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MAVERICK [17]
3 years ago
13

Find x and find the measure of the missing angle

Mathematics
1 answer:
professor190 [17]3 years ago
4 0
So 8x+5+3x+8=90
11x=77
X=7
Plug in 7 for the expressions
8(7)+5= 61
3(7)+8= 29
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Help it’s not 1,134 will give brainly
Masja [62]

Answer:

D

Step-by-step explanation:

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3 years ago
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Emily saved $11 to go to the candy stor. After buying 10 jawbreakers, she had 5.80. How much did each jawbreaker cost including
Grace [21]

Answer:

Step-by-step explanation:

8 0
3 years ago
F(x)=2x^2-x-10 part a: what are the X intercepts of the graph of f(x)? Show your work
Genrish500 [490]
A. x intercepts are where the graph hits the x axis or where f(x)=0
0=2x^2-x-10
solve
hmm
we can use the ac method
multiply 2 and -10 to get -20
what 2 numbers muliply to get -20 and add to get -1 (the coefint of the x term)
-5 and 4
split the midd into that
0=2x^2+4x-5x-10
group
0=(2x^2+4x)+(-5x-10)
factor
0=2x(x+2)-5(x+2)
undistribute
0=(x+2)(2x-5)
set each to 0
0=x+2
0=-2

0=2x-5
5=2x
5/2=x

x intercepts are at x=-2 and 5/2 or the points (-2,0) and (5/2,0)


B. ok, so for f(x)=ax^2+bx+c
if a>0, then the parabola opens up and the vertex is a minimum
if a<0 then the parabola opens down and the vertex is a max

f(x)=2x^2-x-10
2>0
opoens up
vertex is minimum

ok, the vertex

the x value of  the vertex in f(x)=ax^2+bx+c= is -b/(2a)
the y value of the vertex is f(-b/(2a)) so
given
f(x)=2x^2-x-10
a=2
b=-1
-b/2a=-(-1)/(2*2)=1/4
f(1/4)=2(1/4)^2-(1/4)-10
f(1/4)=2(1/16)-1/4-10
f(1/4)=1/8-1/4-10
f(1/4)=1/8-2/8-80/8
f(1/4)=-81/8
so the vertex is (1/4,-81/8) or (0.25,-10.125)


C. graph the x intercepts and the vertex
the vertex is min and the graph goes through the x intercepts
4 0
3 years ago
The function f(x)= 1 divided by x is an example of an exponential function.<br> true<br> false
tensa zangetsu [6.8K]

This is a false statement.

Exponential functions are when there is a variable in the exponent. With x being in the denominator, this is the same as the function x^-1. Since the exponent is a number and not a variable, it is not a exponential function.

5 0
3 years ago
What is the least common multiple you should use to find 4/5 + 5/6
amm1812

Answer:

30 is the lest common multiple

Step-by-step explanation:


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3 years ago
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