolie [31]

Answer:

The sale price is $279.

Step-by-step explanation:

$310-10%=$279

4 0

3 years ago

The rental rates at snappy center are $30 per day plus 0.25 we mile for each mile driven . Joe rented a car for one day and drov

Oksana_A [137]

Joe paid $105.00. He drove 300 miles at $.25 per mile which equals $75.00. Adding the $30.00 per day charge for 1 day to the $75.00 gives us the answer of $105.00.

7 0

3 years ago

The altitude of a triangle is increasing at a rate of 1.5 1.5 centimeters/minute while the area of the triangle is increasing at

seraphim [82]

Answer:

The base reduces at 3.75cm/min

Step-by-step explanation:

Given

Let

$h \to altitude$

$b \to base$

$A \to Area$

So:

$\frac{dh}{dt} = 1.5cm/min$

$\frac{dA}{dt} = 1.5^2cm/min$

The area of a triangle is:

$A = \frac{1}{2}bh$

Calculate b when $A =88cm^2; h =8cm$

$A = \frac{1}{2}bh$

$88=\frac{1}{2} * b * 8$

$88 =b * 4$

Solve for b

$b = 88/4$

$b = 22$

We have:

$A = \frac{1}{2}bh$

Differentiate with respect to time

$\frac{dA}{dt} =\frac{1}{2}(h\frac{db}{dt} + b\frac{dh}{dt})$

Substitute the following values in the above equation

$\frac{dh}{dt} = 1.5cm/min$ $\frac{dA}{dt} = 1.5^2cm/min$ $b = 22$ $h = 8$

$1.5 = \frac{1}{2}(8 * \frac{db}{dt} + 22 * 1.5)$

Multiply both sides by 2

$3 = 8 * \frac{db}{dt} + 22 * 1.5$

$3 = 8 * \frac{db}{dt} + 33$

Collect like terms

$8 * \frac{db}{dt} = 3 -33$

$8 * \frac{db}{dt} = -30$

Divide both sides by 8

$\frac{db}{dt} = -\frac{30}{8}$

$\frac{db}{dt} = -3.75$

4 0

2 years ago

What is the area of this parallelogram? ____sq ft

shutvik [7]

Answer:

A=8.6

Step-by-step explanation:

b Base 4.3

h Height 2.0

Thus: 2*4.3 = 8.6

5 0

3 years ago

Read 2 more answers

15/23 Marks

olganol [36]

Answer: a) 6, 0, 10 b) yellow/orange line

Step-by-step explanation:

a) Plug the x in the y functions, y = 2x² + x

when x = -2, y = 2(-2)² + (-2) = 8 - 2 = 6

when x = 0, y = 2(0)² + (0) = 0 + 0 = 0

when x = 2, y = 2(2)² + (2) = 8 + 2 = 10

b) By looking the table, the equation has a point (0,0), only blue and yellow/orange line has the passed the point (0,0), so we delete the red line option.

And we choose a point (1,3), then only yellow/orange line has passed the point (1,3). So the yellow/orange line fits the equation.

3 0

2 years ago