All categories

3 years ago

I need help with this problem 91+(-7)-5

Mathematics

1 answer:

anygoal [31]3 years ago

3 0

91+(-7)-5
Add -7 to 91. It would be the same as subtracting 7 from 91.
84-5
Subtract
Final Answer: 79

You might be interested in

1 Which of the following situations describes the use

Rzqust [24]

1. C
2. B (wanna turn that in on time)
3. C (perfect!)
4. 600,000 (just gotta multiply, and subtract)
5. $22.74
6. C (corresponds kind of with 2 and 3)
7. i don't see the table, i'm sorry..
8. 10
9. C
10. B

hope this helps!

5 0

2 years ago

Read 2 more answers

If an angle of a parallelogram is two-third of

balandron [24]

Answer:

We know that in a parallelogram two opposite angles are equal -

$\\ \implies \sf \: 2x + 2y = 360 {}^{ \circ} \\ \\ \\ \implies \sf \: x + y = 180 {}^{ \circ} \qquad \quad \: (i) \\$

Given - 

angle x is equal to the two - third of it's adjacent angle y.

$\\ \implies \sf \: x = \frac{2}{3} y \\ \\ \\ \implies \sf \frac{x}{2} = \frac{y}{3} = k \\ \\ \\ \qquad \sf \small \underline{ x = 2k \: \: \& \: \: y = 3k} \\$

Now, by using equation (1) :

$\\ \implies \sf \: 2k + 3k = 180 \\ \\ \\ \implies \sf \: 5k = 180 \\ \\ \\ \implies \sf \: k = \frac{180}{5} \\ \\ \\ \large{ \boxed{ \sf{k = {36}^{ \circ} }}} \\$

Now, by putting the value of k in x and y. 

x = 2k = 2 × 36 = 72°
y = 3k = 3 × 36 = 108°

Therefore, the right option and smallest angle is b) 72°.

5 0

3 years ago

Algebra 2 help please

yan [13]

Answer:

17. a) (4x - 8)(6x+ 7); b) 20x - 2

18. a) (2x² + 3x - 5)(2x + 3); b) 4x² + 10x - 4

Step-by-step explanation:

Question 17

a) Area

Area = length × width

A = (4x - 8)(6x+ 7)

b) Perimeter

Perimeter = 2 (length + width)

P = 2(4x - 8 + 6x + 7) = 2(10x - 1) = 20x - 2

Question 18

a) Area

A = (2x² + 3x - 5)(2x + 3)

b) Perimeter

P = 2(2x² + 3x - 5 + 2x + 3) = 2(2x² + 5x - 2) = 4x² + 10x - 4

4 0

3 years ago

How many solutions does the system x-3y = -8 x + 3y =8

MrRissso [65]

X - 3y = -8
x + 3y = 8
--------------- Add the equations
2x = =
x = 0

Plug zero back in to either equation and solve for y.
x - 3y = -8
0 - 3y = -8
-3y = -8
divide both sides by -3
y = 8/3

(0, 8/3)
ONE SOLUTION

3 0

3 years ago

Use this number sen 85 + n = 115 PLS PLS HELP

ValentinkaMS [17]

Answer:

n = 30

Step-by-step explanation:

Rearrange this to make it easier:

115 - 85 = n

30 = n

3 0

2 years ago

Read 2 more answers