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Vlada [557]
3 years ago
12

Helpppp with this :>

Mathematics
2 answers:
Paul [167]3 years ago
7 0

Answer:

x=9

Step-by-step explanation:

Iteru [2.4K]3 years ago
6 0

Answer:

x=9

Step-by-step explanation:

Area of a rectangle = length * width

84 = (x-2) * ( x+3); distribute

84 = x²+3x-2x-6; combine like terms and subtract 84 from both sides

0 = x² +x -90

if x= 9 will have 9² +9 -90= 81 +9 -90 = 90-90 = 0 so x=9 works

if x= 10 will have 10² +10 -90 = 100-80= 20 ≠0 so x= 10 does NOT work

if x= -10  and x= -9 will not make sense because we can NOT have a negative measurement

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Plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
makkiz [27]

Answer:

9a + 6b and 5c - 3d

Step-by-step explanation:

(a)

4a + 7b + 5a - b ← collect like terms

= (4a + 5a) + (7b - b)

= 9a + 6b

(b)

6c + 4d - c - 7d ← collect like terms

= (6c - c) + (4d - 7d)

= 5c - 3d

3 0
3 years ago
Read 2 more answers
What is the equation of the line that passes through the point (-5,-2) and has a slope of -6/5
tatyana61 [14]

Answer:

The answer is

<h2>y =  -  \frac{6}{5} x - 8  \\</h2>

Step-by-step explanation:

To find an equation of a line in point slope form when given the slope and a point we use the formula

y -  y_1 = m(x -  x_1) \\

where

m is the slope

( x1 , y1) is the point

From the question the point is (-5,-2) and the slope is - 6/5

The equation of the line is

y + 2 =  -  \frac{6}{5} (x + 5) \\ y + 2  =  -  \frac{6}{5} x - 6 \\ y =  -  \frac{6}{5} x - 6 - 2

We have the final answer as

y =  -  \frac{6}{5} x - 8  \\

Hope this helps you

5 0
3 years ago
I need help with this question? 2(t+1) =10
ANEK [815]

Answer:

Distribute

Subtract   two from both sides of the equation

Simplify

and that's your solution

which should be t=4

Step-by-step explanation:

3 0
3 years ago
10.2 = 20 is rewritten as 2.10 = 20. Was this
Phantasy [73]

Answer: comutative law

Step-by-step explanation:

Factor order does not change product.

4 0
3 years ago
Help guys plzzz asapppp
nignag [31]

sin(x) = opp/hyp
cos(x) = adj/hyp
tan(x) = opp/adj

sin(x) = 3.9/8.1
sin(x) = 0.481

Inverse sin of 0.481 = 28.8 degrees

Each answer should be between 0 and 90 :)
4 0
2 years ago
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