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harkovskaia [24]
3 years ago
11

PLZ HURRY i dont have much time

Mathematics
2 answers:
diamong [38]3 years ago
6 0

Answer:

x=28

Step-by-step explanation:

use similarity and congrueny

natima [27]3 years ago
3 0

Answer:

uggggg is it ummm i dont really know sorry

Step-by-step explanation:

You might be interested in
The vertex angle of an isosceles triangle measures 26° . The base is 30 units long. What is the length of a leg of the isosceles
sergejj [24]

Answer:

65.46 units

Step-by-step explanation:

Given the information:

  • The vertex angle of an isosceles triangle measures 26°

=> the leg angle is:

= (180°  - 26° )/2

= 77°

  • The base is 30 units

Let x is the length of the leg side (x>0)

We use cosine law to find x, we have:

30^{2} = x^{2} +x^{2} -2xxCos(26) Because the  isosceles has two equal leg sides

<=> 30^{2} = 2x^{2} - 1.79x^{2}

<=> 0.21x^{2}  = 30^{2}

<=> x^{2} =4285

<=> x = 65.46 units

Hope it will find you well.

7 0
3 years ago
Kristen lives directly east of the park. The football field is directly south of the park. The library sits on the line formed b
klemol [59]

Imagine right triangle PHF, where P - park, H - home and F - football field, then PH, PF are legs and HF is hypotenuse . Denote point L to be library. You know that point L lies on the segment FH and FL=8, LH=2. Also you know that PL is an altitude to the hypotenuse.

Use the property of altitude drawn from the vertex of right angle to the hypotenuse (the length of the altitude is geometrical mean between legs' projections onto hypotenuse):

PL=\sqrt{HL\cdot LF},\\  PL=\sqrt{2\cdot 8}=\sqrt{16} =4 mi.

This means that the distance between park and libriry is 4 miles.

Consider right triangle PLF ( angle L is right angle and PF - hypotenuse). By the Pythagorean theorem,

PF^2=PL^2+LF^2,\\ PF^2=4^2+8^2,\\ PF^2=16+64=80,\\ PF=\sqrt{80} =4\sqrt{5} mi. The distance between park and football field is 4\sqrt{5} miles.

Answer: the distance between park and libriry is 4 miles and the distance between park and football field is 4\sqrt{5} miles.

6 0
3 years ago
Sensei Umeh’s ""Active Hands"" karate program grew from 8 members to 15 last week.  What is the percent of change? 
Tom [10]

Answer:

187.5% increase

Step-by-step explanation:

Percent change formula: \frac{x_{2}-x_{1}}{x_{1}}

Initially, the program had 8 members and ended with 15 so \frac{15-8}{8}=\frac{7}{8}=0.875=87.5

7 0
3 years ago
Which of the graphs below represents the equation 3x-2y=-12?
Sunny_sXe [5.5K]

Graph B would be the answer.

3x-2y=12

-2y=-3x+12

y=3/2x-6

6 0
4 years ago
13. The function y = 40(x - 1) + 70 can be used to determine the cost in dollars
mote1985 [20]

Step-by-step explanation:

the function actually is

y = 40(x - 1) + 70 = 40x - 40 + 70 = 40x + 30

still, the slope (the factor of x) is 40.

that means y (the cost) increases by 40 for every additional hour (x increases by 1).

so, the rate of change (slope) is 40/1 = $40 per hour.

4 0
3 years ago
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