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Sphinxa [80]
3 years ago
11

Evaluate -15a (-3) for a= 2 and b=-3 A.) 5/24 B.) -5/24 C.) -1080 D.) -40/3

Mathematics
1 answer:
zloy xaker [14]3 years ago
4 0
Hhjhhhu did I need ooo 40
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A 10-metre long pipe is cut into 2 pieces. One piece is 5 times the length of the other piece. Find the length of each piece, en
elena55 [62]

9514 1404 393

Answer:

  1.67 m, 8.33 m

Step-by-step explanation:

If the ratio of lengths is 1 : 5, then the ratio of the shortest length to the total is ...

  1 : (1+5) = 1 : 6

The shortest length is (10 m)×(1/6) = 1.67 m. The longer length is 10 -1.67 = 8.33 m.

The lengths of the pieces are 8.33 m and 1.67 m.

6 0
2 years ago
If the coordinates of a point p(m-3 , -6) = p(-7 , -6), then find the value of m .
Serggg [28]

Answer:

m =-4

Step-by-step explanation:

Given

p(m-3 , -6) = p(-7 , -6)

Required

Find m

p(m-3 , -6) = p(-7 , -6)

By comparison:

m-3  = -7

Add 3 to both sides

m = -7+3

m =-4

8 0
2 years ago
20 POINTS Find the diameter?? Pls help I dont know what to do..
Akimi4 [234]

Answer:

Diameter = 19.33

Step-by-step explanation:

Imaging a radius line from O to the endpoints of the 7. call this line R.

Label the part of the vertical line from O to the 90 degree intersection y.

Now you have a right triangle.

Using the Pythagorean theorem:

R² = 7² + y²

also

y = R - 3

substitute for y:

R² = 49 + (R-3)²

R² = 49 + R² - 6R + 9

simplify:

0 = 58 - 6R

6R = 58

R = 9.6667

Diameter = 2(9.6667) = 19.33

7 0
2 years ago
SERIOUS MATH HELP PLEAZE<br> SHOW WORK OR AN EXPLANATION<br> HELPPPPPPPPPPPP
Natali5045456 [20]

Answer:

x=3

Step-by-step explanation:

x^2 = 6x - 9

Subtract 6x from each side

x^2 -6x = -9

Add 9 to each side

x^2 -6x+9 = 0

Factor  

what 2 numbers multiply to 9 and add to -6

-3*-3 = 9

-3+-3 =-6

(x-3)(x-3) = 0

Using the zero product property

x-3 =0    x-3=0

x=3 with multiplicity 2

4 0
3 years ago
Given that y = } 1/2(x1 + x2)c, what is y when X 1 = 3, X2 = 5, and c = 6?
vampirchik [111]

Answer:

24

Step-by-step explanation:

1/2(x1+x2)c x1=3 , x2=5 , c=6

:- 1/2(3+5)6 ( BODMAS)

:- 1/2(8)6 divide 8 by 1/2

:- (4)6 multiply both of them and the result = 24

7 0
3 years ago
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