The difference of a number and 4 is 9

Mathematics

1 answer:

choli [55]3 years ago

6 0

Answer:

5 maybe

Step-by-step explanation:

when speaking in difference, it's usually talking about subtraction! so when written down your problem would look like : x - 4 = 9 . (x=5)

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Solve each equation.<br>1. 9/2x+18+3x=11/2<br>2. (x+6)-(2x=7)-3x=-9

zzz [600]

$1.\\\frac{9}{2}x+18+3x=\frac{11}{2}\ \ \ \ \ |Multiply\ by\ 2\\\\
9x+36+6x=11\\\\
15x+36=11\ \ \ |Subtract\ 36\\\\
15x=-25\ \ \ |Divide\ by\ 15\\\\
x=-1\frac{2}{5}\\\\
2.\\
(x+6)-(2x-7)-3x=-9\\\\
x+6-2x+7-3x=-9\\\\
-4x+13=-9\ \ \ |Subtract\ 13\\\\
-4x=-22\ \ \ |Divide\ by\ -4\\\\
x=5,5$

3 0

4 years ago

Please solve this for me

tatuchka [14]

Answer:

3-3x/8

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A rectangle with an area of 5/8 ft² is dilated by a factor of 8. What is the area of the dilated rectangle?

gulaghasi [49]

Answer:

40 ft²

Step-by-step explanation:

Let the length of the original rectangle be L and original Breadth be B

it is given that the original area is 5/8 ft²

i.e.

Original Length x Original Breadth = Original Area, or,

LB = 5/8 ft² ------------------(1)

Given that the dilation factor is 8,

Hence,

New Length = 8L and New Breadth = 8B

THerefore,

New Area = 8L x 8B

= 64 LB (from (1) above , we know that LB = 5/8 ft², substitute into expression)

= 64 (5/8)

= 40 ft²

4 0

4 years ago

What values of k will make the line containing points (k,3) and (-2,1) parallel to the line through (5, K) and (1,0)

rjkz [21]

Answer:

k = -4 or 2

Step-by-step explanation:

For the lines to be parallel, the lines would need to be the same slope. This means to find the slope of each we would take the difference of the rise over the run.

$\frac{1-3}{-2-k}=\frac{-2}{-2-k}$