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3 years ago

Please help with this question!!!

Mathematics

1 answer:

kondor19780726 [428]3 years ago

7 0

It’s the first one (2,2)(3,5)(4,0)

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Solve for x. x−1/4=3/8

valentinak56 [21]

x=5/8 is the correct answer. First you had to simplify from both sides of equation, and it gave us, $x+\frac{-1}{4}=\frac{3}{8}$ . Then you add 1/4 from both sides of equation, and it gave us, $x+\frac{-1}{4}+ \frac{1}{4}= \frac{3}{8}+ \frac{1}{4}$ . And it gave us the answer is x=5/8 is the final answer. Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie

3 0

3 years ago

3. A regular hexagon has six equilateral triangles with a common

hichkok12 [17]

Answer:

if the height of the triangle is 8 in, its side is 9.2379, and this side is also the side of the hexagon, so the perimeter is 6*9.2379 = 55.43 in

Step-by-step explanation:

As the hexagon is regular, each of those triangles will also be regular.

So if the height of one triangle is 8 inches, we can find the side of the triangle with the height formula of a regular triangle:

height = side * sqrt(3)/2

8 = side * 0.866

side = 8/0.866 = 9.2379

The side of the triangle will also be the side of the hexagon. So the perimeter of the hexagon will be:

P = 6 * 9.2379 = 55.43 inches

8 0

3 years ago

Could someone help me understand how to solve this?

monitta

Answer:

Amount in 4% account: $550

Step-by-step explanation:

Use simple interest formula $I=P\cdot r\cdot t,$ where

I = interest

P = principal

r = rate (as decimal)

t = time.

4% account:

$P_1=x\\ \\r_1=0.04\\ \\t_1=1,$

then

$I_1=x\cdot 0.04\cdot 1=0.04x$

5% account:

$P_2=1,500-x\\ \\r_2=0.05\\ \\t_2=1,$

then

$I_2=(1,500-x)\cdot 0.05\cdot 1=0.05(1,500-x)$

You have earned $69.50 in total, so

$I_1+I_2=69.50\\ \\0.04x+0.05(1,500-x)=69.50\\ \\4x+5(1,500-x)=6,950\\ \\4x+7,500-5x=6,950\\ \\4x-5x=6,950-7,500\\ \\-x=-550\\ \\x=550\\ \\1,500-x=1,500-550=950$

Amount in 4% account: $550

Amount in 5% account: $950

8 0

3 years ago

Factor the quadratic equation 0=15x squared + 39 x-18

leva [86]

Answer:

The factors of given quadratic equation

$x = \frac{9}{15} and x = -2$

Step-by-step explanation:

Explanation:-

Given quadratic equation 15x² +39 x -18 =0

The factors of 270 = 30 × 9

The quadratic equation 15x² +39 x -18 =0

⇒ 15 x² +30 x-9x -18=0

⇒ 15x(x+2) -9( x+2) =0

⇒( 15x -9)(x+2) = 0

15x - 9=0 and x+2 =0

15 x =9 and x = -2

$x = \frac{9}{15} and x = -2$

3 0

3 years ago

You have a triangular-shaped pennant hanging on your wall. The base of the pennant. Is 18 inches. The height is 1 foot. How much

EleoNora [17]

Answer:

Step-by-step explanation:

18 times 1

then divided by 2

is 9

6 0

4 years ago