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likoan [24]
3 years ago
7

What is the size of the angle at the top labeled A?

Mathematics
2 answers:
PtichkaEL [24]3 years ago
8 0
The answer is 40 degrees. (:
Fiesta28 [93]3 years ago
5 0

All triangles have 180°.

As you can see from this triangle, it is an isosceles triangle, because the two angles are the same (I can assume that the two sides are, as well).

As we have two exterior angles that are perpendicular, we can assume that:

x + 110 = 180

x=70

The interior angles is 70 degrees.

We have two interior angles that are the same, so it totals up to 140 degrees.

As mentioned, a triangle has 180 degrees.

Let's use logic.

140 + x = 180

x= 40

The angle measures exactly 40 degrees.

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F(x)= -2(x-5)^2+8
geniusboy [140]
I don’t know all of it but....
Axis of symmetry is x=5
Vertex changed to (5,8)
Parabola opens down
4 0
3 years ago
4x-5y=13
love history [14]
Hello : 
<span>4x-5y=13...(1)
x+5y=-3...(2)
(1)+(2) : 5x = 10
x=2
subsct in (2) : 2+5y = -3
5y =-5
y = -1

</span>
8 0
3 years ago
I believe some of the brainly admins are abusing their power because they keep deleting my questions and I am not violating guid
VladimirAG [237]

I agree. Some people's questions keep getting deleted. Thanks you for bringing this up. Hopefully someone can contact the administrator.

6 0
3 years ago
Suppose that the auto loans from a bank are normally distributed with a mean of $23,334 and a standard deviation of 3,412. what
UkoKoshka [18]
To illustrate the information in the correct syntax:
X~N(23334, 3412²)
What we're being asked to find is P(X ≤ 26000).
In order to do this, we need to convert this value into one we can look up on the table for the standard normal distribution (Z).
To do this we use the formula:
Z = (X - μ)/σ
Z = (26000 - 23334)/3412 = 0.7813599... ⇒ 0.78
We can say:
P(X ≤ 26000) = P(Z ≤ 0.78) = 0.7823
4 0
3 years ago
Dave delivered 52 newspapers all together on Saturday and Sunday. He delivered 8 more newspapers on Sunday than on Saturday. How
Harman [31]
Let x=papers on Saturday and y=papers on Sunday

First make equations for the information given to you

x+y=52   (total papers)            and              y= x+8     (he sold 8 more on Sunday)

then since you know y=x+8 then substitute it in the other equation like so

x+(x+8)=52 which means 2x+8=52 which means 2x=44 and therefore x=22

the problem however asks for sunday and not saturday, so solve for y now

y=x+8 which means y=22+8 which means y=30

He sold 30 papers on Sunday
4 0
3 years ago
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