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allochka39001 [22]
2 years ago
9

Solve m+18+23=71 PLZZZZZ I NEED THE ANSER PLZZZ

Mathematics
2 answers:
Aleksandr-060686 [28]2 years ago
8 0

Answer:

m + 18 + 23 = 71

m + 41 = 71

m = 71 - 41

<u>m = 30</u>

Ber [7]2 years ago
8 0

Answer:

30

Step-by-step explanation:

m+18+23=71

m+41=71

m=71-41

m=30

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The jogger can run at an average speed of 5.5 miles per hour up the slope and 6.5 miles per hour going down the slope. The jogge
Bond [772]
<span>DOC]<span>Venn Diagram Task – Differentiation - Summer Summit

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7 0
3 years ago
Find a third-degree polynomial equation with rational coefficients that has the roots 2 and -3 + i.
NeTakaya

Answer:

Option B

Step-by-step explanation:

Complex roots occur as conjugate pairs so the third root is -3 - i ( note that the sign changes from + to -).

So in factor form we have:-

(x - 2)(x - (-3 + i))(x - (-3 - i)) = 0    Let's expand the last 2 factors first:-

(x - (-3 + i))(x - (-3 - i))

= (x + 3 - i)(x + 3 + i)

= x^2 + 3x +ix + 3x + 9 + 3i - ix - 3i - i^2

= x^2 + 6x + 9 - (-1)

= x^2 + 6x + 10

Now multiplying by (x - 2):-

(x - 2)(x^2 + 6x + 10) = 0

x^3 + 6x^2 + 10x - 2x^2 - 12x - 20 = 0

x^3 + 4x^2 - 2x - 20 = 0    (answer)

Option B

5 0
3 years ago
What is the volume of the square pyramid with base edges 10 in. and height 9 in.?
klemol [59]
The answer is 300.

Hope this helps!
5 0
3 years ago
F(x)=-9x^2-2x and g(x)=3x^2+6x-9, find (f-g)(x) and (f-g)(-4)
Sergio039 [100]

Answer:

(f-g)(x) = -12x^{2} - 8x + 9

(f-g)(-4) = -151

Step-by-step explanation:

To find f-g(x) we subtract the common terms. So

f(x) = -9x^{2} - 2x

g(x) = 3x^{2} + 6x - 9

(f-g)(x)

(f-g)(x) = f(x) - g(x) = -9x^{2} - 2x - (3x^{2} + 6x - 9) = -9x^{2} - 2x - 3x^{2} - 6x + 9 = (-9 - 3)x^{2} + (-2 - 6)x + 9 = -12x^{2} - 8x + 9

(f-g)(-4)

(f-g)(x) = -12x^{2} - 8x + 9

We replace x by -4

(f-g)(-4) = -12(-4)^{2} - 8(4) + 9= -151

(f-g)(-4) = -151

5 0
3 years ago
What is the best approximation for the perimeter of a semicircle with a diameter of 12 cm?
maw [93]
When we speak of the word "perimeter" of a circle, we mean to say the circumference. Since we are only given a semicircle, the perimeter would be,
                                      perimeter = (pi)(radius) + diameter
Substituting the known values,
                                      perimeter = (3.14)(6 cm) + 12 cm
The value of the perimeter is,
                                      perimeter = 30.84 cm
6 0
2 years ago
Read 2 more answers
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