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2 years ago

Find the value of x need help

Mathematics

1 answer:

amm18122 years ago

5 0

Answer:

x=-10

Step-by-step explanation:

since there's a given 120 degrees, and it's a isosceles triangle, we know that the line adds up to 180 (where the 120 degrees is). so 120+x=180, the interior angle measures 60 degrees. That being said, the 3 angles measure 60 degrees also. now there's a right angle mark on top, so we find the angle of the smaller triangle (near angle 2) by doing 90-60=30 degrees.

angle 2 is said to be x+160, and there's a line, which tells us that they must add to 180.. so x+160+30=180

x+190=180

x=-10.

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20 points!<br> I need help (asap!!)

EastWind [94]

Answer:

Step-by-step explanation:

We know that the medians of the triangle divides in a ratio of 2:1. Therefore we have the equation:

$\dfrac{9x-9}{2x+8}=\dfrac{2}{1}$ <em>cross multiply</em>

$1(9x-9)=2(2x+8)$ <em>use distributive property a(b + c) = ab + ac</em>

$9x-9=(2)(2x)+(2)(8)$

$9x-9=4x+16$ <em>add 9 to both sides</em>

$9x=4x+25$ <em>subtract 4x from both sides</em>

$5x=25$ <em>divide both sides by 5</em>

$\boxed{x=5}$

$OB=9x-9\to OB=9(5)-9=45-9=\boxed{36}$

$OE=OB:2\to OE=36:2=18\to BE=BO+OE\to BE=36+18=54$

8 0

3 years ago

Which inequality represents this situation? The number of students, s, who ride in a bus is less than 30. A. S < 30 B. S >

mezya [45]

Answer:

A.s<30

Step-by-step explanation:

We are given that

Number of students who ride in a bus=s

We have to find the inequality which represents the given situation.

According to question

s<30

A.s<30

It is true.

B.s>30

It is false because s is less than 30

C. $s\geq 30$

It is false because s<30

D. $s\leq 30$

It is false because s<30

Option A is true.

7 0

2 years ago

The top one please, HELP!!

Rainbow [258]

A is the correct answer

6 0

3 years ago

In a direct current circuit , voltage equals current (I) times resistance (r). If the current in a circuit is 2 Amperes and the

sergiy2304 [10]

Answer:

x + 2 Volts

I got this correct on a quiz

Sorry for the late answer, hope it still helps!

8 0

2 years ago

In 1 Kings 7:26, the capacity of the molten sea, a furnishing of the temple, is given as 2000 baths. One bath is about 8.92 gal.

Maksim231197 [3]

Answer:

67.53 kiloliters.

$20\%\text{ of }\$7.95=\$1.59$

Step-by-step explanation:

We have been given that the capacity of the molten sea, a furnishing of the temple, is given as 2000 baths.

First of all, we will convert 2000 baths into gallons by multiplying 2000 with 8.92.

$2000\text{ Baths}\times \frac{\text{8.92 gallons}}{\text{Bath}}=2000\times{\text{8.92 gallons}=17,840{\text{ gallons}$

We know that 1 gallon equals 0.00378541 kiloliters, so we will multiply 17,840 by 0.00378541.

$17,840{\text{ gallons}\times \frac{\text{0.00378541 Kiloliters}}{\text{gallon}}$

$17,840\times 0.00378541\text{ Kiloliters}$

$67.5317144\text{ Kiloliters}\approx 67.53\text{ Kiloliters}$

Therefore, the Molten sea hold 67.53 kiloliters.

We can find 20% of $7.95 as shown below:

$20\%\text{ of }\$7.95=\frac{20}{100}\times\$7.95$

$20\%\text{ of }\$7.95=0.20\times\$7.95$

$20\%\text{ of }\$7.95=\$1.59$

Therefore, 20% of $7.95 would be $1.59.

3 0

2 years ago