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Tpy6a [65]
3 years ago
14

:D please help mee☺️

Mathematics
2 answers:
alekssr [168]3 years ago
7 0

Answer:

<7=115 degrees

Step-by-step explanation:

Since <8 = 65 degrees, and <7 and <8 are straight angles, then 180-65 = 115

Pachacha [2.7K]3 years ago
5 0

Answer:

115

Step-by-step explanation:

The angle of a straight line is 180°. so all you have to do is subtract 65 from 180 and get 115.

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If AB =5x+2 and XZ =4x-5 what is the actual length of AB
shepuryov [24]
Since AB is twice the size of XZ (according to geometry) then you multiply XZ by 2. Then you make that value = to AB and solve
So the answer is B.
4 0
3 years ago
A 45°angle is complementary to an angle measures ×°.Write an equation that represents this situation.
stira [4]

Answer:

45° + x° = 90°

Step-by-step explanation:

Two angles are complementary if the sum of the angles is equal to 90 degrees. we can also said that if we had two angles A and B and these angles are complementary, the equation that represent this situation is:

A + B = 90°

Then, if a 45°angle is complementary to an angle measures ×°, the equation that represents this situation is:

45° + x° = 90°

Therefore, solving for x°, we get:

45° + x° - 45° = 90° - 45°

x° = 45°

it means that a 45°angle is complementary to an angle measures 45°

3 0
3 years ago
Read 2 more answers
-6 George has a choice of a $7,200, simple interest loan at 3.8% that he has to start paying back after 3 years, or a $7,500, an
Levart [38]

Answer:

Compound interest; $5.42

Step-by-step explanation:

3 0
3 years ago
The GPA of accounting students in a university is known to be normally distributed. A random sample of 20 accounting students re
Vladimir79 [104]

Answer:

The 95% of confidence intervals

(2.84 ,2.99)

Step-by-step explanation:

A random sample of 20 accounting students results in a mean of 2.92 and a standard deviation of 0.16

given small sample size n =20

sample mean x⁻ =2.92

sample standard deviation 'S' =0.16

level of significance ∝ =  0.95

The 95% of confidence intervals

x^{-}  ± t_{\alpha } \frac{S}{\sqrt{n} }

the degrees of freedom γ=n-1 =20-1=19

t-table 2.093

(x^{-}  - t_{\alpha } \frac{S}{\sqrt{n} },x^{-}  + t_{\alpha } \frac{S}{\sqrt{n} })

(2.92 - 2.093(\frac{0.16}{\sqrt{20} } ,2.92+2.093(\frac{0.16}{\sqrt{20} } )

(2.92-0.0748,2.92+0.0748)

(2.84 ,2.99)

Therefore the 95% of confidence intervals

(2.84 ,2.99)

4 0
3 years ago
How do you find the x-intercepts and y-intercepts of trinomials. E.g.(x^2-10x+25) How do you find the x-intercepts and y-interce
Dominik [7]
The x-intercepts<span> are where the graph crosses the x-axis, and the y-</span>intercepts<span> are where the graph crosses the y-axis. We find these intercepts when we set one variable to zero. For instance, 
</span><span>
y = x^2-10x+25

y-intercept : y = </span>0^2-10(0) +25
                     <span> y = 25

x-intercept: 0 = </span>x^2-10x+25
                     0 = (x - 5) (x - 5)
                     x = 5
3 0
3 years ago
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