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Lesechka [4]
4 years ago
5

Please help !!!! UrGent !!!!

Mathematics
1 answer:
Anni [7]4 years ago
8 0

Answer:

C

Step-by-step explanation:

We see can estimate what angle Y will be with proportions.

length 1/angle 1=length 2/angle 2

19/85=23/Y

Solving for Y, we get 102.894

That gives us choice C.

Another way is to use elimination.

We know it isn't a straight line, so it's not D.

It can't be A or B, because the angle Y is clearly greater than angle P.

That leaves us with choice C.

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Use the functions and the scenario to solve the problem.
Naily [24]

Answer:

Leanne is correct. It is important that g(x) is subtracted from f(x).

Shiloh is incorrect. She subtracted f(x) from g(x), and subtraction isn't commutative.

*Just took the test, got the answer correct!! Hope this helps!

7 0
2 years ago
5. The mapping f: xax² + bx + c defined on the set of real numbers is such that f(0) = -4,f(1)-1 and/(-1)= -5. Find a, b and c.
Marrrta [24]

It looks like you're saying

f(x) = ax^2 + bx + c

and you're asked to find a,b,c given f(0)=-4, f(1)=-1, and f(-1)=-5.

Evaluate f at the three given points:

x=0 \implies f(0) = \boxed{c = -4}

x=1 \implies f(1) = -1 = a + b + c \implies a+b = 3

x=-1 \implies f(-1) = -5 = a - b + c \implies a - b = -1

(a+b) + (a-b) = 3 + (-1) \implies 2a = 2 \implies \boxed{a=2}

a-b = -1 \implies \boxed{b=3}

and the mapping is f(x) = 2x^2 + 3x - 4.

5 0
2 years ago
Given 4x - y = 32, find:<br> a.) x-intercept<br> b.) y-intercept<br> c.) slope
Rashid [163]
You always want to get y by itself and in the form y = mx + b. So first, subtract 4x from both sides to get -y = -4x +32
You also want to get rid of that negative sign. That’s easy, divide everything by negative 1 to get:
y = 4x - 32

We can see the slope is just 4 and the y intercept is -32. The y-intercept is when x equals zero, you’ll get -32 if you do so. The x-intercept is now when y equals zero. Now solve for x. You get 4x = 32, divide by 4 to get 8

a.) 8
b.) -32
c.) 4
8 0
3 years ago
A school has 375 boys and 405 girls.What percentage (correct to one decimal place) are boys?
Marysya12 [62]
Total students = 375 + 405 = 780

boys % = (375 / 780) *100%
           =48.1 %
6 0
3 years ago
What's number 4???? Please help!!!
lbvjy [14]
V = l x w x h. Area of the base if also lengh x width, so V = ( area of the base) x h 18 = 4.5 x h.So height :  h = 18 / 4.5
4 0
3 years ago
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