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Elina [12.6K]
2 years ago
8

Evaluate the expression 4 + 9(3 + 11) - 15*2 using order of operations.the 2 is an exponet

Mathematics
1 answer:
sleet_krkn [62]2 years ago
6 0

Answer:

-95

Step-by-step explanation:

4+9(3+11)-15^2

4+9(14)-15^2

4+9(14)-225

4+126-225

130-225

-95

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dusya [7]

Answer:

Radius = 5

center is (19,-1)

(x-19)^2(y+1)^2= 25

Step-by-step explanation:

Two points in the plane, (19,4) and  (19,−6), represent the endpoints of the diameter of a circle.

Distance between the points is calculated using formula

d=\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}

=\sqrt{\left(19-19\right)^2+\left(-6-4\right)^2}=10

diameter = 10

radius = diameter divide by 2

Radius = 5

midpoint is the center of the circle

\left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right)

\left(\frac{19+19}{2},\:\frac{-6+4}{2}\right)

(19,-1)

Equation of the circle

(x-h)^2(y-k)^2= r^2

h,k is the center and r is the radius

h=19 and k=-1 , r=5

(x-19)^2(y+1)^2= 25

8 0
3 years ago
If sin(y degrees) = cos(x degrees), which of the following statements is true?
grin007 [14]

Answer:

Angle y and Angle x are complementary angles

Step-by-step explanation:

we know that

If

sin(y°)=cos(x°)

then

Angle y and Angle x are complementary angles

so

∠y+∠x=90°

∠x=90°-∠y

sin(y°)=cos(90°-y°)

therefore

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6 0
3 years ago
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Nonamiya [84]

Answer:

Step-by-step explanation:

2 functions start by making a domain

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Function 2: -1≤x≤1

Now come up with equations

Function 1= x+3

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Now put it all together

f(x)= x+3 for -3≤x<1 and 5 for -1≤x≤1

8 0
2 years ago
4x + 3y =4 2x - y =7 in substitution
IRINA_888 [86]
The answer is (4x+3y=4 2x-7=7: 5/2 and y=-2) hope it helps and have a good day!
4 0
3 years ago
Number 11 and 12. Solve for x and y. Please and thank you.
vlada-n [284]

Answer:

11. x=18, y=5

12. x=17, y=9

Step-by-step explanation:

Use the angle property https://www.proprofs.com/quiz-school/story.php?title=angle-properties-parallel-lines (REFER TO THIS LINK)

4 0
2 years ago
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