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3 years ago

25x^2+40x+16=28Ansa ASAP

1 answer:

8 0

Solution:
1. Move all terms to one side
<span>25{x}^{2}+40x+16-28=0</span> 2. Simplify <span>25{x}^{2}+40x+16-28 to <span>25<span>x<span><span>2</span><span></span></span></span>+40x</span></span><span><span>−12</span></span>
<span>25{x}^{2}+40x-12=0</span> 3. Apply the Quadratic Formula<span>x=\frac{-40+20\sqrt{7}}{50},\frac{-40-20\sqrt{7}}{50}

</span> 4. Simplify solutions
<span>x=-\frac{2(2-\sqrt{7})}{5},-\frac{2(2+\sqrt{7})}{5}</span> Done!

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Q1. Prasha has five blocks of wood. The total weight of all five blocks of wood is 3 kilograms. 4 of the blocks of wood each hav

harina [27]

Answer: Weight of the remaining block of wood =400g

Step-by-step explanation:

Total Weight of five(5) blocks = 3kg = 3000g

Weight of 4 out of the 5 blocks = 650x 4= 2600g

Weight of the remaining block of wood =Total Weight of five(5) blocks-Weight of 4 out of the 5 blocks

= 3000g-2600g

=400g

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3 years ago

Complete the following item based on the given information. The volume of a box(V) varies directly with its length(l). If a box

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Step-by-step explanation:

Below is an attachment containing the solution.

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3 years ago

Find the slope of the line passes through the points (2, 5) and (9, 8).

Brilliant_brown [7]

The correct option is 3/7

Step by Step Explanation:

<h3>Given:</h3>

line passing through points (2,5) and (9,8)

Slope of the line

<h3>Solution:-</h3>

Here, to find the slope of line passing through two points x₁,x₁ and y₁,y₂ is given by:-

$\sf m=\frac{y_2 - y_1}{x_2 - x_1}$

where,

x₁ = 2

x₂ = 9

y₁ = 5

y₂ = 8

Therefore putting the values , we get

$\sf \: m=\frac{y_2 - y_1}{x_2 - x_1} \\ \\ : \longrightarrow \: \frac{8 - 5}{9 - 2} \\ \\ : \longrightarrow \: \frac{3}{7}$

<u>Hence, the slope of line passes through the points (2, 5) and (9, 8) is 3/7.</u>

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3 years ago

There are 1644 students in central high school. There are 50 more girls then boys. How many boys are there ?

forsale [732]

The answer is 797 boys

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4 years ago

Please help??? thanks!!!

Burka [1]

I believe its d because you subtract (-3 -7 1 9) from both sides

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3 years ago