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Naily [24]
3 years ago
10

8.5- __= 7.15 in words: 85 minus blank equals 7.15

Mathematics
2 answers:
worty [1.4K]3 years ago
7 0

Answer:2.15

Step-by-step explanation:

5-x=7.15

5-7.15=x

x=2.15

The blank space is 2.15

Phoenix [80]3 years ago
3 0

Answer:

Concept: Numerical Understanding

  1. First off its eight point five minus blank equals seven point fifteen
  2. The missing variable is a number that sums to 7.15
  3. Instinctively you could rearrange or see the value missing is 1.35
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The bases of the trapezoid are 6 and 10. The heights is 4
dlinn [17]

Answer:

A=32

Step-by-step explanation:

Area of a trapezium=1/2(a+b)h

A=1/2(6+10)4

A=1/2(16)4

divide 16 by 2

A=(8)4

open the bracket

A=32

Check/ verify

A=1/2(a+b)h

32=1/2(6+10)4

32=1/2(16)4

divide 16 by 2

32=(8)4

32=32.

I hope this hopes?

8 0
3 years ago
Logb(x-1) + logb(x+2) = logb(8-2x)
Aleksandr [31]

Answer:

x=2

Step-by-step explanation:

log_x(y)+log_x(z)=log_x(yz), so logb(x-1) + logb(x+2)=logb((x-1)(x+2)). next subtract logb(8-2x) from both sides to get logb((x-1)(x+2))-logb(8-2x)=0. log_x(y) - log_x(z) = log_x(y/z). so now we have logb((x-1)(x+2)/(8-2x)). now you can put it into exponential form: (x-1)(x+2)/(8-2x)=b^0=1 now just solve for x:

(x-1)(x+2)= 8-2x, x^2 + x -2 = 8-2x, x^2 + 3x -10 = 0, (x+5)(x-2)=0 x=-5, x=2. plug both into the original equation to check which one is correct, since log_x(y) can't have a negative y, x=-5 doesnt work

7 0
2 years ago
20 POINTS!!
kirill115 [55]

multiply -2/25 x 5 hours

-2/25 x 5/1 = -10/25 = -2/5

4 0
4 years ago
Read 2 more answers
Determine if the points A(1,-3), B(4,4), and C(5,8) are collinear.
myrzilka [38]

Answer:

no

Step-by-step explanation:

since;

(4--3)/(4-1)≠(8-4)/(5-4)

4 0
3 years ago
PLEASE HELP ME!!!!!!!
Travka [436]

Answer:

25

Step-by-step explanation:

b  the shapes are rectangele and triangele

c  triangle base times hieght divided by 2 rectangele leingth times width

d rectangle- 3*5= 15

 triangle 4*5=20  20/2=10

10+15=25

6 0
3 years ago
Read 2 more answers
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