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Vanyuwa [196]
4 years ago
12

4(5x4)-2 P.S. Does anyone have a teacher named Mrs.Backus?

Mathematics
1 answer:
MrRissso [65]4 years ago
8 0
5*4=20
4(20)-2
80-2
80-2=78
78 is the answer
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35 boys 21 girls. mei ling surveys 16 girls. barry surveys 28 and 12 and halmi surveys 14 and 14. who would have the most approp
seraphim [82]

Halmi had the most appropriate information because when you add both the girls and the boys up it is 56 after that you have to add 14+14=28.

28/56= exactly %50 of the entire group.

6 0
3 years ago
What is the value of s in the equation 3 r equals 10 plus 5 s, when r equals 10?
Artemon [7]

Answer:

s = 4

Step-by-step explanation:

3r = 10 + 5s

3×10 = 10 + 5s

5s = 30 - 10

5s = 20

s = 20 : 5

s = 4

7 0
3 years ago
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How do scientists communicate the results of investigations? A. by publishing articles in scientific journals B. by giving talks
astraxan [27]
A) by publishing articles in scientific journals-
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6 0
4 years ago
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If the sin of angle x is 4 over 5 and the triangle was dilated to be two times as big as the original, what would be the value o
beks73 [17]

Answer:

Sin of x does not change

Step-by-step explanation:

Whenever a triangle is dilated, the angle remains the same as well as the ratio for sides of triangle. For smshapes with dimensions, when shapes are dilated the dimensions has increment with common factor.

From trigonometry,

Sin(x)=opposite/hypotenose

Where x=4/5

Sin(4/5)= opposite/hypotenose

But we were given the scale factor of 2 which means the dilation is to two times big.

Then we have

Sin(x)=(2×opposite)/(2×hypotenose)

Then,if we divide by 2 the numerator and denominator we still have

Sin(x)=opposite/hypotenose

Which means the two in numerator and denominator is cancelled out.

Then we still have the same sin of x. as sin(4/5)

Hence,Sin of x does not change

4 0
3 years ago
Write an equation for a circle with center at (5,-2) and diameter of 8 centimeters.
mars1129 [50]

Answer:

(x-5)^2+(y+2)^2=16

Step-by-step explanation:

lol brainlessly...

General Circle function: (x-h)^2+(y-k)^2=r^2, where h is the x-coordinate of the center, k is the y-coordinate of the center, and r is the radius.

The radius of the circle is half the diameter so: 8 / 2 = 4

The x-coordinate of the circle is 5

The y-coordinate of the circle is -2

Plug in.

(x-5)^2+(y-(-2))^2=4^2

(x-5)^2+(y+2)^2=16

5 0
3 years ago
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