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3 years ago

X /− 8 + 9 = 43 x = ? Solve for x Round to the nearest 100th if needed.

Mathematics

1 answer:

sashaice [31]3 years ago

7 0

Answer:

I love algebra anyways

The ans is in the picture with the steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

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The interior angles of a triangle are 60,45and 75.the shortest side is 10cm less than the longest side, determine the perimeter

masha68 [24]

Answer:

Step-by-step explanation:

We know that the permiter is defined as

$P=L+S+M$

Where $L$ is the longest side, $S$ is the smallest and $M$ is the middle side.

If $L=x$ then, $S=x-20$ , where we need to find an expression for $M$ using the law of cosines.

$M^{2} =L^{2}+S^{2}-2 \times L \times S \times cos(60\°)\\M=\sqrt{x^{2}+(x-20)^{2}-x(x-20)}\\M=\sqrt{x^{2} +x^{2}-40x+400-x^{2}+20x}=\sqrt{x^{2}-20x+400}$

Replacing all expression, the perimeter is

$P=x+x-20+\sqrt{x^{2}-20x+400}\\P=2x-20+\sqrt{x^{2}-20x+400}$

Using a calculator, the perimeter is 20 units centimeters.

7 0

3 years ago

The quadrilateral shown is a rectangle. What is m∠MJN?

Mkey [24]

Answer:

Well first you need to add the picture otherwise its useless to ask sorry bud :(

Step-by-step explanation:

4 0

3 years ago

a pen is randomly picked from a box that contains 12 red pen,13 blue pen and 5 black pen. calculate the probability of getting a

Firdavs [7]

12 plus 13 plus 5 is 30
5 divided by 30 is .16666667
Move the decimal get 16%

3 0

3 years ago

A certain state uses the following progressive

mart [117]

Answer: 52

Step-by-step explanation: it might not be it. GOD BLESS.

7 0

1 year ago

Someone help please

marta [7]

Answer:

565.6 ft³

Step-by-step explanation:

Volume = Rectangular prism + circular prism

= (6 x 6 x 11) + (3.14 x 3² x 6)

= 396 + 169.6

= 565.6

6 0

3 years ago

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